./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix055_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix055_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 12:38:00,295 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:38:00,356 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:38:00,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:38:00,360 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:38:00,384 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:38:00,384 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:38:00,385 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:38:00,385 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:38:00,386 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:38:00,386 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:38:00,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:38:00,387 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:38:00,387 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:38:00,388 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:38:00,388 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:38:00,388 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:38:00,388 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:38:00,389 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:38:00,389 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:38:00,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:38:00,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:38:00,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:38:00,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:38:00,404 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:38:00,405 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:38:00,405 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:38:00,405 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:38:00,405 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:38:00,406 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:38:00,406 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:38:00,406 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:38:00,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:38:00,406 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:38:00,407 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:38:00,407 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:38:00,407 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:38:00,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:38:00,407 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:38:00,415 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:38:00,415 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:38:00,415 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:38:00,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:38:00,416 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:38:00,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:38:00,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:38:00,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:38:00,669 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:38:00,669 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:38:00,671 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i [2024-06-14 12:38:01,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:38:01,938 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:38:01,939 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i [2024-06-14 12:38:01,955 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/028331d19/d25b630ca98341d79df94aa75a80dec8/FLAG136ded459 [2024-06-14 12:38:01,970 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/028331d19/d25b630ca98341d79df94aa75a80dec8 [2024-06-14 12:38:02,007 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:38:02,008 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:38:02,009 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix055_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-14 12:38:02,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:38:02,209 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:38:02,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:38:02,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:38:02,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:38:02,214 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:38:01" (1/2) ... [2024-06-14 12:38:02,215 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b06f429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:38:02, skipping insertion in model container [2024-06-14 12:38:02,215 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:38:01" (1/2) ... [2024-06-14 12:38:02,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74667c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:38:02, skipping insertion in model container [2024-06-14 12:38:02,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:38:02" (2/2) ... [2024-06-14 12:38:02,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b06f429 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:38:02, skipping insertion in model container [2024-06-14 12:38:02,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:38:02" (2/2) ... [2024-06-14 12:38:02,217 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:38:02,302 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:38:02,304 INFO L97 edCorrectnessWitness]: Location invariant before [L862-L862] ((((((((((((((((((((! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0) [2024-06-14 12:38:02,304 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] ((((((((((((((((((((! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0) [2024-06-14 12:38:02,304 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] ((((((((((((((((((((! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0) [2024-06-14 12:38:02,304 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] ((((((((((((((((((((! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0) [2024-06-14 12:38:02,304 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:38:02,305 INFO L106 edCorrectnessWitness]: ghost_update [L860-L860] multithreaded = 1; [2024-06-14 12:38:02,351 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:38:02,651 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:38:02,659 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:38:02,775 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:38:02,802 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:38:02,803 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:38:02 WrapperNode [2024-06-14 12:38:02,804 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:38:02,805 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:38:02,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:38:02,805 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:38:02,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:38:02" (1/1) ... [2024-06-14 12:38:02,826 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:38:02" (1/1) ... [2024-06-14 12:38:02,850 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-14 12:38:02,851 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:38:02,851 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:38:02,851 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:38:02,851 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:38:02,860 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:38:02" (1/1) ... [2024-06-14 12:38:02,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:38:02" (1/1) ... [2024-06-14 12:38:02,863 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:38:02" (1/1) ... [2024-06-14 12:38:02,914 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]. [2024-06-14 12:38:02,917 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:38:02" (1/1) ... [2024-06-14 12:38:02,918 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:38:02" (1/1) ... [2024-06-14 12:38:02,946 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:38:02" (1/1) ... [2024-06-14 12:38:02,956 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:38:02" (1/1) ... [2024-06-14 12:38:02,958 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:38:02" (1/1) ... [2024-06-14 12:38:02,965 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:38:02" (1/1) ... [2024-06-14 12:38:02,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:38:02,973 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:38:02,973 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:38:02,973 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:38:02,974 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:38:02" (1/1) ... [2024-06-14 12:38:02,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:38:02,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:38:03,042 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) [2024-06-14 12:38:03,067 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 [2024-06-14 12:38:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:38:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:38:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:38:03,082 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:38:03,082 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:38:03,082 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:38:03,082 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-14 12:38:03,082 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-14 12:38:03,082 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-14 12:38:03,083 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-14 12:38:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:38:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:38:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:38:03,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:38:03,085 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 12:38:03,221 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:38:03,223 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:38:03,570 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:38:03,570 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:38:03,692 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:38:03,692 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:38:03,693 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:38:03 BoogieIcfgContainer [2024-06-14 12:38:03,693 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:38:03,694 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:38:03,695 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:38:03,697 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:38:03,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:38:01" (1/4) ... [2024-06-14 12:38:03,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631a55b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:38:03, skipping insertion in model container [2024-06-14 12:38:03,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:38:02" (2/4) ... [2024-06-14 12:38:03,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631a55b8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:38:03, skipping insertion in model container [2024-06-14 12:38:03,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:38:02" (3/4) ... [2024-06-14 12:38:03,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631a55b8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:38:03, skipping insertion in model container [2024-06-14 12:38:03,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:38:03" (4/4) ... [2024-06-14 12:38:03,700 INFO L112 eAbstractionObserver]: Analyzing ICFG mix055_power.oepc_pso.oepc_rmo.oepc.i [2024-06-14 12:38:03,715 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:38:03,715 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-14 12:38:03,715 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:38:03,786 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:38:03,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-14 12:38:03,835 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-14 12:38:03,835 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:38:03,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 12:38:03,837 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-14 12:38:03,840 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-14 12:38:03,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:38:03,852 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;@249d70e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:38:03,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-14 12:38:03,855 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:38:03,856 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 12:38:03,856 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:38:03,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:03,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:38:03,857 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)] === [2024-06-14 12:38:03,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:03,861 INFO L85 PathProgramCache]: Analyzing trace with hash -686363886, now seen corresponding path program 1 times [2024-06-14 12:38:03,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:03,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148489600] [2024-06-14 12:38:03,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:03,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:04,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:04,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148489600] [2024-06-14 12:38:04,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148489600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:04,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:04,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:38:04,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106462843] [2024-06-14 12:38:04,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:04,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:38:04,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:04,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:38:04,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:38:05,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-14 12:38:05,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-06-14 12:38:05,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:05,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-14 12:38:05,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:06,797 INFO L124 PetriNetUnfolderBase]: 11595/15742 cut-off events. [2024-06-14 12:38:06,798 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2024-06-14 12:38:06,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31880 conditions, 15742 events. 11595/15742 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 81893 event pairs, 9068 based on Foata normal form. 1/15528 useless extension candidates. Maximal degree in co-relation 31864. Up to 15685 conditions per place. [2024-06-14 12:38:06,905 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 46 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-14 12:38:06,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 235 flow [2024-06-14 12:38:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:38:06,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:38:06,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-06-14 12:38:06,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-14 12:38:06,919 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 91 transitions. [2024-06-14 12:38:06,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 235 flow [2024-06-14 12:38:06,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-14 12:38:06,928 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-14 12:38:06,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-14 12:38:06,934 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-14 12:38:06,934 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-14 12:38:06,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-06-14 12:38:06,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:06,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:06,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:38:06,936 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)] === [2024-06-14 12:38:06,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:06,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1829322609, now seen corresponding path program 1 times [2024-06-14 12:38:06,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:06,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232896024] [2024-06-14 12:38:06,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:06,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:07,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:07,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232896024] [2024-06-14 12:38:07,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232896024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:07,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:07,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:38:07,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64614052] [2024-06-14 12:38:07,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:07,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:38:07,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:07,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:38:07,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:38:07,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-14 12:38:07,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 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) [2024-06-14 12:38:07,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:07,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-14 12:38:07,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:09,344 INFO L124 PetriNetUnfolderBase]: 11585/15736 cut-off events. [2024-06-14 12:38:09,345 INFO L125 PetriNetUnfolderBase]: For 2898/2898 co-relation queries the response was YES. [2024-06-14 12:38:09,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35857 conditions, 15736 events. 11585/15736 cut-off events. For 2898/2898 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 81889 event pairs, 8249 based on Foata normal form. 4/15738 useless extension candidates. Maximal degree in co-relation 35842. Up to 15650 conditions per place. [2024-06-14 12:38:09,426 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 56 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-14 12:38:09,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 327 flow [2024-06-14 12:38:09,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:38:09,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:38:09,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-06-14 12:38:09,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-14 12:38:09,430 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 117 transitions. [2024-06-14 12:38:09,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 327 flow [2024-06-14 12:38:09,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:38:09,434 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-14 12:38:09,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-14 12:38:09,435 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-14 12:38:09,436 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-14 12:38:09,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 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) [2024-06-14 12:38:09,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:09,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:09,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:38:09,439 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)] === [2024-06-14 12:38:09,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:09,444 INFO L85 PathProgramCache]: Analyzing trace with hash 874427763, now seen corresponding path program 1 times [2024-06-14 12:38:09,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:09,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021657839] [2024-06-14 12:38:09,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:09,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:10,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:10,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021657839] [2024-06-14 12:38:10,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021657839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:10,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:10,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 12:38:10,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10369487] [2024-06-14 12:38:10,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:10,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 12:38:10,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:10,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 12:38:10,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 12:38:10,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-14 12:38:10,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-06-14 12:38:10,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:10,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-14 12:38:10,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:11,873 INFO L124 PetriNetUnfolderBase]: 11693/15879 cut-off events. [2024-06-14 12:38:11,873 INFO L125 PetriNetUnfolderBase]: For 8562/8562 co-relation queries the response was YES. [2024-06-14 12:38:11,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40232 conditions, 15879 events. 11693/15879 cut-off events. For 8562/8562 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 82804 event pairs, 6700 based on Foata normal form. 10/15886 useless extension candidates. Maximal degree in co-relation 40215. Up to 15623 conditions per place. [2024-06-14 12:38:11,972 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 76 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2024-06-14 12:38:11,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 102 transitions, 551 flow [2024-06-14 12:38:11,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:38:11,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:38:11,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-14 12:38:11,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-06-14 12:38:11,977 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 5 states and 155 transitions. [2024-06-14 12:38:11,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 102 transitions, 551 flow [2024-06-14 12:38:11,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 102 transitions, 532 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 12:38:11,984 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 312 flow [2024-06-14 12:38:11,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-06-14 12:38:11,985 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-14 12:38:11,985 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 312 flow [2024-06-14 12:38:11,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-06-14 12:38:11,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:11,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:11,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:38:11,986 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)] === [2024-06-14 12:38:11,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:11,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1337458640, now seen corresponding path program 1 times [2024-06-14 12:38:11,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:11,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816531407] [2024-06-14 12:38:11,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:11,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:12,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:12,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816531407] [2024-06-14 12:38:12,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816531407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:12,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:12,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:38:12,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285507805] [2024-06-14 12:38:12,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:12,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:38:12,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:12,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:38:12,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:38:12,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-14 12:38:12,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:12,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:12,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-14 12:38:12,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:14,589 INFO L124 PetriNetUnfolderBase]: 11739/15945 cut-off events. [2024-06-14 12:38:14,589 INFO L125 PetriNetUnfolderBase]: For 20683/20685 co-relation queries the response was YES. [2024-06-14 12:38:14,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47694 conditions, 15945 events. 11739/15945 cut-off events. For 20683/20685 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 82859 event pairs, 5599 based on Foata normal form. 10/15952 useless extension candidates. Maximal degree in co-relation 47674. Up to 15545 conditions per place. [2024-06-14 12:38:14,678 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 91 selfloop transitions, 37 changer transitions 0/133 dead transitions. [2024-06-14 12:38:14,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 133 transitions, 862 flow [2024-06-14 12:38:14,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:38:14,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:38:14,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-06-14 12:38:14,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5993589743589743 [2024-06-14 12:38:14,681 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 312 flow. Second operand 6 states and 187 transitions. [2024-06-14 12:38:14,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 133 transitions, 862 flow [2024-06-14 12:38:14,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 133 transitions, 850 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-14 12:38:14,693 INFO L231 Difference]: Finished difference. Result has 71 places, 81 transitions, 550 flow [2024-06-14 12:38:14,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=550, PETRI_PLACES=71, PETRI_TRANSITIONS=81} [2024-06-14 12:38:14,694 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2024-06-14 12:38:14,695 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 81 transitions, 550 flow [2024-06-14 12:38:14,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:14,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:14,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:14,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:38:14,695 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:38:14,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:14,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1488453326, now seen corresponding path program 1 times [2024-06-14 12:38:14,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:14,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153722296] [2024-06-14 12:38:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:14,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:15,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:15,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:15,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153722296] [2024-06-14 12:38:15,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153722296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:15,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:15,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:38:15,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719547026] [2024-06-14 12:38:15,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:15,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:38:15,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:15,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:38:15,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:38:15,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-14 12:38:15,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 81 transitions, 550 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:15,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:15,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-14 12:38:15,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:17,470 INFO L124 PetriNetUnfolderBase]: 11926/16234 cut-off events. [2024-06-14 12:38:17,470 INFO L125 PetriNetUnfolderBase]: For 39112/39117 co-relation queries the response was YES. [2024-06-14 12:38:17,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56041 conditions, 16234 events. 11926/16234 cut-off events. For 39112/39117 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 85257 event pairs, 4656 based on Foata normal form. 40/16271 useless extension candidates. Maximal degree in co-relation 56015. Up to 15546 conditions per place. [2024-06-14 12:38:17,588 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 102 selfloop transitions, 40 changer transitions 0/147 dead transitions. [2024-06-14 12:38:17,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 147 transitions, 1096 flow [2024-06-14 12:38:17,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:38:17,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:38:17,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-06-14 12:38:17,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851648351648352 [2024-06-14 12:38:17,590 INFO L175 Difference]: Start difference. First operand has 71 places, 81 transitions, 550 flow. Second operand 7 states and 213 transitions. [2024-06-14 12:38:17,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 147 transitions, 1096 flow [2024-06-14 12:38:17,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 147 transitions, 1074 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-06-14 12:38:17,624 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 645 flow [2024-06-14 12:38:17,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=645, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2024-06-14 12:38:17,627 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 22 predicate places. [2024-06-14 12:38:17,628 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 645 flow [2024-06-14 12:38:17,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:17,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:17,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:17,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:38:17,628 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)] === [2024-06-14 12:38:17,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:17,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1655005422, now seen corresponding path program 1 times [2024-06-14 12:38:17,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:17,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690443425] [2024-06-14 12:38:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:17,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:18,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:18,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:18,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690443425] [2024-06-14 12:38:18,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690443425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:18,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:18,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:38:18,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213350400] [2024-06-14 12:38:18,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:18,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:38:18,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:18,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:38:18,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:38:18,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-14 12:38:18,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 645 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2024-06-14 12:38:18,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:18,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-14 12:38:18,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:20,128 INFO L124 PetriNetUnfolderBase]: 11908/16213 cut-off events. [2024-06-14 12:38:20,128 INFO L125 PetriNetUnfolderBase]: For 49395/49395 co-relation queries the response was YES. [2024-06-14 12:38:20,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58901 conditions, 16213 events. 11908/16213 cut-off events. For 49395/49395 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 85047 event pairs, 5782 based on Foata normal form. 6/16217 useless extension candidates. Maximal degree in co-relation 58872. Up to 16118 conditions per place. [2024-06-14 12:38:20,226 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 82 selfloop transitions, 13 changer transitions 0/100 dead transitions. [2024-06-14 12:38:20,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 100 transitions, 879 flow [2024-06-14 12:38:20,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:38:20,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:38:20,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-14 12:38:20,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-14 12:38:20,227 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 645 flow. Second operand 5 states and 120 transitions. [2024-06-14 12:38:20,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 100 transitions, 879 flow [2024-06-14 12:38:20,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 100 transitions, 782 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-14 12:38:20,245 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 588 flow [2024-06-14 12:38:20,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=588, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2024-06-14 12:38:20,246 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 22 predicate places. [2024-06-14 12:38:20,246 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 588 flow [2024-06-14 12:38:20,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2024-06-14 12:38:20,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:20,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:20,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:38:20,247 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)] === [2024-06-14 12:38:20,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:20,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1293528943, now seen corresponding path program 1 times [2024-06-14 12:38:20,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:20,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749291371] [2024-06-14 12:38:20,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:20,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:20,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:20,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:20,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749291371] [2024-06-14 12:38:20,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749291371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:20,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:20,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:38:20,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715781709] [2024-06-14 12:38:20,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:20,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:38:20,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:20,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:38:20,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:38:21,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-14 12:38:21,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 588 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:21,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:21,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-14 12:38:21,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:22,625 INFO L124 PetriNetUnfolderBase]: 11934/16244 cut-off events. [2024-06-14 12:38:22,625 INFO L125 PetriNetUnfolderBase]: For 55676/55676 co-relation queries the response was YES. [2024-06-14 12:38:22,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59667 conditions, 16244 events. 11934/16244 cut-off events. For 55676/55676 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 85116 event pairs, 5477 based on Foata normal form. 12/16253 useless extension candidates. Maximal degree in co-relation 59636. Up to 15965 conditions per place. [2024-06-14 12:38:22,790 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 89 selfloop transitions, 25 changer transitions 0/119 dead transitions. [2024-06-14 12:38:22,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 119 transitions, 980 flow [2024-06-14 12:38:22,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:38:22,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:38:22,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-14 12:38:22,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49038461538461536 [2024-06-14 12:38:22,795 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 588 flow. Second operand 6 states and 153 transitions. [2024-06-14 12:38:22,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 119 transitions, 980 flow [2024-06-14 12:38:22,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 119 transitions, 939 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 12:38:22,817 INFO L231 Difference]: Finished difference. Result has 79 places, 87 transitions, 656 flow [2024-06-14 12:38:22,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=656, PETRI_PLACES=79, PETRI_TRANSITIONS=87} [2024-06-14 12:38:22,818 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2024-06-14 12:38:22,819 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 87 transitions, 656 flow [2024-06-14 12:38:22,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:22,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:22,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:22,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:38:22,819 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)] === [2024-06-14 12:38:22,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:22,820 INFO L85 PathProgramCache]: Analyzing trace with hash 320257503, now seen corresponding path program 2 times [2024-06-14 12:38:22,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:22,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942976113] [2024-06-14 12:38:22,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:22,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:23,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:23,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942976113] [2024-06-14 12:38:23,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942976113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:23,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:23,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:38:23,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744054270] [2024-06-14 12:38:23,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:23,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:38:23,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:23,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:38:23,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:38:23,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-14 12:38:23,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 87 transitions, 656 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:23,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:23,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-14 12:38:23,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:25,244 INFO L124 PetriNetUnfolderBase]: 11889/16183 cut-off events. [2024-06-14 12:38:25,246 INFO L125 PetriNetUnfolderBase]: For 63596/63596 co-relation queries the response was YES. [2024-06-14 12:38:25,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60802 conditions, 16183 events. 11889/16183 cut-off events. For 63596/63596 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 84778 event pairs, 5746 based on Foata normal form. 6/16187 useless extension candidates. Maximal degree in co-relation 60771. Up to 16073 conditions per place. [2024-06-14 12:38:25,356 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 93 selfloop transitions, 14 changer transitions 0/112 dead transitions. [2024-06-14 12:38:25,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 112 transitions, 936 flow [2024-06-14 12:38:25,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:38:25,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:38:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-14 12:38:25,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-14 12:38:25,359 INFO L175 Difference]: Start difference. First operand has 79 places, 87 transitions, 656 flow. Second operand 6 states and 142 transitions. [2024-06-14 12:38:25,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 112 transitions, 936 flow [2024-06-14 12:38:25,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 112 transitions, 893 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-14 12:38:25,387 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 652 flow [2024-06-14 12:38:25,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=652, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-06-14 12:38:25,388 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2024-06-14 12:38:25,388 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 652 flow [2024-06-14 12:38:25,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:25,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:25,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:25,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:38:25,389 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:38:25,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:25,390 INFO L85 PathProgramCache]: Analyzing trace with hash 596061101, now seen corresponding path program 1 times [2024-06-14 12:38:25,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:25,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281931026] [2024-06-14 12:38:25,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:25,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:26,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:26,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:26,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281931026] [2024-06-14 12:38:26,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281931026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:26,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:26,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:38:26,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975639886] [2024-06-14 12:38:26,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:26,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:38:26,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:26,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:38:26,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:38:26,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-14 12:38:26,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 652 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-06-14 12:38:26,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:26,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-14 12:38:26,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:29,109 INFO L124 PetriNetUnfolderBase]: 14429/19516 cut-off events. [2024-06-14 12:38:29,109 INFO L125 PetriNetUnfolderBase]: For 86866/86866 co-relation queries the response was YES. [2024-06-14 12:38:29,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73219 conditions, 19516 events. 14429/19516 cut-off events. For 86866/86866 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 101328 event pairs, 7020 based on Foata normal form. 6/19520 useless extension candidates. Maximal degree in co-relation 73187. Up to 19424 conditions per place. [2024-06-14 12:38:29,254 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 102 selfloop transitions, 20 changer transitions 0/126 dead transitions. [2024-06-14 12:38:29,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 126 transitions, 1049 flow [2024-06-14 12:38:29,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:38:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:38:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-14 12:38:29,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340659340659341 [2024-06-14 12:38:29,259 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 652 flow. Second operand 7 states and 158 transitions. [2024-06-14 12:38:29,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 126 transitions, 1049 flow [2024-06-14 12:38:29,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 126 transitions, 979 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 12:38:29,307 INFO L231 Difference]: Finished difference. Result has 84 places, 94 transitions, 716 flow [2024-06-14 12:38:29,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=716, PETRI_PLACES=84, PETRI_TRANSITIONS=94} [2024-06-14 12:38:29,308 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 29 predicate places. [2024-06-14 12:38:29,308 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 94 transitions, 716 flow [2024-06-14 12:38:29,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-06-14 12:38:29,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:29,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:29,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:38:29,309 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:38:29,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:29,309 INFO L85 PathProgramCache]: Analyzing trace with hash 131615633, now seen corresponding path program 1 times [2024-06-14 12:38:29,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:29,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249322788] [2024-06-14 12:38:29,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:29,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:29,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:29,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249322788] [2024-06-14 12:38:29,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249322788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:29,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:29,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:38:29,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49713668] [2024-06-14 12:38:29,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:29,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:38:29,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:29,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:38:29,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:38:29,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-14 12:38:29,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 94 transitions, 716 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-06-14 12:38:29,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:29,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-14 12:38:29,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:31,816 INFO L124 PetriNetUnfolderBase]: 14422/19507 cut-off events. [2024-06-14 12:38:31,816 INFO L125 PetriNetUnfolderBase]: For 102806/102806 co-relation queries the response was YES. [2024-06-14 12:38:31,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77444 conditions, 19507 events. 14422/19507 cut-off events. For 102806/102806 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 100164 event pairs, 7127 based on Foata normal form. 2/19507 useless extension candidates. Maximal degree in co-relation 77411. Up to 19481 conditions per place. [2024-06-14 12:38:31,953 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 98 selfloop transitions, 10 changer transitions 0/112 dead transitions. [2024-06-14 12:38:31,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 112 transitions, 1006 flow [2024-06-14 12:38:31,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:38:31,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:38:31,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-14 12:38:31,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269230769230769 [2024-06-14 12:38:31,955 INFO L175 Difference]: Start difference. First operand has 84 places, 94 transitions, 716 flow. Second operand 5 states and 111 transitions. [2024-06-14 12:38:31,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 112 transitions, 1006 flow [2024-06-14 12:38:32,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 112 transitions, 946 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-14 12:38:32,010 INFO L231 Difference]: Finished difference. Result has 85 places, 98 transitions, 731 flow [2024-06-14 12:38:32,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=731, PETRI_PLACES=85, PETRI_TRANSITIONS=98} [2024-06-14 12:38:32,011 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 30 predicate places. [2024-06-14 12:38:32,011 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 98 transitions, 731 flow [2024-06-14 12:38:32,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-06-14 12:38:32,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:32,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:32,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:38:32,012 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)] === [2024-06-14 12:38:32,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:32,012 INFO L85 PathProgramCache]: Analyzing trace with hash 935222398, now seen corresponding path program 1 times [2024-06-14 12:38:32,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:32,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495120865] [2024-06-14 12:38:32,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:32,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:33,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:33,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:33,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495120865] [2024-06-14 12:38:33,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495120865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:33,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:33,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:38:33,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743641244] [2024-06-14 12:38:33,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:33,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:38:33,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:33,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:38:33,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:38:33,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-14 12:38:33,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 98 transitions, 731 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:33,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:33,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-14 12:38:33,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:35,146 INFO L124 PetriNetUnfolderBase]: 14175/19248 cut-off events. [2024-06-14 12:38:35,146 INFO L125 PetriNetUnfolderBase]: For 122408/122408 co-relation queries the response was YES. [2024-06-14 12:38:35,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80408 conditions, 19248 events. 14175/19248 cut-off events. For 122408/122408 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 101831 event pairs, 5829 based on Foata normal form. 6/19250 useless extension candidates. Maximal degree in co-relation 80374. Up to 18806 conditions per place. [2024-06-14 12:38:35,323 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 111 selfloop transitions, 37 changer transitions 0/154 dead transitions. [2024-06-14 12:38:35,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 154 transitions, 1221 flow [2024-06-14 12:38:35,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:38:35,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:38:35,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-14 12:38:35,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-14 12:38:35,325 INFO L175 Difference]: Start difference. First operand has 85 places, 98 transitions, 731 flow. Second operand 8 states and 200 transitions. [2024-06-14 12:38:35,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 154 transitions, 1221 flow [2024-06-14 12:38:35,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 154 transitions, 1176 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-14 12:38:35,390 INFO L231 Difference]: Finished difference. Result has 91 places, 106 transitions, 858 flow [2024-06-14 12:38:35,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=858, PETRI_PLACES=91, PETRI_TRANSITIONS=106} [2024-06-14 12:38:35,391 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 36 predicate places. [2024-06-14 12:38:35,391 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 106 transitions, 858 flow [2024-06-14 12:38:35,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:35,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:35,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:35,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:38:35,392 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:38:35,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:35,392 INFO L85 PathProgramCache]: Analyzing trace with hash -538067476, now seen corresponding path program 1 times [2024-06-14 12:38:35,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:35,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680701796] [2024-06-14 12:38:35,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:35,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:36,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:36,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680701796] [2024-06-14 12:38:36,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680701796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:36,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:36,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:38:36,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361845898] [2024-06-14 12:38:36,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:36,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:38:36,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:36,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:38:36,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:38:36,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-14 12:38:36,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 106 transitions, 858 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-06-14 12:38:36,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:36,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-14 12:38:36,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:38,661 INFO L124 PetriNetUnfolderBase]: 14452/19549 cut-off events. [2024-06-14 12:38:38,661 INFO L125 PetriNetUnfolderBase]: For 146640/146640 co-relation queries the response was YES. [2024-06-14 12:38:38,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86581 conditions, 19549 events. 14452/19549 cut-off events. For 146640/146640 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 100447 event pairs, 6936 based on Foata normal form. 3/19550 useless extension candidates. Maximal degree in co-relation 86545. Up to 19442 conditions per place. [2024-06-14 12:38:38,783 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 113 selfloop transitions, 25 changer transitions 0/142 dead transitions. [2024-06-14 12:38:38,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 142 transitions, 1262 flow [2024-06-14 12:38:38,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:38:38,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:38:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-14 12:38:38,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368131868131868 [2024-06-14 12:38:38,784 INFO L175 Difference]: Start difference. First operand has 91 places, 106 transitions, 858 flow. Second operand 7 states and 159 transitions. [2024-06-14 12:38:38,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 142 transitions, 1262 flow [2024-06-14 12:38:38,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 142 transitions, 1158 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-14 12:38:38,850 INFO L231 Difference]: Finished difference. Result has 93 places, 110 transitions, 872 flow [2024-06-14 12:38:38,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=872, PETRI_PLACES=93, PETRI_TRANSITIONS=110} [2024-06-14 12:38:38,850 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 38 predicate places. [2024-06-14 12:38:38,850 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 110 transitions, 872 flow [2024-06-14 12:38:38,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-06-14 12:38:38,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:38,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:38,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:38:38,851 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:38:38,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:38,851 INFO L85 PathProgramCache]: Analyzing trace with hash -248842399, now seen corresponding path program 1 times [2024-06-14 12:38:38,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:38,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252693567] [2024-06-14 12:38:38,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:38,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:39,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:39,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252693567] [2024-06-14 12:38:39,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252693567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:39,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:39,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:38:39,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406156948] [2024-06-14 12:38:39,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:39,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:38:39,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:39,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:38:39,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:38:39,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-14 12:38:39,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 110 transitions, 872 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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) [2024-06-14 12:38:39,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:39,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-14 12:38:39,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:41,753 INFO L124 PetriNetUnfolderBase]: 14498/19609 cut-off events. [2024-06-14 12:38:41,753 INFO L125 PetriNetUnfolderBase]: For 162874/162874 co-relation queries the response was YES. [2024-06-14 12:38:41,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87992 conditions, 19609 events. 14498/19609 cut-off events. For 162874/162874 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 100277 event pairs, 6898 based on Foata normal form. 10/19617 useless extension candidates. Maximal degree in co-relation 87955. Up to 19455 conditions per place. [2024-06-14 12:38:41,948 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 126 selfloop transitions, 22 changer transitions 0/152 dead transitions. [2024-06-14 12:38:41,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 152 transitions, 1408 flow [2024-06-14 12:38:41,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:38:41,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:38:41,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-14 12:38:41,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-14 12:38:41,950 INFO L175 Difference]: Start difference. First operand has 93 places, 110 transitions, 872 flow. Second operand 6 states and 143 transitions. [2024-06-14 12:38:41,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 152 transitions, 1408 flow [2024-06-14 12:38:42,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 152 transitions, 1337 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 12:38:42,047 INFO L231 Difference]: Finished difference. Result has 95 places, 124 transitions, 1015 flow [2024-06-14 12:38:42,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1015, PETRI_PLACES=95, PETRI_TRANSITIONS=124} [2024-06-14 12:38:42,048 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 40 predicate places. [2024-06-14 12:38:42,048 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 124 transitions, 1015 flow [2024-06-14 12:38:42,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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) [2024-06-14 12:38:42,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:42,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:42,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:38:42,048 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)] === [2024-06-14 12:38:42,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:42,049 INFO L85 PathProgramCache]: Analyzing trace with hash 978231510, now seen corresponding path program 1 times [2024-06-14 12:38:42,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:42,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695832758] [2024-06-14 12:38:42,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:42,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:43,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:43,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695832758] [2024-06-14 12:38:43,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695832758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:43,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:43,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:38:43,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123115201] [2024-06-14 12:38:43,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:43,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:38:43,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:43,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:38:43,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:38:43,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-14 12:38:43,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 124 transitions, 1015 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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) [2024-06-14 12:38:43,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:43,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-14 12:38:43,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:45,471 INFO L124 PetriNetUnfolderBase]: 14493/19725 cut-off events. [2024-06-14 12:38:45,472 INFO L125 PetriNetUnfolderBase]: For 201975/201981 co-relation queries the response was YES. [2024-06-14 12:38:45,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95380 conditions, 19725 events. 14493/19725 cut-off events. For 201975/201981 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 104809 event pairs, 4410 based on Foata normal form. 28/19741 useless extension candidates. Maximal degree in co-relation 95340. Up to 18435 conditions per place. [2024-06-14 12:38:45,652 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 126 selfloop transitions, 57 changer transitions 0/189 dead transitions. [2024-06-14 12:38:45,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 189 transitions, 1777 flow [2024-06-14 12:38:45,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:38:45,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:38:45,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-14 12:38:45,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048076923076923 [2024-06-14 12:38:45,654 INFO L175 Difference]: Start difference. First operand has 95 places, 124 transitions, 1015 flow. Second operand 8 states and 210 transitions. [2024-06-14 12:38:45,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 189 transitions, 1777 flow [2024-06-14 12:38:45,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 189 transitions, 1733 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-06-14 12:38:45,798 INFO L231 Difference]: Finished difference. Result has 102 places, 128 transitions, 1174 flow [2024-06-14 12:38:45,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1174, PETRI_PLACES=102, PETRI_TRANSITIONS=128} [2024-06-14 12:38:45,799 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 47 predicate places. [2024-06-14 12:38:45,799 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 128 transitions, 1174 flow [2024-06-14 12:38:45,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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) [2024-06-14 12:38:45,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:45,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:45,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:38:45,800 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)] === [2024-06-14 12:38:45,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:45,800 INFO L85 PathProgramCache]: Analyzing trace with hash 978234300, now seen corresponding path program 2 times [2024-06-14 12:38:45,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:45,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193760236] [2024-06-14 12:38:45,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:45,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:46,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:46,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:46,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193760236] [2024-06-14 12:38:46,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193760236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:46,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:46,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:38:46,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892262342] [2024-06-14 12:38:46,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:46,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:38:46,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:46,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:38:46,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:38:47,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-14 12:38:47,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 128 transitions, 1174 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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) [2024-06-14 12:38:47,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:47,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-14 12:38:47,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:49,346 INFO L124 PetriNetUnfolderBase]: 14588/19868 cut-off events. [2024-06-14 12:38:49,346 INFO L125 PetriNetUnfolderBase]: For 232329/232329 co-relation queries the response was YES. [2024-06-14 12:38:49,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98797 conditions, 19868 events. 14588/19868 cut-off events. For 232329/232329 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 105678 event pairs, 5610 based on Foata normal form. 60/19924 useless extension candidates. Maximal degree in co-relation 98754. Up to 19031 conditions per place. [2024-06-14 12:38:49,526 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 141 selfloop transitions, 45 changer transitions 0/192 dead transitions. [2024-06-14 12:38:49,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 192 transitions, 1770 flow [2024-06-14 12:38:49,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:49,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-14 12:38:49,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48504273504273504 [2024-06-14 12:38:49,528 INFO L175 Difference]: Start difference. First operand has 102 places, 128 transitions, 1174 flow. Second operand 9 states and 227 transitions. [2024-06-14 12:38:49,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 192 transitions, 1770 flow [2024-06-14 12:38:49,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 192 transitions, 1672 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-14 12:38:49,736 INFO L231 Difference]: Finished difference. Result has 107 places, 131 transitions, 1234 flow [2024-06-14 12:38:49,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1234, PETRI_PLACES=107, PETRI_TRANSITIONS=131} [2024-06-14 12:38:49,736 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 52 predicate places. [2024-06-14 12:38:49,736 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 131 transitions, 1234 flow [2024-06-14 12:38:49,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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) [2024-06-14 12:38:49,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:49,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:49,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:38:49,737 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)] === [2024-06-14 12:38:49,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:49,737 INFO L85 PathProgramCache]: Analyzing trace with hash 864380540, now seen corresponding path program 1 times [2024-06-14 12:38:49,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:49,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680422018] [2024-06-14 12:38:49,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:49,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:50,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:50,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680422018] [2024-06-14 12:38:50,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680422018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:50,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:50,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:38:50,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395109302] [2024-06-14 12:38:50,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:50,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:38:50,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:50,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:38:50,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:38:50,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-14 12:38:50,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 131 transitions, 1234 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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) [2024-06-14 12:38:50,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:50,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-14 12:38:50,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:52,939 INFO L124 PetriNetUnfolderBase]: 14889/20196 cut-off events. [2024-06-14 12:38:52,940 INFO L125 PetriNetUnfolderBase]: For 255416/255420 co-relation queries the response was YES. [2024-06-14 12:38:53,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103706 conditions, 20196 events. 14889/20196 cut-off events. For 255416/255420 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 104428 event pairs, 6714 based on Foata normal form. 6/20200 useless extension candidates. Maximal degree in co-relation 103661. Up to 20128 conditions per place. [2024-06-14 12:38:53,156 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 140 selfloop transitions, 21 changer transitions 0/165 dead transitions. [2024-06-14 12:38:53,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 165 transitions, 1790 flow [2024-06-14 12:38:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:38:53,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:38:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-14 12:38:53,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44551282051282054 [2024-06-14 12:38:53,158 INFO L175 Difference]: Start difference. First operand has 107 places, 131 transitions, 1234 flow. Second operand 6 states and 139 transitions. [2024-06-14 12:38:53,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 165 transitions, 1790 flow [2024-06-14 12:38:53,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 165 transitions, 1678 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 12:38:53,353 INFO L231 Difference]: Finished difference. Result has 106 places, 139 transitions, 1289 flow [2024-06-14 12:38:53,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1289, PETRI_PLACES=106, PETRI_TRANSITIONS=139} [2024-06-14 12:38:53,354 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 51 predicate places. [2024-06-14 12:38:53,354 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 139 transitions, 1289 flow [2024-06-14 12:38:53,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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) [2024-06-14 12:38:53,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:53,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:53,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:38:53,355 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:38:53,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:53,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1584092364, now seen corresponding path program 1 times [2024-06-14 12:38:53,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:53,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173662063] [2024-06-14 12:38:53,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:53,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:54,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:54,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173662063] [2024-06-14 12:38:54,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173662063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:54,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:54,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:54,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425721230] [2024-06-14 12:38:54,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:54,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:54,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:54,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:54,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:54,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-14 12:38:54,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 139 transitions, 1289 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 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) [2024-06-14 12:38:54,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:54,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-14 12:38:54,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:57,733 INFO L124 PetriNetUnfolderBase]: 14925/20247 cut-off events. [2024-06-14 12:38:57,734 INFO L125 PetriNetUnfolderBase]: For 287843/287843 co-relation queries the response was YES. [2024-06-14 12:38:57,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107339 conditions, 20247 events. 14925/20247 cut-off events. For 287843/287843 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 104817 event pairs, 6577 based on Foata normal form. 6/20251 useless extension candidates. Maximal degree in co-relation 107293. Up to 20117 conditions per place. [2024-06-14 12:38:57,919 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 154 selfloop transitions, 25 changer transitions 0/183 dead transitions. [2024-06-14 12:38:57,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 183 transitions, 1822 flow [2024-06-14 12:38:57,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:57,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:57,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-14 12:38:57,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405982905982906 [2024-06-14 12:38:57,921 INFO L175 Difference]: Start difference. First operand has 106 places, 139 transitions, 1289 flow. Second operand 9 states and 190 transitions. [2024-06-14 12:38:57,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 183 transitions, 1822 flow [2024-06-14 12:38:58,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 183 transitions, 1761 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-14 12:38:58,179 INFO L231 Difference]: Finished difference. Result has 114 places, 144 transitions, 1374 flow [2024-06-14 12:38:58,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1374, PETRI_PLACES=114, PETRI_TRANSITIONS=144} [2024-06-14 12:38:58,179 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2024-06-14 12:38:58,180 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 144 transitions, 1374 flow [2024-06-14 12:38:58,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 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) [2024-06-14 12:38:58,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:58,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:58,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:38:58,180 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:38:58,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:58,181 INFO L85 PathProgramCache]: Analyzing trace with hash -782477578, now seen corresponding path program 2 times [2024-06-14 12:38:58,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:58,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754293714] [2024-06-14 12:38:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:58,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:59,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:59,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754293714] [2024-06-14 12:38:59,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754293714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:59,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:59,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:59,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916207718] [2024-06-14 12:38:59,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:59,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:59,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:59,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:59,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:59,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-14 12:38:59,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 144 transitions, 1374 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 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) [2024-06-14 12:38:59,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:59,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-14 12:38:59,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:02,601 INFO L124 PetriNetUnfolderBase]: 14961/20299 cut-off events. [2024-06-14 12:39:02,601 INFO L125 PetriNetUnfolderBase]: For 323802/323802 co-relation queries the response was YES. [2024-06-14 12:39:02,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111177 conditions, 20299 events. 14961/20299 cut-off events. For 323802/323802 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 105057 event pairs, 6710 based on Foata normal form. 6/20303 useless extension candidates. Maximal degree in co-relation 111128. Up to 20154 conditions per place. [2024-06-14 12:39:02,866 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 153 selfloop transitions, 29 changer transitions 0/186 dead transitions. [2024-06-14 12:39:02,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 186 transitions, 1904 flow [2024-06-14 12:39:02,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:39:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:39:02,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-14 12:39:02,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326923076923077 [2024-06-14 12:39:02,868 INFO L175 Difference]: Start difference. First operand has 114 places, 144 transitions, 1374 flow. Second operand 8 states and 180 transitions. [2024-06-14 12:39:02,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 186 transitions, 1904 flow [2024-06-14 12:39:03,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 186 transitions, 1808 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-14 12:39:03,056 INFO L231 Difference]: Finished difference. Result has 116 places, 147 transitions, 1417 flow [2024-06-14 12:39:03,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1417, PETRI_PLACES=116, PETRI_TRANSITIONS=147} [2024-06-14 12:39:03,057 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 61 predicate places. [2024-06-14 12:39:03,057 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 147 transitions, 1417 flow [2024-06-14 12:39:03,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 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) [2024-06-14 12:39:03,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:03,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:03,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:39:03,058 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:39:03,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:03,058 INFO L85 PathProgramCache]: Analyzing trace with hash -788964328, now seen corresponding path program 3 times [2024-06-14 12:39:03,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:03,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161565632] [2024-06-14 12:39:03,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:03,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:04,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:04,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161565632] [2024-06-14 12:39:04,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161565632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:04,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:04,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:39:04,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938646744] [2024-06-14 12:39:04,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:04,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:39:04,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:04,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:39:04,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:39:04,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-14 12:39:04,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 147 transitions, 1417 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 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) [2024-06-14 12:39:04,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:04,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-14 12:39:04,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:06,986 INFO L124 PetriNetUnfolderBase]: 14946/20278 cut-off events. [2024-06-14 12:39:06,986 INFO L125 PetriNetUnfolderBase]: For 359378/359378 co-relation queries the response was YES. [2024-06-14 12:39:07,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114178 conditions, 20278 events. 14946/20278 cut-off events. For 359378/359378 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 105003 event pairs, 6707 based on Foata normal form. 6/20282 useless extension candidates. Maximal degree in co-relation 114128. Up to 20126 conditions per place. [2024-06-14 12:39:07,162 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 161 selfloop transitions, 29 changer transitions 0/194 dead transitions. [2024-06-14 12:39:07,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 194 transitions, 2011 flow [2024-06-14 12:39:07,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:39:07,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:39:07,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-14 12:39:07,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-14 12:39:07,166 INFO L175 Difference]: Start difference. First operand has 116 places, 147 transitions, 1417 flow. Second operand 8 states and 182 transitions. [2024-06-14 12:39:07,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 194 transitions, 2011 flow [2024-06-14 12:39:07,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 194 transitions, 1900 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-14 12:39:07,372 INFO L231 Difference]: Finished difference. Result has 119 places, 154 transitions, 1500 flow [2024-06-14 12:39:07,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1500, PETRI_PLACES=119, PETRI_TRANSITIONS=154} [2024-06-14 12:39:07,373 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 64 predicate places. [2024-06-14 12:39:07,373 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 154 transitions, 1500 flow [2024-06-14 12:39:07,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 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) [2024-06-14 12:39:07,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:07,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:07,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:39:07,373 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)] === [2024-06-14 12:39:07,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:07,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1583795446, now seen corresponding path program 1 times [2024-06-14 12:39:07,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:07,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780061511] [2024-06-14 12:39:07,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:07,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:08,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:08,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:08,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780061511] [2024-06-14 12:39:08,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780061511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:08,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:08,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:39:08,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976409374] [2024-06-14 12:39:08,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:08,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:39:08,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:08,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:39:08,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:39:08,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-14 12:39:08,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 154 transitions, 1500 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-06-14 12:39:08,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:08,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-14 12:39:08,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:11,539 INFO L124 PetriNetUnfolderBase]: 14901/20207 cut-off events. [2024-06-14 12:39:11,540 INFO L125 PetriNetUnfolderBase]: For 398711/398718 co-relation queries the response was YES. [2024-06-14 12:39:11,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117834 conditions, 20207 events. 14901/20207 cut-off events. For 398711/398718 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 104439 event pairs, 6158 based on Foata normal form. 7/20212 useless extension candidates. Maximal degree in co-relation 117782. Up to 19803 conditions per place. [2024-06-14 12:39:11,709 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 135 selfloop transitions, 48 changer transitions 0/187 dead transitions. [2024-06-14 12:39:11,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 187 transitions, 1966 flow [2024-06-14 12:39:11,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:39:11,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:39:11,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-14 12:39:11,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-14 12:39:11,711 INFO L175 Difference]: Start difference. First operand has 119 places, 154 transitions, 1500 flow. Second operand 6 states and 152 transitions. [2024-06-14 12:39:11,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 187 transitions, 1966 flow [2024-06-14 12:39:11,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 187 transitions, 1832 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-14 12:39:11,993 INFO L231 Difference]: Finished difference. Result has 120 places, 154 transitions, 1483 flow [2024-06-14 12:39:11,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1483, PETRI_PLACES=120, PETRI_TRANSITIONS=154} [2024-06-14 12:39:11,993 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-14 12:39:11,993 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 154 transitions, 1483 flow [2024-06-14 12:39:11,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-06-14 12:39:11,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:11,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:11,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:39:11,995 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)] === [2024-06-14 12:39:11,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:11,996 INFO L85 PathProgramCache]: Analyzing trace with hash 875808380, now seen corresponding path program 2 times [2024-06-14 12:39:11,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:11,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030472984] [2024-06-14 12:39:11,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:11,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:12,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:12,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030472984] [2024-06-14 12:39:12,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030472984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:12,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:12,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:39:12,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776689318] [2024-06-14 12:39:12,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:12,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:39:12,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:12,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:39:12,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:39:12,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-14 12:39:12,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 154 transitions, 1483 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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) [2024-06-14 12:39:12,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:12,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-14 12:39:12,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:15,607 INFO L124 PetriNetUnfolderBase]: 14894/20194 cut-off events. [2024-06-14 12:39:15,607 INFO L125 PetriNetUnfolderBase]: For 424091/424091 co-relation queries the response was YES. [2024-06-14 12:39:15,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119197 conditions, 20194 events. 14894/20194 cut-off events. For 424091/424091 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 104454 event pairs, 6701 based on Foata normal form. 2/20194 useless extension candidates. Maximal degree in co-relation 119144. Up to 20159 conditions per place.