./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix051_pso.opt_rmo.opt_tso.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/mutex-meet-nonrel/mix051_pso.opt_rmo.opt_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix051_pso.opt_rmo.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix051_pso.opt_rmo.opt_tso.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-7724a2d-m [2024-06-28 03:33:45,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:33:45,379 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:33:45,385 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:33:45,386 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:33:45,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:33:45,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:33:45,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:33:45,418 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:33:45,422 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:33:45,422 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:33:45,422 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:33:45,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:33:45,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:33:45,424 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:33:45,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:33:45,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:33:45,425 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:33:45,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:33:45,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:33:45,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:33:45,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:33:45,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:33:45,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:33:45,427 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:33:45,427 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:33:45,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:33:45,428 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:33:45,428 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:33:45,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:33:45,429 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:33:45,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:33:45,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:33:45,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:33:45,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:33:45,430 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:33:45,431 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:33:45,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:33:45,431 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:33:45,431 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:33:45,432 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:33:45,436 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:33:45,436 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:33:45,436 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:33:45,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:33:45,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:33:45,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:33:45,724 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:33:45,726 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:33:45,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix051_pso.opt_rmo.opt_tso.opt.yml/witness.yml [2024-06-28 03:33:45,960 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:33:45,960 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:33:45,961 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix051_pso.opt_rmo.opt_tso.opt.i [2024-06-28 03:33:47,037 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:33:47,291 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:33:47,292 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix051_pso.opt_rmo.opt_tso.opt.i [2024-06-28 03:33:47,313 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78b5d203/7326b0bc715545489a93c23dd0dfaf0d/FLAG538ca97ae [2024-06-28 03:33:47,325 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78b5d203/7326b0bc715545489a93c23dd0dfaf0d [2024-06-28 03:33:47,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:33:47,327 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:33:47,346 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:33:47,347 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:33:47,352 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:33:47,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:33:45" (1/2) ... [2024-06-28 03:33:47,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@173419d6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:47, skipping insertion in model container [2024-06-28 03:33:47,354 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:33:45" (1/2) ... [2024-06-28 03:33:47,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1baff66 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:47, skipping insertion in model container [2024-06-28 03:33:47,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:33:47" (2/2) ... [2024-06-28 03:33:47,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@173419d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:47, skipping insertion in model container [2024-06-28 03:33:47,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:33:47" (2/2) ... [2024-06-28 03:33:47,356 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:33:47,470 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:33:47,471 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] (((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-28 03:33:47,472 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-28 03:33:47,472 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] (((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-28 03:33:47,472 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] (((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-28 03:33:47,473 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:33:47,473 INFO L106 edCorrectnessWitness]: ghost_update [L847-L847] multithreaded = 1; [2024-06-28 03:33:47,518 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:33:47,942 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:33:47,953 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:33:48,099 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:33:48,147 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:33:48,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:48 WrapperNode [2024-06-28 03:33:48,148 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:33:48,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:33:48,149 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:33:48,150 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:33:48,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:48" (1/1) ... [2024-06-28 03:33:48,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:48" (1/1) ... [2024-06-28 03:33:48,218 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-28 03:33:48,219 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:33:48,220 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:33:48,220 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:33:48,220 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:33:48,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:48" (1/1) ... [2024-06-28 03:33:48,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:48" (1/1) ... [2024-06-28 03:33:48,237 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:48" (1/1) ... [2024-06-28 03:33:48,257 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]. [2024-06-28 03:33:48,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:48" (1/1) ... [2024-06-28 03:33:48,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:48" (1/1) ... [2024-06-28 03:33:48,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:48" (1/1) ... [2024-06-28 03:33:48,272 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:48" (1/1) ... [2024-06-28 03:33:48,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:48" (1/1) ... [2024-06-28 03:33:48,276 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:48" (1/1) ... [2024-06-28 03:33:48,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:33:48,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:33:48,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:33:48,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:33:48,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:48" (1/1) ... [2024-06-28 03:33:48,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:33:48,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:33:48,321 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) [2024-06-28 03:33:48,352 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 [2024-06-28 03:33:48,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:33:48,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:33:48,369 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:33:48,370 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:33:48,370 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:33:48,371 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:33:48,371 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:33:48,371 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:33:48,371 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 03:33:48,371 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 03:33:48,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:33:48,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:33:48,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:33:48,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:33:48,375 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:33:48,530 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:33:48,532 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:33:48,932 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:33:48,933 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:33:49,109 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:33:49,109 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:33:49,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:33:49 BoogieIcfgContainer [2024-06-28 03:33:49,110 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:33:49,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:33:49,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:33:49,115 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:33:49,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:33:45" (1/4) ... [2024-06-28 03:33:49,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b559a66 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:33:49, skipping insertion in model container [2024-06-28 03:33:49,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:33:47" (2/4) ... [2024-06-28 03:33:49,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b559a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:33:49, skipping insertion in model container [2024-06-28 03:33:49,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:48" (3/4) ... [2024-06-28 03:33:49,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b559a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:33:49, skipping insertion in model container [2024-06-28 03:33:49,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:33:49" (4/4) ... [2024-06-28 03:33:49,118 INFO L112 eAbstractionObserver]: Analyzing ICFG mix051_pso.opt_rmo.opt_tso.opt.i [2024-06-28 03:33:49,132 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:33:49,132 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 03:33:49,132 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:33:49,183 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:33:49,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2024-06-28 03:33:49,252 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2024-06-28 03:33:49,253 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:33:49,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:33:49,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2024-06-28 03:33:49,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 94 flow [2024-06-28 03:33:49,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:33:49,284 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;@1fc3cc38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:33:49,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 03:33:49,289 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:33:49,290 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 03:33:49,290 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:33:49,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:49,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:33:49,291 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)] === [2024-06-28 03:33:49,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:49,297 INFO L85 PathProgramCache]: Analyzing trace with hash 373213845, now seen corresponding path program 1 times [2024-06-28 03:33:49,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:49,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091407658] [2024-06-28 03:33:49,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:49,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:50,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:50,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:50,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091407658] [2024-06-28 03:33:50,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091407658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:50,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:50,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:33:50,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547047023] [2024-06-28 03:33:50,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:50,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:33:50,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:50,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:33:50,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:33:50,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 03:33:50,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-06-28 03:33:50,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:50,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 03:33:50,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:51,872 INFO L124 PetriNetUnfolderBase]: 5296/7608 cut-off events. [2024-06-28 03:33:51,872 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-06-28 03:33:51,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15159 conditions, 7608 events. 5296/7608 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 42812 event pairs, 3946 based on Foata normal form. 1/7420 useless extension candidates. Maximal degree in co-relation 15146. Up to 7282 conditions per place. [2024-06-28 03:33:51,931 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 40 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-28 03:33:51,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 221 flow [2024-06-28 03:33:51,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:33:51,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:33:51,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-28 03:33:51,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6535947712418301 [2024-06-28 03:33:51,944 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 94 flow. Second operand 3 states and 100 transitions. [2024-06-28 03:33:51,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 221 flow [2024-06-28 03:33:51,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 214 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:33:51,950 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 129 flow [2024-06-28 03:33:51,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-28 03:33:51,954 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-28 03:33:51,955 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 129 flow [2024-06-28 03:33:51,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-06-28 03:33:51,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:51,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:51,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:33:51,956 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)] === [2024-06-28 03:33:51,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:51,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2118699822, now seen corresponding path program 1 times [2024-06-28 03:33:51,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:51,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528742461] [2024-06-28 03:33:51,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:51,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:52,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:52,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:52,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528742461] [2024-06-28 03:33:52,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528742461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:52,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:52,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:33:52,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232453476] [2024-06-28 03:33:52,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:52,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:33:52,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:52,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:33:52,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:33:52,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 51 [2024-06-28 03:33:52,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:52,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:52,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 51 [2024-06-28 03:33:52,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:53,919 INFO L124 PetriNetUnfolderBase]: 6191/8655 cut-off events. [2024-06-28 03:33:53,919 INFO L125 PetriNetUnfolderBase]: For 1762/1762 co-relation queries the response was YES. [2024-06-28 03:33:53,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19893 conditions, 8655 events. 6191/8655 cut-off events. For 1762/1762 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 47391 event pairs, 4100 based on Foata normal form. 4/8601 useless extension candidates. Maximal degree in co-relation 19881. Up to 8452 conditions per place. [2024-06-28 03:33:53,974 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 51 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-28 03:33:53,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 315 flow [2024-06-28 03:33:53,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:33:53,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:33:53,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-06-28 03:33:53,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2024-06-28 03:33:53,977 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 129 flow. Second operand 4 states and 128 transitions. [2024-06-28 03:33:53,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 315 flow [2024-06-28 03:33:53,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:33:53,980 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 177 flow [2024-06-28 03:33:53,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-28 03:33:53,981 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-28 03:33:53,981 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 177 flow [2024-06-28 03:33:53,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:53,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:53,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:53,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:33:53,982 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)] === [2024-06-28 03:33:53,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:53,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1255184382, now seen corresponding path program 1 times [2024-06-28 03:33:53,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:53,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402672286] [2024-06-28 03:33:53,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:53,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:54,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:54,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402672286] [2024-06-28 03:33:54,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402672286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:54,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:54,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:33:54,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521598531] [2024-06-28 03:33:54,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:54,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:33:54,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:54,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:33:54,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:33:54,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 51 [2024-06-28 03:33:54,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-06-28 03:33:54,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:54,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 51 [2024-06-28 03:33:54,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:56,017 INFO L124 PetriNetUnfolderBase]: 6209/8722 cut-off events. [2024-06-28 03:33:56,017 INFO L125 PetriNetUnfolderBase]: For 5064/5064 co-relation queries the response was YES. [2024-06-28 03:33:56,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22473 conditions, 8722 events. 6209/8722 cut-off events. For 5064/5064 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 48031 event pairs, 3061 based on Foata normal form. 7/8704 useless extension candidates. Maximal degree in co-relation 22459. Up to 8373 conditions per place. [2024-06-28 03:33:56,089 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 69 selfloop transitions, 21 changer transitions 0/99 dead transitions. [2024-06-28 03:33:56,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 99 transitions, 531 flow [2024-06-28 03:33:56,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:33:56,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:33:56,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-06-28 03:33:56,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6588235294117647 [2024-06-28 03:33:56,097 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 177 flow. Second operand 5 states and 168 transitions. [2024-06-28 03:33:56,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 99 transitions, 531 flow [2024-06-28 03:33:56,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 99 transitions, 512 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 03:33:56,104 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 308 flow [2024-06-28 03:33:56,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-06-28 03:33:56,105 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-28 03:33:56,106 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 308 flow [2024-06-28 03:33:56,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-06-28 03:33:56,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:56,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:56,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:33:56,107 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)] === [2024-06-28 03:33:56,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:56,108 INFO L85 PathProgramCache]: Analyzing trace with hash -205233313, now seen corresponding path program 1 times [2024-06-28 03:33:56,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:56,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061515910] [2024-06-28 03:33:56,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:56,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:57,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:57,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061515910] [2024-06-28 03:33:57,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061515910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:57,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:57,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:33:57,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791253626] [2024-06-28 03:33:57,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:57,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:33:57,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:57,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:33:57,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:33:57,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 51 [2024-06-28 03:33:57,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 03:33:57,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:57,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 51 [2024-06-28 03:33:57,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:58,411 INFO L124 PetriNetUnfolderBase]: 6351/8942 cut-off events. [2024-06-28 03:33:58,411 INFO L125 PetriNetUnfolderBase]: For 12467/12486 co-relation queries the response was YES. [2024-06-28 03:33:58,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27267 conditions, 8942 events. 6351/8942 cut-off events. For 12467/12486 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 49795 event pairs, 2386 based on Foata normal form. 48/8963 useless extension candidates. Maximal degree in co-relation 27250. Up to 8365 conditions per place. [2024-06-28 03:33:58,474 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 79 selfloop transitions, 24 changer transitions 0/112 dead transitions. [2024-06-28 03:33:58,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 112 transitions, 686 flow [2024-06-28 03:33:58,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:33:58,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:33:58,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-06-28 03:33:58,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6437908496732027 [2024-06-28 03:33:58,477 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 308 flow. Second operand 6 states and 197 transitions. [2024-06-28 03:33:58,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 112 transitions, 686 flow [2024-06-28 03:33:58,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 112 transitions, 674 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 03:33:58,488 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 377 flow [2024-06-28 03:33:58,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=377, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2024-06-28 03:33:58,490 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2024-06-28 03:33:58,491 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 377 flow [2024-06-28 03:33:58,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 03:33:58,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:58,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:58,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:33:58,492 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)] === [2024-06-28 03:33:58,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:58,492 INFO L85 PathProgramCache]: Analyzing trace with hash -351027276, now seen corresponding path program 1 times [2024-06-28 03:33:58,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:58,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907882225] [2024-06-28 03:33:58,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:58,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:59,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:59,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907882225] [2024-06-28 03:33:59,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907882225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:59,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:59,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:33:59,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134835697] [2024-06-28 03:33:59,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:59,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:33:59,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:59,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:33:59,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:33:59,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-06-28 03:33:59,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 377 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-06-28 03:33:59,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:59,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-06-28 03:33:59,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:00,663 INFO L124 PetriNetUnfolderBase]: 5437/7897 cut-off events. [2024-06-28 03:34:00,663 INFO L125 PetriNetUnfolderBase]: For 15553/15581 co-relation queries the response was YES. [2024-06-28 03:34:00,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25886 conditions, 7897 events. 5437/7897 cut-off events. For 15553/15581 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 45435 event pairs, 2456 based on Foata normal form. 3/7879 useless extension candidates. Maximal degree in co-relation 25865. Up to 7488 conditions per place. [2024-06-28 03:34:00,727 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 63 selfloop transitions, 10 changer transitions 0/82 dead transitions. [2024-06-28 03:34:00,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 567 flow [2024-06-28 03:34:00,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:34:00,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:34:00,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-06-28 03:34:00,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254901960784314 [2024-06-28 03:34:00,731 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 377 flow. Second operand 5 states and 134 transitions. [2024-06-28 03:34:00,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 567 flow [2024-06-28 03:34:00,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 82 transitions, 506 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:34:00,742 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 347 flow [2024-06-28 03:34:00,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=347, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2024-06-28 03:34:00,743 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-06-28 03:34:00,743 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 347 flow [2024-06-28 03:34:00,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-06-28 03:34:00,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:00,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:00,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:34:00,744 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)] === [2024-06-28 03:34:00,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:00,744 INFO L85 PathProgramCache]: Analyzing trace with hash -78198259, now seen corresponding path program 1 times [2024-06-28 03:34:00,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:00,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434370613] [2024-06-28 03:34:00,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:00,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:01,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:01,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434370613] [2024-06-28 03:34:01,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434370613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:01,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:01,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:34:01,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230281918] [2024-06-28 03:34:01,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:01,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:34:01,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:01,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:34:01,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:34:01,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:34:01,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 347 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:01,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:01,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:34:01,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:03,113 INFO L124 PetriNetUnfolderBase]: 6355/8944 cut-off events. [2024-06-28 03:34:03,114 INFO L125 PetriNetUnfolderBase]: For 21038/21058 co-relation queries the response was YES. [2024-06-28 03:34:03,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29779 conditions, 8944 events. 6355/8944 cut-off events. For 21038/21058 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 49667 event pairs, 2932 based on Foata normal form. 24/8947 useless extension candidates. Maximal degree in co-relation 29756. Up to 8595 conditions per place. [2024-06-28 03:34:03,180 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 66 selfloop transitions, 25 changer transitions 0/99 dead transitions. [2024-06-28 03:34:03,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 99 transitions, 666 flow [2024-06-28 03:34:03,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:34:03,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:34:03,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-28 03:34:03,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5392156862745098 [2024-06-28 03:34:03,182 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 347 flow. Second operand 6 states and 165 transitions. [2024-06-28 03:34:03,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 99 transitions, 666 flow [2024-06-28 03:34:03,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 99 transitions, 637 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:34:03,194 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 414 flow [2024-06-28 03:34:03,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=414, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2024-06-28 03:34:03,195 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2024-06-28 03:34:03,195 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 414 flow [2024-06-28 03:34:03,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:03,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:03,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:03,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:34:03,196 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)] === [2024-06-28 03:34:03,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:03,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1965254995, now seen corresponding path program 2 times [2024-06-28 03:34:03,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:03,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503209446] [2024-06-28 03:34:03,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:03,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:04,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:04,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:04,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503209446] [2024-06-28 03:34:04,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503209446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:04,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:04,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:34:04,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77817184] [2024-06-28 03:34:04,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:04,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:34:04,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:04,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:34:04,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:34:04,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:34:04,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 414 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:04,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:04,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:34:04,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:05,478 INFO L124 PetriNetUnfolderBase]: 6310/8871 cut-off events. [2024-06-28 03:34:05,478 INFO L125 PetriNetUnfolderBase]: For 25004/25026 co-relation queries the response was YES. [2024-06-28 03:34:05,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30365 conditions, 8871 events. 6310/8871 cut-off events. For 25004/25026 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 48985 event pairs, 2946 based on Foata normal form. 23/8867 useless extension candidates. Maximal degree in co-relation 30342. Up to 8526 conditions per place. [2024-06-28 03:34:05,540 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 59 selfloop transitions, 26 changer transitions 0/93 dead transitions. [2024-06-28 03:34:05,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 93 transitions, 646 flow [2024-06-28 03:34:05,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:34:05,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:34:05,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-28 03:34:05,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228758169934641 [2024-06-28 03:34:05,542 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 414 flow. Second operand 6 states and 160 transitions. [2024-06-28 03:34:05,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 93 transitions, 646 flow [2024-06-28 03:34:05,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 603 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:34:05,560 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 434 flow [2024-06-28 03:34:05,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=434, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2024-06-28 03:34:05,562 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2024-06-28 03:34:05,562 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 434 flow [2024-06-28 03:34:05,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:05,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:05,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:05,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:34:05,563 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)] === [2024-06-28 03:34:05,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:05,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1558989351, now seen corresponding path program 1 times [2024-06-28 03:34:05,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:05,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790676879] [2024-06-28 03:34:05,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:05,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:06,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:06,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:06,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790676879] [2024-06-28 03:34:06,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790676879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:06,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:06,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:06,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486763787] [2024-06-28 03:34:06,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:06,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:06,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:06,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:06,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:06,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:34:06,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 434 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) [2024-06-28 03:34:06,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:06,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:34:06,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:07,895 INFO L124 PetriNetUnfolderBase]: 6889/9838 cut-off events. [2024-06-28 03:34:07,895 INFO L125 PetriNetUnfolderBase]: For 30543/30543 co-relation queries the response was YES. [2024-06-28 03:34:07,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33613 conditions, 9838 events. 6889/9838 cut-off events. For 30543/30543 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 54859 event pairs, 3133 based on Foata normal form. 6/9828 useless extension candidates. Maximal degree in co-relation 33589. Up to 9382 conditions per place. [2024-06-28 03:34:07,961 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 83 selfloop transitions, 17 changer transitions 0/108 dead transitions. [2024-06-28 03:34:07,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 108 transitions, 771 flow [2024-06-28 03:34:07,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:07,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:07,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 03:34:07,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042016806722689 [2024-06-28 03:34:07,964 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 434 flow. Second operand 7 states and 180 transitions. [2024-06-28 03:34:07,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 108 transitions, 771 flow [2024-06-28 03:34:08,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 108 transitions, 680 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:34:08,130 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 455 flow [2024-06-28 03:34:08,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=455, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2024-06-28 03:34:08,131 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2024-06-28 03:34:08,131 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 455 flow [2024-06-28 03:34:08,131 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) [2024-06-28 03:34:08,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:08,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:08,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:34:08,131 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)] === [2024-06-28 03:34:08,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:08,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1464977718, now seen corresponding path program 1 times [2024-06-28 03:34:08,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:08,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536551053] [2024-06-28 03:34:08,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:08,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:08,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:08,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536551053] [2024-06-28 03:34:08,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536551053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:08,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:08,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:34:08,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778177487] [2024-06-28 03:34:08,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:08,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:34:08,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:08,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:34:08,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:34:09,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:34:09,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 455 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) [2024-06-28 03:34:09,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:09,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:34:09,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:09,990 INFO L124 PetriNetUnfolderBase]: 6875/10012 cut-off events. [2024-06-28 03:34:09,990 INFO L125 PetriNetUnfolderBase]: For 37845/37845 co-relation queries the response was YES. [2024-06-28 03:34:10,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35908 conditions, 10012 events. 6875/10012 cut-off events. For 37845/37845 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 57012 event pairs, 3191 based on Foata normal form. 4/10013 useless extension candidates. Maximal degree in co-relation 35882. Up to 9406 conditions per place. [2024-06-28 03:34:10,063 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 77 selfloop transitions, 10 changer transitions 0/95 dead transitions. [2024-06-28 03:34:10,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 95 transitions, 699 flow [2024-06-28 03:34:10,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:34:10,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:34:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-28 03:34:10,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980392156862745 [2024-06-28 03:34:10,065 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 455 flow. Second operand 5 states and 127 transitions. [2024-06-28 03:34:10,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 95 transitions, 699 flow [2024-06-28 03:34:10,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 95 transitions, 651 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:34:10,106 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 476 flow [2024-06-28 03:34:10,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2024-06-28 03:34:10,107 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-28 03:34:10,107 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 476 flow [2024-06-28 03:34:10,108 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) [2024-06-28 03:34:10,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:10,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:10,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:34:10,108 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:10,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:10,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1848568094, now seen corresponding path program 1 times [2024-06-28 03:34:10,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:10,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532035894] [2024-06-28 03:34:10,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:10,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:11,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:11,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:11,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532035894] [2024-06-28 03:34:11,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532035894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:11,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:11,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:11,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887778850] [2024-06-28 03:34:11,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:11,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:11,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:11,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:11,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:11,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:34:11,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 476 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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) [2024-06-28 03:34:11,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:11,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:34:11,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:12,731 INFO L124 PetriNetUnfolderBase]: 8101/11387 cut-off events. [2024-06-28 03:34:12,731 INFO L125 PetriNetUnfolderBase]: For 59985/60077 co-relation queries the response was YES. [2024-06-28 03:34:12,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44489 conditions, 11387 events. 8101/11387 cut-off events. For 59985/60077 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 64063 event pairs, 2691 based on Foata normal form. 54/11411 useless extension candidates. Maximal degree in co-relation 44462. Up to 10308 conditions per place. [2024-06-28 03:34:12,817 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 88 selfloop transitions, 32 changer transitions 0/129 dead transitions. [2024-06-28 03:34:12,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 129 transitions, 940 flow [2024-06-28 03:34:12,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-28 03:34:12,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434173669467787 [2024-06-28 03:34:12,819 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 476 flow. Second operand 7 states and 194 transitions. [2024-06-28 03:34:12,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 129 transitions, 940 flow [2024-06-28 03:34:12,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 129 transitions, 901 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 03:34:12,849 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 566 flow [2024-06-28 03:34:12,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=566, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-06-28 03:34:12,850 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2024-06-28 03:34:12,850 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 566 flow [2024-06-28 03:34:12,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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) [2024-06-28 03:34:12,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:12,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:12,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:34:12,851 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)] === [2024-06-28 03:34:12,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:12,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1848507644, now seen corresponding path program 2 times [2024-06-28 03:34:12,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:12,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018987016] [2024-06-28 03:34:12,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:12,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:13,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:13,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018987016] [2024-06-28 03:34:13,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018987016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:13,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:13,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:13,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131268717] [2024-06-28 03:34:13,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:13,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:13,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:13,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:13,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:14,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:34:14,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 566 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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) [2024-06-28 03:34:14,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:14,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:34:14,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:15,541 INFO L124 PetriNetUnfolderBase]: 8134/11469 cut-off events. [2024-06-28 03:34:15,541 INFO L125 PetriNetUnfolderBase]: For 73067/73159 co-relation queries the response was YES. [2024-06-28 03:34:15,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46713 conditions, 11469 events. 8134/11469 cut-off events. For 73067/73159 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 65199 event pairs, 3552 based on Foata normal form. 87/11526 useless extension candidates. Maximal degree in co-relation 46685. Up to 10852 conditions per place. [2024-06-28 03:34:15,605 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 85 selfloop transitions, 31 changer transitions 0/125 dead transitions. [2024-06-28 03:34:15,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 125 transitions, 934 flow [2024-06-28 03:34:15,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:15,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:15,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-28 03:34:15,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5322128851540616 [2024-06-28 03:34:15,607 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 566 flow. Second operand 7 states and 190 transitions. [2024-06-28 03:34:15,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 125 transitions, 934 flow [2024-06-28 03:34:15,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 125 transitions, 887 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 03:34:15,648 INFO L231 Difference]: Finished difference. Result has 83 places, 87 transitions, 634 flow [2024-06-28 03:34:15,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=634, PETRI_PLACES=83, PETRI_TRANSITIONS=87} [2024-06-28 03:34:15,649 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2024-06-28 03:34:15,649 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 87 transitions, 634 flow [2024-06-28 03:34:15,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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) [2024-06-28 03:34:15,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:15,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:15,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:34:15,649 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:15,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:15,650 INFO L85 PathProgramCache]: Analyzing trace with hash -917083243, now seen corresponding path program 1 times [2024-06-28 03:34:15,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:15,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885700481] [2024-06-28 03:34:15,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:15,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:16,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:16,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885700481] [2024-06-28 03:34:16,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885700481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:16,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:16,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:34:16,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643317633] [2024-06-28 03:34:16,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:16,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:34:16,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:16,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:34:16,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:34:16,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:34:16,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 87 transitions, 634 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) [2024-06-28 03:34:16,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:16,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:34:16,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:17,853 INFO L124 PetriNetUnfolderBase]: 8465/11899 cut-off events. [2024-06-28 03:34:17,853 INFO L125 PetriNetUnfolderBase]: For 83193/83193 co-relation queries the response was YES. [2024-06-28 03:34:17,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50015 conditions, 11899 events. 8465/11899 cut-off events. For 83193/83193 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 65614 event pairs, 3709 based on Foata normal form. 4/11897 useless extension candidates. Maximal degree in co-relation 49985. Up to 11517 conditions per place. [2024-06-28 03:34:17,938 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 96 selfloop transitions, 21 changer transitions 0/124 dead transitions. [2024-06-28 03:34:17,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 124 transitions, 1064 flow [2024-06-28 03:34:17,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:34:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:34:17,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-28 03:34:17,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-06-28 03:34:17,940 INFO L175 Difference]: Start difference. First operand has 83 places, 87 transitions, 634 flow. Second operand 6 states and 156 transitions. [2024-06-28 03:34:17,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 124 transitions, 1064 flow [2024-06-28 03:34:18,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 124 transitions, 985 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:34:18,046 INFO L231 Difference]: Finished difference. Result has 84 places, 95 transitions, 694 flow [2024-06-28 03:34:18,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=694, PETRI_PLACES=84, PETRI_TRANSITIONS=95} [2024-06-28 03:34:18,047 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 30 predicate places. [2024-06-28 03:34:18,047 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 95 transitions, 694 flow [2024-06-28 03:34:18,047 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) [2024-06-28 03:34:18,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:18,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:18,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:34:18,048 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:18,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:18,048 INFO L85 PathProgramCache]: Analyzing trace with hash 518398810, now seen corresponding path program 1 times [2024-06-28 03:34:18,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:18,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512607233] [2024-06-28 03:34:18,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:18,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:19,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:19,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512607233] [2024-06-28 03:34:19,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512607233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:19,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:19,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:19,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97861673] [2024-06-28 03:34:19,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:19,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:19,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:19,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:19,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:19,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:34:19,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 95 transitions, 694 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) [2024-06-28 03:34:19,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:19,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:34:19,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:20,792 INFO L124 PetriNetUnfolderBase]: 8523/11974 cut-off events. [2024-06-28 03:34:20,792 INFO L125 PetriNetUnfolderBase]: For 99030/99030 co-relation queries the response was YES. [2024-06-28 03:34:20,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52650 conditions, 11974 events. 8523/11974 cut-off events. For 99030/99030 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 65935 event pairs, 3526 based on Foata normal form. 6/11966 useless extension candidates. Maximal degree in co-relation 52619. Up to 11416 conditions per place. [2024-06-28 03:34:20,870 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 100 selfloop transitions, 37 changer transitions 0/144 dead transitions. [2024-06-28 03:34:20,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 144 transitions, 1152 flow [2024-06-28 03:34:20,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:20,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:20,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 03:34:20,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5049019607843137 [2024-06-28 03:34:20,871 INFO L175 Difference]: Start difference. First operand has 84 places, 95 transitions, 694 flow. Second operand 8 states and 206 transitions. [2024-06-28 03:34:20,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 144 transitions, 1152 flow [2024-06-28 03:34:20,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 144 transitions, 1110 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 03:34:20,952 INFO L231 Difference]: Finished difference. Result has 91 places, 103 transitions, 827 flow [2024-06-28 03:34:20,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=827, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2024-06-28 03:34:20,954 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 37 predicate places. [2024-06-28 03:34:20,954 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 827 flow [2024-06-28 03:34:20,954 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) [2024-06-28 03:34:20,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:20,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:20,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:34:20,955 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)] === [2024-06-28 03:34:20,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:20,956 INFO L85 PathProgramCache]: Analyzing trace with hash 746299960, now seen corresponding path program 2 times [2024-06-28 03:34:20,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:20,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549856822] [2024-06-28 03:34:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:20,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:21,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:21,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:21,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549856822] [2024-06-28 03:34:21,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549856822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:21,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:21,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:21,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887059078] [2024-06-28 03:34:21,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:21,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:21,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:21,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:21,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:22,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:34:22,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 827 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) [2024-06-28 03:34:22,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:22,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:34:22,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:23,588 INFO L124 PetriNetUnfolderBase]: 8508/11948 cut-off events. [2024-06-28 03:34:23,588 INFO L125 PetriNetUnfolderBase]: For 113352/113352 co-relation queries the response was YES. [2024-06-28 03:34:23,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54803 conditions, 11948 events. 8508/11948 cut-off events. For 113352/113352 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 65775 event pairs, 3523 based on Foata normal form. 6/11940 useless extension candidates. Maximal degree in co-relation 54769. Up to 11395 conditions per place. [2024-06-28 03:34:23,679 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 102 selfloop transitions, 45 changer transitions 0/154 dead transitions. [2024-06-28 03:34:23,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 154 transitions, 1351 flow [2024-06-28 03:34:23,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:23,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:23,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 03:34:23,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5049019607843137 [2024-06-28 03:34:23,681 INFO L175 Difference]: Start difference. First operand has 91 places, 103 transitions, 827 flow. Second operand 8 states and 206 transitions. [2024-06-28 03:34:23,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 154 transitions, 1351 flow [2024-06-28 03:34:23,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 154 transitions, 1233 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 03:34:23,803 INFO L231 Difference]: Finished difference. Result has 95 places, 114 transitions, 956 flow [2024-06-28 03:34:23,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=956, PETRI_PLACES=95, PETRI_TRANSITIONS=114} [2024-06-28 03:34:23,804 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2024-06-28 03:34:23,804 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 114 transitions, 956 flow [2024-06-28 03:34:23,804 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) [2024-06-28 03:34:23,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:23,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:23,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:34:23,805 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)] === [2024-06-28 03:34:23,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:23,805 INFO L85 PathProgramCache]: Analyzing trace with hash 754870840, now seen corresponding path program 3 times [2024-06-28 03:34:23,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:23,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718560402] [2024-06-28 03:34:23,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:23,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:24,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:24,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718560402] [2024-06-28 03:34:24,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718560402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:24,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:24,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:24,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948465867] [2024-06-28 03:34:24,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:24,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:24,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:24,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:24,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:24,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:34:24,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 114 transitions, 956 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) [2024-06-28 03:34:24,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:24,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:34:24,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:26,427 INFO L124 PetriNetUnfolderBase]: 8585/12087 cut-off events. [2024-06-28 03:34:26,427 INFO L125 PetriNetUnfolderBase]: For 128582/128582 co-relation queries the response was YES. [2024-06-28 03:34:26,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57076 conditions, 12087 events. 8585/12087 cut-off events. For 128582/128582 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 66747 event pairs, 3155 based on Foata normal form. 6/12080 useless extension candidates. Maximal degree in co-relation 57040. Up to 11234 conditions per place. [2024-06-28 03:34:26,506 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 100 selfloop transitions, 56 changer transitions 0/163 dead transitions. [2024-06-28 03:34:26,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 163 transitions, 1450 flow [2024-06-28 03:34:26,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:26,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 03:34:26,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147058823529411 [2024-06-28 03:34:26,508 INFO L175 Difference]: Start difference. First operand has 95 places, 114 transitions, 956 flow. Second operand 8 states and 210 transitions. [2024-06-28 03:34:26,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 163 transitions, 1450 flow [2024-06-28 03:34:26,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 163 transitions, 1356 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 03:34:26,622 INFO L231 Difference]: Finished difference. Result has 101 places, 119 transitions, 1075 flow [2024-06-28 03:34:26,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1075, PETRI_PLACES=101, PETRI_TRANSITIONS=119} [2024-06-28 03:34:26,623 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 47 predicate places. [2024-06-28 03:34:26,623 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 119 transitions, 1075 flow [2024-06-28 03:34:26,623 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) [2024-06-28 03:34:26,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:26,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:26,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:34:26,624 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:26,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:26,624 INFO L85 PathProgramCache]: Analyzing trace with hash -905655403, now seen corresponding path program 2 times [2024-06-28 03:34:26,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:26,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214646267] [2024-06-28 03:34:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:26,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:27,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:27,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:27,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214646267] [2024-06-28 03:34:27,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214646267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:27,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:27,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:34:27,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037512823] [2024-06-28 03:34:27,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:27,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:34:27,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:27,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:34:27,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:34:27,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:34:27,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 119 transitions, 1075 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) [2024-06-28 03:34:27,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:27,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:34:27,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:28,951 INFO L124 PetriNetUnfolderBase]: 8571/12096 cut-off events. [2024-06-28 03:34:28,951 INFO L125 PetriNetUnfolderBase]: For 144755/144770 co-relation queries the response was YES. [2024-06-28 03:34:28,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58779 conditions, 12096 events. 8571/12096 cut-off events. For 144755/144770 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 67067 event pairs, 3493 based on Foata normal form. 14/12104 useless extension candidates. Maximal degree in co-relation 58741. Up to 11685 conditions per place. [2024-06-28 03:34:29,034 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 111 selfloop transitions, 21 changer transitions 0/139 dead transitions. [2024-06-28 03:34:29,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 139 transitions, 1389 flow [2024-06-28 03:34:29,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:34:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:34:29,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 03:34:29,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803921568627451 [2024-06-28 03:34:29,035 INFO L175 Difference]: Start difference. First operand has 101 places, 119 transitions, 1075 flow. Second operand 6 states and 147 transitions. [2024-06-28 03:34:29,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 139 transitions, 1389 flow [2024-06-28 03:34:29,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 139 transitions, 1238 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 03:34:29,188 INFO L231 Difference]: Finished difference. Result has 102 places, 119 transitions, 975 flow [2024-06-28 03:34:29,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=975, PETRI_PLACES=102, PETRI_TRANSITIONS=119} [2024-06-28 03:34:29,189 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-06-28 03:34:29,189 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 119 transitions, 975 flow [2024-06-28 03:34:29,189 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) [2024-06-28 03:34:29,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:29,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:29,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:34:29,190 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)] === [2024-06-28 03:34:29,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:29,190 INFO L85 PathProgramCache]: Analyzing trace with hash -905856841, now seen corresponding path program 1 times [2024-06-28 03:34:29,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:29,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858287639] [2024-06-28 03:34:29,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:29,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:29,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:29,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:29,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858287639] [2024-06-28 03:34:29,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858287639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:29,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:29,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:34:29,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423887616] [2024-06-28 03:34:29,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:29,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:34:29,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:29,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:34:29,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:34:30,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:34:30,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 119 transitions, 975 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) [2024-06-28 03:34:30,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:30,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:34:30,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:31,349 INFO L124 PetriNetUnfolderBase]: 7453/10806 cut-off events. [2024-06-28 03:34:31,350 INFO L125 PetriNetUnfolderBase]: For 132962/132962 co-relation queries the response was YES. [2024-06-28 03:34:31,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52179 conditions, 10806 events. 7453/10806 cut-off events. For 132962/132962 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 61645 event pairs, 2905 based on Foata normal form. 4/10802 useless extension candidates. Maximal degree in co-relation 52140. Up to 10202 conditions per place. [2024-06-28 03:34:31,428 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 124 selfloop transitions, 21 changer transitions 0/153 dead transitions. [2024-06-28 03:34:31,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 153 transitions, 1477 flow [2024-06-28 03:34:31,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:34:31,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:34:31,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-28 03:34:31,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163398692810458 [2024-06-28 03:34:31,430 INFO L175 Difference]: Start difference. First operand has 102 places, 119 transitions, 975 flow. Second operand 6 states and 158 transitions. [2024-06-28 03:34:31,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 153 transitions, 1477 flow [2024-06-28 03:34:31,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 153 transitions, 1418 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:34:31,548 INFO L231 Difference]: Finished difference. Result has 103 places, 127 transitions, 1059 flow [2024-06-28 03:34:31,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1059, PETRI_PLACES=103, PETRI_TRANSITIONS=127} [2024-06-28 03:34:31,549 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 49 predicate places. [2024-06-28 03:34:31,549 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 127 transitions, 1059 flow [2024-06-28 03:34:31,550 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) [2024-06-28 03:34:31,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:31,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:31,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:34:31,550 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)] === [2024-06-28 03:34:31,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:31,551 INFO L85 PathProgramCache]: Analyzing trace with hash 325016759, now seen corresponding path program 2 times [2024-06-28 03:34:31,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:31,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756631790] [2024-06-28 03:34:31,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:31,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:32,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:32,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756631790] [2024-06-28 03:34:32,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756631790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:32,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:32,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:34:32,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141664479] [2024-06-28 03:34:32,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:32,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:34:32,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:32,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:34:32,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:34:32,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:34:32,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 127 transitions, 1059 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) [2024-06-28 03:34:32,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:32,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:34:32,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:33,723 INFO L124 PetriNetUnfolderBase]: 7439/10794 cut-off events. [2024-06-28 03:34:33,723 INFO L125 PetriNetUnfolderBase]: For 149528/149534 co-relation queries the response was YES. [2024-06-28 03:34:33,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54379 conditions, 10794 events. 7439/10794 cut-off events. For 149528/149534 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 61669 event pairs, 2888 based on Foata normal form. 8/10797 useless extension candidates. Maximal degree in co-relation 54339. Up to 10190 conditions per place. [2024-06-28 03:34:33,804 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 118 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2024-06-28 03:34:33,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 147 transitions, 1387 flow [2024-06-28 03:34:33,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:34:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:34:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 03:34:33,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49673202614379086 [2024-06-28 03:34:33,807 INFO L175 Difference]: Start difference. First operand has 103 places, 127 transitions, 1059 flow. Second operand 6 states and 152 transitions. [2024-06-28 03:34:33,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 147 transitions, 1387 flow [2024-06-28 03:34:33,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 147 transitions, 1317 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-28 03:34:33,970 INFO L231 Difference]: Finished difference. Result has 107 places, 127 transitions, 1040 flow [2024-06-28 03:34:33,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1040, PETRI_PLACES=107, PETRI_TRANSITIONS=127} [2024-06-28 03:34:33,971 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 53 predicate places. [2024-06-28 03:34:33,971 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 127 transitions, 1040 flow [2024-06-28 03:34:33,971 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) [2024-06-28 03:34:33,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:33,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:33,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:34:33,971 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)] === [2024-06-28 03:34:33,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:33,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1113253575, now seen corresponding path program 1 times [2024-06-28 03:34:33,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:33,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914268384] [2024-06-28 03:34:33,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:33,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:34,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:34,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914268384] [2024-06-28 03:34:34,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914268384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:34,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:34,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:34,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056689652] [2024-06-28 03:34:34,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:34,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:34,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:34,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:34,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:35,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:34:35,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 127 transitions, 1040 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) [2024-06-28 03:34:35,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:35,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:34:35,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:36,731 INFO L124 PetriNetUnfolderBase]: 8699/12292 cut-off events. [2024-06-28 03:34:36,731 INFO L125 PetriNetUnfolderBase]: For 193396/193402 co-relation queries the response was YES. [2024-06-28 03:34:36,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63399 conditions, 12292 events. 8699/12292 cut-off events. For 193396/193402 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 68347 event pairs, 3389 based on Foata normal form. 12/12292 useless extension candidates. Maximal degree in co-relation 63357. Up to 11483 conditions per place. [2024-06-28 03:34:36,813 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 128 selfloop transitions, 52 changer transitions 0/187 dead transitions. [2024-06-28 03:34:36,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 187 transitions, 1838 flow [2024-06-28 03:34:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-28 03:34:36,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378151260504201 [2024-06-28 03:34:36,815 INFO L175 Difference]: Start difference. First operand has 107 places, 127 transitions, 1040 flow. Second operand 7 states and 192 transitions. [2024-06-28 03:34:36,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 187 transitions, 1838 flow [2024-06-28 03:34:36,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 187 transitions, 1783 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:34:36,991 INFO L231 Difference]: Finished difference. Result has 111 places, 145 transitions, 1350 flow [2024-06-28 03:34:36,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1350, PETRI_PLACES=111, PETRI_TRANSITIONS=145} [2024-06-28 03:34:36,991 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-28 03:34:36,991 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 145 transitions, 1350 flow [2024-06-28 03:34:36,992 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) [2024-06-28 03:34:36,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:36,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:36,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:34:36,992 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:36,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:36,992 INFO L85 PathProgramCache]: Analyzing trace with hash 480190040, now seen corresponding path program 1 times [2024-06-28 03:34:36,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:36,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485437800] [2024-06-28 03:34:36,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:36,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:37,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:37,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:37,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485437800] [2024-06-28 03:34:37,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485437800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:37,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:37,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:37,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799644364] [2024-06-28 03:34:37,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:37,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:37,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:37,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:37,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:38,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:34:38,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 145 transitions, 1350 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) [2024-06-28 03:34:38,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:38,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:34:38,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:39,616 INFO L124 PetriNetUnfolderBase]: 8941/12666 cut-off events. [2024-06-28 03:34:39,616 INFO L125 PetriNetUnfolderBase]: For 225986/225989 co-relation queries the response was YES. [2024-06-28 03:34:39,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69322 conditions, 12666 events. 8941/12666 cut-off events. For 225986/225989 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 71186 event pairs, 3495 based on Foata normal form. 18/12667 useless extension candidates. Maximal degree in co-relation 69277. Up to 11555 conditions per place. [2024-06-28 03:34:39,728 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 142 selfloop transitions, 53 changer transitions 0/202 dead transitions. [2024-06-28 03:34:39,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 202 transitions, 1973 flow [2024-06-28 03:34:39,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:39,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:39,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-28 03:34:39,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171568627450981 [2024-06-28 03:34:39,729 INFO L175 Difference]: Start difference. First operand has 111 places, 145 transitions, 1350 flow. Second operand 8 states and 211 transitions. [2024-06-28 03:34:39,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 202 transitions, 1973 flow [2024-06-28 03:34:39,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 202 transitions, 1871 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-28 03:34:39,998 INFO L231 Difference]: Finished difference. Result has 118 places, 154 transitions, 1513 flow [2024-06-28 03:34:39,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1513, PETRI_PLACES=118, PETRI_TRANSITIONS=154} [2024-06-28 03:34:39,998 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-28 03:34:39,998 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 154 transitions, 1513 flow [2024-06-28 03:34:39,999 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) [2024-06-28 03:34:39,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:39,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:39,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:34:39,999 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)] === [2024-06-28 03:34:39,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:39,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1635191559, now seen corresponding path program 2 times [2024-06-28 03:34:40,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:40,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148261512] [2024-06-28 03:34:40,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:40,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:40,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:40,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:40,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148261512] [2024-06-28 03:34:40,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148261512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:40,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:40,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:40,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448491326] [2024-06-28 03:34:40,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:40,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:40,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:40,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:40,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:41,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:34:41,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 154 transitions, 1513 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) [2024-06-28 03:34:41,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:41,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:34:41,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:42,695 INFO L124 PetriNetUnfolderBase]: 9107/12916 cut-off events. [2024-06-28 03:34:42,696 INFO L125 PetriNetUnfolderBase]: For 242158/242164 co-relation queries the response was YES. [2024-06-28 03:34:42,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71640 conditions, 12916 events. 9107/12916 cut-off events. For 242158/242164 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 72636 event pairs, 3437 based on Foata normal form. 12/12917 useless extension candidates. Maximal degree in co-relation 71592. Up to 11973 conditions per place. [2024-06-28 03:34:42,824 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 135 selfloop transitions, 58 changer transitions 0/200 dead transitions. [2024-06-28 03:34:42,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 200 transitions, 2273 flow [2024-06-28 03:34:42,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:42,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-28 03:34:42,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2024-06-28 03:34:42,825 INFO L175 Difference]: Start difference. First operand has 118 places, 154 transitions, 1513 flow. Second operand 7 states and 186 transitions. [2024-06-28 03:34:42,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 200 transitions, 2273 flow [2024-06-28 03:34:43,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 200 transitions, 2185 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 03:34:43,160 INFO L231 Difference]: Finished difference. Result has 123 places, 164 transitions, 1699 flow [2024-06-28 03:34:43,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1699, PETRI_PLACES=123, PETRI_TRANSITIONS=164} [2024-06-28 03:34:43,161 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 69 predicate places. [2024-06-28 03:34:43,161 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 164 transitions, 1699 flow [2024-06-28 03:34:43,162 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) [2024-06-28 03:34:43,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:43,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:43,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:34:43,162 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)] === [2024-06-28 03:34:43,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:43,163 INFO L85 PathProgramCache]: Analyzing trace with hash 631870854, now seen corresponding path program 2 times [2024-06-28 03:34:43,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:43,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493418295] [2024-06-28 03:34:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:43,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:44,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:44,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493418295] [2024-06-28 03:34:44,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493418295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:44,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:44,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:44,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395072629] [2024-06-28 03:34:44,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:44,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:44,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:44,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:44,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:44,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:34:44,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 164 transitions, 1699 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) [2024-06-28 03:34:44,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:44,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:34:44,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:45,900 INFO L124 PetriNetUnfolderBase]: 9068/12841 cut-off events. [2024-06-28 03:34:45,900 INFO L125 PetriNetUnfolderBase]: For 259135/259138 co-relation queries the response was YES. [2024-06-28 03:34:45,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71978 conditions, 12841 events. 9068/12841 cut-off events. For 259135/259138 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 71984 event pairs, 2539 based on Foata normal form. 18/12832 useless extension candidates. Maximal degree in co-relation 71928. Up to 11036 conditions per place. [2024-06-28 03:34:46,007 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 138 selfloop transitions, 61 changer transitions 0/206 dead transitions. [2024-06-28 03:34:46,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 206 transitions, 2217 flow [2024-06-28 03:34:46,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:46,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:46,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 03:34:46,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266106442577031 [2024-06-28 03:34:46,009 INFO L175 Difference]: Start difference. First operand has 123 places, 164 transitions, 1699 flow. Second operand 7 states and 188 transitions. [2024-06-28 03:34:46,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 206 transitions, 2217 flow [2024-06-28 03:34:46,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 206 transitions, 2095 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 03:34:46,403 INFO L231 Difference]: Finished difference. Result has 127 places, 164 transitions, 1712 flow [2024-06-28 03:34:46,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1712, PETRI_PLACES=127, PETRI_TRANSITIONS=164} [2024-06-28 03:34:46,404 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-06-28 03:34:46,404 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 164 transitions, 1712 flow [2024-06-28 03:34:46,404 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) [2024-06-28 03:34:46,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:46,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:46,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:34:46,405 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:46,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:46,405 INFO L85 PathProgramCache]: Analyzing trace with hash 921099850, now seen corresponding path program 3 times [2024-06-28 03:34:46,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:46,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283282022] [2024-06-28 03:34:46,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:46,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:47,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:47,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283282022] [2024-06-28 03:34:47,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283282022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:47,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:47,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:47,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110890085] [2024-06-28 03:34:47,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:47,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:47,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:47,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:47,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:47,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:34:47,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 164 transitions, 1712 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) [2024-06-28 03:34:47,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:47,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:34:47,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:49,056 INFO L124 PetriNetUnfolderBase]: 9029/12798 cut-off events. [2024-06-28 03:34:49,056 INFO L125 PetriNetUnfolderBase]: For 274301/274304 co-relation queries the response was YES. [2024-06-28 03:34:49,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72125 conditions, 12798 events. 9029/12798 cut-off events. For 274301/274304 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 71833 event pairs, 2137 based on Foata normal form. 18/12790 useless extension candidates. Maximal degree in co-relation 72074. Up to 10797 conditions per place. [2024-06-28 03:34:49,174 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 132 selfloop transitions, 63 changer transitions 0/202 dead transitions. [2024-06-28 03:34:49,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 202 transitions, 2216 flow [2024-06-28 03:34:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:49,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:49,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 03:34:49,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070028011204482 [2024-06-28 03:34:49,176 INFO L175 Difference]: Start difference. First operand has 127 places, 164 transitions, 1712 flow. Second operand 7 states and 181 transitions. [2024-06-28 03:34:49,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 202 transitions, 2216 flow [2024-06-28 03:34:49,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 202 transitions, 2054 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 03:34:49,664 INFO L231 Difference]: Finished difference. Result has 127 places, 165 transitions, 1695 flow [2024-06-28 03:34:49,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1695, PETRI_PLACES=127, PETRI_TRANSITIONS=165} [2024-06-28 03:34:49,665 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-06-28 03:34:49,665 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 165 transitions, 1695 flow [2024-06-28 03:34:49,665 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) [2024-06-28 03:34:49,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:49,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:49,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:34:49,666 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)] === [2024-06-28 03:34:49,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:49,666 INFO L85 PathProgramCache]: Analyzing trace with hash 266353725, now seen corresponding path program 3 times [2024-06-28 03:34:49,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:49,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562580927] [2024-06-28 03:34:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:49,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:50,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:50,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:50,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562580927] [2024-06-28 03:34:50,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562580927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:50,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:50,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:50,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518698025] [2024-06-28 03:34:50,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:50,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:50,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:50,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:50,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:50,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:34:50,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 165 transitions, 1695 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) [2024-06-28 03:34:50,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:50,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:34:50,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:52,244 INFO L124 PetriNetUnfolderBase]: 9011/12761 cut-off events. [2024-06-28 03:34:52,244 INFO L125 PetriNetUnfolderBase]: For 273414/273435 co-relation queries the response was YES. [2024-06-28 03:34:52,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72310 conditions, 12761 events. 9011/12761 cut-off events. For 273414/273435 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 71382 event pairs, 3423 based on Foata normal form. 22/12765 useless extension candidates. Maximal degree in co-relation 72258. Up to 11851 conditions per place. [2024-06-28 03:34:52,359 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 129 selfloop transitions, 58 changer transitions 0/194 dead transitions. [2024-06-28 03:34:52,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 194 transitions, 2315 flow [2024-06-28 03:34:52,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:52,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 03:34:52,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014005602240896 [2024-06-28 03:34:52,360 INFO L175 Difference]: Start difference. First operand has 127 places, 165 transitions, 1695 flow. Second operand 7 states and 179 transitions. [2024-06-28 03:34:52,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 194 transitions, 2315 flow [2024-06-28 03:34:52,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 194 transitions, 2140 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 03:34:52,666 INFO L231 Difference]: Finished difference. Result has 129 places, 165 transitions, 1647 flow [2024-06-28 03:34:52,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1647, PETRI_PLACES=129, PETRI_TRANSITIONS=165} [2024-06-28 03:34:52,666 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2024-06-28 03:34:52,666 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 165 transitions, 1647 flow [2024-06-28 03:34:52,666 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) [2024-06-28 03:34:52,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:52,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:52,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:34:52,667 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:52,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:52,667 INFO L85 PathProgramCache]: Analyzing trace with hash 375154463, now seen corresponding path program 1 times [2024-06-28 03:34:52,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:52,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291634225] [2024-06-28 03:34:52,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:52,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:53,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:53,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291634225] [2024-06-28 03:34:53,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291634225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:53,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:53,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:53,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651771567] [2024-06-28 03:34:53,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:53,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:53,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:53,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:53,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:53,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:34:53,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 165 transitions, 1647 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) [2024-06-28 03:34:53,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:53,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:34:53,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:55,148 INFO L124 PetriNetUnfolderBase]: 7893/11488 cut-off events. [2024-06-28 03:34:55,148 INFO L125 PetriNetUnfolderBase]: For 242017/242017 co-relation queries the response was YES. [2024-06-28 03:34:55,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64273 conditions, 11488 events. 7893/11488 cut-off events. For 242017/242017 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 66621 event pairs, 2912 based on Foata normal form. 4/11487 useless extension candidates. Maximal degree in co-relation 64220. Up to 10846 conditions per place. [2024-06-28 03:34:55,257 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 172 selfloop transitions, 18 changer transitions 0/198 dead transitions. [2024-06-28 03:34:55,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 198 transitions, 2153 flow [2024-06-28 03:34:55,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:55,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 03:34:55,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49299719887955185 [2024-06-28 03:34:55,258 INFO L175 Difference]: Start difference. First operand has 129 places, 165 transitions, 1647 flow. Second operand 7 states and 176 transitions. [2024-06-28 03:34:55,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 198 transitions, 2153 flow [2024-06-28 03:34:55,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 198 transitions, 1994 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 03:34:55,522 INFO L231 Difference]: Finished difference. Result has 130 places, 169 transitions, 1593 flow [2024-06-28 03:34:55,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1593, PETRI_PLACES=130, PETRI_TRANSITIONS=169} [2024-06-28 03:34:55,523 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-28 03:34:55,523 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 169 transitions, 1593 flow [2024-06-28 03:34:55,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-06-28 03:34:55,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:55,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:55,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:34:55,523 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:55,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:55,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1812507777, now seen corresponding path program 2 times [2024-06-28 03:34:55,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:55,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804426807] [2024-06-28 03:34:55,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:55,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:56,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:56,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804426807] [2024-06-28 03:34:56,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804426807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:56,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:56,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:56,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531217046] [2024-06-28 03:34:56,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:56,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:56,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:56,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:56,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:56,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:34:56,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 169 transitions, 1593 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) [2024-06-28 03:34:56,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:56,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:34:56,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:58,073 INFO L124 PetriNetUnfolderBase]: 7925/11554 cut-off events. [2024-06-28 03:34:58,074 INFO L125 PetriNetUnfolderBase]: For 260813/260813 co-relation queries the response was YES. [2024-06-28 03:34:58,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65928 conditions, 11554 events. 7925/11554 cut-off events. For 260813/260813 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 67037 event pairs, 2860 based on Foata normal form. 4/11548 useless extension candidates. Maximal degree in co-relation 65876. Up to 10777 conditions per place. [2024-06-28 03:34:58,157 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 165 selfloop transitions, 35 changer transitions 0/208 dead transitions. [2024-06-28 03:34:58,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 208 transitions, 2285 flow [2024-06-28 03:34:58,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:58,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:58,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 03:34:58,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-06-28 03:34:58,159 INFO L175 Difference]: Start difference. First operand has 130 places, 169 transitions, 1593 flow. Second operand 7 states and 182 transitions. [2024-06-28 03:34:58,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 208 transitions, 2285 flow [2024-06-28 03:34:58,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 208 transitions, 2210 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 03:34:58,392 INFO L231 Difference]: Finished difference. Result has 132 places, 177 transitions, 1725 flow [2024-06-28 03:34:58,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1725, PETRI_PLACES=132, PETRI_TRANSITIONS=177} [2024-06-28 03:34:58,393 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 78 predicate places. [2024-06-28 03:34:58,393 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 177 transitions, 1725 flow [2024-06-28 03:34:58,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-06-28 03:34:58,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:58,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:58,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:34:58,393 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)] === [2024-06-28 03:34:58,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:58,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1485586143, now seen corresponding path program 3 times [2024-06-28 03:34:58,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:58,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805512599] [2024-06-28 03:34:58,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:58,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:59,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:59,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805512599] [2024-06-28 03:34:59,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805512599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:59,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:59,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:59,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352482110] [2024-06-28 03:34:59,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:59,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:59,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:59,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:59,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:59,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:34:59,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 177 transitions, 1725 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) [2024-06-28 03:34:59,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:59,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:34:59,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:00,820 INFO L124 PetriNetUnfolderBase]: 7911/11538 cut-off events. [2024-06-28 03:35:00,820 INFO L125 PetriNetUnfolderBase]: For 283495/283498 co-relation queries the response was YES. [2024-06-28 03:35:00,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68035 conditions, 11538 events. 7911/11538 cut-off events. For 283495/283498 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 66864 event pairs, 2830 based on Foata normal form. 4/11535 useless extension candidates. Maximal degree in co-relation 67982. Up to 10765 conditions per place. [2024-06-28 03:35:00,933 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 159 selfloop transitions, 35 changer transitions 0/202 dead transitions. [2024-06-28 03:35:00,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 202 transitions, 2175 flow [2024-06-28 03:35:00,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:00,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:00,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 03:35:00,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49299719887955185 [2024-06-28 03:35:00,934 INFO L175 Difference]: Start difference. First operand has 132 places, 177 transitions, 1725 flow. Second operand 7 states and 176 transitions. [2024-06-28 03:35:00,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 202 transitions, 2175 flow [2024-06-28 03:35:01,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 202 transitions, 2067 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:01,283 INFO L231 Difference]: Finished difference. Result has 136 places, 177 transitions, 1696 flow [2024-06-28 03:35:01,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1617, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1696, PETRI_PLACES=136, PETRI_TRANSITIONS=177} [2024-06-28 03:35:01,284 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2024-06-28 03:35:01,284 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 177 transitions, 1696 flow [2024-06-28 03:35:01,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-06-28 03:35:01,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:01,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:01,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:35:01,284 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)] === [2024-06-28 03:35:01,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:01,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1989885561, now seen corresponding path program 1 times [2024-06-28 03:35:01,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:01,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381294718] [2024-06-28 03:35:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:01,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:02,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:02,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381294718] [2024-06-28 03:35:02,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381294718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:02,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:02,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:02,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36956066] [2024-06-28 03:35:02,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:02,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:02,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:02,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:02,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:02,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:35:02,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 177 transitions, 1696 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) [2024-06-28 03:35:02,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:02,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:35:02,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:04,376 INFO L124 PetriNetUnfolderBase]: 7899/11526 cut-off events. [2024-06-28 03:35:04,377 INFO L125 PetriNetUnfolderBase]: For 299010/299010 co-relation queries the response was YES. [2024-06-28 03:35:04,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68096 conditions, 11526 events. 7899/11526 cut-off events. For 299010/299010 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 66977 event pairs, 2850 based on Foata normal form. 4/11527 useless extension candidates. Maximal degree in co-relation 68041. Up to 10866 conditions per place. [2024-06-28 03:35:04,490 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 182 selfloop transitions, 17 changer transitions 0/207 dead transitions. [2024-06-28 03:35:04,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 207 transitions, 2248 flow [2024-06-28 03:35:04,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 03:35:04,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4733893557422969 [2024-06-28 03:35:04,492 INFO L175 Difference]: Start difference. First operand has 136 places, 177 transitions, 1696 flow. Second operand 7 states and 169 transitions. [2024-06-28 03:35:04,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 207 transitions, 2248 flow [2024-06-28 03:35:04,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 207 transitions, 2131 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:35:04,896 INFO L231 Difference]: Finished difference. Result has 137 places, 184 transitions, 1730 flow [2024-06-28 03:35:04,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1730, PETRI_PLACES=137, PETRI_TRANSITIONS=184} [2024-06-28 03:35:04,897 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 83 predicate places. [2024-06-28 03:35:04,897 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 184 transitions, 1730 flow [2024-06-28 03:35:04,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-06-28 03:35:04,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:04,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:04,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:35:04,898 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:04,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:04,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1146475545, now seen corresponding path program 1 times [2024-06-28 03:35:04,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:04,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078379855] [2024-06-28 03:35:04,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:04,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:05,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:05,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078379855] [2024-06-28 03:35:05,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078379855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:05,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:05,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:35:05,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101053932] [2024-06-28 03:35:05,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:05,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:35:05,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:05,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:35:05,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:35:05,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-06-28 03:35:05,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 184 transitions, 1730 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:05,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:05,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-06-28 03:35:05,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:07,255 INFO L124 PetriNetUnfolderBase]: 7485/11166 cut-off events. [2024-06-28 03:35:07,256 INFO L125 PetriNetUnfolderBase]: For 310327/310463 co-relation queries the response was YES. [2024-06-28 03:35:07,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68315 conditions, 11166 events. 7485/11166 cut-off events. For 310327/310463 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 67266 event pairs, 2674 based on Foata normal form. 1/11048 useless extension candidates. Maximal degree in co-relation 68259. Up to 10224 conditions per place. [2024-06-28 03:35:07,360 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 169 selfloop transitions, 10 changer transitions 0/199 dead transitions. [2024-06-28 03:35:07,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 199 transitions, 2170 flow [2024-06-28 03:35:07,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:35:07,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:35:07,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-28 03:35:07,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2024-06-28 03:35:07,361 INFO L175 Difference]: Start difference. First operand has 137 places, 184 transitions, 1730 flow. Second operand 5 states and 125 transitions. [2024-06-28 03:35:07,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 199 transitions, 2170 flow [2024-06-28 03:35:07,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 199 transitions, 2088 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:07,720 INFO L231 Difference]: Finished difference. Result has 138 places, 188 transitions, 1737 flow [2024-06-28 03:35:07,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1648, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1737, PETRI_PLACES=138, PETRI_TRANSITIONS=188} [2024-06-28 03:35:07,721 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 84 predicate places. [2024-06-28 03:35:07,721 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 188 transitions, 1737 flow [2024-06-28 03:35:07,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:07,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:07,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:07,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:35:07,722 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)] === [2024-06-28 03:35:07,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:07,723 INFO L85 PathProgramCache]: Analyzing trace with hash -854378124, now seen corresponding path program 1 times [2024-06-28 03:35:07,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:07,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633220080] [2024-06-28 03:35:07,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:07,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:08,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:08,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:08,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633220080] [2024-06-28 03:35:08,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633220080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:08,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:08,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:08,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208420715] [2024-06-28 03:35:08,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:08,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:08,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:08,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:08,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:08,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:08,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 188 transitions, 1737 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) [2024-06-28 03:35:08,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:08,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:08,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:10,697 INFO L124 PetriNetUnfolderBase]: 9197/13025 cut-off events. [2024-06-28 03:35:10,697 INFO L125 PetriNetUnfolderBase]: For 404635/404644 co-relation queries the response was YES. [2024-06-28 03:35:10,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83203 conditions, 13025 events. 9197/13025 cut-off events. For 404635/404644 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 72918 event pairs, 3364 based on Foata normal form. 12/13029 useless extension candidates. Maximal degree in co-relation 83146. Up to 11993 conditions per place. [2024-06-28 03:35:10,797 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 158 selfloop transitions, 75 changer transitions 0/240 dead transitions. [2024-06-28 03:35:10,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 240 transitions, 2707 flow [2024-06-28 03:35:10,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:10,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:10,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 03:35:10,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266106442577031 [2024-06-28 03:35:10,799 INFO L175 Difference]: Start difference. First operand has 138 places, 188 transitions, 1737 flow. Second operand 7 states and 188 transitions. [2024-06-28 03:35:10,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 240 transitions, 2707 flow [2024-06-28 03:35:11,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 240 transitions, 2646 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:11,216 INFO L231 Difference]: Finished difference. Result has 143 places, 201 transitions, 2042 flow [2024-06-28 03:35:11,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1676, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2042, PETRI_PLACES=143, PETRI_TRANSITIONS=201} [2024-06-28 03:35:11,217 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2024-06-28 03:35:11,217 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 201 transitions, 2042 flow [2024-06-28 03:35:11,217 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) [2024-06-28 03:35:11,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:11,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:11,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:35:11,218 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:11,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:11,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1893276150, now seen corresponding path program 2 times [2024-06-28 03:35:11,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:11,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862346854] [2024-06-28 03:35:11,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:11,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:12,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862346854] [2024-06-28 03:35:12,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862346854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:12,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:12,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:12,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717783082] [2024-06-28 03:35:12,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:12,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:12,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:12,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:12,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:12,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:12,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 201 transitions, 2042 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) [2024-06-28 03:35:12,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:12,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:12,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:13,981 INFO L124 PetriNetUnfolderBase]: 9169/12985 cut-off events. [2024-06-28 03:35:13,982 INFO L125 PetriNetUnfolderBase]: For 423984/423993 co-relation queries the response was YES. [2024-06-28 03:35:14,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84443 conditions, 12985 events. 9169/12985 cut-off events. For 423984/423993 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 72693 event pairs, 3339 based on Foata normal form. 12/12989 useless extension candidates. Maximal degree in co-relation 84384. Up to 11973 conditions per place. [2024-06-28 03:35:14,122 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 159 selfloop transitions, 71 changer transitions 0/237 dead transitions. [2024-06-28 03:35:14,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 237 transitions, 2826 flow [2024-06-28 03:35:14,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:14,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:14,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-28 03:35:14,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182072829131653 [2024-06-28 03:35:14,123 INFO L175 Difference]: Start difference. First operand has 143 places, 201 transitions, 2042 flow. Second operand 7 states and 185 transitions. [2024-06-28 03:35:14,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 237 transitions, 2826 flow [2024-06-28 03:35:14,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 237 transitions, 2705 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:14,670 INFO L231 Difference]: Finished difference. Result has 147 places, 201 transitions, 2075 flow [2024-06-28 03:35:14,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2075, PETRI_PLACES=147, PETRI_TRANSITIONS=201} [2024-06-28 03:35:14,670 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 93 predicate places. [2024-06-28 03:35:14,671 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 201 transitions, 2075 flow [2024-06-28 03:35:14,671 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) [2024-06-28 03:35:14,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:14,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:14,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:35:14,671 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:14,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:14,672 INFO L85 PathProgramCache]: Analyzing trace with hash -60445024, now seen corresponding path program 3 times [2024-06-28 03:35:14,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:14,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274976549] [2024-06-28 03:35:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:14,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:15,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:15,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274976549] [2024-06-28 03:35:15,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274976549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:15,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:15,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:15,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478678993] [2024-06-28 03:35:15,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:15,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:15,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:15,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:15,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:15,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:15,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 201 transitions, 2075 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) [2024-06-28 03:35:15,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:15,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:15,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:17,411 INFO L124 PetriNetUnfolderBase]: 9145/12931 cut-off events. [2024-06-28 03:35:17,411 INFO L125 PetriNetUnfolderBase]: For 446130/446139 co-relation queries the response was YES. [2024-06-28 03:35:17,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84870 conditions, 12931 events. 9145/12931 cut-off events. For 446130/446139 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 72156 event pairs, 3375 based on Foata normal form. 8/12920 useless extension candidates. Maximal degree in co-relation 84810. Up to 11953 conditions per place. [2024-06-28 03:35:17,539 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 152 selfloop transitions, 78 changer transitions 0/237 dead transitions. [2024-06-28 03:35:17,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 237 transitions, 2867 flow [2024-06-28 03:35:17,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:17,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-28 03:35:17,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182072829131653 [2024-06-28 03:35:17,540 INFO L175 Difference]: Start difference. First operand has 147 places, 201 transitions, 2075 flow. Second operand 7 states and 185 transitions. [2024-06-28 03:35:17,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 237 transitions, 2867 flow [2024-06-28 03:35:18,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 237 transitions, 2710 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:18,036 INFO L231 Difference]: Finished difference. Result has 150 places, 201 transitions, 2083 flow [2024-06-28 03:35:18,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2083, PETRI_PLACES=150, PETRI_TRANSITIONS=201} [2024-06-28 03:35:18,036 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 96 predicate places. [2024-06-28 03:35:18,037 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 201 transitions, 2083 flow [2024-06-28 03:35:18,037 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) [2024-06-28 03:35:18,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:18,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:18,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:35:18,037 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:18,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:18,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2103856050, now seen corresponding path program 4 times [2024-06-28 03:35:18,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:18,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155820521] [2024-06-28 03:35:18,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:18,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:18,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:18,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155820521] [2024-06-28 03:35:18,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155820521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:18,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:18,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:18,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697974134] [2024-06-28 03:35:18,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:18,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:18,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:18,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:18,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:18,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:18,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 201 transitions, 2083 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) [2024-06-28 03:35:18,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:18,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:18,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:20,801 INFO L124 PetriNetUnfolderBase]: 9177/12978 cut-off events. [2024-06-28 03:35:20,801 INFO L125 PetriNetUnfolderBase]: For 470429/470438 co-relation queries the response was YES. [2024-06-28 03:35:20,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85961 conditions, 12978 events. 9177/12978 cut-off events. For 470429/470438 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 72544 event pairs, 3382 based on Foata normal form. 8/12967 useless extension candidates. Maximal degree in co-relation 85900. Up to 11972 conditions per place. [2024-06-28 03:35:20,935 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 147 selfloop transitions, 82 changer transitions 0/236 dead transitions. [2024-06-28 03:35:20,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 236 transitions, 2820 flow [2024-06-28 03:35:20,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:20,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:20,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 03:35:20,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070028011204482 [2024-06-28 03:35:20,937 INFO L175 Difference]: Start difference. First operand has 150 places, 201 transitions, 2083 flow. Second operand 7 states and 181 transitions. [2024-06-28 03:35:20,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 236 transitions, 2820 flow [2024-06-28 03:35:21,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 236 transitions, 2479 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 03:35:21,674 INFO L231 Difference]: Finished difference. Result has 148 places, 205 transitions, 1988 flow [2024-06-28 03:35:21,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1988, PETRI_PLACES=148, PETRI_TRANSITIONS=205} [2024-06-28 03:35:21,675 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 94 predicate places. [2024-06-28 03:35:21,675 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 205 transitions, 1988 flow [2024-06-28 03:35:21,675 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) [2024-06-28 03:35:21,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:21,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:21,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:35:21,675 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:21,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:21,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1191476522, now seen corresponding path program 5 times [2024-06-28 03:35:21,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:21,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944978925] [2024-06-28 03:35:21,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:21,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:22,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:22,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944978925] [2024-06-28 03:35:22,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944978925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:22,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:22,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:22,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196906580] [2024-06-28 03:35:22,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:22,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:22,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:22,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:22,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:22,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:22,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 205 transitions, 1988 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) [2024-06-28 03:35:22,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:22,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:22,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:24,627 INFO L124 PetriNetUnfolderBase]: 9163/12968 cut-off events. [2024-06-28 03:35:24,627 INFO L125 PetriNetUnfolderBase]: For 489257/489272 co-relation queries the response was YES. [2024-06-28 03:35:24,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86050 conditions, 12968 events. 9163/12968 cut-off events. For 489257/489272 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 72570 event pairs, 3348 based on Foata normal form. 14/12964 useless extension candidates. Maximal degree in co-relation 85989. Up to 11964 conditions per place. [2024-06-28 03:35:24,735 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 148 selfloop transitions, 77 changer transitions 0/232 dead transitions. [2024-06-28 03:35:24,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 232 transitions, 2636 flow [2024-06-28 03:35:24,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:24,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:24,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 03:35:24,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49299719887955185 [2024-06-28 03:35:24,736 INFO L175 Difference]: Start difference. First operand has 148 places, 205 transitions, 1988 flow. Second operand 7 states and 176 transitions. [2024-06-28 03:35:24,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 232 transitions, 2636 flow [2024-06-28 03:35:25,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 232 transitions, 2468 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:25,275 INFO L231 Difference]: Finished difference. Result has 151 places, 205 transitions, 1983 flow [2024-06-28 03:35:25,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1983, PETRI_PLACES=151, PETRI_TRANSITIONS=205} [2024-06-28 03:35:25,275 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 97 predicate places. [2024-06-28 03:35:25,275 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 205 transitions, 1983 flow [2024-06-28 03:35:25,275 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) [2024-06-28 03:35:25,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:25,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:25,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:35:25,276 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:25,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:25,276 INFO L85 PathProgramCache]: Analyzing trace with hash -332964098, now seen corresponding path program 6 times [2024-06-28 03:35:25,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:25,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864093453] [2024-06-28 03:35:25,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:25,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:26,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:26,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:26,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864093453] [2024-06-28 03:35:26,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864093453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:26,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:26,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:26,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810874924] [2024-06-28 03:35:26,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:26,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:26,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:26,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:26,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:26,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:26,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 205 transitions, 1983 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) [2024-06-28 03:35:26,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:26,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:26,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:27,952 INFO L124 PetriNetUnfolderBase]: 9125/12914 cut-off events. [2024-06-28 03:35:27,952 INFO L125 PetriNetUnfolderBase]: For 512272/512287 co-relation queries the response was YES. [2024-06-28 03:35:28,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86223 conditions, 12914 events. 9125/12914 cut-off events. For 512272/512287 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 72222 event pairs, 3346 based on Foata normal form. 18/12914 useless extension candidates. Maximal degree in co-relation 86161. Up to 11932 conditions per place. [2024-06-28 03:35:28,323 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 150 selfloop transitions, 73 changer transitions 0/230 dead transitions. [2024-06-28 03:35:28,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 230 transitions, 2497 flow [2024-06-28 03:35:28,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:28,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:28,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 03:35:28,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2024-06-28 03:35:28,325 INFO L175 Difference]: Start difference. First operand has 151 places, 205 transitions, 1983 flow. Second operand 7 states and 175 transitions. [2024-06-28 03:35:28,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 230 transitions, 2497 flow [2024-06-28 03:35:28,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 230 transitions, 2306 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 03:35:28,848 INFO L231 Difference]: Finished difference. Result has 153 places, 205 transitions, 1949 flow [2024-06-28 03:35:28,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1949, PETRI_PLACES=153, PETRI_TRANSITIONS=205} [2024-06-28 03:35:28,848 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-28 03:35:28,849 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 205 transitions, 1949 flow [2024-06-28 03:35:28,849 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) [2024-06-28 03:35:28,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:28,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:28,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:35:28,849 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:28,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:28,850 INFO L85 PathProgramCache]: Analyzing trace with hash -951306784, now seen corresponding path program 1 times [2024-06-28 03:35:28,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:28,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220692145] [2024-06-28 03:35:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:28,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:29,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:29,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:29,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220692145] [2024-06-28 03:35:29,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220692145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:29,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:29,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:29,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347143470] [2024-06-28 03:35:29,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:29,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:29,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:29,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:29,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:29,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:29,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 205 transitions, 1949 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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) [2024-06-28 03:35:29,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:29,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:29,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:31,958 INFO L124 PetriNetUnfolderBase]: 10531/14974 cut-off events. [2024-06-28 03:35:31,959 INFO L125 PetriNetUnfolderBase]: For 591819/591840 co-relation queries the response was YES. [2024-06-28 03:35:32,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99074 conditions, 14974 events. 10531/14974 cut-off events. For 591819/591840 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 85697 event pairs, 3400 based on Foata normal form. 48/15014 useless extension candidates. Maximal degree in co-relation 99011. Up to 12710 conditions per place. [2024-06-28 03:35:32,119 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 204 selfloop transitions, 154 changer transitions 0/365 dead transitions. [2024-06-28 03:35:32,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 365 transitions, 4085 flow [2024-06-28 03:35:32,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:35:32,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:35:32,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-06-28 03:35:32,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381263616557734 [2024-06-28 03:35:32,120 INFO L175 Difference]: Start difference. First operand has 153 places, 205 transitions, 1949 flow. Second operand 9 states and 247 transitions. [2024-06-28 03:35:32,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 365 transitions, 4085 flow [2024-06-28 03:35:33,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 365 transitions, 3736 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:35:33,465 INFO L231 Difference]: Finished difference. Result has 159 places, 293 transitions, 3088 flow [2024-06-28 03:35:33,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3088, PETRI_PLACES=159, PETRI_TRANSITIONS=293} [2024-06-28 03:35:33,465 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 105 predicate places. [2024-06-28 03:35:33,465 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 293 transitions, 3088 flow [2024-06-28 03:35:33,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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) [2024-06-28 03:35:33,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:33,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:33,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:35:33,466 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:33,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:33,467 INFO L85 PathProgramCache]: Analyzing trace with hash -834366684, now seen corresponding path program 2 times [2024-06-28 03:35:33,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:33,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065993977] [2024-06-28 03:35:33,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:33,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:34,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:34,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:34,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065993977] [2024-06-28 03:35:34,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065993977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:34,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:34,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:34,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452030514] [2024-06-28 03:35:34,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:34,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:34,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:34,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:34,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:34,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:34,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 293 transitions, 3088 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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) [2024-06-28 03:35:34,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:34,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:34,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:37,134 INFO L124 PetriNetUnfolderBase]: 11011/15681 cut-off events. [2024-06-28 03:35:37,135 INFO L125 PetriNetUnfolderBase]: For 664813/664838 co-relation queries the response was YES. [2024-06-28 03:35:37,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108953 conditions, 15681 events. 11011/15681 cut-off events. For 664813/664838 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 90297 event pairs, 2941 based on Foata normal form. 52/15725 useless extension candidates. Maximal degree in co-relation 108885. Up to 12653 conditions per place. [2024-06-28 03:35:37,307 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 175 selfloop transitions, 175 changer transitions 0/357 dead transitions. [2024-06-28 03:35:37,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 357 transitions, 4286 flow [2024-06-28 03:35:37,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:37,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-06-28 03:35:37,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367647058823529 [2024-06-28 03:35:37,313 INFO L175 Difference]: Start difference. First operand has 159 places, 293 transitions, 3088 flow. Second operand 8 states and 219 transitions. [2024-06-28 03:35:37,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 357 transitions, 4286 flow [2024-06-28 03:35:38,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 357 transitions, 4227 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 03:35:38,621 INFO L231 Difference]: Finished difference. Result has 166 places, 301 transitions, 3588 flow [2024-06-28 03:35:38,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3588, PETRI_PLACES=166, PETRI_TRANSITIONS=301} [2024-06-28 03:35:38,621 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 112 predicate places. [2024-06-28 03:35:38,621 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 301 transitions, 3588 flow [2024-06-28 03:35:38,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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) [2024-06-28 03:35:38,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:38,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:38,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:35:38,622 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:38,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:38,622 INFO L85 PathProgramCache]: Analyzing trace with hash -825795804, now seen corresponding path program 3 times [2024-06-28 03:35:38,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:38,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178184754] [2024-06-28 03:35:38,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:38,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:39,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:39,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:39,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178184754] [2024-06-28 03:35:39,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178184754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:39,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:39,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:39,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209206423] [2024-06-28 03:35:39,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:39,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:39,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:39,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:39,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:39,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:39,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 301 transitions, 3588 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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) [2024-06-28 03:35:39,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:39,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:39,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:42,671 INFO L124 PetriNetUnfolderBase]: 11511/16385 cut-off events. [2024-06-28 03:35:42,671 INFO L125 PetriNetUnfolderBase]: For 757262/757287 co-relation queries the response was YES. [2024-06-28 03:35:42,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118424 conditions, 16385 events. 11511/16385 cut-off events. For 757262/757287 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 94953 event pairs, 3618 based on Foata normal form. 100/16477 useless extension candidates. Maximal degree in co-relation 118353. Up to 14200 conditions per place. [2024-06-28 03:35:42,998 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 185 selfloop transitions, 164 changer transitions 0/356 dead transitions. [2024-06-28 03:35:42,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 356 transitions, 4617 flow [2024-06-28 03:35:42,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:43,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-28 03:35:43,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196078431372549 [2024-06-28 03:35:43,000 INFO L175 Difference]: Start difference. First operand has 166 places, 301 transitions, 3588 flow. Second operand 8 states and 212 transitions. [2024-06-28 03:35:43,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 356 transitions, 4617 flow [2024-06-28 03:35:44,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 356 transitions, 4365 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 03:35:44,433 INFO L231 Difference]: Finished difference. Result has 169 places, 307 transitions, 3843 flow [2024-06-28 03:35:44,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3338, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3843, PETRI_PLACES=169, PETRI_TRANSITIONS=307} [2024-06-28 03:35:44,433 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 115 predicate places. [2024-06-28 03:35:44,433 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 307 transitions, 3843 flow [2024-06-28 03:35:44,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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) [2024-06-28 03:35:44,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:44,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:44,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:35:44,434 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:44,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:44,434 INFO L85 PathProgramCache]: Analyzing trace with hash 526299578, now seen corresponding path program 4 times [2024-06-28 03:35:44,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:44,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661879789] [2024-06-28 03:35:44,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:44,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:45,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:45,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661879789] [2024-06-28 03:35:45,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661879789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:45,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:45,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:45,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294490677] [2024-06-28 03:35:45,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:45,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:45,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:45,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:45,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:45,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:45,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 307 transitions, 3843 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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) [2024-06-28 03:35:45,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:45,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:45,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:48,796 INFO L124 PetriNetUnfolderBase]: 11873/16879 cut-off events. [2024-06-28 03:35:48,797 INFO L125 PetriNetUnfolderBase]: For 754884/754895 co-relation queries the response was YES. [2024-06-28 03:35:48,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121969 conditions, 16879 events. 11873/16879 cut-off events. For 754884/754895 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 98110 event pairs, 3654 based on Foata normal form. 84/16955 useless extension candidates. Maximal degree in co-relation 121897. Up to 14714 conditions per place. [2024-06-28 03:35:48,947 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 201 selfloop transitions, 147 changer transitions 0/355 dead transitions. [2024-06-28 03:35:48,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 355 transitions, 4852 flow [2024-06-28 03:35:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:48,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:48,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 03:35:48,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5049019607843137 [2024-06-28 03:35:48,949 INFO L175 Difference]: Start difference. First operand has 169 places, 307 transitions, 3843 flow. Second operand 8 states and 206 transitions. [2024-06-28 03:35:48,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 355 transitions, 4852 flow [2024-06-28 03:35:50,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 355 transitions, 4480 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:50,278 INFO L231 Difference]: Finished difference. Result has 171 places, 313 transitions, 3954 flow [2024-06-28 03:35:50,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3471, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3954, PETRI_PLACES=171, PETRI_TRANSITIONS=313} [2024-06-28 03:35:50,279 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 117 predicate places. [2024-06-28 03:35:50,279 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 313 transitions, 3954 flow [2024-06-28 03:35:50,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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) [2024-06-28 03:35:50,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:50,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:50,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:35:50,280 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:50,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:50,281 INFO L85 PathProgramCache]: Analyzing trace with hash -545219082, now seen corresponding path program 1 times [2024-06-28 03:35:50,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:50,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321978483] [2024-06-28 03:35:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:50,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:51,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:51,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321978483] [2024-06-28 03:35:51,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321978483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:51,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:51,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:51,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599297061] [2024-06-28 03:35:51,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:51,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:51,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:51,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:51,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:51,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:51,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 313 transitions, 3954 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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) [2024-06-28 03:35:51,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:51,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:51,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:54,495 INFO L124 PetriNetUnfolderBase]: 11937/16960 cut-off events. [2024-06-28 03:35:54,496 INFO L125 PetriNetUnfolderBase]: For 737254/737259 co-relation queries the response was YES. [2024-06-28 03:35:54,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122700 conditions, 16960 events. 11937/16960 cut-off events. For 737254/737259 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 98710 event pairs, 3894 based on Foata normal form. 8/16961 useless extension candidates. Maximal degree in co-relation 122627. Up to 15974 conditions per place. [2024-06-28 03:35:54,805 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 291 selfloop transitions, 61 changer transitions 0/359 dead transitions. [2024-06-28 03:35:54,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 359 transitions, 4876 flow [2024-06-28 03:35:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:54,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:54,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 03:35:54,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024509803921569 [2024-06-28 03:35:54,807 INFO L175 Difference]: Start difference. First operand has 171 places, 313 transitions, 3954 flow. Second operand 8 states and 205 transitions. [2024-06-28 03:35:54,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 359 transitions, 4876 flow [2024-06-28 03:35:56,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 359 transitions, 4526 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:56,143 INFO L231 Difference]: Finished difference. Result has 173 places, 318 transitions, 3826 flow [2024-06-28 03:35:56,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3604, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3826, PETRI_PLACES=173, PETRI_TRANSITIONS=318} [2024-06-28 03:35:56,144 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 119 predicate places. [2024-06-28 03:35:56,144 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 318 transitions, 3826 flow [2024-06-28 03:35:56,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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) [2024-06-28 03:35:56,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:56,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:56,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:35:56,145 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:56,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:56,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1079107904, now seen corresponding path program 2 times [2024-06-28 03:35:56,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:56,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713339921] [2024-06-28 03:35:56,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:56,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:57,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:57,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713339921] [2024-06-28 03:35:57,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713339921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:57,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:57,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:57,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142222001] [2024-06-28 03:35:57,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:57,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:57,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:57,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:57,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 318 transitions, 3826 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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) [2024-06-28 03:35:57,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:57,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:57,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:00,483 INFO L124 PetriNetUnfolderBase]: 12093/17187 cut-off events. [2024-06-28 03:36:00,483 INFO L125 PetriNetUnfolderBase]: For 767008/767016 co-relation queries the response was YES. [2024-06-28 03:36:00,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125563 conditions, 17187 events. 12093/17187 cut-off events. For 767008/767016 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 100300 event pairs, 3640 based on Foata normal form. 8/17185 useless extension candidates. Maximal degree in co-relation 125489. Up to 14801 conditions per place. [2024-06-28 03:36:00,653 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 205 selfloop transitions, 167 changer transitions 0/379 dead transitions. [2024-06-28 03:36:00,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 379 transitions, 5292 flow [2024-06-28 03:36:00,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:00,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 03:36:00,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269607843137255 [2024-06-28 03:36:00,654 INFO L175 Difference]: Start difference. First operand has 173 places, 318 transitions, 3826 flow. Second operand 8 states and 215 transitions. [2024-06-28 03:36:00,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 379 transitions, 5292 flow [2024-06-28 03:36:02,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 379 transitions, 5052 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 03:36:02,121 INFO L231 Difference]: Finished difference. Result has 175 places, 332 transitions, 4237 flow [2024-06-28 03:36:02,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3586, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4237, PETRI_PLACES=175, PETRI_TRANSITIONS=332} [2024-06-28 03:36:02,122 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 121 predicate places. [2024-06-28 03:36:02,122 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 332 transitions, 4237 flow [2024-06-28 03:36:02,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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) [2024-06-28 03:36:02,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:02,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:02,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:36:02,123 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:02,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:02,123 INFO L85 PathProgramCache]: Analyzing trace with hash -538785342, now seen corresponding path program 3 times [2024-06-28 03:36:02,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:02,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946156157] [2024-06-28 03:36:02,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:02,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:03,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:03,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:03,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946156157] [2024-06-28 03:36:03,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946156157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:03,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:03,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:03,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058446767] [2024-06-28 03:36:03,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:03,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:03,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:03,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:03,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:03,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:03,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 332 transitions, 4237 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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) [2024-06-28 03:36:03,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:03,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:03,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:06,385 INFO L124 PetriNetUnfolderBase]: 12249/17444 cut-off events. [2024-06-28 03:36:06,385 INFO L125 PetriNetUnfolderBase]: For 833194/833202 co-relation queries the response was YES. [2024-06-28 03:36:06,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132385 conditions, 17444 events. 12249/17444 cut-off events. For 833194/833202 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 102423 event pairs, 3673 based on Foata normal form. 8/17442 useless extension candidates. Maximal degree in co-relation 132309. Up to 14917 conditions per place. [2024-06-28 03:36:06,574 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 211 selfloop transitions, 167 changer transitions 0/385 dead transitions. [2024-06-28 03:36:06,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 385 transitions, 5668 flow [2024-06-28 03:36:06,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:06,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:06,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-28 03:36:06,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171568627450981 [2024-06-28 03:36:06,575 INFO L175 Difference]: Start difference. First operand has 175 places, 332 transitions, 4237 flow. Second operand 8 states and 211 transitions. [2024-06-28 03:36:06,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 385 transitions, 5668 flow [2024-06-28 03:36:08,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 385 transitions, 5486 flow, removed 66 selfloop flow, removed 3 redundant places. [2024-06-28 03:36:08,532 INFO L231 Difference]: Finished difference. Result has 180 places, 341 transitions, 4585 flow [2024-06-28 03:36:08,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4081, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4585, PETRI_PLACES=180, PETRI_TRANSITIONS=341} [2024-06-28 03:36:08,533 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 126 predicate places. [2024-06-28 03:36:08,533 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 341 transitions, 4585 flow [2024-06-28 03:36:08,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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) [2024-06-28 03:36:08,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:08,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:08,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:36:08,534 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:08,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:08,534 INFO L85 PathProgramCache]: Analyzing trace with hash -538539078, now seen corresponding path program 1 times [2024-06-28 03:36:08,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:08,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848528840] [2024-06-28 03:36:08,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:08,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:09,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:09,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:09,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848528840] [2024-06-28 03:36:09,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848528840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:09,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:09,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:09,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820146799] [2024-06-28 03:36:09,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:09,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:09,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:09,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:09,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:09,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:09,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 341 transitions, 4585 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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) [2024-06-28 03:36:09,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:09,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:09,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:13,180 INFO L124 PetriNetUnfolderBase]: 12276/17464 cut-off events. [2024-06-28 03:36:13,181 INFO L125 PetriNetUnfolderBase]: For 865462/865475 co-relation queries the response was YES. [2024-06-28 03:36:13,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134371 conditions, 17464 events. 12276/17464 cut-off events. For 865462/865475 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 102194 event pairs, 3800 based on Foata normal form. 14/17473 useless extension candidates. Maximal degree in co-relation 134293. Up to 16703 conditions per place. [2024-06-28 03:36:13,363 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 340 selfloop transitions, 41 changer transitions 0/388 dead transitions. [2024-06-28 03:36:13,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 388 transitions, 5635 flow [2024-06-28 03:36:13,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:13,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:13,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 03:36:13,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47549019607843135 [2024-06-28 03:36:13,365 INFO L175 Difference]: Start difference. First operand has 180 places, 341 transitions, 4585 flow. Second operand 8 states and 194 transitions. [2024-06-28 03:36:13,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 388 transitions, 5635 flow [2024-06-28 03:36:15,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 388 transitions, 5375 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 03:36:15,110 INFO L231 Difference]: Finished difference. Result has 185 places, 350 transitions, 4587 flow [2024-06-28 03:36:15,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4328, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4587, PETRI_PLACES=185, PETRI_TRANSITIONS=350} [2024-06-28 03:36:15,111 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 131 predicate places. [2024-06-28 03:36:15,111 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 350 transitions, 4587 flow [2024-06-28 03:36:15,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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) [2024-06-28 03:36:15,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:15,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:15,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:36:15,112 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:15,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:15,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2060716040, now seen corresponding path program 1 times [2024-06-28 03:36:15,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:15,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244720986] [2024-06-28 03:36:15,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:15,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:16,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:16,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244720986] [2024-06-28 03:36:16,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244720986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:16,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:16,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:36:16,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655126005] [2024-06-28 03:36:16,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:16,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:36:16,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:16,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:36:16,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:36:16,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:36:16,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 350 transitions, 4587 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 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) [2024-06-28 03:36:16,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:16,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:36:16,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand