./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix040_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix040_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:27:21,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:27:21,775 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:27:21,778 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:27:21,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:27:21,793 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:27:21,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:27:21,793 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:27:21,794 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:27:21,794 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:27:21,794 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:27:21,795 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:27:21,795 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:27:21,795 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:27:21,796 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:27:21,796 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:27:21,796 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:27:21,796 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:27:21,797 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:27:21,797 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:27:21,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:27:21,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:27:21,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:27:21,798 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:27:21,798 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:27:21,799 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:27:21,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:27:21,799 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:27:21,799 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:27:21,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:27:21,800 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:27:21,800 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:27:21,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:27:21,801 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:27:21,801 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:27:21,801 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:27:21,802 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:27:21,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:27:21,802 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:27:21,802 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:27:21,803 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:27:21,803 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:27:21,803 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:27:21,803 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:27:21,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:27:22,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:27:22,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:27:22,008 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:27:22,009 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:27:22,010 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix040_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 03:27:22,234 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:27:22,234 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:27:22,235 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:27:23,282 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:27:23,470 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:27:23,471 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:27:23,486 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c221cd71/86a4297a0d6b400bbda92276e08d3b42/FLAG6ea89c6b3 [2024-06-28 03:27:23,498 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c221cd71/86a4297a0d6b400bbda92276e08d3b42 [2024-06-28 03:27:23,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:27:23,500 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:27:23,500 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:27:23,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:27:23,504 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:27:23,505 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:27:22" (1/2) ... [2024-06-28 03:27:23,505 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da7ad0a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:27:23, skipping insertion in model container [2024-06-28 03:27:23,505 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:27:22" (1/2) ... [2024-06-28 03:27:23,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c243f1a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:27:23, skipping insertion in model container [2024-06-28 03:27:23,507 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:27:23" (2/2) ... [2024-06-28 03:27:23,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da7ad0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:27:23, skipping insertion in model container [2024-06-28 03:27:23,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:27:23" (2/2) ... [2024-06-28 03:27:23,507 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:27:23,673 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:27:23,674 INFO L97 edCorrectnessWitness]: Location invariant before [L877-L877] ((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff0_thd4 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$r_buff1_thd4 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:27:23,674 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] ((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff0_thd4 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$r_buff1_thd4 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:27:23,675 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff0_thd4 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$r_buff1_thd4 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:27:23,675 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff0_thd4 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$r_buff1_thd4 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:27:23,675 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:27:23,675 INFO L106 edCorrectnessWitness]: ghost_update [L870-L870] multithreaded = 1; [2024-06-28 03:27:23,711 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:27:24,008 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:27:24,022 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:27:24,162 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:27:24,199 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:27:24,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:27:24 WrapperNode [2024-06-28 03:27:24,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:27:24,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:27:24,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:27:24,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:27:24,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:27:24" (1/1) ... [2024-06-28 03:27:24,234 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:27:24" (1/1) ... [2024-06-28 03:27:24,272 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-28 03:27:24,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:27:24,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:27:24,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:27:24,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:27:24,284 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:27:24" (1/1) ... [2024-06-28 03:27:24,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:27:24" (1/1) ... [2024-06-28 03:27:24,298 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:27:24" (1/1) ... [2024-06-28 03:27:24,320 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:27:24,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:27:24" (1/1) ... [2024-06-28 03:27:24,321 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:27:24" (1/1) ... [2024-06-28 03:27:24,332 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:27:24" (1/1) ... [2024-06-28 03:27:24,333 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:27:24" (1/1) ... [2024-06-28 03:27:24,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:27:24" (1/1) ... [2024-06-28 03:27:24,336 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:27:24" (1/1) ... [2024-06-28 03:27:24,339 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:27:24,339 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:27:24,339 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:27:24,339 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:27:24,340 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:27:24" (1/1) ... [2024-06-28 03:27:24,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:27:24,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:27:24,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:27:24,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:27:24,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:27:24,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:27:24,424 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:27:24,425 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:27:24,425 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:27:24,425 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:27:24,425 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:27:24,425 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:27:24,425 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 03:27:24,425 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 03:27:24,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:27:24,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:27:24,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:27:24,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:27:24,427 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:27:24,532 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:27:24,534 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:27:24,880 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:27:24,881 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:27:25,048 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:27:25,048 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:27:25,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:27:25 BoogieIcfgContainer [2024-06-28 03:27:25,050 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:27:25,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:27:25,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:27:25,056 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:27:25,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:27:22" (1/4) ... [2024-06-28 03:27:25,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7defba62 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:27:25, skipping insertion in model container [2024-06-28 03:27:25,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:27:23" (2/4) ... [2024-06-28 03:27:25,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7defba62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:27:25, skipping insertion in model container [2024-06-28 03:27:25,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:27:24" (3/4) ... [2024-06-28 03:27:25,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7defba62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:27:25, skipping insertion in model container [2024-06-28 03:27:25,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:27:25" (4/4) ... [2024-06-28 03:27:25,059 INFO L112 eAbstractionObserver]: Analyzing ICFG mix040_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:27:25,072 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:27:25,072 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 03:27:25,072 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:27:25,119 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:27:25,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-28 03:27:25,173 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-28 03:27:25,173 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:27:25,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 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. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:27:25,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-28 03:27:25,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-28 03:27:25,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:27:25,188 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;@1f64e45d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:27:25,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 03:27:25,191 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:27:25,191 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:27:25,191 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:27:25,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:25,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:27:25,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:27:25,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:25,196 INFO L85 PathProgramCache]: Analyzing trace with hash 405960659, now seen corresponding path program 1 times [2024-06-28 03:27:25,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:25,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962132138] [2024-06-28 03:27:25,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:25,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:26,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:26,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962132138] [2024-06-28 03:27:26,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962132138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:26,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:26,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:27:26,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365651269] [2024-06-28 03:27:26,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:26,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:27:26,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:26,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:27:26,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:27:26,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:27:26,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:26,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:26,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:27:26,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:28,085 INFO L124 PetriNetUnfolderBase]: 13331/18439 cut-off events. [2024-06-28 03:27:28,086 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2024-06-28 03:27:28,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36887 conditions, 18439 events. 13331/18439 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 101324 event pairs, 10516 based on Foata normal form. 1/18003 useless extension candidates. Maximal degree in co-relation 36874. Up to 17985 conditions per place. [2024-06-28 03:27:28,179 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 45 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-28 03:27:28,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 235 flow [2024-06-28 03:27:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:27:28,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:27:28,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-06-28 03:27:28,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6037735849056604 [2024-06-28 03:27:28,190 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 96 transitions. [2024-06-28 03:27:28,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 235 flow [2024-06-28 03:27:28,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:27:28,194 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-28 03:27:28,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-28 03:27:28,198 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-28 03:27:28,198 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-28 03:27:28,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:28,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:28,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:28,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:27:28,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:27:28,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:28,200 INFO L85 PathProgramCache]: Analyzing trace with hash -712681370, now seen corresponding path program 1 times [2024-06-28 03:27:28,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:28,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386782212] [2024-06-28 03:27:28,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:28,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:28,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:28,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386782212] [2024-06-28 03:27:28,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386782212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:28,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:28,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:27:28,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544211494] [2024-06-28 03:27:28,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:28,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:27:28,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:28,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:27:28,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:27:28,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:27:28,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:28,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:28,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:27:28,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:30,451 INFO L124 PetriNetUnfolderBase]: 13321/18425 cut-off events. [2024-06-28 03:27:30,451 INFO L125 PetriNetUnfolderBase]: For 3250/3250 co-relation queries the response was YES. [2024-06-28 03:27:30,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41334 conditions, 18425 events. 13321/18425 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 101256 event pairs, 9607 based on Foata normal form. 4/18211 useless extension candidates. Maximal degree in co-relation 41322. Up to 17950 conditions per place. [2024-06-28 03:27:30,546 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 55 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-28 03:27:30,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 327 flow [2024-06-28 03:27:30,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:27:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:27:30,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-06-28 03:27:30,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2024-06-28 03:27:30,548 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 124 transitions. [2024-06-28 03:27:30,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 327 flow [2024-06-28 03:27:30,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:27:30,555 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-28 03:27:30,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-28 03:27:30,556 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-28 03:27:30,556 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-28 03:27:30,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:30,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:30,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:30,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:27:30,557 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:27:30,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:30,557 INFO L85 PathProgramCache]: Analyzing trace with hash -618284250, now seen corresponding path program 1 times [2024-06-28 03:27:30,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:30,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216144601] [2024-06-28 03:27:30,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:30,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:31,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:31,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:31,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216144601] [2024-06-28 03:27:31,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216144601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:31,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:31,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:27:31,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092443700] [2024-06-28 03:27:31,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:31,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:27:31,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:31,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:27:31,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:27:31,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:27:31,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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) [2024-06-28 03:27:31,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:31,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:27:31,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:33,219 INFO L124 PetriNetUnfolderBase]: 13339/18519 cut-off events. [2024-06-28 03:27:33,220 INFO L125 PetriNetUnfolderBase]: For 9399/9399 co-relation queries the response was YES. [2024-06-28 03:27:33,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45920 conditions, 18519 events. 13339/18519 cut-off events. For 9399/9399 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 102567 event pairs, 8101 based on Foata normal form. 7/18322 useless extension candidates. Maximal degree in co-relation 45906. Up to 17871 conditions per place. [2024-06-28 03:27:33,299 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 73 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-28 03:27:33,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 543 flow [2024-06-28 03:27:33,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:27:33,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:27:33,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-06-28 03:27:33,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6113207547169811 [2024-06-28 03:27:33,301 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 5 states and 162 transitions. [2024-06-28 03:27:33,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 543 flow [2024-06-28 03:27:33,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 524 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 03:27:33,305 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 312 flow [2024-06-28 03:27:33,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2024-06-28 03:27:33,306 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-28 03:27:33,306 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 312 flow [2024-06-28 03:27:33,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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) [2024-06-28 03:27:33,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:33,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:33,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:27:33,307 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:27:33,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:33,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1255212561, now seen corresponding path program 1 times [2024-06-28 03:27:33,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:33,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316384984] [2024-06-28 03:27:33,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:33,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:34,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:34,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:34,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316384984] [2024-06-28 03:27:34,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316384984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:34,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:34,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:27:34,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208563534] [2024-06-28 03:27:34,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:34,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:27:34,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:34,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:27:34,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:27:34,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:27:34,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:34,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:34,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:27:34,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:36,136 INFO L124 PetriNetUnfolderBase]: 13357/18543 cut-off events. [2024-06-28 03:27:36,137 INFO L125 PetriNetUnfolderBase]: For 22035/22040 co-relation queries the response was YES. [2024-06-28 03:27:36,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52899 conditions, 18543 events. 13357/18543 cut-off events. For 22035/22040 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 102603 event pairs, 7192 based on Foata normal form. 11/18350 useless extension candidates. Maximal degree in co-relation 52882. Up to 17857 conditions per place. [2024-06-28 03:27:36,267 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 83 selfloop transitions, 26 changer transitions 0/116 dead transitions. [2024-06-28 03:27:36,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 116 transitions, 712 flow [2024-06-28 03:27:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:27:36,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:27:36,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-06-28 03:27:36,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60062893081761 [2024-06-28 03:27:36,272 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 312 flow. Second operand 6 states and 191 transitions. [2024-06-28 03:27:36,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 116 transitions, 712 flow [2024-06-28 03:27:36,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 116 transitions, 700 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 03:27:36,281 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 406 flow [2024-06-28 03:27:36,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=406, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2024-06-28 03:27:36,283 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-06-28 03:27:36,283 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 406 flow [2024-06-28 03:27:36,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:36,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:36,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:36,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:27:36,284 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:27:36,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:36,284 INFO L85 PathProgramCache]: Analyzing trace with hash 256885529, now seen corresponding path program 1 times [2024-06-28 03:27:36,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:36,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677398415] [2024-06-28 03:27:36,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:36,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:37,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:37,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677398415] [2024-06-28 03:27:37,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677398415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:37,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:37,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:27:37,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213153974] [2024-06-28 03:27:37,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:37,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:27:37,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:37,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:27:37,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:27:37,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:27:37,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 406 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:37,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:37,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:27:37,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:39,073 INFO L124 PetriNetUnfolderBase]: 13386/18590 cut-off events. [2024-06-28 03:27:39,073 INFO L125 PetriNetUnfolderBase]: For 34918/34923 co-relation queries the response was YES. [2024-06-28 03:27:39,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58370 conditions, 18590 events. 13386/18590 cut-off events. For 34918/34923 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 102930 event pairs, 6153 based on Foata normal form. 18/18404 useless extension candidates. Maximal degree in co-relation 58350. Up to 17822 conditions per place. [2024-06-28 03:27:39,159 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 90 selfloop transitions, 30 changer transitions 0/127 dead transitions. [2024-06-28 03:27:39,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 127 transitions, 856 flow [2024-06-28 03:27:39,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:27:39,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:27:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-06-28 03:27:39,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5822102425876011 [2024-06-28 03:27:39,161 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 406 flow. Second operand 7 states and 216 transitions. [2024-06-28 03:27:39,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 127 transitions, 856 flow [2024-06-28 03:27:39,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 127 transitions, 790 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:27:39,170 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 445 flow [2024-06-28 03:27:39,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=445, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2024-06-28 03:27:39,171 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-06-28 03:27:39,171 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 445 flow [2024-06-28 03:27:39,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:39,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:39,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:39,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:27:39,171 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:27:39,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:39,172 INFO L85 PathProgramCache]: Analyzing trace with hash -890928937, now seen corresponding path program 1 times [2024-06-28 03:27:39,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:39,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64237509] [2024-06-28 03:27:39,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:39,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:39,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:39,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:39,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64237509] [2024-06-28 03:27:39,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64237509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:39,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:39,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:27:39,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896608927] [2024-06-28 03:27:39,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:39,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:27:39,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:39,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:27:39,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:27:39,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:27:39,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 445 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) [2024-06-28 03:27:39,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:39,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:27:39,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:41,697 INFO L124 PetriNetUnfolderBase]: 13377/18558 cut-off events. [2024-06-28 03:27:41,697 INFO L125 PetriNetUnfolderBase]: For 49374/49374 co-relation queries the response was YES. [2024-06-28 03:27:41,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62614 conditions, 18558 events. 13377/18558 cut-off events. For 49374/49374 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 102549 event pairs, 7117 based on Foata normal form. 3/18349 useless extension candidates. Maximal degree in co-relation 62592. Up to 18037 conditions per place. [2024-06-28 03:27:41,821 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 74 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2024-06-28 03:27:41,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 657 flow [2024-06-28 03:27:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:27:41,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:27:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-28 03:27:41,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4679245283018868 [2024-06-28 03:27:41,823 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 445 flow. Second operand 5 states and 124 transitions. [2024-06-28 03:27:41,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 657 flow [2024-06-28 03:27:41,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 90 transitions, 570 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 03:27:41,835 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 389 flow [2024-06-28 03:27:41,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2024-06-28 03:27:41,835 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-06-28 03:27:41,836 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 389 flow [2024-06-28 03:27:41,836 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) [2024-06-28 03:27:41,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:41,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:41,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:27:41,837 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:27:41,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:41,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1876696885, now seen corresponding path program 1 times [2024-06-28 03:27:41,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:41,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667887056] [2024-06-28 03:27:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:41,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:42,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:42,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:42,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667887056] [2024-06-28 03:27:42,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667887056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:42,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:42,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:27:42,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576084689] [2024-06-28 03:27:42,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:42,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:27:42,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:42,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:27:42,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:27:42,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:27:42,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 389 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) [2024-06-28 03:27:42,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:42,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:27:42,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:44,749 INFO L124 PetriNetUnfolderBase]: 13443/18866 cut-off events. [2024-06-28 03:27:44,750 INFO L125 PetriNetUnfolderBase]: For 58024/58024 co-relation queries the response was YES. [2024-06-28 03:27:44,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64045 conditions, 18866 events. 13443/18866 cut-off events. For 58024/58024 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 106347 event pairs, 6711 based on Foata normal form. 14/18856 useless extension candidates. Maximal degree in co-relation 64021. Up to 17913 conditions per place. [2024-06-28 03:27:44,852 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 92 selfloop transitions, 22 changer transitions 0/120 dead transitions. [2024-06-28 03:27:44,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 120 transitions, 841 flow [2024-06-28 03:27:44,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:27:44,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:27:44,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-28 03:27:44,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031446540880503 [2024-06-28 03:27:44,853 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 389 flow. Second operand 6 states and 160 transitions. [2024-06-28 03:27:44,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 120 transitions, 841 flow [2024-06-28 03:27:44,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 120 transitions, 812 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:27:44,867 INFO L231 Difference]: Finished difference. Result has 75 places, 87 transitions, 546 flow [2024-06-28 03:27:44,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=546, PETRI_PLACES=75, PETRI_TRANSITIONS=87} [2024-06-28 03:27:44,868 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2024-06-28 03:27:44,868 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 87 transitions, 546 flow [2024-06-28 03:27:44,868 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) [2024-06-28 03:27:44,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:44,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:44,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:27:44,868 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:27:44,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:44,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1946218900, now seen corresponding path program 1 times [2024-06-28 03:27:44,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:44,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699477266] [2024-06-28 03:27:44,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:44,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:45,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:45,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:45,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699477266] [2024-06-28 03:27:45,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699477266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:45,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:45,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:27:45,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211820484] [2024-06-28 03:27:45,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:45,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:27:45,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:45,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:27:45,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:27:45,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:27:45,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 87 transitions, 546 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) [2024-06-28 03:27:45,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:45,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:27:45,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:47,453 INFO L124 PetriNetUnfolderBase]: 13456/18890 cut-off events. [2024-06-28 03:27:47,453 INFO L125 PetriNetUnfolderBase]: For 81432/81442 co-relation queries the response was YES. [2024-06-28 03:27:47,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71121 conditions, 18890 events. 13456/18890 cut-off events. For 81432/81442 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 106456 event pairs, 6894 based on Foata normal form. 14/18879 useless extension candidates. Maximal degree in co-relation 71095. Up to 18027 conditions per place. [2024-06-28 03:27:47,621 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 90 selfloop transitions, 25 changer transitions 0/121 dead transitions. [2024-06-28 03:27:47,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 121 transitions, 925 flow [2024-06-28 03:27:47,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:27:47,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:27:47,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-28 03:27:47,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937106918238994 [2024-06-28 03:27:47,623 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 546 flow. Second operand 6 states and 157 transitions. [2024-06-28 03:27:47,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 121 transitions, 925 flow [2024-06-28 03:27:47,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 121 transitions, 897 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-28 03:27:47,668 INFO L231 Difference]: Finished difference. Result has 80 places, 91 transitions, 614 flow [2024-06-28 03:27:47,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=614, PETRI_PLACES=80, PETRI_TRANSITIONS=91} [2024-06-28 03:27:47,669 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2024-06-28 03:27:47,669 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 91 transitions, 614 flow [2024-06-28 03:27:47,669 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) [2024-06-28 03:27:47,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:47,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:47,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:27:47,670 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)] === [2024-06-28 03:27:47,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:47,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1484159946, now seen corresponding path program 2 times [2024-06-28 03:27:47,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:47,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740088348] [2024-06-28 03:27:47,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:47,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:48,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:48,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:48,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740088348] [2024-06-28 03:27:48,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740088348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:48,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:48,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:27:48,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446076642] [2024-06-28 03:27:48,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:48,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:27:48,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:48,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:27:48,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:27:48,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:27:48,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 91 transitions, 614 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) [2024-06-28 03:27:48,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:48,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:27:48,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:50,222 INFO L124 PetriNetUnfolderBase]: 13426/18843 cut-off events. [2024-06-28 03:27:50,222 INFO L125 PetriNetUnfolderBase]: For 89766/89766 co-relation queries the response was YES. [2024-06-28 03:27:50,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71710 conditions, 18843 events. 13426/18843 cut-off events. For 89766/89766 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 106299 event pairs, 6887 based on Foata normal form. 3/18822 useless extension candidates. Maximal degree in co-relation 71681. Up to 18083 conditions per place. [2024-06-28 03:27:50,359 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 95 selfloop transitions, 14 changer transitions 0/115 dead transitions. [2024-06-28 03:27:50,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 115 transitions, 894 flow [2024-06-28 03:27:50,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:27:50,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:27:50,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 03:27:50,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46226415094339623 [2024-06-28 03:27:50,362 INFO L175 Difference]: Start difference. First operand has 80 places, 91 transitions, 614 flow. Second operand 6 states and 147 transitions. [2024-06-28 03:27:50,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 115 transitions, 894 flow [2024-06-28 03:27:50,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 115 transitions, 851 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:27:50,409 INFO L231 Difference]: Finished difference. Result has 83 places, 91 transitions, 610 flow [2024-06-28 03:27:50,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=610, PETRI_PLACES=83, PETRI_TRANSITIONS=91} [2024-06-28 03:27:50,410 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2024-06-28 03:27:50,410 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 91 transitions, 610 flow [2024-06-28 03:27:50,410 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) [2024-06-28 03:27:50,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:50,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:50,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:27:50,411 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:27:50,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:50,411 INFO L85 PathProgramCache]: Analyzing trace with hash 203245772, now seen corresponding path program 1 times [2024-06-28 03:27:50,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:50,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398817654] [2024-06-28 03:27:50,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:50,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:51,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:51,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398817654] [2024-06-28 03:27:51,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398817654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:51,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:51,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:27:51,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544929553] [2024-06-28 03:27:51,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:51,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:27:51,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:51,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:27:51,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:27:51,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:27:51,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 91 transitions, 610 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:51,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:51,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:27:51,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:53,442 INFO L124 PetriNetUnfolderBase]: 14562/20165 cut-off events. [2024-06-28 03:27:53,442 INFO L125 PetriNetUnfolderBase]: For 114840/114846 co-relation queries the response was YES. [2024-06-28 03:27:53,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79168 conditions, 20165 events. 14562/20165 cut-off events. For 114840/114846 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 112162 event pairs, 8312 based on Foata normal form. 29/20014 useless extension candidates. Maximal degree in co-relation 79138. Up to 18526 conditions per place. [2024-06-28 03:27:53,555 INFO L140 encePairwiseOnDemand]: 36/53 looper letters, 133 selfloop transitions, 43 changer transitions 0/182 dead transitions. [2024-06-28 03:27:53,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 182 transitions, 1570 flow [2024-06-28 03:27:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:27:53,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:27:53,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 03:27:53,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49292452830188677 [2024-06-28 03:27:53,557 INFO L175 Difference]: Start difference. First operand has 83 places, 91 transitions, 610 flow. Second operand 8 states and 209 transitions. [2024-06-28 03:27:53,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 182 transitions, 1570 flow [2024-06-28 03:27:53,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 182 transitions, 1488 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:27:53,629 INFO L231 Difference]: Finished difference. Result has 89 places, 127 transitions, 1012 flow [2024-06-28 03:27:53,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1012, PETRI_PLACES=89, PETRI_TRANSITIONS=127} [2024-06-28 03:27:53,630 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2024-06-28 03:27:53,630 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 127 transitions, 1012 flow [2024-06-28 03:27:53,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:53,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:53,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:53,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:27:53,631 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:27:53,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:53,631 INFO L85 PathProgramCache]: Analyzing trace with hash 485177288, now seen corresponding path program 2 times [2024-06-28 03:27:53,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:53,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096655370] [2024-06-28 03:27:53,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:53,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:54,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:54,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:54,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096655370] [2024-06-28 03:27:54,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096655370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:54,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:54,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:27:54,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765287411] [2024-06-28 03:27:54,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:54,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:27:54,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:54,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:27:54,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:27:54,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:27:54,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 127 transitions, 1012 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:54,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:54,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:27:54,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:57,049 INFO L124 PetriNetUnfolderBase]: 16830/23410 cut-off events. [2024-06-28 03:27:57,049 INFO L125 PetriNetUnfolderBase]: For 172302/172380 co-relation queries the response was YES. [2024-06-28 03:27:57,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107449 conditions, 23410 events. 16830/23410 cut-off events. For 172302/172380 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 132023 event pairs, 6235 based on Foata normal form. 55/23414 useless extension candidates. Maximal degree in co-relation 107414. Up to 20036 conditions per place. [2024-06-28 03:27:57,262 INFO L140 encePairwiseOnDemand]: 34/53 looper letters, 174 selfloop transitions, 96 changer transitions 0/276 dead transitions. [2024-06-28 03:27:57,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 276 transitions, 2842 flow [2024-06-28 03:27:57,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:27:57,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:27:57,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 229 transitions. [2024-06-28 03:27:57,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5400943396226415 [2024-06-28 03:27:57,264 INFO L175 Difference]: Start difference. First operand has 89 places, 127 transitions, 1012 flow. Second operand 8 states and 229 transitions. [2024-06-28 03:27:57,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 276 transitions, 2842 flow [2024-06-28 03:27:57,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 276 transitions, 2660 flow, removed 90 selfloop flow, removed 1 redundant places. [2024-06-28 03:27:57,436 INFO L231 Difference]: Finished difference. Result has 99 places, 193 transitions, 1881 flow [2024-06-28 03:27:57,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1881, PETRI_PLACES=99, PETRI_TRANSITIONS=193} [2024-06-28 03:27:57,437 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2024-06-28 03:27:57,437 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 193 transitions, 1881 flow [2024-06-28 03:27:57,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:57,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:57,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:57,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:27:57,437 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)] === [2024-06-28 03:27:57,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:57,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1170824982, now seen corresponding path program 3 times [2024-06-28 03:27:57,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:57,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337246206] [2024-06-28 03:27:57,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:57,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:58,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:58,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337246206] [2024-06-28 03:27:58,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337246206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:58,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:58,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:27:58,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949516774] [2024-06-28 03:27:58,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:58,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:27:58,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:58,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:27:58,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:27:58,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:27:58,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 193 transitions, 1881 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:58,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:58,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:27:58,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:00,870 INFO L124 PetriNetUnfolderBase]: 17078/23656 cut-off events. [2024-06-28 03:28:00,870 INFO L125 PetriNetUnfolderBase]: For 233645/233669 co-relation queries the response was YES. [2024-06-28 03:28:00,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123354 conditions, 23656 events. 17078/23656 cut-off events. For 233645/233669 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 133771 event pairs, 8677 based on Foata normal form. 38/23513 useless extension candidates. Maximal degree in co-relation 123313. Up to 22388 conditions per place. [2024-06-28 03:28:01,088 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 219 selfloop transitions, 40 changer transitions 0/265 dead transitions. [2024-06-28 03:28:01,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 265 transitions, 3022 flow [2024-06-28 03:28:01,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:28:01,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:28:01,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-28 03:28:01,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040431266846361 [2024-06-28 03:28:01,090 INFO L175 Difference]: Start difference. First operand has 99 places, 193 transitions, 1881 flow. Second operand 7 states and 187 transitions. [2024-06-28 03:28:01,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 265 transitions, 3022 flow [2024-06-28 03:28:01,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 265 transitions, 2939 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-28 03:28:01,363 INFO L231 Difference]: Finished difference. Result has 106 places, 213 transitions, 2200 flow [2024-06-28 03:28:01,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2200, PETRI_PLACES=106, PETRI_TRANSITIONS=213} [2024-06-28 03:28:01,364 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2024-06-28 03:28:01,364 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 213 transitions, 2200 flow [2024-06-28 03:28:01,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:01,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:01,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:01,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:28:01,365 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:28:01,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:01,365 INFO L85 PathProgramCache]: Analyzing trace with hash 380614442, now seen corresponding path program 4 times [2024-06-28 03:28:01,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:01,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840209147] [2024-06-28 03:28:01,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:01,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:02,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:02,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840209147] [2024-06-28 03:28:02,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840209147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:02,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:02,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:28:02,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461153556] [2024-06-28 03:28:02,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:02,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:28:02,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:02,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:28:02,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:28:02,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:28:02,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 213 transitions, 2200 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:02,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:02,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:28:02,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:05,933 INFO L124 PetriNetUnfolderBase]: 17170/23795 cut-off events. [2024-06-28 03:28:05,933 INFO L125 PetriNetUnfolderBase]: For 268222/268234 co-relation queries the response was YES. [2024-06-28 03:28:06,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128561 conditions, 23795 events. 17170/23795 cut-off events. For 268222/268234 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 134768 event pairs, 8717 based on Foata normal form. 22/23635 useless extension candidates. Maximal degree in co-relation 128516. Up to 22863 conditions per place. [2024-06-28 03:28:06,223 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 228 selfloop transitions, 32 changer transitions 0/266 dead transitions. [2024-06-28 03:28:06,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 266 transitions, 3127 flow [2024-06-28 03:28:06,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:28:06,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:28:06,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 03:28:06,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48787061994609165 [2024-06-28 03:28:06,225 INFO L175 Difference]: Start difference. First operand has 106 places, 213 transitions, 2200 flow. Second operand 7 states and 181 transitions. [2024-06-28 03:28:06,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 266 transitions, 3127 flow [2024-06-28 03:28:06,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 266 transitions, 3053 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-06-28 03:28:06,504 INFO L231 Difference]: Finished difference. Result has 114 places, 226 transitions, 2421 flow [2024-06-28 03:28:06,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2421, PETRI_PLACES=114, PETRI_TRANSITIONS=226} [2024-06-28 03:28:06,506 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 58 predicate places. [2024-06-28 03:28:06,506 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 226 transitions, 2421 flow [2024-06-28 03:28:06,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:06,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:06,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:06,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:28:06,507 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:28:06,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:06,507 INFO L85 PathProgramCache]: Analyzing trace with hash 380623370, now seen corresponding path program 1 times [2024-06-28 03:28:06,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:06,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581595489] [2024-06-28 03:28:06,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:06,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:07,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:07,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581595489] [2024-06-28 03:28:07,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581595489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:07,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:07,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:07,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045329240] [2024-06-28 03:28:07,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:07,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:07,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:07,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:07,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:07,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:28:07,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 226 transitions, 2421 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:07,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:07,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:28:07,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:11,487 INFO L124 PetriNetUnfolderBase]: 17351/24049 cut-off events. [2024-06-28 03:28:11,488 INFO L125 PetriNetUnfolderBase]: For 294253/294265 co-relation queries the response was YES. [2024-06-28 03:28:11,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131638 conditions, 24049 events. 17351/24049 cut-off events. For 294253/294265 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 136527 event pairs, 8564 based on Foata normal form. 30/23894 useless extension candidates. Maximal degree in co-relation 131588. Up to 22875 conditions per place. [2024-06-28 03:28:11,682 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 232 selfloop transitions, 35 changer transitions 0/273 dead transitions. [2024-06-28 03:28:11,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 273 transitions, 3263 flow [2024-06-28 03:28:11,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:28:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:28:11,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 03:28:11,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067385444743935 [2024-06-28 03:28:11,683 INFO L175 Difference]: Start difference. First operand has 114 places, 226 transitions, 2421 flow. Second operand 7 states and 188 transitions. [2024-06-28 03:28:11,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 273 transitions, 3263 flow [2024-06-28 03:28:11,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 273 transitions, 3159 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 03:28:11,958 INFO L231 Difference]: Finished difference. Result has 117 places, 229 transitions, 2450 flow [2024-06-28 03:28:11,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2317, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2450, PETRI_PLACES=117, PETRI_TRANSITIONS=229} [2024-06-28 03:28:11,958 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 61 predicate places. [2024-06-28 03:28:11,959 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 229 transitions, 2450 flow [2024-06-28 03:28:11,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:11,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:11,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:11,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:28:11,959 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:28:11,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:11,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1032241636, now seen corresponding path program 1 times [2024-06-28 03:28:11,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:11,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613775678] [2024-06-28 03:28:11,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:11,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:12,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:12,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613775678] [2024-06-28 03:28:12,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613775678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:12,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:12,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:28:12,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887401367] [2024-06-28 03:28:12,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:12,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:28:12,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:12,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:28:12,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:28:12,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:28:12,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 229 transitions, 2450 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:12,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:12,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:28:12,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:15,767 INFO L124 PetriNetUnfolderBase]: 17337/24034 cut-off events. [2024-06-28 03:28:15,767 INFO L125 PetriNetUnfolderBase]: For 321082/321100 co-relation queries the response was YES. [2024-06-28 03:28:15,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134709 conditions, 24034 events. 17337/24034 cut-off events. For 321082/321100 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 136341 event pairs, 8728 based on Foata normal form. 4/23853 useless extension candidates. Maximal degree in co-relation 134658. Up to 23284 conditions per place. [2024-06-28 03:28:15,947 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 222 selfloop transitions, 14 changer transitions 0/242 dead transitions. [2024-06-28 03:28:15,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 242 transitions, 2962 flow [2024-06-28 03:28:15,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:28:15,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:28:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 03:28:15,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45660377358490567 [2024-06-28 03:28:15,949 INFO L175 Difference]: Start difference. First operand has 117 places, 229 transitions, 2450 flow. Second operand 5 states and 121 transitions. [2024-06-28 03:28:15,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 242 transitions, 2962 flow [2024-06-28 03:28:16,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 242 transitions, 2837 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 03:28:16,193 INFO L231 Difference]: Finished difference. Result has 117 places, 229 transitions, 2365 flow [2024-06-28 03:28:16,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2365, PETRI_PLACES=117, PETRI_TRANSITIONS=229} [2024-06-28 03:28:16,194 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 61 predicate places. [2024-06-28 03:28:16,194 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 229 transitions, 2365 flow [2024-06-28 03:28:16,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:16,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:16,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:16,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:28:16,194 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:28:16,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:16,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2053959031, now seen corresponding path program 1 times [2024-06-28 03:28:16,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:16,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69192998] [2024-06-28 03:28:16,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:16,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:17,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:17,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:17,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69192998] [2024-06-28 03:28:17,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69192998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:17,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:17,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:28:17,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220721558] [2024-06-28 03:28:17,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:17,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:28:17,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:17,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:28:17,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:28:17,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:28:17,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 229 transitions, 2365 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:17,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:17,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:28:17,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:20,709 INFO L124 PetriNetUnfolderBase]: 17429/24329 cut-off events. [2024-06-28 03:28:20,710 INFO L125 PetriNetUnfolderBase]: For 336714/336749 co-relation queries the response was YES. [2024-06-28 03:28:20,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136375 conditions, 24329 events. 17429/24329 cut-off events. For 336714/336749 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 138627 event pairs, 6648 based on Foata normal form. 33/24308 useless extension candidates. Maximal degree in co-relation 136323. Up to 23070 conditions per place. [2024-06-28 03:28:20,920 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 228 selfloop transitions, 69 changer transitions 0/303 dead transitions. [2024-06-28 03:28:20,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 303 transitions, 3415 flow [2024-06-28 03:28:20,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:28:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:28:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-28 03:28:20,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48218029350104824 [2024-06-28 03:28:20,922 INFO L175 Difference]: Start difference. First operand has 117 places, 229 transitions, 2365 flow. Second operand 9 states and 230 transitions. [2024-06-28 03:28:20,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 303 transitions, 3415 flow [2024-06-28 03:28:21,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 303 transitions, 3363 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:28:21,143 INFO L231 Difference]: Finished difference. Result has 124 places, 252 transitions, 2736 flow [2024-06-28 03:28:21,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2313, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2736, PETRI_PLACES=124, PETRI_TRANSITIONS=252} [2024-06-28 03:28:21,144 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 68 predicate places. [2024-06-28 03:28:21,144 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 252 transitions, 2736 flow [2024-06-28 03:28:21,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:21,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:21,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:21,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:28:21,145 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)] === [2024-06-28 03:28:21,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:21,145 INFO L85 PathProgramCache]: Analyzing trace with hash 470280037, now seen corresponding path program 2 times [2024-06-28 03:28:21,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:21,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589313564] [2024-06-28 03:28:21,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:21,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:22,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:22,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589313564] [2024-06-28 03:28:22,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589313564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:22,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:22,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:28:22,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933949948] [2024-06-28 03:28:22,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:22,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:28:22,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:22,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:28:22,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:28:22,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:28:22,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 252 transitions, 2736 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:22,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:22,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:28:22,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand