./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix046.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/mix046.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/mix046.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix046.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-bcb38a6-m [2024-06-03 19:50:21,632 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 19:50:21,668 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 19:50:21,671 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 19:50:21,671 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 19:50:21,686 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 19:50:21,686 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 19:50:21,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 19:50:21,687 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 19:50:21,687 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 19:50:21,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 19:50:21,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 19:50:21,688 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 19:50:21,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 19:50:21,688 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 19:50:21,689 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 19:50:21,689 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 19:50:21,689 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 19:50:21,689 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 19:50:21,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 19:50:21,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 19:50:21,690 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 19:50:21,690 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 19:50:21,690 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 19:50:21,691 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 19:50:21,691 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 19:50:21,691 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 19:50:21,691 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 19:50:21,691 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 19:50:21,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 19:50:21,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 19:50:21,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 19:50:21,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:50:21,692 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 19:50:21,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 19:50:21,693 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 19:50:21,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 19:50:21,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 19:50:21,693 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 19:50:21,693 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 19:50:21,694 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 19:50:21,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 19:50:21,694 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 19:50:21,694 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 19:50:21,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 19:50:21,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 19:50:21,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 19:50:21,875 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 19:50:21,875 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 19:50:21,876 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix046.oepc.yml/witness.yml [2024-06-03 19:50:22,039 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 19:50:22,040 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 19:50:22,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix046.oepc.i [2024-06-03 19:50:23,116 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 19:50:23,321 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 19:50:23,340 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix046.oepc.i [2024-06-03 19:50:23,360 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/460cfa8df/23529b2a4c684772b99ee8b5c1a6ff7f/FLAG6ca36f3d2 [2024-06-03 19:50:23,370 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/460cfa8df/23529b2a4c684772b99ee8b5c1a6ff7f [2024-06-03 19:50:23,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 19:50:23,371 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 19:50:23,372 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 19:50:23,372 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 19:50:23,376 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 19:50:23,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:50:22" (1/2) ... [2024-06-03 19:50:23,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c337ab3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:50:23, skipping insertion in model container [2024-06-03 19:50:23,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:50:22" (1/2) ... [2024-06-03 19:50:23,384 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@34eef5d5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:50:23, skipping insertion in model container [2024-06-03 19:50:23,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:50:23" (2/2) ... [2024-06-03 19:50:23,384 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c337ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:23, skipping insertion in model container [2024-06-03 19:50:23,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:50:23" (2/2) ... [2024-06-03 19:50:23,385 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 19:50:23,471 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 19:50:23,473 INFO L97 edCorrectnessWitness]: Location invariant before [L877-L877] ((((((((((((((((((((((! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-03 19:50:23,473 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] ((((((((((((((((((((((! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-03 19:50:23,473 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ((((((((((((((((((((((! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-03 19:50:23,473 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ((((((((((((((((((((((! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-03 19:50:23,473 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 19:50:23,474 INFO L106 edCorrectnessWitness]: ghost_update [L870-L870] multithreaded = 1; [2024-06-03 19:50:23,510 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 19:50:23,809 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:50:23,828 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 19:50:23,930 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:50:23,975 INFO L206 MainTranslator]: Completed translation [2024-06-03 19:50:23,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:23 WrapperNode [2024-06-03 19:50:23,976 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 19:50:23,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 19:50:23,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 19:50:23,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 19:50:23,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:23" (1/1) ... [2024-06-03 19:50:24,011 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:23" (1/1) ... [2024-06-03 19:50:24,049 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-03 19:50:24,061 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 19:50:24,062 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 19:50:24,062 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 19:50:24,062 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 19:50:24,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:23" (1/1) ... [2024-06-03 19:50:24,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:23" (1/1) ... [2024-06-03 19:50:24,074 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:23" (1/1) ... [2024-06-03 19:50:24,093 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]. [2024-06-03 19:50:24,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:23" (1/1) ... [2024-06-03 19:50:24,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:23" (1/1) ... [2024-06-03 19:50:24,102 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:23" (1/1) ... [2024-06-03 19:50:24,112 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:23" (1/1) ... [2024-06-03 19:50:24,114 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:23" (1/1) ... [2024-06-03 19:50:24,129 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:23" (1/1) ... [2024-06-03 19:50:24,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 19:50:24,134 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 19:50:24,134 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 19:50:24,134 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 19:50:24,135 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:23" (1/1) ... [2024-06-03 19:50:24,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:50:24,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:50:24,176 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) [2024-06-03 19:50:24,195 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 [2024-06-03 19:50:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 19:50:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 19:50:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 19:50:24,213 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 19:50:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 19:50:24,214 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 19:50:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-03 19:50:24,214 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-03 19:50:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-03 19:50:24,214 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-03 19:50:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 19:50:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 19:50:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 19:50:24,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 19:50:24,217 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 19:50:24,342 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 19:50:24,343 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 19:50:24,664 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 19:50:24,664 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 19:50:24,812 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 19:50:24,813 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 19:50:24,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:50:24 BoogieIcfgContainer [2024-06-03 19:50:24,814 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 19:50:24,817 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 19:50:24,817 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 19:50:24,819 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 19:50:24,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:50:22" (1/4) ... [2024-06-03 19:50:24,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e53fe2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:50:24, skipping insertion in model container [2024-06-03 19:50:24,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 07:50:23" (2/4) ... [2024-06-03 19:50:24,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e53fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:50:24, skipping insertion in model container [2024-06-03 19:50:24,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:23" (3/4) ... [2024-06-03 19:50:24,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e53fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:50:24, skipping insertion in model container [2024-06-03 19:50:24,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:50:24" (4/4) ... [2024-06-03 19:50:24,821 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.oepc.i [2024-06-03 19:50:24,835 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 19:50:24,835 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-03 19:50:24,835 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 19:50:24,888 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 19:50:24,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 54 transitions, 124 flow [2024-06-03 19:50:24,952 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-06-03 19:50:24,952 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:50:24,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 0/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-03 19:50:24,955 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 54 transitions, 124 flow [2024-06-03 19:50:24,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 44 transitions, 100 flow [2024-06-03 19:50:24,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 19:50:24,971 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;@31677171, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 19:50:24,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-03 19:50:24,975 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 19:50:24,975 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-03 19:50:24,975 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:50:24,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:50:24,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 19:50:24,976 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)] === [2024-06-03 19:50:24,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:50:24,981 INFO L85 PathProgramCache]: Analyzing trace with hash -302346635, now seen corresponding path program 1 times [2024-06-03 19:50:24,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:50:24,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033012542] [2024-06-03 19:50:24,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:50:24,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:50:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:50:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:50:26,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:50:26,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033012542] [2024-06-03 19:50:26,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033012542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:50:26,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:50:26,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 19:50:26,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276574159] [2024-06-03 19:50:26,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:50:26,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:50:26,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:50:26,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:50:26,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:50:26,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-03 19:50:26,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-06-03 19:50:26,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:50:26,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-03 19:50:26,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:50:28,269 INFO L124 PetriNetUnfolderBase]: 13283/18237 cut-off events. [2024-06-03 19:50:28,269 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2024-06-03 19:50:28,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36597 conditions, 18237 events. 13283/18237 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 98786 event pairs, 10314 based on Foata normal form. 1/17813 useless extension candidates. Maximal degree in co-relation 36581. Up to 17909 conditions per place. [2024-06-03 19:50:28,371 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 47 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-03 19:50:28,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 241 flow [2024-06-03 19:50:28,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:50:28,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:50:28,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-03 19:50:28,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5864197530864198 [2024-06-03 19:50:28,383 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 95 transitions. [2024-06-03 19:50:28,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 241 flow [2024-06-03 19:50:28,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 234 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-03 19:50:28,391 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 135 flow [2024-06-03 19:50:28,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-03 19:50:28,395 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-06-03 19:50:28,395 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 135 flow [2024-06-03 19:50:28,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-06-03 19:50:28,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:50:28,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:50:28,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 19:50:28,396 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)] === [2024-06-03 19:50:28,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:50:28,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1502713620, now seen corresponding path program 1 times [2024-06-03 19:50:28,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:50:28,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102461973] [2024-06-03 19:50:28,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:50:28,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:50:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:50:29,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:50:29,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:50:29,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102461973] [2024-06-03 19:50:29,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102461973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:50:29,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:50:29,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:50:29,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489403820] [2024-06-03 19:50:29,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:50:29,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:50:29,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:50:29,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:50:29,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:50:29,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-03 19:50:29,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-06-03 19:50:29,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:50:29,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-03 19:50:29,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:50:31,144 INFO L124 PetriNetUnfolderBase]: 13273/18223 cut-off events. [2024-06-03 19:50:31,145 INFO L125 PetriNetUnfolderBase]: For 3276/3276 co-relation queries the response was YES. [2024-06-03 19:50:31,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41033 conditions, 18223 events. 13273/18223 cut-off events. For 3276/3276 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 98808 event pairs, 9230 based on Foata normal form. 4/18014 useless extension candidates. Maximal degree in co-relation 41018. Up to 17874 conditions per place. [2024-06-03 19:50:31,213 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 57 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-06-03 19:50:31,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 333 flow [2024-06-03 19:50:31,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:50:31,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:50:31,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-03 19:50:31,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5648148148148148 [2024-06-03 19:50:31,215 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 135 flow. Second operand 4 states and 122 transitions. [2024-06-03 19:50:31,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 333 flow [2024-06-03 19:50:31,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:50:31,217 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 183 flow [2024-06-03 19:50:31,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-06-03 19:50:31,218 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2024-06-03 19:50:31,218 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 183 flow [2024-06-03 19:50:31,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-06-03 19:50:31,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:50:31,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:50:31,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 19:50:31,219 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)] === [2024-06-03 19:50:31,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:50:31,219 INFO L85 PathProgramCache]: Analyzing trace with hash 998833075, now seen corresponding path program 1 times [2024-06-03 19:50:31,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:50:31,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630808737] [2024-06-03 19:50:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:50:31,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:50:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:50:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:50:32,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:50:32,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630808737] [2024-06-03 19:50:32,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630808737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:50:32,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:50:32,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:50:32,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703915211] [2024-06-03 19:50:32,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:50:32,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:50:32,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:50:32,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:50:32,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:50:32,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:50:32,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 183 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) [2024-06-03 19:50:32,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:50:32,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:50:32,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:50:34,523 INFO L124 PetriNetUnfolderBase]: 16097/22016 cut-off events. [2024-06-03 19:50:34,524 INFO L125 PetriNetUnfolderBase]: For 10815/10815 co-relation queries the response was YES. [2024-06-03 19:50:34,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54497 conditions, 22016 events. 16097/22016 cut-off events. For 10815/10815 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 118863 event pairs, 9531 based on Foata normal form. 4/21765 useless extension candidates. Maximal degree in co-relation 54480. Up to 21576 conditions per place. [2024-06-03 19:50:34,620 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 78 selfloop transitions, 17 changer transitions 0/100 dead transitions. [2024-06-03 19:50:34,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 100 transitions, 520 flow [2024-06-03 19:50:34,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:50:34,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:50:34,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-06-03 19:50:34,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-03 19:50:34,622 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 183 flow. Second operand 6 states and 171 transitions. [2024-06-03 19:50:34,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 100 transitions, 520 flow [2024-06-03 19:50:34,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 492 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-03 19:50:34,625 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 260 flow [2024-06-03 19:50:34,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-06-03 19:50:34,626 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2024-06-03 19:50:34,626 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 260 flow [2024-06-03 19:50:34,626 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) [2024-06-03 19:50:34,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:50:34,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:50:34,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 19:50:34,627 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)] === [2024-06-03 19:50:34,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:50:34,627 INFO L85 PathProgramCache]: Analyzing trace with hash 899056055, now seen corresponding path program 1 times [2024-06-03 19:50:34,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:50:34,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997944715] [2024-06-03 19:50:34,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:50:34,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:50:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:50:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:50:35,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:50:35,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997944715] [2024-06-03 19:50:35,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997944715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:50:35,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:50:35,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:50:35,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931684626] [2024-06-03 19:50:35,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:50:35,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:50:35,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:50:35,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:50:35,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:50:35,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:50:35,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 260 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) [2024-06-03 19:50:35,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:50:35,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:50:35,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:50:38,290 INFO L124 PetriNetUnfolderBase]: 16081/21992 cut-off events. [2024-06-03 19:50:38,290 INFO L125 PetriNetUnfolderBase]: For 21935/21935 co-relation queries the response was YES. [2024-06-03 19:50:38,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60429 conditions, 21992 events. 16081/21992 cut-off events. For 21935/21935 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 118698 event pairs, 8286 based on Foata normal form. 8/21745 useless extension candidates. Maximal degree in co-relation 60410. Up to 21510 conditions per place. [2024-06-03 19:50:38,409 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 85 selfloop transitions, 20 changer transitions 0/110 dead transitions. [2024-06-03 19:50:38,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 110 transitions, 610 flow [2024-06-03 19:50:38,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:50:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:50:38,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-03 19:50:38,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105820105820106 [2024-06-03 19:50:38,412 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 260 flow. Second operand 7 states and 193 transitions. [2024-06-03 19:50:38,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 110 transitions, 610 flow [2024-06-03 19:50:38,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 110 transitions, 571 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-03 19:50:38,418 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 293 flow [2024-06-03 19:50:38,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-06-03 19:50:38,419 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-06-03 19:50:38,419 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 293 flow [2024-06-03 19:50:38,419 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) [2024-06-03 19:50:38,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:50:38,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:50:38,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 19:50:38,420 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:50:38,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:50:38,420 INFO L85 PathProgramCache]: Analyzing trace with hash -249652142, now seen corresponding path program 1 times [2024-06-03 19:50:38,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:50:38,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029740775] [2024-06-03 19:50:38,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:50:38,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:50:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:50:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:50:39,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:50:39,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029740775] [2024-06-03 19:50:39,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029740775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:50:39,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:50:39,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:50:39,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304750953] [2024-06-03 19:50:39,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:50:39,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:50:39,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:50:39,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:50:39,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:50:39,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-03 19:50:39,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 293 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) [2024-06-03 19:50:39,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:50:39,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-03 19:50:39,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:50:41,139 INFO L124 PetriNetUnfolderBase]: 16072/21980 cut-off events. [2024-06-03 19:50:41,139 INFO L125 PetriNetUnfolderBase]: For 34236/34236 co-relation queries the response was YES. [2024-06-03 19:50:41,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64523 conditions, 21980 events. 16072/21980 cut-off events. For 34236/34236 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 118453 event pairs, 9029 based on Foata normal form. 3/21728 useless extension candidates. Maximal degree in co-relation 64503. Up to 21588 conditions per place. [2024-06-03 19:50:41,275 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 68 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2024-06-03 19:50:41,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 83 transitions, 519 flow [2024-06-03 19:50:41,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:50:41,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:50:41,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-03 19:50:41,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44814814814814813 [2024-06-03 19:50:41,281 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 293 flow. Second operand 5 states and 121 transitions. [2024-06-03 19:50:41,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 83 transitions, 519 flow [2024-06-03 19:50:41,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 465 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-03 19:50:41,290 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 304 flow [2024-06-03 19:50:41,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-06-03 19:50:41,297 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-06-03 19:50:41,297 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 304 flow [2024-06-03 19:50:41,297 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) [2024-06-03 19:50:41,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:50:41,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:50:41,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 19:50:41,298 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)] === [2024-06-03 19:50:41,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:50:41,298 INFO L85 PathProgramCache]: Analyzing trace with hash 850720236, now seen corresponding path program 1 times [2024-06-03 19:50:41,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:50:41,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499132171] [2024-06-03 19:50:41,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:50:41,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:50:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:50:42,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:50:42,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:50:42,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499132171] [2024-06-03 19:50:42,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499132171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:50:42,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:50:42,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:50:42,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025905371] [2024-06-03 19:50:42,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:50:42,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:50:42,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:50:42,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:50:42,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:50:42,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-03 19:50:42,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 304 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) [2024-06-03 19:50:42,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:50:42,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-03 19:50:42,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:50:44,545 INFO L124 PetriNetUnfolderBase]: 16096/22080 cut-off events. [2024-06-03 19:50:44,546 INFO L125 PetriNetUnfolderBase]: For 48221/48221 co-relation queries the response was YES. [2024-06-03 19:50:44,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69542 conditions, 22080 events. 16096/22080 cut-off events. For 48221/48221 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 119370 event pairs, 8595 based on Foata normal form. 10/21871 useless extension candidates. Maximal degree in co-relation 69520. Up to 21510 conditions per place. [2024-06-03 19:50:44,695 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 83 selfloop transitions, 22 changer transitions 0/110 dead transitions. [2024-06-03 19:50:44,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 718 flow [2024-06-03 19:50:44,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:50:44,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:50:44,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-03 19:50:44,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-03 19:50:44,697 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 304 flow. Second operand 6 states and 153 transitions. [2024-06-03 19:50:44,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 718 flow [2024-06-03 19:50:44,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 110 transitions, 685 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-03 19:50:44,705 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 451 flow [2024-06-03 19:50:44,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=451, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2024-06-03 19:50:44,706 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-06-03 19:50:44,706 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 451 flow [2024-06-03 19:50:44,707 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) [2024-06-03 19:50:44,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:50:44,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:50:44,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 19:50:44,707 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)] === [2024-06-03 19:50:44,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:50:44,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1454928711, now seen corresponding path program 1 times [2024-06-03 19:50:44,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:50:44,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822469936] [2024-06-03 19:50:44,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:50:44,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:50:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:50:45,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:50:45,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:50:45,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822469936] [2024-06-03 19:50:45,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822469936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:50:45,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:50:45,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:50:45,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237063760] [2024-06-03 19:50:45,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:50:45,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:50:45,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:50:45,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:50:45,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:50:45,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-03 19:50:45,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 451 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) [2024-06-03 19:50:45,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:50:45,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-03 19:50:45,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:50:47,588 INFO L124 PetriNetUnfolderBase]: 16118/22118 cut-off events. [2024-06-03 19:50:47,588 INFO L125 PetriNetUnfolderBase]: For 71642/71652 co-relation queries the response was YES. [2024-06-03 19:50:47,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77590 conditions, 22118 events. 16118/22118 cut-off events. For 71642/71652 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 119674 event pairs, 8621 based on Foata normal form. 11/21913 useless extension candidates. Maximal degree in co-relation 77565. Up to 21596 conditions per place. [2024-06-03 19:50:47,742 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 92 selfloop transitions, 21 changer transitions 0/118 dead transitions. [2024-06-03 19:50:47,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 118 transitions, 865 flow [2024-06-03 19:50:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:50:47,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:50:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-03 19:50:47,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660493827160494 [2024-06-03 19:50:47,744 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 451 flow. Second operand 6 states and 151 transitions. [2024-06-03 19:50:47,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 118 transitions, 865 flow [2024-06-03 19:50:47,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 118 transitions, 839 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-03 19:50:47,762 INFO L231 Difference]: Finished difference. Result has 77 places, 88 transitions, 562 flow [2024-06-03 19:50:47,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=562, PETRI_PLACES=77, PETRI_TRANSITIONS=88} [2024-06-03 19:50:47,763 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2024-06-03 19:50:47,763 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 88 transitions, 562 flow [2024-06-03 19:50:47,763 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) [2024-06-03 19:50:47,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:50:47,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:50:47,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 19:50:47,763 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)] === [2024-06-03 19:50:47,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:50:47,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1461392211, now seen corresponding path program 2 times [2024-06-03 19:50:47,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:50:47,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222024619] [2024-06-03 19:50:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:50:47,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:50:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:50:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:50:48,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:50:48,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222024619] [2024-06-03 19:50:48,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222024619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:50:48,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:50:48,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:50:48,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595880565] [2024-06-03 19:50:48,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:50:48,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:50:48,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:50:48,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:50:48,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:50:48,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-03 19:50:48,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 88 transitions, 562 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) [2024-06-03 19:50:48,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:50:48,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-03 19:50:48,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:50:51,017 INFO L124 PetriNetUnfolderBase]: 16109/22104 cut-off events. [2024-06-03 19:50:51,019 INFO L125 PetriNetUnfolderBase]: For 92897/92897 co-relation queries the response was YES. [2024-06-03 19:50:51,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82465 conditions, 22104 events. 16109/22104 cut-off events. For 92897/92897 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 119504 event pairs, 8614 based on Foata normal form. 3/21892 useless extension candidates. Maximal degree in co-relation 82437. Up to 21623 conditions per place. [2024-06-03 19:50:51,176 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 93 selfloop transitions, 14 changer transitions 0/112 dead transitions. [2024-06-03 19:50:51,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 112 transitions, 838 flow [2024-06-03 19:50:51,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:50:51,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:50:51,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-03 19:50:51,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44135802469135804 [2024-06-03 19:50:51,178 INFO L175 Difference]: Start difference. First operand has 77 places, 88 transitions, 562 flow. Second operand 6 states and 143 transitions. [2024-06-03 19:50:51,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 112 transitions, 838 flow [2024-06-03 19:50:51,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 112 transitions, 772 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-03 19:50:51,235 INFO L231 Difference]: Finished difference. Result has 81 places, 88 transitions, 535 flow [2024-06-03 19:50:51,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=535, PETRI_PLACES=81, PETRI_TRANSITIONS=88} [2024-06-03 19:50:51,237 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 24 predicate places. [2024-06-03 19:50:51,237 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 88 transitions, 535 flow [2024-06-03 19:50:51,238 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) [2024-06-03 19:50:51,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:50:51,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:50:51,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 19:50:51,238 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)] === [2024-06-03 19:50:51,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:50:51,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1488179171, now seen corresponding path program 1 times [2024-06-03 19:50:51,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:50:51,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090095139] [2024-06-03 19:50:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:50:51,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:50:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:50:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:50:52,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:50:52,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090095139] [2024-06-03 19:50:52,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090095139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:50:52,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:50:52,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:50:52,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633306744] [2024-06-03 19:50:52,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:50:52,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:50:52,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:50:52,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:50:52,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:50:52,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-03 19:50:52,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 88 transitions, 535 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:50:52,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:50:52,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-03 19:50:52,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:50:54,744 INFO L124 PetriNetUnfolderBase]: 16131/22138 cut-off events. [2024-06-03 19:50:54,744 INFO L125 PetriNetUnfolderBase]: For 103559/103559 co-relation queries the response was YES. [2024-06-03 19:50:54,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83426 conditions, 22138 events. 16131/22138 cut-off events. For 103559/103559 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 119694 event pairs, 8441 based on Foata normal form. 3/21928 useless extension candidates. Maximal degree in co-relation 83396. Up to 21626 conditions per place. [2024-06-03 19:50:54,891 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 106 selfloop transitions, 18 changer transitions 0/129 dead transitions. [2024-06-03 19:50:54,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 129 transitions, 923 flow [2024-06-03 19:50:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:50:54,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:50:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-03 19:50:54,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-03 19:50:54,893 INFO L175 Difference]: Start difference. First operand has 81 places, 88 transitions, 535 flow. Second operand 7 states and 171 transitions. [2024-06-03 19:50:54,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 129 transitions, 923 flow [2024-06-03 19:50:54,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 129 transitions, 879 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-03 19:50:54,935 INFO L231 Difference]: Finished difference. Result has 82 places, 92 transitions, 590 flow [2024-06-03 19:50:54,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=82, PETRI_TRANSITIONS=92} [2024-06-03 19:50:54,936 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2024-06-03 19:50:54,936 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 92 transitions, 590 flow [2024-06-03 19:50:54,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:50:54,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:50:54,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:50:54,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 19:50:54,937 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:50:54,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:50:54,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1315609373, now seen corresponding path program 2 times [2024-06-03 19:50:54,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:50:54,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263646152] [2024-06-03 19:50:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:50:54,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:50:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:50:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:50:55,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:50:55,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263646152] [2024-06-03 19:50:55,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263646152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:50:55,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:50:55,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:50:55,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873273289] [2024-06-03 19:50:55,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:50:55,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:50:55,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:50:55,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:50:55,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:50:55,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-03 19:50:55,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 92 transitions, 590 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:50:55,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:50:55,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-03 19:50:55,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:50:58,245 INFO L124 PetriNetUnfolderBase]: 16153/22170 cut-off events. [2024-06-03 19:50:58,245 INFO L125 PetriNetUnfolderBase]: For 128487/128497 co-relation queries the response was YES. [2024-06-03 19:50:58,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88574 conditions, 22170 events. 16153/22170 cut-off events. For 128487/128497 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 119802 event pairs, 8448 based on Foata normal form. 11/21967 useless extension candidates. Maximal degree in co-relation 88544. Up to 21578 conditions per place. [2024-06-03 19:50:58,364 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 97 selfloop transitions, 35 changer transitions 0/137 dead transitions. [2024-06-03 19:50:58,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 137 transitions, 1106 flow [2024-06-03 19:50:58,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:50:58,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:50:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-03 19:50:58,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-03 19:50:58,366 INFO L175 Difference]: Start difference. First operand has 82 places, 92 transitions, 590 flow. Second operand 7 states and 175 transitions. [2024-06-03 19:50:58,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 137 transitions, 1106 flow [2024-06-03 19:50:58,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 137 transitions, 1039 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-03 19:50:58,405 INFO L231 Difference]: Finished difference. Result has 84 places, 100 transitions, 716 flow [2024-06-03 19:50:58,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=716, PETRI_PLACES=84, PETRI_TRANSITIONS=100} [2024-06-03 19:50:58,406 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 27 predicate places. [2024-06-03 19:50:58,406 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 100 transitions, 716 flow [2024-06-03 19:50:58,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:50:58,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:50:58,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:50:58,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 19:50:58,407 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)] === [2024-06-03 19:50:58,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:50:58,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1315609187, now seen corresponding path program 1 times [2024-06-03 19:50:58,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:50:58,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587292942] [2024-06-03 19:50:58,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:50:58,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:50:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:50:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:50:59,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:50:59,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587292942] [2024-06-03 19:50:59,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587292942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:50:59,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:50:59,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:50:59,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803309054] [2024-06-03 19:50:59,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:50:59,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:50:59,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:50:59,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:50:59,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:50:59,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-03 19:50:59,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 100 transitions, 716 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:50:59,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:50:59,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-03 19:50:59,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:01,828 INFO L124 PetriNetUnfolderBase]: 16362/22456 cut-off events. [2024-06-03 19:51:01,828 INFO L125 PetriNetUnfolderBase]: For 162366/162374 co-relation queries the response was YES. [2024-06-03 19:51:01,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94830 conditions, 22456 events. 16362/22456 cut-off events. For 162366/162374 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 121447 event pairs, 7780 based on Foata normal form. 13/22263 useless extension candidates. Maximal degree in co-relation 94799. Up to 21623 conditions per place. [2024-06-03 19:51:01,949 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 125 selfloop transitions, 39 changer transitions 0/169 dead transitions. [2024-06-03 19:51:01,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 169 transitions, 1516 flow [2024-06-03 19:51:01,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:51:01,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:51:01,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-03 19:51:01,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947089947089947 [2024-06-03 19:51:01,951 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 716 flow. Second operand 7 states and 187 transitions. [2024-06-03 19:51:01,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 169 transitions, 1516 flow [2024-06-03 19:51:02,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 169 transitions, 1448 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-03 19:51:02,007 INFO L231 Difference]: Finished difference. Result has 91 places, 122 transitions, 994 flow [2024-06-03 19:51:02,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=994, PETRI_PLACES=91, PETRI_TRANSITIONS=122} [2024-06-03 19:51:02,008 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2024-06-03 19:51:02,008 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 122 transitions, 994 flow [2024-06-03 19:51:02,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:02,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:02,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:02,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 19:51:02,009 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)] === [2024-06-03 19:51:02,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:02,009 INFO L85 PathProgramCache]: Analyzing trace with hash -452086517, now seen corresponding path program 2 times [2024-06-03 19:51:02,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:02,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226356414] [2024-06-03 19:51:02,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:02,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:02,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:02,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226356414] [2024-06-03 19:51:02,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226356414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:02,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:02,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:51:02,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632348285] [2024-06-03 19:51:02,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:02,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:51:02,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:02,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:51:02,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:51:02,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-03 19:51:02,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 122 transitions, 994 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:02,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:02,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-03 19:51:02,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:05,234 INFO L124 PetriNetUnfolderBase]: 16448/22571 cut-off events. [2024-06-03 19:51:05,235 INFO L125 PetriNetUnfolderBase]: For 204400/204402 co-relation queries the response was YES. [2024-06-03 19:51:05,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104713 conditions, 22571 events. 16448/22571 cut-off events. For 204400/204402 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 122074 event pairs, 8017 based on Foata normal form. 12/22378 useless extension candidates. Maximal degree in co-relation 104677. Up to 21974 conditions per place. [2024-06-03 19:51:05,432 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 133 selfloop transitions, 27 changer transitions 0/165 dead transitions. [2024-06-03 19:51:05,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 165 transitions, 1571 flow [2024-06-03 19:51:05,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:51:05,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:51:05,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-03 19:51:05,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-03 19:51:05,442 INFO L175 Difference]: Start difference. First operand has 91 places, 122 transitions, 994 flow. Second operand 7 states and 175 transitions. [2024-06-03 19:51:05,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 165 transitions, 1571 flow [2024-06-03 19:51:05,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 165 transitions, 1505 flow, removed 32 selfloop flow, removed 1 redundant places. [2024-06-03 19:51:05,619 INFO L231 Difference]: Finished difference. Result has 98 places, 129 transitions, 1090 flow [2024-06-03 19:51:05,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1090, PETRI_PLACES=98, PETRI_TRANSITIONS=129} [2024-06-03 19:51:05,620 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 41 predicate places. [2024-06-03 19:51:05,620 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 129 transitions, 1090 flow [2024-06-03 19:51:05,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:05,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:05,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:05,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 19:51:05,620 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:05,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:05,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1498180787, now seen corresponding path program 3 times [2024-06-03 19:51:05,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:05,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14742103] [2024-06-03 19:51:05,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:05,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:06,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:06,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14742103] [2024-06-03 19:51:06,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14742103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:06,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:06,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:51:06,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843273927] [2024-06-03 19:51:06,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:06,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:51:06,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:06,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:51:06,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:51:06,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-03 19:51:06,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 129 transitions, 1090 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:06,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:06,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-03 19:51:06,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:09,762 INFO L124 PetriNetUnfolderBase]: 16439/22555 cut-off events. [2024-06-03 19:51:09,762 INFO L125 PetriNetUnfolderBase]: For 229409/229409 co-relation queries the response was YES. [2024-06-03 19:51:09,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107270 conditions, 22555 events. 16439/22555 cut-off events. For 229409/229409 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 121797 event pairs, 8057 based on Foata normal form. 3/22350 useless extension candidates. Maximal degree in co-relation 107230. Up to 22050 conditions per place. [2024-06-03 19:51:09,935 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 137 selfloop transitions, 18 changer transitions 0/160 dead transitions. [2024-06-03 19:51:09,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 160 transitions, 1480 flow [2024-06-03 19:51:09,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:51:09,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:51:09,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-03 19:51:09,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-03 19:51:09,937 INFO L175 Difference]: Start difference. First operand has 98 places, 129 transitions, 1090 flow. Second operand 7 states and 165 transitions. [2024-06-03 19:51:09,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 160 transitions, 1480 flow [2024-06-03 19:51:10,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 160 transitions, 1368 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-03 19:51:10,041 INFO L231 Difference]: Finished difference. Result has 101 places, 129 transitions, 1025 flow [2024-06-03 19:51:10,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1025, PETRI_PLACES=101, PETRI_TRANSITIONS=129} [2024-06-03 19:51:10,042 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 44 predicate places. [2024-06-03 19:51:10,042 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 129 transitions, 1025 flow [2024-06-03 19:51:10,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:10,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:10,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:10,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 19:51:10,042 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)] === [2024-06-03 19:51:10,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:10,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1498180973, now seen corresponding path program 3 times [2024-06-03 19:51:10,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:10,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546632880] [2024-06-03 19:51:10,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:10,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:10,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:10,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:10,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546632880] [2024-06-03 19:51:10,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546632880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:10,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:10,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:51:10,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325657609] [2024-06-03 19:51:10,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:10,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:51:10,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:10,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:51:10,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:51:11,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-03 19:51:11,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 129 transitions, 1025 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:11,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:11,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-03 19:51:11,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:13,774 INFO L124 PetriNetUnfolderBase]: 16463/22591 cut-off events. [2024-06-03 19:51:13,774 INFO L125 PetriNetUnfolderBase]: For 249529/249531 co-relation queries the response was YES. [2024-06-03 19:51:13,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108753 conditions, 22591 events. 16463/22591 cut-off events. For 249529/249531 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 122091 event pairs, 8003 based on Foata normal form. 12/22398 useless extension candidates. Maximal degree in co-relation 108713. Up to 21863 conditions per place. [2024-06-03 19:51:13,946 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 136 selfloop transitions, 36 changer transitions 0/177 dead transitions. [2024-06-03 19:51:13,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 177 transitions, 1748 flow [2024-06-03 19:51:13,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:51:13,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:51:13,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-03 19:51:13,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47354497354497355 [2024-06-03 19:51:13,947 INFO L175 Difference]: Start difference. First operand has 101 places, 129 transitions, 1025 flow. Second operand 7 states and 179 transitions. [2024-06-03 19:51:13,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 177 transitions, 1748 flow [2024-06-03 19:51:14,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 177 transitions, 1689 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-03 19:51:14,100 INFO L231 Difference]: Finished difference. Result has 103 places, 138 transitions, 1200 flow [2024-06-03 19:51:14,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1200, PETRI_PLACES=103, PETRI_TRANSITIONS=138} [2024-06-03 19:51:14,100 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2024-06-03 19:51:14,101 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 138 transitions, 1200 flow [2024-06-03 19:51:14,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:14,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:14,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:14,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 19:51:14,101 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)] === [2024-06-03 19:51:14,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:14,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1498427051, now seen corresponding path program 1 times [2024-06-03 19:51:14,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:14,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608169830] [2024-06-03 19:51:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:14,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:15,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:15,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608169830] [2024-06-03 19:51:15,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608169830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:15,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:15,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:51:15,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269120789] [2024-06-03 19:51:15,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:15,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:51:15,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:15,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:51:15,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:51:15,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-03 19:51:15,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 138 transitions, 1200 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 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) [2024-06-03 19:51:15,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:15,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-03 19:51:15,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:18,824 INFO L124 PetriNetUnfolderBase]: 16483/22615 cut-off events. [2024-06-03 19:51:18,824 INFO L125 PetriNetUnfolderBase]: For 285662/285664 co-relation queries the response was YES. [2024-06-03 19:51:18,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112681 conditions, 22615 events. 16483/22615 cut-off events. For 285662/285664 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 122180 event pairs, 7819 based on Foata normal form. 12/22419 useless extension candidates. Maximal degree in co-relation 112639. Up to 21978 conditions per place. [2024-06-03 19:51:18,974 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 140 selfloop transitions, 33 changer transitions 0/178 dead transitions. [2024-06-03 19:51:18,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 178 transitions, 1810 flow [2024-06-03 19:51:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:51:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:51:18,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-03 19:51:18,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2024-06-03 19:51:18,977 INFO L175 Difference]: Start difference. First operand has 103 places, 138 transitions, 1200 flow. Second operand 7 states and 176 transitions. [2024-06-03 19:51:18,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 178 transitions, 1810 flow [2024-06-03 19:51:19,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 178 transitions, 1736 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-03 19:51:19,104 INFO L231 Difference]: Finished difference. Result has 107 places, 142 transitions, 1273 flow [2024-06-03 19:51:19,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1273, PETRI_PLACES=107, PETRI_TRANSITIONS=142} [2024-06-03 19:51:19,105 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 50 predicate places. [2024-06-03 19:51:19,105 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 142 transitions, 1273 flow [2024-06-03 19:51:19,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 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) [2024-06-03 19:51:19,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:19,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:19,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 19:51:19,105 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)] === [2024-06-03 19:51:19,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:19,106 INFO L85 PathProgramCache]: Analyzing trace with hash 56932895, now seen corresponding path program 1 times [2024-06-03 19:51:19,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:19,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688042666] [2024-06-03 19:51:19,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:19,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:19,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:19,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688042666] [2024-06-03 19:51:19,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688042666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:19,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:19,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:51:19,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679845918] [2024-06-03 19:51:19,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:19,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:51:19,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:19,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:51:19,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:51:19,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:51:19,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 142 transitions, 1273 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2024-06-03 19:51:19,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:19,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:51:19,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:22,791 INFO L124 PetriNetUnfolderBase]: 15661/21791 cut-off events. [2024-06-03 19:51:22,791 INFO L125 PetriNetUnfolderBase]: For 317595/317595 co-relation queries the response was YES. [2024-06-03 19:51:23,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113843 conditions, 21791 events. 15661/21791 cut-off events. For 317595/317595 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 121146 event pairs, 8002 based on Foata normal form. 2/21585 useless extension candidates. Maximal degree in co-relation 113799. Up to 21077 conditions per place. [2024-06-03 19:51:23,142 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 131 selfloop transitions, 10 changer transitions 0/156 dead transitions. [2024-06-03 19:51:23,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 156 transitions, 1591 flow [2024-06-03 19:51:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:51:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:51:23,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-03 19:51:23,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44814814814814813 [2024-06-03 19:51:23,144 INFO L175 Difference]: Start difference. First operand has 107 places, 142 transitions, 1273 flow. Second operand 5 states and 121 transitions. [2024-06-03 19:51:23,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 156 transitions, 1591 flow [2024-06-03 19:51:23,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 156 transitions, 1460 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-03 19:51:23,282 INFO L231 Difference]: Finished difference. Result has 107 places, 142 transitions, 1171 flow [2024-06-03 19:51:23,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1171, PETRI_PLACES=107, PETRI_TRANSITIONS=142} [2024-06-03 19:51:23,282 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 50 predicate places. [2024-06-03 19:51:23,283 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 142 transitions, 1171 flow [2024-06-03 19:51:23,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2024-06-03 19:51:23,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:23,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:23,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 19:51:23,283 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)] === [2024-06-03 19:51:23,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:23,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2000953072, now seen corresponding path program 1 times [2024-06-03 19:51:23,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:23,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830325861] [2024-06-03 19:51:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:23,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:24,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:24,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830325861] [2024-06-03 19:51:24,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830325861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:24,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:24,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:51:24,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103351283] [2024-06-03 19:51:24,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:24,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:51:24,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:24,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:51:24,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:51:24,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-03 19:51:24,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 142 transitions, 1171 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 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) [2024-06-03 19:51:24,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:24,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-03 19:51:24,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand