./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe009_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe009_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/safe009_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe009_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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:57:01,008 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:57:01,091 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:57:01,095 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:57:01,095 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:57:01,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:57:01,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:57:01,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:57:01,120 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:57:01,123 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:57:01,123 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:57:01,124 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:57:01,124 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:57:01,125 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:57:01,126 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:57:01,126 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:57:01,126 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:57:01,126 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:57:01,126 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:57:01,127 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:57:01,128 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:57:01,128 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:57:01,128 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:57:01,129 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:57:01,129 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:57:01,129 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:57:01,129 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:57:01,129 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:57:01,130 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:57:01,130 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:57:01,131 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:57:01,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:57:01,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:57:01,131 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:57:01,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:57:01,132 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:57:01,132 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:57:01,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:57:01,132 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:57:01,132 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:57:01,133 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:57:01,133 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:57:01,133 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:57:01,133 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:57:01,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:57:01,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:57:01,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:57:01,395 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:57:01,396 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:57:01,396 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe009_rmo.oepc.yml/witness.yml [2024-06-28 01:57:01,564 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:57:01,564 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:57:01,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_rmo.oepc.i [2024-06-28 01:57:02,545 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:57:02,771 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:57:02,771 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_rmo.oepc.i [2024-06-28 01:57:02,790 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1faa39f4/cb73aafc01974d3085c38f1af00a72c5/FLAG1f35b392d [2024-06-28 01:57:02,816 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1faa39f4/cb73aafc01974d3085c38f1af00a72c5 [2024-06-28 01:57:02,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:57:02,818 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:57:02,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:57:02,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:57:02,824 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:57:02,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:57:01" (1/2) ... [2024-06-28 01:57:02,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5792e69d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:02, skipping insertion in model container [2024-06-28 01:57:02,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:57:01" (1/2) ... [2024-06-28 01:57:02,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3137be48 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:02, skipping insertion in model container [2024-06-28 01:57:02,828 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:57:02" (2/2) ... [2024-06-28 01:57:02,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5792e69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:02, skipping insertion in model container [2024-06-28 01:57:02,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:57:02" (2/2) ... [2024-06-28 01:57:02,828 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:57:03,058 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:57:03,059 INFO L97 edCorrectnessWitness]: Location invariant before [L840-L840] (((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-28 01:57:03,059 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-28 01:57:03,060 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] (((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-28 01:57:03,060 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:57:03,060 INFO L106 edCorrectnessWitness]: ghost_update [L835-L835] multithreaded = 1; [2024-06-28 01:57:03,097 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:57:03,229 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_rmo.oepc.i[993,1006] [2024-06-28 01:57:03,379 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:57:03,391 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:57:03,421 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_rmo.oepc.i[993,1006] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:57:03,540 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:57:03,580 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:57:03,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:03 WrapperNode [2024-06-28 01:57:03,581 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:57:03,581 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:57:03,582 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:57:03,582 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:57:03,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:03" (1/1) ... [2024-06-28 01:57:03,601 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:03" (1/1) ... [2024-06-28 01:57:03,635 INFO L138 Inliner]: procedures = 175, calls = 98, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 276 [2024-06-28 01:57:03,635 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:57:03,636 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:57:03,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:57:03,636 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:57:03,645 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:03" (1/1) ... [2024-06-28 01:57:03,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:03" (1/1) ... [2024-06-28 01:57:03,649 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:03" (1/1) ... [2024-06-28 01:57:03,665 INFO L175 MemorySlicer]: Split 60 memory accesses to 2 slices as follows [2, 58]. 97 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 9 writes are split as follows [0, 9]. [2024-06-28 01:57:03,666 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:03" (1/1) ... [2024-06-28 01:57:03,666 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:03" (1/1) ... [2024-06-28 01:57:03,678 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:03" (1/1) ... [2024-06-28 01:57:03,681 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:03" (1/1) ... [2024-06-28 01:57:03,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:03" (1/1) ... [2024-06-28 01:57:03,685 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:03" (1/1) ... [2024-06-28 01:57:03,689 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:57:03,690 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:57:03,690 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:57:03,690 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:57:03,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:03" (1/1) ... [2024-06-28 01:57:03,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:57:03,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:57:03,713 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 01:57:03,730 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 01:57:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:57:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:57:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:57:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:57:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:57:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:57:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:57:03,743 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:57:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:57:03,743 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:57:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:57:03,743 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:57:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:57:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:57:03,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:57:03,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:57:03,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:57:03,745 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 01:57:03,859 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:57:03,862 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:57:04,416 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:57:04,416 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:57:04,865 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:57:04,865 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:57:04,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:57:04 BoogieIcfgContainer [2024-06-28 01:57:04,866 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:57:04,868 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:57:04,868 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:57:04,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:57:04,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:57:01" (1/4) ... [2024-06-28 01:57:04,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8efd284 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:57:04, skipping insertion in model container [2024-06-28 01:57:04,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:57:02" (2/4) ... [2024-06-28 01:57:04,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8efd284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:57:04, skipping insertion in model container [2024-06-28 01:57:04,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:03" (3/4) ... [2024-06-28 01:57:04,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8efd284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:57:04, skipping insertion in model container [2024-06-28 01:57:04,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:57:04" (4/4) ... [2024-06-28 01:57:04,874 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_rmo.oepc.i [2024-06-28 01:57:04,887 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:57:04,887 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:57:04,888 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:57:04,938 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:57:04,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:57:05,010 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-28 01:57:05,011 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:57:05,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-28 01:57:05,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:57:05,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 40 transitions, 89 flow [2024-06-28 01:57:05,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:57:05,044 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;@5f201230, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:57:05,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:57:05,050 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:57:05,051 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 01:57:05,051 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:57:05,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:05,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:57:05,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:05,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:05,056 INFO L85 PathProgramCache]: Analyzing trace with hash 817474927, now seen corresponding path program 1 times [2024-06-28 01:57:05,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:05,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077355393] [2024-06-28 01:57:05,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:05,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:06,818 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 01:57:06,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:06,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077355393] [2024-06-28 01:57:06,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077355393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:06,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:06,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:57:06,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751870756] [2024-06-28 01:57:06,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:06,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:57:06,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:06,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:57:06,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:57:06,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:57:06,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 01:57:06,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:06,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:57:06,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:07,681 INFO L124 PetriNetUnfolderBase]: 2790/4333 cut-off events. [2024-06-28 01:57:07,681 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 01:57:07,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8463 conditions, 4333 events. 2790/4333 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 24073 event pairs, 1780 based on Foata normal form. 0/4177 useless extension candidates. Maximal degree in co-relation 8451. Up to 4049 conditions per place. [2024-06-28 01:57:07,700 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 44 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-28 01:57:07,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 227 flow [2024-06-28 01:57:07,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:57:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:57:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-06-28 01:57:07,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6376811594202898 [2024-06-28 01:57:07,710 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 89 flow. Second operand 3 states and 88 transitions. [2024-06-28 01:57:07,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 227 flow [2024-06-28 01:57:07,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 57 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:57:07,714 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 123 flow [2024-06-28 01:57:07,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-06-28 01:57:07,718 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2024-06-28 01:57:07,718 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 123 flow [2024-06-28 01:57:07,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 01:57:07,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:07,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:07,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:57:07,719 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:07,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:07,719 INFO L85 PathProgramCache]: Analyzing trace with hash -385181004, now seen corresponding path program 1 times [2024-06-28 01:57:07,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:07,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225182150] [2024-06-28 01:57:07,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:07,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:09,616 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 01:57:09,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:09,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225182150] [2024-06-28 01:57:09,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225182150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:09,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:09,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:57:09,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200297393] [2024-06-28 01:57:09,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:09,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:57:09,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:09,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:57:09,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:57:09,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:57:09,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 01:57:09,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:09,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:57:09,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:10,430 INFO L124 PetriNetUnfolderBase]: 2784/4127 cut-off events. [2024-06-28 01:57:10,431 INFO L125 PetriNetUnfolderBase]: For 705/709 co-relation queries the response was YES. [2024-06-28 01:57:10,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9274 conditions, 4127 events. 2784/4127 cut-off events. For 705/709 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 21803 event pairs, 1304 based on Foata normal form. 5/4129 useless extension candidates. Maximal degree in co-relation 9262. Up to 4007 conditions per place. [2024-06-28 01:57:10,451 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 61 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2024-06-28 01:57:10,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 355 flow [2024-06-28 01:57:10,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:57:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:57:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-28 01:57:10,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6467391304347826 [2024-06-28 01:57:10,455 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 123 flow. Second operand 4 states and 119 transitions. [2024-06-28 01:57:10,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 355 flow [2024-06-28 01:57:10,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:10,459 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 186 flow [2024-06-28 01:57:10,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-06-28 01:57:10,461 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2024-06-28 01:57:10,462 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 186 flow [2024-06-28 01:57:10,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 01:57:10,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:10,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:10,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:57:10,466 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:10,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:10,466 INFO L85 PathProgramCache]: Analyzing trace with hash 944292529, now seen corresponding path program 1 times [2024-06-28 01:57:10,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:10,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533116426] [2024-06-28 01:57:10,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:10,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:12,825 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 01:57:12,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:12,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533116426] [2024-06-28 01:57:12,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533116426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:12,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:12,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:57:12,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087798708] [2024-06-28 01:57:12,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:12,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:57:12,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:12,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:57:12,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:57:12,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:57:12,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 01:57:12,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:12,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:57:12,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:13,954 INFO L124 PetriNetUnfolderBase]: 3373/4966 cut-off events. [2024-06-28 01:57:13,954 INFO L125 PetriNetUnfolderBase]: For 2612/2612 co-relation queries the response was YES. [2024-06-28 01:57:13,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12460 conditions, 4966 events. 3373/4966 cut-off events. For 2612/2612 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 26173 event pairs, 1214 based on Foata normal form. 3/4967 useless extension candidates. Maximal degree in co-relation 12445. Up to 4808 conditions per place. [2024-06-28 01:57:13,977 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 87 selfloop transitions, 12 changer transitions 0/106 dead transitions. [2024-06-28 01:57:13,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 106 transitions, 548 flow [2024-06-28 01:57:13,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:57:13,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:57:13,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-06-28 01:57:13,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-06-28 01:57:13,980 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 186 flow. Second operand 5 states and 145 transitions. [2024-06-28 01:57:13,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 106 transitions, 548 flow [2024-06-28 01:57:13,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 106 transitions, 548 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 01:57:13,985 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 305 flow [2024-06-28 01:57:13,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=305, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2024-06-28 01:57:13,985 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 11 predicate places. [2024-06-28 01:57:13,985 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 305 flow [2024-06-28 01:57:13,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 01:57:13,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:13,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:13,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:57:13,987 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:13,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:13,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1348355882, now seen corresponding path program 1 times [2024-06-28 01:57:13,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:13,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188331384] [2024-06-28 01:57:13,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:13,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:16,032 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 01:57:16,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:16,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188331384] [2024-06-28 01:57:16,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188331384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:16,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:16,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:57:16,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248266367] [2024-06-28 01:57:16,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:16,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:57:16,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:16,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:57:16,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:57:16,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:57:16,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 305 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:16,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:16,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:57:16,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:17,374 INFO L124 PetriNetUnfolderBase]: 3364/4951 cut-off events. [2024-06-28 01:57:17,375 INFO L125 PetriNetUnfolderBase]: For 4072/4072 co-relation queries the response was YES. [2024-06-28 01:57:17,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13554 conditions, 4951 events. 3364/4951 cut-off events. For 4072/4072 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 25992 event pairs, 847 based on Foata normal form. 6/4955 useless extension candidates. Maximal degree in co-relation 13534. Up to 4731 conditions per place. [2024-06-28 01:57:17,405 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 98 selfloop transitions, 14 changer transitions 0/119 dead transitions. [2024-06-28 01:57:17,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 119 transitions, 669 flow [2024-06-28 01:57:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:17,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:17,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-28 01:57:17,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6123188405797102 [2024-06-28 01:57:17,409 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 305 flow. Second operand 6 states and 169 transitions. [2024-06-28 01:57:17,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 119 transitions, 669 flow [2024-06-28 01:57:17,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 119 transitions, 667 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 01:57:17,416 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 346 flow [2024-06-28 01:57:17,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=346, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-06-28 01:57:17,418 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 16 predicate places. [2024-06-28 01:57:17,418 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 346 flow [2024-06-28 01:57:17,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:17,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:17,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:17,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:57:17,419 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:17,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:17,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1780816546, now seen corresponding path program 1 times [2024-06-28 01:57:17,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:17,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586971840] [2024-06-28 01:57:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:17,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:19,024 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 01:57:19,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:19,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586971840] [2024-06-28 01:57:19,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586971840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:19,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:19,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:57:19,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039051194] [2024-06-28 01:57:19,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:19,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:57:19,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:19,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:57:19,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:57:19,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:19,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 01:57:19,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:19,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:19,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:20,456 INFO L124 PetriNetUnfolderBase]: 3434/5284 cut-off events. [2024-06-28 01:57:20,456 INFO L125 PetriNetUnfolderBase]: For 6070/6076 co-relation queries the response was YES. [2024-06-28 01:57:20,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14746 conditions, 5284 events. 3434/5284 cut-off events. For 6070/6076 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 29372 event pairs, 1310 based on Foata normal form. 12/5293 useless extension candidates. Maximal degree in co-relation 14722. Up to 4704 conditions per place. [2024-06-28 01:57:20,478 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 79 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-06-28 01:57:20,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 101 transitions, 661 flow [2024-06-28 01:57:20,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:57:20,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:57:20,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-28 01:57:20,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5391304347826087 [2024-06-28 01:57:20,486 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 346 flow. Second operand 5 states and 124 transitions. [2024-06-28 01:57:20,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 101 transitions, 661 flow [2024-06-28 01:57:20,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 101 transitions, 628 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:57:20,494 INFO L231 Difference]: Finished difference. Result has 68 places, 72 transitions, 425 flow [2024-06-28 01:57:20,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=425, PETRI_PLACES=68, PETRI_TRANSITIONS=72} [2024-06-28 01:57:20,496 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 18 predicate places. [2024-06-28 01:57:20,496 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 72 transitions, 425 flow [2024-06-28 01:57:20,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 01:57:20,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:20,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:20,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:57:20,497 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:20,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:20,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2120322737, now seen corresponding path program 1 times [2024-06-28 01:57:20,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:20,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494780853] [2024-06-28 01:57:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:20,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:23,299 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 01:57:23,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:23,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494780853] [2024-06-28 01:57:23,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494780853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:23,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:23,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:23,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280154594] [2024-06-28 01:57:23,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:23,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:23,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:23,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:23,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:23,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:23,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 72 transitions, 425 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 01:57:23,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:23,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:23,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:24,896 INFO L124 PetriNetUnfolderBase]: 3465/5105 cut-off events. [2024-06-28 01:57:24,896 INFO L125 PetriNetUnfolderBase]: For 8777/8786 co-relation queries the response was YES. [2024-06-28 01:57:24,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16396 conditions, 5105 events. 3465/5105 cut-off events. For 8777/8786 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 26893 event pairs, 1065 based on Foata normal form. 8/5110 useless extension candidates. Maximal degree in co-relation 16369. Up to 4824 conditions per place. [2024-06-28 01:57:24,923 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 103 selfloop transitions, 26 changer transitions 0/135 dead transitions. [2024-06-28 01:57:24,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 135 transitions, 891 flow [2024-06-28 01:57:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:24,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 01:57:24,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5527950310559007 [2024-06-28 01:57:24,925 INFO L175 Difference]: Start difference. First operand has 68 places, 72 transitions, 425 flow. Second operand 7 states and 178 transitions. [2024-06-28 01:57:24,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 135 transitions, 891 flow [2024-06-28 01:57:24,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 135 transitions, 875 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:24,935 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 523 flow [2024-06-28 01:57:24,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=523, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2024-06-28 01:57:24,937 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 24 predicate places. [2024-06-28 01:57:24,937 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 523 flow [2024-06-28 01:57:24,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 01:57:24,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:24,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:24,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:57:24,938 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:24,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:24,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2120202581, now seen corresponding path program 1 times [2024-06-28 01:57:24,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:24,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452274571] [2024-06-28 01:57:24,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:24,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:27,896 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 01:57:27,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:27,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452274571] [2024-06-28 01:57:27,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452274571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:27,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:27,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:27,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390206456] [2024-06-28 01:57:27,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:27,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:27,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:27,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:27,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:27,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:27,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 523 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 01:57:27,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:27,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:27,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:29,688 INFO L124 PetriNetUnfolderBase]: 4094/6016 cut-off events. [2024-06-28 01:57:29,688 INFO L125 PetriNetUnfolderBase]: For 13015/13024 co-relation queries the response was YES. [2024-06-28 01:57:29,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20135 conditions, 6016 events. 4094/6016 cut-off events. For 13015/13024 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 32018 event pairs, 1096 based on Foata normal form. 14/6027 useless extension candidates. Maximal degree in co-relation 20105. Up to 5284 conditions per place. [2024-06-28 01:57:29,714 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 131 selfloop transitions, 36 changer transitions 0/173 dead transitions. [2024-06-28 01:57:29,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 173 transitions, 1202 flow [2024-06-28 01:57:29,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:57:29,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:57:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 01:57:29,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531400966183575 [2024-06-28 01:57:29,716 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 523 flow. Second operand 9 states and 229 transitions. [2024-06-28 01:57:29,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 173 transitions, 1202 flow [2024-06-28 01:57:29,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 173 transitions, 1157 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:57:29,729 INFO L231 Difference]: Finished difference. Result has 82 places, 96 transitions, 708 flow [2024-06-28 01:57:29,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=708, PETRI_PLACES=82, PETRI_TRANSITIONS=96} [2024-06-28 01:57:29,730 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 32 predicate places. [2024-06-28 01:57:29,730 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 96 transitions, 708 flow [2024-06-28 01:57:29,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 01:57:29,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:29,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:29,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:57:29,731 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:29,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:29,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1790379529, now seen corresponding path program 2 times [2024-06-28 01:57:29,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:29,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521618238] [2024-06-28 01:57:29,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:29,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:32,319 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 01:57:32,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:32,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521618238] [2024-06-28 01:57:32,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521618238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:32,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:32,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:32,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542194118] [2024-06-28 01:57:32,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:32,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:32,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:32,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:32,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:32,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:32,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 96 transitions, 708 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 01:57:32,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:32,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:32,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:34,016 INFO L124 PetriNetUnfolderBase]: 4125/6047 cut-off events. [2024-06-28 01:57:34,016 INFO L125 PetriNetUnfolderBase]: For 19467/19476 co-relation queries the response was YES. [2024-06-28 01:57:34,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23161 conditions, 6047 events. 4125/6047 cut-off events. For 19467/19476 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 32177 event pairs, 1132 based on Foata normal form. 8/6052 useless extension candidates. Maximal degree in co-relation 23127. Up to 5767 conditions per place. [2024-06-28 01:57:34,047 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 120 selfloop transitions, 24 changer transitions 0/150 dead transitions. [2024-06-28 01:57:34,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 150 transitions, 1164 flow [2024-06-28 01:57:34,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:34,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:34,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:57:34,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531055900621118 [2024-06-28 01:57:34,049 INFO L175 Difference]: Start difference. First operand has 82 places, 96 transitions, 708 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:57:34,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 150 transitions, 1164 flow [2024-06-28 01:57:34,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 150 transitions, 1093 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 01:57:34,077 INFO L231 Difference]: Finished difference. Result has 86 places, 99 transitions, 723 flow [2024-06-28 01:57:34,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=723, PETRI_PLACES=86, PETRI_TRANSITIONS=99} [2024-06-28 01:57:34,077 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2024-06-28 01:57:34,077 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 99 transitions, 723 flow [2024-06-28 01:57:34,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 01:57:34,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:34,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:34,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:57:34,078 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:34,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:34,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1944691905, now seen corresponding path program 2 times [2024-06-28 01:57:34,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:34,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714761552] [2024-06-28 01:57:34,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:34,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:36,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:36,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714761552] [2024-06-28 01:57:36,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714761552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:36,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:36,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:36,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181650500] [2024-06-28 01:57:36,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:36,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:36,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:36,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:36,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:36,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:36,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 99 transitions, 723 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 01:57:36,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:36,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:36,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:37,888 INFO L124 PetriNetUnfolderBase]: 4453/6541 cut-off events. [2024-06-28 01:57:37,889 INFO L125 PetriNetUnfolderBase]: For 22332/22406 co-relation queries the response was YES. [2024-06-28 01:57:37,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24679 conditions, 6541 events. 4453/6541 cut-off events. For 22332/22406 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 35320 event pairs, 1159 based on Foata normal form. 40/6574 useless extension candidates. Maximal degree in co-relation 24643. Up to 4909 conditions per place. [2024-06-28 01:57:37,919 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 115 selfloop transitions, 43 changer transitions 0/164 dead transitions. [2024-06-28 01:57:37,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 164 transitions, 1363 flow [2024-06-28 01:57:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:37,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-28 01:57:37,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688405797101449 [2024-06-28 01:57:37,921 INFO L175 Difference]: Start difference. First operand has 86 places, 99 transitions, 723 flow. Second operand 6 states and 157 transitions. [2024-06-28 01:57:37,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 164 transitions, 1363 flow [2024-06-28 01:57:37,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 164 transitions, 1311 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:57:37,944 INFO L231 Difference]: Finished difference. Result has 89 places, 115 transitions, 951 flow [2024-06-28 01:57:37,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=951, PETRI_PLACES=89, PETRI_TRANSITIONS=115} [2024-06-28 01:57:37,945 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2024-06-28 01:57:37,945 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 115 transitions, 951 flow [2024-06-28 01:57:37,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 01:57:37,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:37,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:37,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:57:37,946 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:37,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:37,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1910967315, now seen corresponding path program 3 times [2024-06-28 01:57:37,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:37,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934483887] [2024-06-28 01:57:37,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:37,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:40,324 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 01:57:40,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:40,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934483887] [2024-06-28 01:57:40,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934483887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:40,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:40,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:40,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981573809] [2024-06-28 01:57:40,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:40,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:40,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:40,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:40,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:40,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:40,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 115 transitions, 951 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 01:57:40,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:40,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:40,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:41,984 INFO L124 PetriNetUnfolderBase]: 4439/6527 cut-off events. [2024-06-28 01:57:41,985 INFO L125 PetriNetUnfolderBase]: For 28493/28502 co-relation queries the response was YES. [2024-06-28 01:57:41,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27860 conditions, 6527 events. 4439/6527 cut-off events. For 28493/28502 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 35303 event pairs, 1137 based on Foata normal form. 14/6538 useless extension candidates. Maximal degree in co-relation 27821. Up to 5701 conditions per place. [2024-06-28 01:57:42,018 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 122 selfloop transitions, 40 changer transitions 0/168 dead transitions. [2024-06-28 01:57:42,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 168 transitions, 1456 flow [2024-06-28 01:57:42,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:57:42,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-28 01:57:42,020 INFO L175 Difference]: Start difference. First operand has 89 places, 115 transitions, 951 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:57:42,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 168 transitions, 1456 flow [2024-06-28 01:57:42,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 168 transitions, 1418 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:42,056 INFO L231 Difference]: Finished difference. Result has 96 places, 118 transitions, 1073 flow [2024-06-28 01:57:42,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1073, PETRI_PLACES=96, PETRI_TRANSITIONS=118} [2024-06-28 01:57:42,057 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2024-06-28 01:57:42,057 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 118 transitions, 1073 flow [2024-06-28 01:57:42,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 01:57:42,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:42,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:42,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:57:42,058 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:42,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:42,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1944929241, now seen corresponding path program 3 times [2024-06-28 01:57:42,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:42,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608447097] [2024-06-28 01:57:42,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:42,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:44,456 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 01:57:44,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:44,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608447097] [2024-06-28 01:57:44,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608447097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:44,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:44,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:44,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234976926] [2024-06-28 01:57:44,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:44,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:44,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:44,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:44,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:44,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:44,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 118 transitions, 1073 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 01:57:44,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:44,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:44,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:46,207 INFO L124 PetriNetUnfolderBase]: 4434/6496 cut-off events. [2024-06-28 01:57:46,208 INFO L125 PetriNetUnfolderBase]: For 28849/28858 co-relation queries the response was YES. [2024-06-28 01:57:46,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28172 conditions, 6496 events. 4434/6496 cut-off events. For 28849/28858 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 34922 event pairs, 1216 based on Foata normal form. 8/6501 useless extension candidates. Maximal degree in co-relation 28129. Up to 6132 conditions per place. [2024-06-28 01:57:46,243 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 127 selfloop transitions, 29 changer transitions 0/162 dead transitions. [2024-06-28 01:57:46,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 162 transitions, 1505 flow [2024-06-28 01:57:46,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:46,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:46,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 01:57:46,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2024-06-28 01:57:46,245 INFO L175 Difference]: Start difference. First operand has 96 places, 118 transitions, 1073 flow. Second operand 6 states and 152 transitions. [2024-06-28 01:57:46,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 162 transitions, 1505 flow [2024-06-28 01:57:46,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 162 transitions, 1432 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:57:46,287 INFO L231 Difference]: Finished difference. Result has 98 places, 118 transitions, 1074 flow [2024-06-28 01:57:46,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1074, PETRI_PLACES=98, PETRI_TRANSITIONS=118} [2024-06-28 01:57:46,287 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 48 predicate places. [2024-06-28 01:57:46,288 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 118 transitions, 1074 flow [2024-06-28 01:57:46,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 01:57:46,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:46,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:46,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:57:46,288 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:46,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:46,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1944682977, now seen corresponding path program 1 times [2024-06-28 01:57:46,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:46,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421148963] [2024-06-28 01:57:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:46,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:49,068 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 01:57:49,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:49,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421148963] [2024-06-28 01:57:49,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421148963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:49,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:49,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:49,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547865043] [2024-06-28 01:57:49,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:49,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:49,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:49,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:49,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:49,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:49,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 118 transitions, 1074 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:49,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:49,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:49,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:50,630 INFO L124 PetriNetUnfolderBase]: 4610/7006 cut-off events. [2024-06-28 01:57:50,630 INFO L125 PetriNetUnfolderBase]: For 31897/31906 co-relation queries the response was YES. [2024-06-28 01:57:50,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29070 conditions, 7006 events. 4610/7006 cut-off events. For 31897/31906 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 39492 event pairs, 1285 based on Foata normal form. 22/7025 useless extension candidates. Maximal degree in co-relation 29026. Up to 6082 conditions per place. [2024-06-28 01:57:50,676 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 140 selfloop transitions, 19 changer transitions 0/165 dead transitions. [2024-06-28 01:57:50,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 165 transitions, 1567 flow [2024-06-28 01:57:50,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:50,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:50,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 01:57:50,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2024-06-28 01:57:50,678 INFO L175 Difference]: Start difference. First operand has 98 places, 118 transitions, 1074 flow. Second operand 6 states and 152 transitions. [2024-06-28 01:57:50,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 165 transitions, 1567 flow [2024-06-28 01:57:50,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 165 transitions, 1503 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:57:50,725 INFO L231 Difference]: Finished difference. Result has 99 places, 121 transitions, 1105 flow [2024-06-28 01:57:50,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1105, PETRI_PLACES=99, PETRI_TRANSITIONS=121} [2024-06-28 01:57:50,726 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 49 predicate places. [2024-06-28 01:57:50,726 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 121 transitions, 1105 flow [2024-06-28 01:57:50,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:50,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:50,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:50,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:57:50,727 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:50,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:50,727 INFO L85 PathProgramCache]: Analyzing trace with hash -336527288, now seen corresponding path program 1 times [2024-06-28 01:57:50,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:50,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070373391] [2024-06-28 01:57:50,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:50,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:53,226 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 01:57:53,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:53,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070373391] [2024-06-28 01:57:53,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070373391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:53,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:53,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:53,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170031978] [2024-06-28 01:57:53,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:53,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:53,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:53,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:53,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:53,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:53,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 121 transitions, 1105 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:53,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:53,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:53,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:55,532 INFO L124 PetriNetUnfolderBase]: 5208/7716 cut-off events. [2024-06-28 01:57:55,532 INFO L125 PetriNetUnfolderBase]: For 37663/37672 co-relation queries the response was YES. [2024-06-28 01:57:55,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32956 conditions, 7716 events. 5208/7716 cut-off events. For 37663/37672 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 43272 event pairs, 1256 based on Foata normal form. 14/7727 useless extension candidates. Maximal degree in co-relation 32911. Up to 5933 conditions per place. [2024-06-28 01:57:55,570 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 172 selfloop transitions, 63 changer transitions 0/241 dead transitions. [2024-06-28 01:57:55,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 241 transitions, 2093 flow [2024-06-28 01:57:55,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:57:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:57:55,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 288 transitions. [2024-06-28 01:57:55,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691699604743083 [2024-06-28 01:57:55,573 INFO L175 Difference]: Start difference. First operand has 99 places, 121 transitions, 1105 flow. Second operand 11 states and 288 transitions. [2024-06-28 01:57:55,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 241 transitions, 2093 flow [2024-06-28 01:57:55,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 241 transitions, 2032 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 01:57:55,626 INFO L231 Difference]: Finished difference. Result has 108 places, 136 transitions, 1357 flow [2024-06-28 01:57:55,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1357, PETRI_PLACES=108, PETRI_TRANSITIONS=136} [2024-06-28 01:57:55,627 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 58 predicate places. [2024-06-28 01:57:55,627 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 136 transitions, 1357 flow [2024-06-28 01:57:55,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:55,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:55,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:55,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:57:55,628 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:55,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:55,628 INFO L85 PathProgramCache]: Analyzing trace with hash -332802638, now seen corresponding path program 2 times [2024-06-28 01:57:55,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:55,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672945978] [2024-06-28 01:57:55,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:55,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:58,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:58,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672945978] [2024-06-28 01:57:58,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672945978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:58,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:58,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:58,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029319474] [2024-06-28 01:57:58,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:58,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:58,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:58,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:58,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:58,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:58,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 136 transitions, 1357 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:58,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:58,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:58,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:00,943 INFO L124 PetriNetUnfolderBase]: 5707/8407 cut-off events. [2024-06-28 01:58:00,943 INFO L125 PetriNetUnfolderBase]: For 53122/53131 co-relation queries the response was YES. [2024-06-28 01:58:00,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39095 conditions, 8407 events. 5707/8407 cut-off events. For 53122/53131 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 47315 event pairs, 1287 based on Foata normal form. 14/8418 useless extension candidates. Maximal degree in co-relation 39047. Up to 6952 conditions per place. [2024-06-28 01:58:01,002 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 204 selfloop transitions, 58 changer transitions 0/268 dead transitions. [2024-06-28 01:58:01,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 268 transitions, 2526 flow [2024-06-28 01:58:01,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:58:01,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:58:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 313 transitions. [2024-06-28 01:58:01,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5670289855072463 [2024-06-28 01:58:01,009 INFO L175 Difference]: Start difference. First operand has 108 places, 136 transitions, 1357 flow. Second operand 12 states and 313 transitions. [2024-06-28 01:58:01,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 268 transitions, 2526 flow [2024-06-28 01:58:01,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 268 transitions, 2359 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-28 01:58:01,102 INFO L231 Difference]: Finished difference. Result has 115 places, 154 transitions, 1578 flow [2024-06-28 01:58:01,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1578, PETRI_PLACES=115, PETRI_TRANSITIONS=154} [2024-06-28 01:58:01,103 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 65 predicate places. [2024-06-28 01:58:01,103 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 154 transitions, 1578 flow [2024-06-28 01:58:01,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:01,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:01,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:01,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:58:01,104 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:01,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:01,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1301775106, now seen corresponding path program 3 times [2024-06-28 01:58:01,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:01,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445933851] [2024-06-28 01:58:01,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:01,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:03,985 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 01:58:03,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:03,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445933851] [2024-06-28 01:58:03,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445933851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:03,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:03,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:03,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317517945] [2024-06-28 01:58:03,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:03,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:03,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:03,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:03,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:03,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:03,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 154 transitions, 1578 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:03,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:03,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:03,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:06,246 INFO L124 PetriNetUnfolderBase]: 5693/8399 cut-off events. [2024-06-28 01:58:06,246 INFO L125 PetriNetUnfolderBase]: For 58997/59006 co-relation queries the response was YES. [2024-06-28 01:58:06,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40112 conditions, 8399 events. 5693/8399 cut-off events. For 58997/59006 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 47374 event pairs, 1321 based on Foata normal form. 14/8410 useless extension candidates. Maximal degree in co-relation 40061. Up to 6946 conditions per place. [2024-06-28 01:58:06,308 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 185 selfloop transitions, 55 changer transitions 0/246 dead transitions. [2024-06-28 01:58:06,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 246 transitions, 2387 flow [2024-06-28 01:58:06,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:58:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:58:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-28 01:58:06,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5695652173913044 [2024-06-28 01:58:06,310 INFO L175 Difference]: Start difference. First operand has 115 places, 154 transitions, 1578 flow. Second operand 10 states and 262 transitions. [2024-06-28 01:58:06,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 246 transitions, 2387 flow [2024-06-28 01:58:06,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 246 transitions, 2239 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-28 01:58:06,433 INFO L231 Difference]: Finished difference. Result has 118 places, 154 transitions, 1551 flow [2024-06-28 01:58:06,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1551, PETRI_PLACES=118, PETRI_TRANSITIONS=154} [2024-06-28 01:58:06,434 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 68 predicate places. [2024-06-28 01:58:06,434 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 154 transitions, 1551 flow [2024-06-28 01:58:06,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:06,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:06,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:06,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:58:06,435 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:06,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:06,435 INFO L85 PathProgramCache]: Analyzing trace with hash -163055706, now seen corresponding path program 4 times [2024-06-28 01:58:06,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:06,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340632667] [2024-06-28 01:58:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:06,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:08,845 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 01:58:08,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:08,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340632667] [2024-06-28 01:58:08,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340632667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:08,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:08,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:08,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287920462] [2024-06-28 01:58:08,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:08,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:08,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:08,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:08,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:08,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:08,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 154 transitions, 1551 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:08,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:08,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:08,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:11,186 INFO L124 PetriNetUnfolderBase]: 6167/9131 cut-off events. [2024-06-28 01:58:11,187 INFO L125 PetriNetUnfolderBase]: For 65759/65842 co-relation queries the response was YES. [2024-06-28 01:58:11,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43443 conditions, 9131 events. 6167/9131 cut-off events. For 65759/65842 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 52441 event pairs, 1172 based on Foata normal form. 49/9173 useless extension candidates. Maximal degree in co-relation 43390. Up to 5790 conditions per place. [2024-06-28 01:58:11,364 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 173 selfloop transitions, 85 changer transitions 0/264 dead transitions. [2024-06-28 01:58:11,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 264 transitions, 2737 flow [2024-06-28 01:58:11,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:11,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-06-28 01:58:11,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-06-28 01:58:11,367 INFO L175 Difference]: Start difference. First operand has 118 places, 154 transitions, 1551 flow. Second operand 9 states and 246 transitions. [2024-06-28 01:58:11,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 264 transitions, 2737 flow [2024-06-28 01:58:11,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 264 transitions, 2627 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:58:11,466 INFO L231 Difference]: Finished difference. Result has 119 places, 170 transitions, 1838 flow [2024-06-28 01:58:11,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1838, PETRI_PLACES=119, PETRI_TRANSITIONS=170} [2024-06-28 01:58:11,467 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 69 predicate places. [2024-06-28 01:58:11,467 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 170 transitions, 1838 flow [2024-06-28 01:58:11,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:11,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:11,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:11,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:58:11,468 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:11,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:11,468 INFO L85 PathProgramCache]: Analyzing trace with hash -163257516, now seen corresponding path program 5 times [2024-06-28 01:58:11,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:11,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630551643] [2024-06-28 01:58:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:11,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:14,059 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 01:58:14,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:14,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630551643] [2024-06-28 01:58:14,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630551643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:14,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:14,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:14,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759174126] [2024-06-28 01:58:14,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:14,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:14,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:14,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:14,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:14,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:14,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 170 transitions, 1838 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:14,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:14,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:14,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:16,472 INFO L124 PetriNetUnfolderBase]: 6733/9971 cut-off events. [2024-06-28 01:58:16,473 INFO L125 PetriNetUnfolderBase]: For 81322/81331 co-relation queries the response was YES. [2024-06-28 01:58:16,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51154 conditions, 9971 events. 6733/9971 cut-off events. For 81322/81331 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 58154 event pairs, 1404 based on Foata normal form. 14/9982 useless extension candidates. Maximal degree in co-relation 51099. Up to 7798 conditions per place. [2024-06-28 01:58:16,564 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 190 selfloop transitions, 81 changer transitions 0/277 dead transitions. [2024-06-28 01:58:16,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 277 transitions, 3066 flow [2024-06-28 01:58:16,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:16,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:16,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-28 01:58:16,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5676328502415459 [2024-06-28 01:58:16,567 INFO L175 Difference]: Start difference. First operand has 119 places, 170 transitions, 1838 flow. Second operand 9 states and 235 transitions. [2024-06-28 01:58:16,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 277 transitions, 3066 flow [2024-06-28 01:58:16,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 277 transitions, 2916 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 01:58:16,771 INFO L231 Difference]: Finished difference. Result has 126 places, 197 transitions, 2333 flow [2024-06-28 01:58:16,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1717, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2333, PETRI_PLACES=126, PETRI_TRANSITIONS=197} [2024-06-28 01:58:16,772 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 76 predicate places. [2024-06-28 01:58:16,772 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 197 transitions, 2333 flow [2024-06-28 01:58:16,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:16,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:16,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:16,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:58:16,773 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:16,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:16,774 INFO L85 PathProgramCache]: Analyzing trace with hash -163263096, now seen corresponding path program 6 times [2024-06-28 01:58:16,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:16,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745333594] [2024-06-28 01:58:16,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:16,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:19,341 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 01:58:19,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:19,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745333594] [2024-06-28 01:58:19,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745333594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:19,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:19,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:19,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678630468] [2024-06-28 01:58:19,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:19,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:19,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:19,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:19,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:19,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:19,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 197 transitions, 2333 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:19,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:19,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:19,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:21,789 INFO L124 PetriNetUnfolderBase]: 6719/9953 cut-off events. [2024-06-28 01:58:21,789 INFO L125 PetriNetUnfolderBase]: For 81679/81688 co-relation queries the response was YES. [2024-06-28 01:58:21,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52842 conditions, 9953 events. 6719/9953 cut-off events. For 81679/81688 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 58045 event pairs, 1474 based on Foata normal form. 14/9964 useless extension candidates. Maximal degree in co-relation 52783. Up to 7792 conditions per place. [2024-06-28 01:58:21,866 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 197 selfloop transitions, 77 changer transitions 0/280 dead transitions. [2024-06-28 01:58:21,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 280 transitions, 3185 flow [2024-06-28 01:58:21,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:21,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-28 01:58:21,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772946859903382 [2024-06-28 01:58:21,868 INFO L175 Difference]: Start difference. First operand has 126 places, 197 transitions, 2333 flow. Second operand 9 states and 239 transitions. [2024-06-28 01:58:21,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 280 transitions, 3185 flow [2024-06-28 01:58:22,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 280 transitions, 3092 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 01:58:22,141 INFO L231 Difference]: Finished difference. Result has 132 places, 198 transitions, 2455 flow [2024-06-28 01:58:22,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2240, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2455, PETRI_PLACES=132, PETRI_TRANSITIONS=198} [2024-06-28 01:58:22,141 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 82 predicate places. [2024-06-28 01:58:22,141 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 198 transitions, 2455 flow [2024-06-28 01:58:22,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:22,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:22,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:22,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:58:22,142 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:22,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:22,142 INFO L85 PathProgramCache]: Analyzing trace with hash -234489362, now seen corresponding path program 1 times [2024-06-28 01:58:22,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:22,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784869496] [2024-06-28 01:58:22,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:22,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:23,387 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 01:58:23,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:23,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784869496] [2024-06-28 01:58:23,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784869496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:23,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:23,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:58:23,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270942587] [2024-06-28 01:58:23,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:23,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:58:23,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:23,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:58:23,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:58:23,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:58:23,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 198 transitions, 2455 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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 01:58:23,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:23,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:58:23,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:25,157 INFO L124 PetriNetUnfolderBase]: 6440/9757 cut-off events. [2024-06-28 01:58:25,157 INFO L125 PetriNetUnfolderBase]: For 87640/87701 co-relation queries the response was YES. [2024-06-28 01:58:25,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52978 conditions, 9757 events. 6440/9757 cut-off events. For 87640/87701 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 58427 event pairs, 1637 based on Foata normal form. 19/9724 useless extension candidates. Maximal degree in co-relation 52916. Up to 8776 conditions per place. [2024-06-28 01:58:25,235 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 189 selfloop transitions, 17 changer transitions 0/220 dead transitions. [2024-06-28 01:58:25,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 220 transitions, 2915 flow [2024-06-28 01:58:25,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:58:25,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:58:25,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 01:58:25,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260869565217391 [2024-06-28 01:58:25,237 INFO L175 Difference]: Start difference. First operand has 132 places, 198 transitions, 2455 flow. Second operand 5 states and 121 transitions. [2024-06-28 01:58:25,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 220 transitions, 2915 flow [2024-06-28 01:58:25,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 220 transitions, 2818 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:25,448 INFO L231 Difference]: Finished difference. Result has 132 places, 198 transitions, 2402 flow [2024-06-28 01:58:25,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2358, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2402, PETRI_PLACES=132, PETRI_TRANSITIONS=198} [2024-06-28 01:58:25,449 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 82 predicate places. [2024-06-28 01:58:25,449 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 198 transitions, 2402 flow [2024-06-28 01:58:25,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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 01:58:25,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:25,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:25,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:58:25,450 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:25,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:25,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1845271994, now seen corresponding path program 1 times [2024-06-28 01:58:25,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:25,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509161294] [2024-06-28 01:58:25,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:25,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:28,543 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 01:58:28,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:28,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509161294] [2024-06-28 01:58:28,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509161294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:28,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:28,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:28,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752877634] [2024-06-28 01:58:28,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:28,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:28,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:28,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:28,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:28,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:28,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 198 transitions, 2402 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:28,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:28,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:28,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:30,762 INFO L124 PetriNetUnfolderBase]: 6705/9919 cut-off events. [2024-06-28 01:58:30,762 INFO L125 PetriNetUnfolderBase]: For 89591/89600 co-relation queries the response was YES. [2024-06-28 01:58:30,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54065 conditions, 9919 events. 6705/9919 cut-off events. For 89591/89600 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 57864 event pairs, 1285 based on Foata normal form. 10/9926 useless extension candidates. Maximal degree in co-relation 54002. Up to 9009 conditions per place. [2024-06-28 01:58:30,852 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 227 selfloop transitions, 39 changer transitions 0/272 dead transitions. [2024-06-28 01:58:30,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 272 transitions, 3324 flow [2024-06-28 01:58:30,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:30,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:58:30,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5516304347826086 [2024-06-28 01:58:30,853 INFO L175 Difference]: Start difference. First operand has 132 places, 198 transitions, 2402 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:58:30,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 272 transitions, 3324 flow [2024-06-28 01:58:31,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 272 transitions, 3300 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:31,200 INFO L231 Difference]: Finished difference. Result has 138 places, 202 transitions, 2551 flow [2024-06-28 01:58:31,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2378, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2551, PETRI_PLACES=138, PETRI_TRANSITIONS=202} [2024-06-28 01:58:31,200 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 88 predicate places. [2024-06-28 01:58:31,200 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 202 transitions, 2551 flow [2024-06-28 01:58:31,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:31,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:31,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:31,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:58:31,201 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:31,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:31,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1842415034, now seen corresponding path program 2 times [2024-06-28 01:58:31,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:31,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294669138] [2024-06-28 01:58:31,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:31,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:33,788 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 01:58:33,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:33,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294669138] [2024-06-28 01:58:33,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294669138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:33,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:33,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:33,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241215068] [2024-06-28 01:58:33,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:33,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:33,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:33,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:33,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:33,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:33,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 202 transitions, 2551 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:33,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:33,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:33,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:36,271 INFO L124 PetriNetUnfolderBase]: 6755/9993 cut-off events. [2024-06-28 01:58:36,272 INFO L125 PetriNetUnfolderBase]: For 98210/98219 co-relation queries the response was YES. [2024-06-28 01:58:36,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55205 conditions, 9993 events. 6755/9993 cut-off events. For 98210/98219 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 58243 event pairs, 1569 based on Foata normal form. 10/10000 useless extension candidates. Maximal degree in co-relation 55140. Up to 9235 conditions per place. [2024-06-28 01:58:36,347 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 229 selfloop transitions, 36 changer transitions 0/271 dead transitions. [2024-06-28 01:58:36,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 271 transitions, 3357 flow [2024-06-28 01:58:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:36,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:58:36,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-28 01:58:36,349 INFO L175 Difference]: Start difference. First operand has 138 places, 202 transitions, 2551 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:58:36,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 271 transitions, 3357 flow [2024-06-28 01:58:36,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 271 transitions, 3241 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:36,584 INFO L231 Difference]: Finished difference. Result has 141 places, 204 transitions, 2564 flow [2024-06-28 01:58:36,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2451, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2564, PETRI_PLACES=141, PETRI_TRANSITIONS=204} [2024-06-28 01:58:36,585 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 91 predicate places. [2024-06-28 01:58:36,585 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 204 transitions, 2564 flow [2024-06-28 01:58:36,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:36,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:36,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:36,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:58:36,586 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:36,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:36,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1700326320, now seen corresponding path program 3 times [2024-06-28 01:58:36,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:36,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477283329] [2024-06-28 01:58:36,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:36,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:39,341 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 01:58:39,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:39,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477283329] [2024-06-28 01:58:39,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477283329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:39,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:39,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:39,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870347197] [2024-06-28 01:58:39,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:39,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:39,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:39,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:39,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:39,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:39,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 204 transitions, 2564 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:39,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:39,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:39,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:41,803 INFO L124 PetriNetUnfolderBase]: 6805/10065 cut-off events. [2024-06-28 01:58:41,803 INFO L125 PetriNetUnfolderBase]: For 97858/97867 co-relation queries the response was YES. [2024-06-28 01:58:41,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55246 conditions, 10065 events. 6805/10065 cut-off events. For 97858/97867 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 58685 event pairs, 1567 based on Foata normal form. 10/10072 useless extension candidates. Maximal degree in co-relation 55180. Up to 9384 conditions per place. [2024-06-28 01:58:41,883 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 234 selfloop transitions, 28 changer transitions 0/268 dead transitions. [2024-06-28 01:58:41,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 268 transitions, 3320 flow [2024-06-28 01:58:41,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:41,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:41,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:58:41,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529891304347826 [2024-06-28 01:58:41,885 INFO L175 Difference]: Start difference. First operand has 141 places, 204 transitions, 2564 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:58:41,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 268 transitions, 3320 flow [2024-06-28 01:58:42,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 268 transitions, 3245 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:58:42,143 INFO L231 Difference]: Finished difference. Result has 143 places, 206 transitions, 2591 flow [2024-06-28 01:58:42,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2489, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2591, PETRI_PLACES=143, PETRI_TRANSITIONS=206} [2024-06-28 01:58:42,144 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 93 predicate places. [2024-06-28 01:58:42,144 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 206 transitions, 2591 flow [2024-06-28 01:58:42,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:42,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:42,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:42,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:58:42,145 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:42,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:42,145 INFO L85 PathProgramCache]: Analyzing trace with hash -46607860, now seen corresponding path program 1 times [2024-06-28 01:58:42,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:42,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439899470] [2024-06-28 01:58:42,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:42,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:45,237 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 01:58:45,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:45,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439899470] [2024-06-28 01:58:45,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439899470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:45,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:45,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:45,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612466190] [2024-06-28 01:58:45,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:45,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:45,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:45,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:45,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:45,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:45,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 206 transitions, 2591 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:45,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:45,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:45,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:47,792 INFO L124 PetriNetUnfolderBase]: 7083/10373 cut-off events. [2024-06-28 01:58:47,792 INFO L125 PetriNetUnfolderBase]: For 108284/108293 co-relation queries the response was YES. [2024-06-28 01:58:47,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56847 conditions, 10373 events. 7083/10373 cut-off events. For 108284/108293 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 59548 event pairs, 1390 based on Foata normal form. 22/10392 useless extension candidates. Maximal degree in co-relation 56780. Up to 8918 conditions per place. [2024-06-28 01:58:47,884 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 242 selfloop transitions, 51 changer transitions 0/299 dead transitions. [2024-06-28 01:58:47,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 299 transitions, 3565 flow [2024-06-28 01:58:47,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:58:47,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:58:47,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-28 01:58:47,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558695652173913 [2024-06-28 01:58:47,886 INFO L175 Difference]: Start difference. First operand has 143 places, 206 transitions, 2591 flow. Second operand 10 states and 257 transitions. [2024-06-28 01:58:47,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 299 transitions, 3565 flow [2024-06-28 01:58:48,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 299 transitions, 3503 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:58:48,324 INFO L231 Difference]: Finished difference. Result has 147 places, 209 transitions, 2700 flow [2024-06-28 01:58:48,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2529, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2700, PETRI_PLACES=147, PETRI_TRANSITIONS=209} [2024-06-28 01:58:48,325 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 97 predicate places. [2024-06-28 01:58:48,325 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 209 transitions, 2700 flow [2024-06-28 01:58:48,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:48,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:48,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:48,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:58:48,325 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:48,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:48,340 INFO L85 PathProgramCache]: Analyzing trace with hash -766192378, now seen corresponding path program 4 times [2024-06-28 01:58:48,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:48,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958343653] [2024-06-28 01:58:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:48,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:50,947 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 01:58:50,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:50,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958343653] [2024-06-28 01:58:50,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958343653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:50,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:50,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:50,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208197349] [2024-06-28 01:58:50,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:50,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:50,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:50,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:50,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:50,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:50,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 209 transitions, 2700 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:50,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:50,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:50,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:53,735 INFO L124 PetriNetUnfolderBase]: 7075/10469 cut-off events. [2024-06-28 01:58:53,736 INFO L125 PetriNetUnfolderBase]: For 112858/112867 co-relation queries the response was YES. [2024-06-28 01:58:53,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58258 conditions, 10469 events. 7075/10469 cut-off events. For 112858/112867 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 61529 event pairs, 1337 based on Foata normal form. 10/10476 useless extension candidates. Maximal degree in co-relation 58190. Up to 9620 conditions per place. [2024-06-28 01:58:53,814 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 222 selfloop transitions, 37 changer transitions 0/265 dead transitions. [2024-06-28 01:58:53,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 265 transitions, 3410 flow [2024-06-28 01:58:53,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:53,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:58:53,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5496894409937888 [2024-06-28 01:58:53,816 INFO L175 Difference]: Start difference. First operand has 147 places, 209 transitions, 2700 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:58:53,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 265 transitions, 3410 flow [2024-06-28 01:58:54,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 265 transitions, 3273 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 01:58:54,060 INFO L231 Difference]: Finished difference. Result has 146 places, 209 transitions, 2651 flow [2024-06-28 01:58:54,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2563, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2651, PETRI_PLACES=146, PETRI_TRANSITIONS=209} [2024-06-28 01:58:54,060 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 96 predicate places. [2024-06-28 01:58:54,061 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 209 transitions, 2651 flow [2024-06-28 01:58:54,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:54,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:54,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:54,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:58:54,061 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:54,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:54,062 INFO L85 PathProgramCache]: Analyzing trace with hash -538106530, now seen corresponding path program 2 times [2024-06-28 01:58:54,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:54,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908815868] [2024-06-28 01:58:54,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:54,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:57,376 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 01:58:57,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:57,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908815868] [2024-06-28 01:58:57,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908815868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:57,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:57,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:57,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321568342] [2024-06-28 01:58:57,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:57,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:57,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:57,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:57,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:57,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:57,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 209 transitions, 2651 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:57,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:57,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:57,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:59,666 INFO L124 PetriNetUnfolderBase]: 7337/10881 cut-off events. [2024-06-28 01:58:59,666 INFO L125 PetriNetUnfolderBase]: For 122567/122641 co-relation queries the response was YES. [2024-06-28 01:58:59,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59259 conditions, 10881 events. 7337/10881 cut-off events. For 122567/122641 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 64144 event pairs, 1192 based on Foata normal form. 54/10928 useless extension candidates. Maximal degree in co-relation 59190. Up to 8564 conditions per place. [2024-06-28 01:58:59,763 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 216 selfloop transitions, 53 changer transitions 0/275 dead transitions. [2024-06-28 01:58:59,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 275 transitions, 3577 flow [2024-06-28 01:58:59,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:59,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-28 01:58:59,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745341614906833 [2024-06-28 01:58:59,766 INFO L175 Difference]: Start difference. First operand has 146 places, 209 transitions, 2651 flow. Second operand 7 states and 185 transitions. [2024-06-28 01:58:59,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 275 transitions, 3577 flow [2024-06-28 01:59:00,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 275 transitions, 3488 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:59:00,084 INFO L231 Difference]: Finished difference. Result has 147 places, 211 transitions, 2718 flow [2024-06-28 01:59:00,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2566, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2718, PETRI_PLACES=147, PETRI_TRANSITIONS=211} [2024-06-28 01:59:00,085 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 97 predicate places. [2024-06-28 01:59:00,085 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 211 transitions, 2718 flow [2024-06-28 01:59:00,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:00,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:00,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:00,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:59:00,085 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:00,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:00,086 INFO L85 PathProgramCache]: Analyzing trace with hash -766007680, now seen corresponding path program 3 times [2024-06-28 01:59:00,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:00,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41825463] [2024-06-28 01:59:00,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:00,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:03,180 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 01:59:03,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:03,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41825463] [2024-06-28 01:59:03,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41825463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:03,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:03,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:03,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049057030] [2024-06-28 01:59:03,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:03,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:03,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:03,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:03,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:03,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:59:03,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 211 transitions, 2718 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:03,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:03,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:59:03,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:05,614 INFO L124 PetriNetUnfolderBase]: 7615/11183 cut-off events. [2024-06-28 01:59:05,615 INFO L125 PetriNetUnfolderBase]: For 130476/130485 co-relation queries the response was YES. [2024-06-28 01:59:05,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62372 conditions, 11183 events. 7615/11183 cut-off events. For 130476/130485 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 64907 event pairs, 1461 based on Foata normal form. 22/11202 useless extension candidates. Maximal degree in co-relation 62302. Up to 9402 conditions per place. [2024-06-28 01:59:05,728 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 220 selfloop transitions, 54 changer transitions 0/280 dead transitions. [2024-06-28 01:59:05,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 280 transitions, 3556 flow [2024-06-28 01:59:05,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:05,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:05,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:59:05,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-28 01:59:05,730 INFO L175 Difference]: Start difference. First operand has 147 places, 211 transitions, 2718 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:59:05,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 280 transitions, 3556 flow [2024-06-28 01:59:06,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 280 transitions, 3442 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:06,057 INFO L231 Difference]: Finished difference. Result has 150 places, 214 transitions, 2796 flow [2024-06-28 01:59:06,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2604, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2796, PETRI_PLACES=150, PETRI_TRANSITIONS=214} [2024-06-28 01:59:06,058 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 100 predicate places. [2024-06-28 01:59:06,058 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 214 transitions, 2796 flow [2024-06-28 01:59:06,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:06,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:06,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:06,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:59:06,059 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:06,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:06,059 INFO L85 PathProgramCache]: Analyzing trace with hash -529535650, now seen corresponding path program 4 times [2024-06-28 01:59:06,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:06,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849249015] [2024-06-28 01:59:06,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:06,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:09,172 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 01:59:09,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:09,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849249015] [2024-06-28 01:59:09,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849249015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:09,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:09,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:09,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538722482] [2024-06-28 01:59:09,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:09,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:09,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:09,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:09,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:09,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:59:09,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 214 transitions, 2796 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:09,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:09,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:59:09,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:11,790 INFO L124 PetriNetUnfolderBase]: 8111/12091 cut-off events. [2024-06-28 01:59:11,790 INFO L125 PetriNetUnfolderBase]: For 146620/146694 co-relation queries the response was YES. [2024-06-28 01:59:11,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66549 conditions, 12091 events. 8111/12091 cut-off events. For 146620/146694 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 72784 event pairs, 1218 based on Foata normal form. 54/12138 useless extension candidates. Maximal degree in co-relation 66478. Up to 8104 conditions per place. [2024-06-28 01:59:11,892 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 220 selfloop transitions, 62 changer transitions 0/288 dead transitions. [2024-06-28 01:59:11,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 288 transitions, 3896 flow [2024-06-28 01:59:11,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:11,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:11,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-28 01:59:11,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-06-28 01:59:11,894 INFO L175 Difference]: Start difference. First operand has 150 places, 214 transitions, 2796 flow. Second operand 7 states and 189 transitions. [2024-06-28 01:59:11,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 288 transitions, 3896 flow [2024-06-28 01:59:12,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 288 transitions, 3758 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 01:59:12,268 INFO L231 Difference]: Finished difference. Result has 152 places, 219 transitions, 2915 flow [2024-06-28 01:59:12,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2658, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2915, PETRI_PLACES=152, PETRI_TRANSITIONS=219} [2024-06-28 01:59:12,269 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 102 predicate places. [2024-06-28 01:59:12,269 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 219 transitions, 2915 flow [2024-06-28 01:59:12,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:12,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:12,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:12,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:59:12,270 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:12,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:12,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1747419627, now seen corresponding path program 1 times [2024-06-28 01:59:12,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:12,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319640697] [2024-06-28 01:59:12,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:12,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:14,725 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 01:59:14,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:14,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319640697] [2024-06-28 01:59:14,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319640697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:14,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:14,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:14,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943362826] [2024-06-28 01:59:14,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:14,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:14,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:14,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:14,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:14,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:59:14,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 219 transitions, 2915 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:14,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:14,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:59:14,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:19,784 INFO L124 PetriNetUnfolderBase]: 15340/22680 cut-off events. [2024-06-28 01:59:19,784 INFO L125 PetriNetUnfolderBase]: For 306835/306875 co-relation queries the response was YES. [2024-06-28 01:59:19,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129092 conditions, 22680 events. 15340/22680 cut-off events. For 306835/306875 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 147667 event pairs, 2775 based on Foata normal form. 85/22762 useless extension candidates. Maximal degree in co-relation 129019. Up to 10614 conditions per place. [2024-06-28 01:59:20,042 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 312 selfloop transitions, 246 changer transitions 0/564 dead transitions. [2024-06-28 01:59:20,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 564 transitions, 7649 flow [2024-06-28 01:59:20,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:59:20,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:59:20,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 369 transitions. [2024-06-28 01:59:20,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.617056856187291 [2024-06-28 01:59:20,045 INFO L175 Difference]: Start difference. First operand has 152 places, 219 transitions, 2915 flow. Second operand 13 states and 369 transitions. [2024-06-28 01:59:20,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 564 transitions, 7649 flow [2024-06-28 01:59:21,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 564 transitions, 7527 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:21,086 INFO L231 Difference]: Finished difference. Result has 168 places, 375 transitions, 5848 flow [2024-06-28 01:59:21,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2827, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5848, PETRI_PLACES=168, PETRI_TRANSITIONS=375} [2024-06-28 01:59:21,086 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 118 predicate places. [2024-06-28 01:59:21,086 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 375 transitions, 5848 flow [2024-06-28 01:59:21,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:21,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:21,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:21,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:59:21,087 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:21,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:21,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1283951385, now seen corresponding path program 2 times [2024-06-28 01:59:21,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:21,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959046529] [2024-06-28 01:59:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:21,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:24,281 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 01:59:24,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:24,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959046529] [2024-06-28 01:59:24,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959046529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:24,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:24,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:24,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966758271] [2024-06-28 01:59:24,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:24,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:24,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:24,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:24,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:24,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:59:24,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 375 transitions, 5848 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:24,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:24,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:59:24,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:30,919 INFO L124 PetriNetUnfolderBase]: 18395/27538 cut-off events. [2024-06-28 01:59:30,919 INFO L125 PetriNetUnfolderBase]: For 440930/440982 co-relation queries the response was YES. [2024-06-28 01:59:31,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164302 conditions, 27538 events. 18395/27538 cut-off events. For 440930/440982 co-relation queries the response was YES. Maximal size of possible extension queue 1153. Compared 188163 event pairs, 3356 based on Foata normal form. 95/27630 useless extension candidates. Maximal degree in co-relation 164221. Up to 8551 conditions per place. [2024-06-28 01:59:31,223 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 259 selfloop transitions, 258 changer transitions 0/523 dead transitions. [2024-06-28 01:59:31,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 523 transitions, 7993 flow [2024-06-28 01:59:31,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:59:31,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:59:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 308 transitions. [2024-06-28 01:59:31,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2024-06-28 01:59:31,233 INFO L175 Difference]: Start difference. First operand has 168 places, 375 transitions, 5848 flow. Second operand 11 states and 308 transitions. [2024-06-28 01:59:31,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 523 transitions, 7993 flow [2024-06-28 01:59:32,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 523 transitions, 7749 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:32,781 INFO L231 Difference]: Finished difference. Result has 178 places, 383 transitions, 6466 flow [2024-06-28 01:59:32,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5604, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6466, PETRI_PLACES=178, PETRI_TRANSITIONS=383} [2024-06-28 01:59:32,784 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 128 predicate places. [2024-06-28 01:59:32,784 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 383 transitions, 6466 flow [2024-06-28 01:59:32,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:32,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:32,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:32,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:59:32,785 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:32,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:32,786 INFO L85 PathProgramCache]: Analyzing trace with hash -536257921, now seen corresponding path program 3 times [2024-06-28 01:59:32,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:32,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466025983] [2024-06-28 01:59:32,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:32,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:35,800 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 01:59:35,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:35,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466025983] [2024-06-28 01:59:35,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466025983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:35,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:35,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:35,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123983686] [2024-06-28 01:59:35,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:35,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:35,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:35,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:35,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:35,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:59:35,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 383 transitions, 6466 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:35,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:35,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:59:35,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:44,108 INFO L124 PetriNetUnfolderBase]: 22549/33861 cut-off events. [2024-06-28 01:59:44,108 INFO L125 PetriNetUnfolderBase]: For 656612/656664 co-relation queries the response was YES. [2024-06-28 01:59:44,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200250 conditions, 33861 events. 22549/33861 cut-off events. For 656612/656664 co-relation queries the response was YES. Maximal size of possible extension queue 1446. Compared 242079 event pairs, 6353 based on Foata normal form. 151/34009 useless extension candidates. Maximal degree in co-relation 200166. Up to 20492 conditions per place. [2024-06-28 01:59:44,834 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 274 selfloop transitions, 251 changer transitions 0/531 dead transitions. [2024-06-28 01:59:44,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 531 transitions, 8596 flow [2024-06-28 01:59:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:59:44,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:59:44,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 328 transitions. [2024-06-28 01:59:44,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-06-28 01:59:44,836 INFO L175 Difference]: Start difference. First operand has 178 places, 383 transitions, 6466 flow. Second operand 12 states and 328 transitions. [2024-06-28 01:59:44,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 531 transitions, 8596 flow [2024-06-28 01:59:47,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 531 transitions, 8119 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-28 01:59:47,716 INFO L231 Difference]: Finished difference. Result has 184 places, 390 transitions, 6731 flow [2024-06-28 01:59:47,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6001, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6731, PETRI_PLACES=184, PETRI_TRANSITIONS=390} [2024-06-28 01:59:47,717 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 134 predicate places. [2024-06-28 01:59:47,717 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 390 transitions, 6731 flow [2024-06-28 01:59:47,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:47,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:47,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:47,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:59:47,718 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:47,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:47,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1253303233, now seen corresponding path program 4 times [2024-06-28 01:59:47,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:47,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61191818] [2024-06-28 01:59:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:47,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:50,753 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 01:59:50,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:50,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61191818] [2024-06-28 01:59:50,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61191818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:50,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:50,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:50,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046702740] [2024-06-28 01:59:50,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:50,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:50,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:50,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:50,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:50,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:59:50,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 390 transitions, 6731 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:50,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:50,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:59:50,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:59,276 INFO L124 PetriNetUnfolderBase]: 23957/36021 cut-off events. [2024-06-28 01:59:59,276 INFO L125 PetriNetUnfolderBase]: For 686052/686104 co-relation queries the response was YES. [2024-06-28 01:59:59,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209346 conditions, 36021 events. 23957/36021 cut-off events. For 686052/686104 co-relation queries the response was YES. Maximal size of possible extension queue 1566. Compared 262068 event pairs, 7494 based on Foata normal form. 167/36185 useless extension candidates. Maximal degree in co-relation 209260. Up to 26527 conditions per place. [2024-06-28 01:59:59,804 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 266 selfloop transitions, 249 changer transitions 0/521 dead transitions. [2024-06-28 01:59:59,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 521 transitions, 8549 flow [2024-06-28 01:59:59,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:59:59,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:59:59,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 317 transitions. [2024-06-28 01:59:59,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5742753623188406 [2024-06-28 01:59:59,807 INFO L175 Difference]: Start difference. First operand has 184 places, 390 transitions, 6731 flow. Second operand 12 states and 317 transitions. [2024-06-28 01:59:59,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 521 transitions, 8549 flow