./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe009_power.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_power.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_power.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe009_power.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 01:56:38,152 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:56:38,227 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:56:38,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:56:38,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:56:38,242 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:56:38,243 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:56:38,243 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:56:38,244 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:56:38,244 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:56:38,244 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:56:38,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:56:38,245 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:56:38,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:56:38,245 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:56:38,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:56:38,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:56:38,246 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:56:38,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:56:38,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:56:38,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:56:38,249 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:56:38,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:56:38,249 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:56:38,249 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:56:38,250 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:56:38,250 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:56:38,251 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:56:38,251 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:56:38,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:56:38,252 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:56:38,252 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:56:38,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:56:38,253 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:56:38,253 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:56:38,253 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:56:38,253 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:56:38,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:56:38,253 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:56:38,254 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:56:38,254 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:56:38,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:56:38,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:56:38,254 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:56:38,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:56:38,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:56:38,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:56:38,457 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:56:38,458 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:56:38,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_power.oepc.i [2024-06-28 01:56:39,390 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:56:39,583 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:56:39,583 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_power.oepc.i [2024-06-28 01:56:39,596 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41e86f4d4/c3e7bc0599b74f17be875883e6fa1f99/FLAG642d21bb2 [2024-06-28 01:56:39,606 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41e86f4d4/c3e7bc0599b74f17be875883e6fa1f99 [2024-06-28 01:56:39,608 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:56:39,608 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:56:39,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe009_power.oepc.yml/witness.yml [2024-06-28 01:56:39,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:56:39,830 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:56:39,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:56:39,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:56:39,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:56:39,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:56:39" (1/2) ... [2024-06-28 01:56:39,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45741325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:39, skipping insertion in model container [2024-06-28 01:56:39,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:56:39" (1/2) ... [2024-06-28 01:56:39,838 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4d0d1ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:39, skipping insertion in model container [2024-06-28 01:56:39,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:56:39" (2/2) ... [2024-06-28 01:56:39,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45741325 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:39, skipping insertion in model container [2024-06-28 01:56:39,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:56:39" (2/2) ... [2024-06-28 01:56:39,839 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:56:39,939 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:56:39,941 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$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-28 01:56:39,941 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] (((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$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_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-28 01:56:39,941 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] (((((((((((((((((((((((((((((((((((! 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$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-28 01:56:39,941 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:56:39,942 INFO L106 edCorrectnessWitness]: ghost_update [L836-L836] multithreaded = 1; [2024-06-28 01:56:39,977 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:56:40,102 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_power.oepc.i[995,1008] [2024-06-28 01:56:40,239 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:56:40,255 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:56:40,284 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_power.oepc.i[995,1008] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:56:40,389 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:56:40,416 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:56:40,416 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:40 WrapperNode [2024-06-28 01:56:40,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:56:40,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:56:40,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:56:40,418 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:56:40,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:40" (1/1) ... [2024-06-28 01:56:40,437 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:40" (1/1) ... [2024-06-28 01:56:40,489 INFO L138 Inliner]: procedures = 175, calls = 100, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 276 [2024-06-28 01:56:40,489 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:56:40,489 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:56:40,490 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:56:40,490 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:56:40,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:40" (1/1) ... [2024-06-28 01:56:40,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:40" (1/1) ... [2024-06-28 01:56:40,520 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:40" (1/1) ... [2024-06-28 01:56:40,559 INFO L175 MemorySlicer]: Split 62 memory accesses to 2 slices as follows [2, 60]. 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 01:56:40,559 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:40" (1/1) ... [2024-06-28 01:56:40,560 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:40" (1/1) ... [2024-06-28 01:56:40,576 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:40" (1/1) ... [2024-06-28 01:56:40,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:40" (1/1) ... [2024-06-28 01:56:40,597 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:40" (1/1) ... [2024-06-28 01:56:40,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:40" (1/1) ... [2024-06-28 01:56:40,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:56:40,613 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:56:40,613 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:56:40,613 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:56:40,614 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:40" (1/1) ... [2024-06-28 01:56:40,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:56:40,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:56:40,642 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 01:56:40,660 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 01:56:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:56:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:56:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:56:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:56:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:56:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:56:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:56:40,676 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:56:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:56:40,677 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:56:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:56:40,677 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:56:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:56:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:56:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:56:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:56:40,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:56:40,681 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 01:56:40,822 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:56:40,824 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:56:41,338 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:56:41,339 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:56:41,750 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:56:41,750 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:56:41,750 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:56:41 BoogieIcfgContainer [2024-06-28 01:56:41,751 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:56:41,753 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:56:41,753 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:56:41,755 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:56:41,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:56:39" (1/4) ... [2024-06-28 01:56:41,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88c4fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:56:41, skipping insertion in model container [2024-06-28 01:56:41,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:56:39" (2/4) ... [2024-06-28 01:56:41,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88c4fb2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:56:41, skipping insertion in model container [2024-06-28 01:56:41,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:40" (3/4) ... [2024-06-28 01:56:41,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88c4fb2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:56:41, skipping insertion in model container [2024-06-28 01:56:41,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:56:41" (4/4) ... [2024-06-28 01:56:41,758 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_power.oepc.i [2024-06-28 01:56:41,772 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:56:41,772 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:56:41,773 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:56:41,830 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:56:41,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:56:41,888 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-28 01:56:41,888 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:56:41,892 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 55 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 01:56:41,893 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:56:41,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 40 transitions, 89 flow [2024-06-28 01:56:41,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:56:41,915 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;@74ac5e43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:56:41,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:56:41,921 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:56:41,921 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 01:56:41,921 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:56:41,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:41,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:56:41,923 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 01:56:41,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:41,926 INFO L85 PathProgramCache]: Analyzing trace with hash 899724176, now seen corresponding path program 1 times [2024-06-28 01:56:41,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:41,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700149364] [2024-06-28 01:56:41,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:41,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:43,565 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 01:56:43,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:43,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700149364] [2024-06-28 01:56:43,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700149364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:43,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:43,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:56:43,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837753531] [2024-06-28 01:56:43,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:43,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:56:43,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:43,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:56:43,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:56:43,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:56:43,633 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 01:56:43,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:43,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:56:43,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:44,558 INFO L124 PetriNetUnfolderBase]: 2790/4333 cut-off events. [2024-06-28 01:56:44,558 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 01:56:44,565 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 24208 event pairs, 1780 based on Foata normal form. 0/4178 useless extension candidates. Maximal degree in co-relation 8451. Up to 4049 conditions per place. [2024-06-28 01:56:44,583 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 44 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-28 01:56:44,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 227 flow [2024-06-28 01:56:44,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:56:44,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:56:44,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-06-28 01:56:44,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6376811594202898 [2024-06-28 01:56:44,595 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 89 flow. Second operand 3 states and 88 transitions. [2024-06-28 01:56:44,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 227 flow [2024-06-28 01:56:44,597 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 01:56:44,602 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 123 flow [2024-06-28 01:56:44,604 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 01:56:44,606 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2024-06-28 01:56:44,606 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 123 flow [2024-06-28 01:56:44,606 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 01:56:44,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:44,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:44,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:56:44,607 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 01:56:44,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:44,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1346684069, now seen corresponding path program 1 times [2024-06-28 01:56:44,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:44,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339875710] [2024-06-28 01:56:44,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:44,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:46,743 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 01:56:46,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:46,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339875710] [2024-06-28 01:56:46,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339875710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:46,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:46,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:56:46,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539960526] [2024-06-28 01:56:46,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:46,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:56:46,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:46,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:56:46,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:56:46,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:56:46,760 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 01:56:46,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:46,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:56:46,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:47,664 INFO L124 PetriNetUnfolderBase]: 2784/4127 cut-off events. [2024-06-28 01:56:47,665 INFO L125 PetriNetUnfolderBase]: For 705/708 co-relation queries the response was YES. [2024-06-28 01:56:47,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9274 conditions, 4127 events. 2784/4127 cut-off events. For 705/708 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 21831 event pairs, 1304 based on Foata normal form. 5/4130 useless extension candidates. Maximal degree in co-relation 9262. Up to 4007 conditions per place. [2024-06-28 01:56:47,683 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 61 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2024-06-28 01:56:47,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 355 flow [2024-06-28 01:56:47,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:56:47,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:56:47,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-28 01:56:47,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6467391304347826 [2024-06-28 01:56:47,685 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 123 flow. Second operand 4 states and 119 transitions. [2024-06-28 01:56:47,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 355 flow [2024-06-28 01:56:47,692 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 01:56:47,694 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 186 flow [2024-06-28 01:56:47,695 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 01:56:47,696 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2024-06-28 01:56:47,696 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 186 flow [2024-06-28 01:56:47,697 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 01:56:47,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:47,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:47,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:56:47,701 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 01:56:47,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:47,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1202465720, now seen corresponding path program 1 times [2024-06-28 01:56:47,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:47,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479683208] [2024-06-28 01:56:47,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:47,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:49,777 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 01:56:49,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:49,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479683208] [2024-06-28 01:56:49,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479683208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:49,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:49,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:56:49,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843298187] [2024-06-28 01:56:49,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:49,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:56:49,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:49,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:56:49,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:56:49,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:56:49,787 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 01:56:49,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:49,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:56:49,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:50,992 INFO L124 PetriNetUnfolderBase]: 3373/4966 cut-off events. [2024-06-28 01:56:50,992 INFO L125 PetriNetUnfolderBase]: For 2612/2612 co-relation queries the response was YES. [2024-06-28 01:56:50,998 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 26134 event pairs, 1214 based on Foata normal form. 3/4968 useless extension candidates. Maximal degree in co-relation 12445. Up to 4808 conditions per place. [2024-06-28 01:56:51,016 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 87 selfloop transitions, 12 changer transitions 0/106 dead transitions. [2024-06-28 01:56:51,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 106 transitions, 548 flow [2024-06-28 01:56:51,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:56:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:56:51,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-06-28 01:56:51,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-06-28 01:56:51,021 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 186 flow. Second operand 5 states and 145 transitions. [2024-06-28 01:56:51,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 106 transitions, 548 flow [2024-06-28 01:56:51,025 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 01:56:51,026 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 305 flow [2024-06-28 01:56:51,026 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 01:56:51,027 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 11 predicate places. [2024-06-28 01:56:51,027 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 305 flow [2024-06-28 01:56:51,027 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 01:56:51,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:51,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:51,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:56:51,028 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 01:56:51,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:51,029 INFO L85 PathProgramCache]: Analyzing trace with hash -222723395, now seen corresponding path program 1 times [2024-06-28 01:56:51,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:51,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827586330] [2024-06-28 01:56:51,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:51,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:53,368 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 01:56:53,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:53,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827586330] [2024-06-28 01:56:53,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827586330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:53,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:53,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:56:53,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135147042] [2024-06-28 01:56:53,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:53,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:56:53,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:53,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:56:53,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:56:53,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:56:53,378 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 01:56:53,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:53,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:56:53,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:54,611 INFO L124 PetriNetUnfolderBase]: 3364/4951 cut-off events. [2024-06-28 01:56:54,611 INFO L125 PetriNetUnfolderBase]: For 4072/4072 co-relation queries the response was YES. [2024-06-28 01:56:54,618 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 26094 event pairs, 847 based on Foata normal form. 6/4956 useless extension candidates. Maximal degree in co-relation 13534. Up to 4731 conditions per place. [2024-06-28 01:56:54,648 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 98 selfloop transitions, 14 changer transitions 0/119 dead transitions. [2024-06-28 01:56:54,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 119 transitions, 669 flow [2024-06-28 01:56:54,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:56:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:56:54,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-28 01:56:54,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6123188405797102 [2024-06-28 01:56:54,649 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 305 flow. Second operand 6 states and 169 transitions. [2024-06-28 01:56:54,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 119 transitions, 669 flow [2024-06-28 01:56:54,653 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 01:56:54,655 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 346 flow [2024-06-28 01:56:54,655 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 01:56:54,655 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 16 predicate places. [2024-06-28 01:56:54,656 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 346 flow [2024-06-28 01:56:54,656 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 01:56:54,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:54,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:54,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:56:54,656 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 01:56:54,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:54,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1969004725, now seen corresponding path program 1 times [2024-06-28 01:56:54,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:54,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958471362] [2024-06-28 01:56:54,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:54,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:56,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:56,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:56,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958471362] [2024-06-28 01:56:56,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958471362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:56,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:56,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:56:56,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695303517] [2024-06-28 01:56:56,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:56,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:56:56,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:56,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:56:56,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:56:56,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:56:56,307 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 01:56:56,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:56,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:56:56,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:57,604 INFO L124 PetriNetUnfolderBase]: 3434/5284 cut-off events. [2024-06-28 01:56:57,605 INFO L125 PetriNetUnfolderBase]: For 6070/6076 co-relation queries the response was YES. [2024-06-28 01:56:57,615 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 29354 event pairs, 1310 based on Foata normal form. 12/5294 useless extension candidates. Maximal degree in co-relation 14722. Up to 4704 conditions per place. [2024-06-28 01:56:57,633 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 79 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-06-28 01:56:57,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 101 transitions, 661 flow [2024-06-28 01:56:57,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:56:57,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:56:57,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-28 01:56:57,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5391304347826087 [2024-06-28 01:56:57,638 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 346 flow. Second operand 5 states and 124 transitions. [2024-06-28 01:56:57,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 101 transitions, 661 flow [2024-06-28 01:56:57,644 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 01:56:57,646 INFO L231 Difference]: Finished difference. Result has 68 places, 72 transitions, 425 flow [2024-06-28 01:56:57,646 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 01:56:57,648 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 18 predicate places. [2024-06-28 01:56:57,649 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 72 transitions, 425 flow [2024-06-28 01:56:57,649 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 01:56:57,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:57,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:57,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:56:57,649 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 01:56:57,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:57,652 INFO L85 PathProgramCache]: Analyzing trace with hash 650228742, now seen corresponding path program 1 times [2024-06-28 01:56:57,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:57,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84902348] [2024-06-28 01:56:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:57,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:00,348 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 01:57:00,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:00,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84902348] [2024-06-28 01:57:00,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84902348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:00,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:00,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:00,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443146637] [2024-06-28 01:57:00,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:00,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:00,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:00,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:00,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:00,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:00,367 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 01:57:00,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:00,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:00,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:02,052 INFO L124 PetriNetUnfolderBase]: 3465/5105 cut-off events. [2024-06-28 01:57:02,052 INFO L125 PetriNetUnfolderBase]: For 8777/8786 co-relation queries the response was YES. [2024-06-28 01:57:02,060 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 26894 event pairs, 1065 based on Foata normal form. 8/5111 useless extension candidates. Maximal degree in co-relation 16369. Up to 4824 conditions per place. [2024-06-28 01:57:02,073 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 103 selfloop transitions, 26 changer transitions 0/135 dead transitions. [2024-06-28 01:57:02,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 135 transitions, 891 flow [2024-06-28 01:57:02,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:02,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:02,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 01:57:02,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5527950310559007 [2024-06-28 01:57:02,075 INFO L175 Difference]: Start difference. First operand has 68 places, 72 transitions, 425 flow. Second operand 7 states and 178 transitions. [2024-06-28 01:57:02,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 135 transitions, 891 flow [2024-06-28 01:57:02,083 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 01:57:02,085 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 523 flow [2024-06-28 01:57:02,086 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 01:57:02,088 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 24 predicate places. [2024-06-28 01:57:02,089 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 523 flow [2024-06-28 01:57:02,089 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 01:57:02,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:02,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:02,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:57:02,089 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 01:57:02,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:02,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2044339562, now seen corresponding path program 1 times [2024-06-28 01:57:02,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:02,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458342212] [2024-06-28 01:57:02,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:02,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:04,644 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 01:57:04,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:04,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458342212] [2024-06-28 01:57:04,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458342212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:04,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:04,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:04,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787254503] [2024-06-28 01:57:04,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:04,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:04,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:04,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:04,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:04,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:04,667 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 01:57:04,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:04,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:04,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:06,465 INFO L124 PetriNetUnfolderBase]: 4094/6016 cut-off events. [2024-06-28 01:57:06,465 INFO L125 PetriNetUnfolderBase]: For 13087/13096 co-relation queries the response was YES. [2024-06-28 01:57:06,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20135 conditions, 6016 events. 4094/6016 cut-off events. For 13087/13096 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 32049 event pairs, 1096 based on Foata normal form. 14/6028 useless extension candidates. Maximal degree in co-relation 20105. Up to 5284 conditions per place. [2024-06-28 01:57:06,493 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 131 selfloop transitions, 36 changer transitions 0/173 dead transitions. [2024-06-28 01:57:06,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 173 transitions, 1202 flow [2024-06-28 01:57:06,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:57:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:57:06,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 01:57:06,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531400966183575 [2024-06-28 01:57:06,495 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 523 flow. Second operand 9 states and 229 transitions. [2024-06-28 01:57:06,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 173 transitions, 1202 flow [2024-06-28 01:57:06,506 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 01:57:06,508 INFO L231 Difference]: Finished difference. Result has 82 places, 96 transitions, 708 flow [2024-06-28 01:57:06,508 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 01:57:06,508 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 32 predicate places. [2024-06-28 01:57:06,508 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 96 transitions, 708 flow [2024-06-28 01:57:06,509 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 01:57:06,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:06,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:06,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:57:06,509 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 01:57:06,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:06,510 INFO L85 PathProgramCache]: Analyzing trace with hash -2044339748, now seen corresponding path program 2 times [2024-06-28 01:57:06,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:06,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162317020] [2024-06-28 01:57:06,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:06,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:09,125 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 01:57:09,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:09,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162317020] [2024-06-28 01:57:09,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162317020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:09,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:09,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:09,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513949225] [2024-06-28 01:57:09,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:09,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:09,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:09,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:09,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:09,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:09,140 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 01:57:09,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:09,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:09,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:10,782 INFO L124 PetriNetUnfolderBase]: 4125/6047 cut-off events. [2024-06-28 01:57:10,782 INFO L125 PetriNetUnfolderBase]: For 19577/19586 co-relation queries the response was YES. [2024-06-28 01:57:10,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23161 conditions, 6047 events. 4125/6047 cut-off events. For 19577/19586 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 32217 event pairs, 1132 based on Foata normal form. 8/6053 useless extension candidates. Maximal degree in co-relation 23127. Up to 5767 conditions per place. [2024-06-28 01:57:10,815 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 120 selfloop transitions, 24 changer transitions 0/150 dead transitions. [2024-06-28 01:57:10,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 150 transitions, 1164 flow [2024-06-28 01:57:10,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:10,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:10,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:57:10,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531055900621118 [2024-06-28 01:57:10,817 INFO L175 Difference]: Start difference. First operand has 82 places, 96 transitions, 708 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:57:10,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 150 transitions, 1164 flow [2024-06-28 01:57:10,842 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 01:57:10,844 INFO L231 Difference]: Finished difference. Result has 86 places, 99 transitions, 723 flow [2024-06-28 01:57:10,844 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 01:57:10,844 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2024-06-28 01:57:10,845 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 99 transitions, 723 flow [2024-06-28 01:57:10,845 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 01:57:10,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:10,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:10,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:57:10,845 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 01:57:10,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:10,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1234275730, now seen corresponding path program 2 times [2024-06-28 01:57:10,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:10,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516139592] [2024-06-28 01:57:10,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:10,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:13,104 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 01:57:13,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:13,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516139592] [2024-06-28 01:57:13,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516139592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:13,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:13,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:13,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696742187] [2024-06-28 01:57:13,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:13,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:13,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:13,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:13,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:13,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:13,130 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 01:57:13,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:13,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:13,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:14,674 INFO L124 PetriNetUnfolderBase]: 4453/6541 cut-off events. [2024-06-28 01:57:14,674 INFO L125 PetriNetUnfolderBase]: For 22415/22488 co-relation queries the response was YES. [2024-06-28 01:57:14,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24679 conditions, 6541 events. 4453/6541 cut-off events. For 22415/22488 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 35381 event pairs, 1159 based on Foata normal form. 40/6576 useless extension candidates. Maximal degree in co-relation 24643. Up to 4909 conditions per place. [2024-06-28 01:57:14,702 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 115 selfloop transitions, 43 changer transitions 0/164 dead transitions. [2024-06-28 01:57:14,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 164 transitions, 1363 flow [2024-06-28 01:57:14,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:14,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:14,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-28 01:57:14,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688405797101449 [2024-06-28 01:57:14,704 INFO L175 Difference]: Start difference. First operand has 86 places, 99 transitions, 723 flow. Second operand 6 states and 157 transitions. [2024-06-28 01:57:14,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 164 transitions, 1363 flow [2024-06-28 01:57:14,730 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 01:57:14,733 INFO L231 Difference]: Finished difference. Result has 89 places, 115 transitions, 951 flow [2024-06-28 01:57:14,733 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 01:57:14,734 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2024-06-28 01:57:14,734 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 115 transitions, 951 flow [2024-06-28 01:57:14,734 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 01:57:14,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:14,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:14,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:57:14,735 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 01:57:14,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:14,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1234038394, now seen corresponding path program 3 times [2024-06-28 01:57:14,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:14,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923562253] [2024-06-28 01:57:14,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:14,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:17,049 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 01:57:17,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:17,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923562253] [2024-06-28 01:57:17,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923562253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:17,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:17,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:17,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12682247] [2024-06-28 01:57:17,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:17,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:17,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:17,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:17,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:17,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:17,075 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 01:57:17,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:17,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:17,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:18,886 INFO L124 PetriNetUnfolderBase]: 4448/6514 cut-off events. [2024-06-28 01:57:18,886 INFO L125 PetriNetUnfolderBase]: For 28133/28142 co-relation queries the response was YES. [2024-06-28 01:57:18,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27940 conditions, 6514 events. 4448/6514 cut-off events. For 28133/28142 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 35031 event pairs, 1224 based on Foata normal form. 8/6520 useless extension candidates. Maximal degree in co-relation 27901. Up to 6150 conditions per place. [2024-06-28 01:57:18,925 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 124 selfloop transitions, 29 changer transitions 0/159 dead transitions. [2024-06-28 01:57:18,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 159 transitions, 1377 flow [2024-06-28 01:57:18,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:18,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 01:57:18,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2024-06-28 01:57:18,927 INFO L175 Difference]: Start difference. First operand has 89 places, 115 transitions, 951 flow. Second operand 6 states and 152 transitions. [2024-06-28 01:57:18,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 159 transitions, 1377 flow [2024-06-28 01:57:18,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 159 transitions, 1339 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:18,978 INFO L231 Difference]: Finished difference. Result has 94 places, 115 transitions, 987 flow [2024-06-28 01:57:18,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=987, PETRI_PLACES=94, PETRI_TRANSITIONS=115} [2024-06-28 01:57:18,978 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 44 predicate places. [2024-06-28 01:57:18,979 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 115 transitions, 987 flow [2024-06-28 01:57:18,979 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 01:57:18,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:18,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:18,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:57:18,979 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 01:57:18,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:18,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1170672738, now seen corresponding path program 3 times [2024-06-28 01:57:18,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:18,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632452753] [2024-06-28 01:57:18,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:18,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:21,095 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 01:57:21,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:21,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632452753] [2024-06-28 01:57:21,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632452753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:21,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:21,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:21,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729342390] [2024-06-28 01:57:21,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:21,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:21,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:21,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:21,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:21,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:21,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 115 transitions, 987 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 01:57:21,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:21,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:21,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:22,735 INFO L124 PetriNetUnfolderBase]: 4434/6520 cut-off events. [2024-06-28 01:57:22,735 INFO L125 PetriNetUnfolderBase]: For 27697/27706 co-relation queries the response was YES. [2024-06-28 01:57:22,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27279 conditions, 6520 events. 4434/6520 cut-off events. For 27697/27706 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 35192 event pairs, 1137 based on Foata normal form. 14/6532 useless extension candidates. Maximal degree in co-relation 27237. Up to 5694 conditions per place. [2024-06-28 01:57:22,773 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 122 selfloop transitions, 40 changer transitions 0/168 dead transitions. [2024-06-28 01:57:22,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 168 transitions, 1490 flow [2024-06-28 01:57:22,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:22,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:22,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:57:22,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-28 01:57:22,774 INFO L175 Difference]: Start difference. First operand has 94 places, 115 transitions, 987 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:57:22,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 168 transitions, 1490 flow [2024-06-28 01:57:22,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 168 transitions, 1426 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:57:22,810 INFO L231 Difference]: Finished difference. Result has 97 places, 118 transitions, 1081 flow [2024-06-28 01:57:22,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=89, 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=1081, PETRI_PLACES=97, PETRI_TRANSITIONS=118} [2024-06-28 01:57:22,811 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 47 predicate places. [2024-06-28 01:57:22,811 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 118 transitions, 1081 flow [2024-06-28 01:57:22,811 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 01:57:22,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:22,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:22,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:57:22,812 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 01:57:22,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:22,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1234284658, now seen corresponding path program 1 times [2024-06-28 01:57:22,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:22,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167920783] [2024-06-28 01:57:22,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:22,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:25,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:25,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167920783] [2024-06-28 01:57:25,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167920783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:25,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:25,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:25,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8040141] [2024-06-28 01:57:25,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:25,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:25,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:25,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:25,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:25,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:25,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 118 transitions, 1081 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 01:57:25,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:25,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:25,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:26,934 INFO L124 PetriNetUnfolderBase]: 4610/7006 cut-off events. [2024-06-28 01:57:26,940 INFO L125 PetriNetUnfolderBase]: For 30570/30579 co-relation queries the response was YES. [2024-06-28 01:57:26,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29403 conditions, 7006 events. 4610/7006 cut-off events. For 30570/30579 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 39511 event pairs, 1285 based on Foata normal form. 22/7026 useless extension candidates. Maximal degree in co-relation 29359. Up to 6082 conditions per place. [2024-06-28 01:57:26,979 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 140 selfloop transitions, 19 changer transitions 0/165 dead transitions. [2024-06-28 01:57:26,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 165 transitions, 1572 flow [2024-06-28 01:57:26,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:26,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 01:57:26,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2024-06-28 01:57:26,982 INFO L175 Difference]: Start difference. First operand has 97 places, 118 transitions, 1081 flow. Second operand 6 states and 152 transitions. [2024-06-28 01:57:26,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 165 transitions, 1572 flow [2024-06-28 01:57:27,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 165 transitions, 1503 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:57:27,035 INFO L231 Difference]: Finished difference. Result has 99 places, 121 transitions, 1105 flow [2024-06-28 01:57:27,036 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 01:57:27,036 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 49 predicate places. [2024-06-28 01:57:27,036 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 121 transitions, 1105 flow [2024-06-28 01:57:27,036 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 01:57:27,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:27,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:27,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:57:27,037 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 01:57:27,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:27,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1317743171, now seen corresponding path program 1 times [2024-06-28 01:57:27,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:27,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673081568] [2024-06-28 01:57:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:27,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:29,495 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 01:57:29,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:29,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673081568] [2024-06-28 01:57:29,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673081568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:29,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:29,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:29,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935576319] [2024-06-28 01:57:29,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:29,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:29,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:29,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:29,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:29,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:29,547 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 01:57:29,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:29,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:29,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:31,904 INFO L124 PetriNetUnfolderBase]: 5208/7716 cut-off events. [2024-06-28 01:57:31,904 INFO L125 PetriNetUnfolderBase]: For 37555/37564 co-relation queries the response was YES. [2024-06-28 01:57:31,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32956 conditions, 7716 events. 5208/7716 cut-off events. For 37555/37564 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 43140 event pairs, 1256 based on Foata normal form. 14/7728 useless extension candidates. Maximal degree in co-relation 32911. Up to 5933 conditions per place. [2024-06-28 01:57:31,949 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 172 selfloop transitions, 63 changer transitions 0/241 dead transitions. [2024-06-28 01:57:31,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 241 transitions, 2093 flow [2024-06-28 01:57:31,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:57:31,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:57:31,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 288 transitions. [2024-06-28 01:57:31,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691699604743083 [2024-06-28 01:57:31,951 INFO L175 Difference]: Start difference. First operand has 99 places, 121 transitions, 1105 flow. Second operand 11 states and 288 transitions. [2024-06-28 01:57:31,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 241 transitions, 2093 flow [2024-06-28 01:57:32,012 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 01:57:32,015 INFO L231 Difference]: Finished difference. Result has 108 places, 136 transitions, 1357 flow [2024-06-28 01:57:32,015 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 01:57:32,016 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 58 predicate places. [2024-06-28 01:57:32,016 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 136 transitions, 1357 flow [2024-06-28 01:57:32,016 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 01:57:32,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:32,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:32,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:57:32,016 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 01:57:32,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:32,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1049985139, now seen corresponding path program 2 times [2024-06-28 01:57:32,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:32,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057041429] [2024-06-28 01:57:32,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:32,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:34,594 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 01:57:34,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:34,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057041429] [2024-06-28 01:57:34,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057041429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:34,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:34,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:34,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794343067] [2024-06-28 01:57:34,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:34,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:34,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:34,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:34,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:34,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:34,613 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 01:57:34,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:34,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:34,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:37,219 INFO L124 PetriNetUnfolderBase]: 5707/8407 cut-off events. [2024-06-28 01:57:37,219 INFO L125 PetriNetUnfolderBase]: For 53189/53198 co-relation queries the response was YES. [2024-06-28 01:57:37,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39095 conditions, 8407 events. 5707/8407 cut-off events. For 53189/53198 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 47354 event pairs, 1287 based on Foata normal form. 14/8419 useless extension candidates. Maximal degree in co-relation 39047. Up to 6952 conditions per place. [2024-06-28 01:57:37,273 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 204 selfloop transitions, 58 changer transitions 0/268 dead transitions. [2024-06-28 01:57:37,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 268 transitions, 2526 flow [2024-06-28 01:57:37,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:57:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:57:37,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 313 transitions. [2024-06-28 01:57:37,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5670289855072463 [2024-06-28 01:57:37,275 INFO L175 Difference]: Start difference. First operand has 108 places, 136 transitions, 1357 flow. Second operand 12 states and 313 transitions. [2024-06-28 01:57:37,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 268 transitions, 2526 flow [2024-06-28 01:57:37,372 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 01:57:37,374 INFO L231 Difference]: Finished difference. Result has 115 places, 154 transitions, 1578 flow [2024-06-28 01:57:37,375 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 01:57:37,375 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 65 predicate places. [2024-06-28 01:57:37,375 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 154 transitions, 1578 flow [2024-06-28 01:57:37,375 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 01:57:37,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:37,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:37,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:57:37,376 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 01:57:37,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:37,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1049979559, now seen corresponding path program 3 times [2024-06-28 01:57:37,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:37,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651207370] [2024-06-28 01:57:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:37,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:39,886 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 01:57:39,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:39,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651207370] [2024-06-28 01:57:39,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651207370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:39,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:39,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:39,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982393014] [2024-06-28 01:57:39,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:39,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:39,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:39,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:39,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:39,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:39,899 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 01:57:39,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:39,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:39,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:42,222 INFO L124 PetriNetUnfolderBase]: 5693/8389 cut-off events. [2024-06-28 01:57:42,222 INFO L125 PetriNetUnfolderBase]: For 58973/58982 co-relation queries the response was YES. [2024-06-28 01:57:42,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40102 conditions, 8389 events. 5693/8389 cut-off events. For 58973/58982 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 47213 event pairs, 1321 based on Foata normal form. 14/8401 useless extension candidates. Maximal degree in co-relation 40051. Up to 6946 conditions per place. [2024-06-28 01:57:42,275 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 185 selfloop transitions, 55 changer transitions 0/246 dead transitions. [2024-06-28 01:57:42,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 246 transitions, 2387 flow [2024-06-28 01:57:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:57:42,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:57:42,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-28 01:57:42,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5695652173913044 [2024-06-28 01:57:42,276 INFO L175 Difference]: Start difference. First operand has 115 places, 154 transitions, 1578 flow. Second operand 10 states and 262 transitions. [2024-06-28 01:57:42,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 246 transitions, 2387 flow [2024-06-28 01:57:42,392 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 01:57:42,395 INFO L231 Difference]: Finished difference. Result has 118 places, 154 transitions, 1551 flow [2024-06-28 01:57:42,395 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 01:57:42,396 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 68 predicate places. [2024-06-28 01:57:42,396 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 154 transitions, 1551 flow [2024-06-28 01:57:42,396 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 01:57:42,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:42,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:42,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:57:42,396 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 01:57:42,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:42,397 INFO L85 PathProgramCache]: Analyzing trace with hash -399305753, now seen corresponding path program 4 times [2024-06-28 01:57:42,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:42,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218490376] [2024-06-28 01:57:42,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:42,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:44,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:44,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218490376] [2024-06-28 01:57:44,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218490376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:44,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:44,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:44,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942418101] [2024-06-28 01:57:44,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:44,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:44,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:44,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:44,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:45,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:45,010 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 01:57:45,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:45,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:45,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:47,553 INFO L124 PetriNetUnfolderBase]: 6167/9121 cut-off events. [2024-06-28 01:57:47,553 INFO L125 PetriNetUnfolderBase]: For 65804/65885 co-relation queries the response was YES. [2024-06-28 01:57:47,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43433 conditions, 9121 events. 6167/9121 cut-off events. For 65804/65885 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 52299 event pairs, 1172 based on Foata normal form. 49/9165 useless extension candidates. Maximal degree in co-relation 43380. Up to 5790 conditions per place. [2024-06-28 01:57:47,614 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 173 selfloop transitions, 85 changer transitions 0/264 dead transitions. [2024-06-28 01:57:47,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 264 transitions, 2737 flow [2024-06-28 01:57:47,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:57:47,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:57:47,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-06-28 01:57:47,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-06-28 01:57:47,615 INFO L175 Difference]: Start difference. First operand has 118 places, 154 transitions, 1551 flow. Second operand 9 states and 246 transitions. [2024-06-28 01:57:47,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 264 transitions, 2737 flow [2024-06-28 01:57:47,713 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 01:57:47,716 INFO L231 Difference]: Finished difference. Result has 119 places, 170 transitions, 1838 flow [2024-06-28 01:57:47,716 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 01:57:47,717 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 69 predicate places. [2024-06-28 01:57:47,717 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 170 transitions, 1838 flow [2024-06-28 01:57:47,717 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 01:57:47,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:47,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:47,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:57:47,717 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 01:57:47,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:47,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1931113051, now seen corresponding path program 5 times [2024-06-28 01:57:47,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:47,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859335432] [2024-06-28 01:57:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:47,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:50,132 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 01:57:50,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:50,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859335432] [2024-06-28 01:57:50,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859335432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:50,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:50,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:50,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120449443] [2024-06-28 01:57:50,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:50,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:50,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:50,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:50,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:50,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:50,154 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 01:57:50,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:50,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:50,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:52,646 INFO L124 PetriNetUnfolderBase]: 6733/9971 cut-off events. [2024-06-28 01:57:52,646 INFO L125 PetriNetUnfolderBase]: For 81810/81819 co-relation queries the response was YES. [2024-06-28 01:57:52,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51154 conditions, 9971 events. 6733/9971 cut-off events. For 81810/81819 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 58293 event pairs, 1484 based on Foata normal form. 14/9983 useless extension candidates. Maximal degree in co-relation 51099. Up to 7798 conditions per place. [2024-06-28 01:57:52,712 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 198 selfloop transitions, 76 changer transitions 0/280 dead transitions. [2024-06-28 01:57:52,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 280 transitions, 3067 flow [2024-06-28 01:57:52,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:57:52,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:57:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-28 01:57:52,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797101449275363 [2024-06-28 01:57:52,714 INFO L175 Difference]: Start difference. First operand has 119 places, 170 transitions, 1838 flow. Second operand 9 states and 240 transitions. [2024-06-28 01:57:52,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 280 transitions, 3067 flow [2024-06-28 01:57:52,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 280 transitions, 2917 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 01:57:52,895 INFO L231 Difference]: Finished difference. Result has 126 places, 195 transitions, 2280 flow [2024-06-28 01:57:52,895 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=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2280, PETRI_PLACES=126, PETRI_TRANSITIONS=195} [2024-06-28 01:57:52,895 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 76 predicate places. [2024-06-28 01:57:52,896 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 195 transitions, 2280 flow [2024-06-28 01:57:52,896 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 01:57:52,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:52,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:52,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:57:52,896 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 01:57:52,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:52,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1931118631, now seen corresponding path program 6 times [2024-06-28 01:57:52,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:52,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883698053] [2024-06-28 01:57:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:52,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:55,423 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 01:57:55,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:55,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883698053] [2024-06-28 01:57:55,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883698053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:55,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:55,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:55,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382289322] [2024-06-28 01:57:55,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:55,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:55,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:55,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:55,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:55,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:55,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 195 transitions, 2280 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 01:57:55,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:55,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:55,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:57,905 INFO L124 PetriNetUnfolderBase]: 6719/9953 cut-off events. [2024-06-28 01:57:57,906 INFO L125 PetriNetUnfolderBase]: For 82814/82823 co-relation queries the response was YES. [2024-06-28 01:57:57,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52910 conditions, 9953 events. 6719/9953 cut-off events. For 82814/82823 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 58134 event pairs, 1402 based on Foata normal form. 14/9965 useless extension candidates. Maximal degree in co-relation 52851. Up to 7792 conditions per place. [2024-06-28 01:57:57,978 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 188 selfloop transitions, 81 changer transitions 0/275 dead transitions. [2024-06-28 01:57:57,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 275 transitions, 3117 flow [2024-06-28 01:57:57,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:57:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:57:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 01:57:57,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5628019323671497 [2024-06-28 01:57:57,980 INFO L175 Difference]: Start difference. First operand has 126 places, 195 transitions, 2280 flow. Second operand 9 states and 233 transitions. [2024-06-28 01:57:57,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 275 transitions, 3117 flow [2024-06-28 01:57:58,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 275 transitions, 2988 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 01:57:58,222 INFO L231 Difference]: Finished difference. Result has 131 places, 198 transitions, 2422 flow [2024-06-28 01:57:58,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2154, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2422, PETRI_PLACES=131, PETRI_TRANSITIONS=198} [2024-06-28 01:57:58,223 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 81 predicate places. [2024-06-28 01:57:58,223 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 198 transitions, 2422 flow [2024-06-28 01:57:58,223 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 01:57:58,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:58,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:58,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:57:58,223 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 01:57:58,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:58,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1968770704, now seen corresponding path program 1 times [2024-06-28 01:57:58,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:58,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787463496] [2024-06-28 01:57:58,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:58,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:59,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:59,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787463496] [2024-06-28 01:57:59,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787463496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:59,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:59,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:57:59,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72921699] [2024-06-28 01:57:59,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:59,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:57:59,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:59,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:57:59,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:57:59,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:57:59,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 198 transitions, 2422 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:59,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:59,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:57:59,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:01,602 INFO L124 PetriNetUnfolderBase]: 6440/9785 cut-off events. [2024-06-28 01:58:01,603 INFO L125 PetriNetUnfolderBase]: For 89449/89519 co-relation queries the response was YES. [2024-06-28 01:58:01,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52145 conditions, 9785 events. 6440/9785 cut-off events. For 89449/89519 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 58972 event pairs, 1637 based on Foata normal form. 25/9760 useless extension candidates. Maximal degree in co-relation 52084. Up to 8776 conditions per place. [2024-06-28 01:58:01,682 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 189 selfloop transitions, 17 changer transitions 0/220 dead transitions. [2024-06-28 01:58:01,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 220 transitions, 2882 flow [2024-06-28 01:58:01,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:58:01,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:58:01,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 01:58:01,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260869565217391 [2024-06-28 01:58:01,683 INFO L175 Difference]: Start difference. First operand has 131 places, 198 transitions, 2422 flow. Second operand 5 states and 121 transitions. [2024-06-28 01:58:01,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 220 transitions, 2882 flow [2024-06-28 01:58:01,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 220 transitions, 2769 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:01,945 INFO L231 Difference]: Finished difference. Result has 131 places, 198 transitions, 2353 flow [2024-06-28 01:58:01,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2309, PETRI_DIFFERENCE_MINUEND_PLACES=126, 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=2353, PETRI_PLACES=131, PETRI_TRANSITIONS=198} [2024-06-28 01:58:01,946 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 81 predicate places. [2024-06-28 01:58:01,946 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 198 transitions, 2353 flow [2024-06-28 01:58:01,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:01,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:01,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:01,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:58:01,946 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 01:58:01,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:01,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1928522791, now seen corresponding path program 1 times [2024-06-28 01:58:01,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:01,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703021618] [2024-06-28 01:58:01,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:01,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:04,682 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 01:58:04,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:04,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703021618] [2024-06-28 01:58:04,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703021618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:04,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:04,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:04,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162088143] [2024-06-28 01:58:04,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:04,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:04,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:04,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:04,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:04,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:04,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 198 transitions, 2353 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 01:58:04,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:04,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:04,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:06,913 INFO L124 PetriNetUnfolderBase]: 6705/9919 cut-off events. [2024-06-28 01:58:06,913 INFO L125 PetriNetUnfolderBase]: For 91094/91103 co-relation queries the response was YES. [2024-06-28 01:58:06,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53035 conditions, 9919 events. 6705/9919 cut-off events. For 91094/91103 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 57877 event pairs, 1285 based on Foata normal form. 10/9927 useless extension candidates. Maximal degree in co-relation 52973. Up to 9009 conditions per place. [2024-06-28 01:58:06,998 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 227 selfloop transitions, 39 changer transitions 0/272 dead transitions. [2024-06-28 01:58:06,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 272 transitions, 3275 flow [2024-06-28 01:58:07,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:07,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:07,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:58:07,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5516304347826086 [2024-06-28 01:58:07,001 INFO L175 Difference]: Start difference. First operand has 131 places, 198 transitions, 2353 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:58:07,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 272 transitions, 3275 flow [2024-06-28 01:58:07,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 272 transitions, 3251 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:07,363 INFO L231 Difference]: Finished difference. Result has 137 places, 202 transitions, 2502 flow [2024-06-28 01:58:07,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=129, 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=2502, PETRI_PLACES=137, PETRI_TRANSITIONS=202} [2024-06-28 01:58:07,364 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 87 predicate places. [2024-06-28 01:58:07,364 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 202 transitions, 2502 flow [2024-06-28 01:58:07,364 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 01:58:07,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:07,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:07,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:58:07,364 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 01:58:07,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:07,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1928462341, now seen corresponding path program 2 times [2024-06-28 01:58:07,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:07,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708887174] [2024-06-28 01:58:07,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:07,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:09,897 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 01:58:09,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:09,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708887174] [2024-06-28 01:58:09,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708887174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:09,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:09,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:09,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516225213] [2024-06-28 01:58:09,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:09,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:09,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:09,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:09,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:09,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:09,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 202 transitions, 2502 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 01:58:09,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:09,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:09,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:12,394 INFO L124 PetriNetUnfolderBase]: 6755/9993 cut-off events. [2024-06-28 01:58:12,394 INFO L125 PetriNetUnfolderBase]: For 99651/99660 co-relation queries the response was YES. [2024-06-28 01:58:12,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54175 conditions, 9993 events. 6755/9993 cut-off events. For 99651/99660 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 58355 event pairs, 1569 based on Foata normal form. 10/10001 useless extension candidates. Maximal degree in co-relation 54111. Up to 9235 conditions per place. [2024-06-28 01:58:12,464 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 229 selfloop transitions, 36 changer transitions 0/271 dead transitions. [2024-06-28 01:58:12,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 271 transitions, 3308 flow [2024-06-28 01:58:12,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:12,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:58:12,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-28 01:58:12,466 INFO L175 Difference]: Start difference. First operand has 137 places, 202 transitions, 2502 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:58:12,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 271 transitions, 3308 flow [2024-06-28 01:58:12,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 271 transitions, 3192 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:12,711 INFO L231 Difference]: Finished difference. Result has 140 places, 204 transitions, 2515 flow [2024-06-28 01:58:12,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2402, PETRI_DIFFERENCE_MINUEND_PLACES=132, 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=2515, PETRI_PLACES=140, PETRI_TRANSITIONS=204} [2024-06-28 01:58:12,711 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 90 predicate places. [2024-06-28 01:58:12,712 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 204 transitions, 2515 flow [2024-06-28 01:58:12,712 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 01:58:12,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:12,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:12,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:58:12,712 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 01:58:12,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:12,712 INFO L85 PathProgramCache]: Analyzing trace with hash -2080044089, now seen corresponding path program 3 times [2024-06-28 01:58:12,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:12,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467880786] [2024-06-28 01:58:12,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:12,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:15,299 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 01:58:15,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:15,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467880786] [2024-06-28 01:58:15,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467880786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:15,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:15,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:15,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993343070] [2024-06-28 01:58:15,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:15,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:15,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:15,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:15,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:15,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:15,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 204 transitions, 2515 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 01:58:15,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:15,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:15,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:17,694 INFO L124 PetriNetUnfolderBase]: 6805/10065 cut-off events. [2024-06-28 01:58:17,695 INFO L125 PetriNetUnfolderBase]: For 99313/99322 co-relation queries the response was YES. [2024-06-28 01:58:17,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54216 conditions, 10065 events. 6805/10065 cut-off events. For 99313/99322 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 58775 event pairs, 1567 based on Foata normal form. 10/10073 useless extension candidates. Maximal degree in co-relation 54151. Up to 9384 conditions per place. [2024-06-28 01:58:17,772 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 234 selfloop transitions, 28 changer transitions 0/268 dead transitions. [2024-06-28 01:58:17,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 268 transitions, 3271 flow [2024-06-28 01:58:17,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:17,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:58:17,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529891304347826 [2024-06-28 01:58:17,773 INFO L175 Difference]: Start difference. First operand has 140 places, 204 transitions, 2515 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:58:17,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 268 transitions, 3271 flow [2024-06-28 01:58:18,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 268 transitions, 3196 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:58:18,085 INFO L231 Difference]: Finished difference. Result has 142 places, 206 transitions, 2542 flow [2024-06-28 01:58:18,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2440, PETRI_DIFFERENCE_MINUEND_PLACES=134, 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=2542, PETRI_PLACES=142, PETRI_TRANSITIONS=206} [2024-06-28 01:58:18,086 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 92 predicate places. [2024-06-28 01:58:18,086 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 206 transitions, 2542 flow [2024-06-28 01:58:18,086 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 01:58:18,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:18,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:18,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:58:18,086 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 01:58:18,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:18,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2079859391, now seen corresponding path program 1 times [2024-06-28 01:58:18,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:18,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549923652] [2024-06-28 01:58:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:18,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:21,251 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 01:58:21,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:21,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549923652] [2024-06-28 01:58:21,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549923652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:21,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:21,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:21,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683903822] [2024-06-28 01:58:21,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:21,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:21,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:21,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:21,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:21,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:21,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 206 transitions, 2542 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 01:58:21,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:21,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:21,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:23,794 INFO L124 PetriNetUnfolderBase]: 7083/10373 cut-off events. [2024-06-28 01:58:23,794 INFO L125 PetriNetUnfolderBase]: For 109675/109684 co-relation queries the response was YES. [2024-06-28 01:58:23,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55817 conditions, 10373 events. 7083/10373 cut-off events. For 109675/109684 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 59650 event pairs, 1390 based on Foata normal form. 22/10393 useless extension candidates. Maximal degree in co-relation 55751. Up to 8918 conditions per place. [2024-06-28 01:58:23,887 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 242 selfloop transitions, 51 changer transitions 0/299 dead transitions. [2024-06-28 01:58:23,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 299 transitions, 3516 flow [2024-06-28 01:58:23,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:58:23,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:58:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-28 01:58:23,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558695652173913 [2024-06-28 01:58:23,889 INFO L175 Difference]: Start difference. First operand has 142 places, 206 transitions, 2542 flow. Second operand 10 states and 257 transitions. [2024-06-28 01:58:23,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 299 transitions, 3516 flow [2024-06-28 01:58:24,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 299 transitions, 3454 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:58:24,264 INFO L231 Difference]: Finished difference. Result has 146 places, 209 transitions, 2651 flow [2024-06-28 01:58:24,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=136, 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=2651, PETRI_PLACES=146, PETRI_TRANSITIONS=209} [2024-06-28 01:58:24,265 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 96 predicate places. [2024-06-28 01:58:24,265 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 209 transitions, 2651 flow [2024-06-28 01:58:24,265 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 01:58:24,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:24,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:24,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:58:24,266 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 01:58:24,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:24,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2078415695, now seen corresponding path program 4 times [2024-06-28 01:58:24,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:24,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676453247] [2024-06-28 01:58:24,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:24,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:26,806 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 01:58:26,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:26,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676453247] [2024-06-28 01:58:26,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676453247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:26,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:26,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:26,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121870588] [2024-06-28 01:58:26,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:26,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:26,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:26,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:26,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:26,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:26,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 209 transitions, 2651 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 01:58:26,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:26,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:26,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:29,260 INFO L124 PetriNetUnfolderBase]: 7075/10469 cut-off events. [2024-06-28 01:58:29,261 INFO L125 PetriNetUnfolderBase]: For 114349/114358 co-relation queries the response was YES. [2024-06-28 01:58:29,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57228 conditions, 10469 events. 7075/10469 cut-off events. For 114349/114358 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 61486 event pairs, 1337 based on Foata normal form. 10/10477 useless extension candidates. Maximal degree in co-relation 57161. Up to 9620 conditions per place. [2024-06-28 01:58:29,354 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 222 selfloop transitions, 37 changer transitions 0/265 dead transitions. [2024-06-28 01:58:29,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 265 transitions, 3361 flow [2024-06-28 01:58:29,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:29,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:29,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:58:29,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5496894409937888 [2024-06-28 01:58:29,355 INFO L175 Difference]: Start difference. First operand has 146 places, 209 transitions, 2651 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:58:29,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 265 transitions, 3361 flow [2024-06-28 01:58:29,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 265 transitions, 3224 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 01:58:29,863 INFO L231 Difference]: Finished difference. Result has 145 places, 209 transitions, 2602 flow [2024-06-28 01:58:29,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=138, 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=2602, PETRI_PLACES=145, PETRI_TRANSITIONS=209} [2024-06-28 01:58:29,864 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 95 predicate places. [2024-06-28 01:58:29,864 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 209 transitions, 2602 flow [2024-06-28 01:58:29,864 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 01:58:29,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:29,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:29,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:58:29,865 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 01:58:29,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:29,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2078230997, now seen corresponding path program 2 times [2024-06-28 01:58:29,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:29,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2915084] [2024-06-28 01:58:29,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:29,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:32,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:32,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2915084] [2024-06-28 01:58:32,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2915084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:32,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:32,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:32,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576723741] [2024-06-28 01:58:32,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:32,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:32,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:32,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:32,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:32,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:32,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 209 transitions, 2602 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 01:58:32,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:32,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:32,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:35,257 INFO L124 PetriNetUnfolderBase]: 7353/10773 cut-off events. [2024-06-28 01:58:35,258 INFO L125 PetriNetUnfolderBase]: For 123067/123076 co-relation queries the response was YES. [2024-06-28 01:58:35,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58201 conditions, 10773 events. 7353/10773 cut-off events. For 123067/123076 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 62329 event pairs, 1375 based on Foata normal form. 22/10793 useless extension candidates. Maximal degree in co-relation 58133. Up to 9020 conditions per place. [2024-06-28 01:58:35,348 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 218 selfloop transitions, 54 changer transitions 0/278 dead transitions. [2024-06-28 01:58:35,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 278 transitions, 3432 flow [2024-06-28 01:58:35,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:35,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:35,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:58:35,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-28 01:58:35,352 INFO L175 Difference]: Start difference. First operand has 145 places, 209 transitions, 2602 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:58:35,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 278 transitions, 3432 flow [2024-06-28 01:58:35,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 278 transitions, 3345 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:58:35,668 INFO L231 Difference]: Finished difference. Result has 147 places, 212 transitions, 2705 flow [2024-06-28 01:58:35,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2705, PETRI_PLACES=147, PETRI_TRANSITIONS=212} [2024-06-28 01:58:35,668 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 97 predicate places. [2024-06-28 01:58:35,668 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 212 transitions, 2705 flow [2024-06-28 01:58:35,669 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 01:58:35,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:35,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:35,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:58:35,669 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 01:58:35,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:35,669 INFO L85 PathProgramCache]: Analyzing trace with hash 728077681, now seen corresponding path program 3 times [2024-06-28 01:58:35,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:35,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789009473] [2024-06-28 01:58:35,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:35,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:38,707 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 01:58:38,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:38,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789009473] [2024-06-28 01:58:38,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789009473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:38,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:38,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:38,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129291387] [2024-06-28 01:58:38,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:38,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:38,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:38,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:38,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:38,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:38,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 212 transitions, 2705 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 01:58:38,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:38,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:38,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:41,163 INFO L124 PetriNetUnfolderBase]: 7615/11291 cut-off events. [2024-06-28 01:58:41,163 INFO L125 PetriNetUnfolderBase]: For 134867/134940 co-relation queries the response was YES. [2024-06-28 01:58:41,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61572 conditions, 11291 events. 7615/11291 cut-off events. For 134867/134940 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 66836 event pairs, 1220 based on Foata normal form. 54/11340 useless extension candidates. Maximal degree in co-relation 61503. Up to 8974 conditions per place. [2024-06-28 01:58:41,277 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 219 selfloop transitions, 53 changer transitions 0/278 dead transitions. [2024-06-28 01:58:41,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 278 transitions, 3649 flow [2024-06-28 01:58:41,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:41,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:41,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-28 01:58:41,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745341614906833 [2024-06-28 01:58:41,279 INFO L175 Difference]: Start difference. First operand has 147 places, 212 transitions, 2705 flow. Second operand 7 states and 185 transitions. [2024-06-28 01:58:41,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 278 transitions, 3649 flow [2024-06-28 01:58:41,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 278 transitions, 3489 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 01:58:41,687 INFO L231 Difference]: Finished difference. Result has 148 places, 214 transitions, 2713 flow [2024-06-28 01:58:41,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2713, PETRI_PLACES=148, PETRI_TRANSITIONS=214} [2024-06-28 01:58:41,687 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 98 predicate places. [2024-06-28 01:58:41,687 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 214 transitions, 2713 flow [2024-06-28 01:58:41,687 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 01:58:41,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:41,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:41,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:58:41,688 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 01:58:41,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:41,688 INFO L85 PathProgramCache]: Analyzing trace with hash 736648561, now seen corresponding path program 4 times [2024-06-28 01:58:41,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:41,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507529871] [2024-06-28 01:58:41,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:41,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:44,929 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 01:58:44,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:44,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507529871] [2024-06-28 01:58:44,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507529871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:44,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:44,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:44,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757923577] [2024-06-28 01:58:44,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:44,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:44,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:44,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:44,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:44,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:44,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 214 transitions, 2713 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 01:58:44,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:44,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:44,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:47,557 INFO L124 PetriNetUnfolderBase]: 8111/12091 cut-off events. [2024-06-28 01:58:47,557 INFO L125 PetriNetUnfolderBase]: For 137518/137591 co-relation queries the response was YES. [2024-06-28 01:58:47,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64597 conditions, 12091 events. 8111/12091 cut-off events. For 137518/137591 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 72795 event pairs, 1218 based on Foata normal form. 54/12140 useless extension candidates. Maximal degree in co-relation 64527. Up to 8104 conditions per place. [2024-06-28 01:58:47,674 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 220 selfloop transitions, 62 changer transitions 0/288 dead transitions. [2024-06-28 01:58:47,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 288 transitions, 3791 flow [2024-06-28 01:58:47,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:47,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:47,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-28 01:58:47,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-06-28 01:58:47,675 INFO L175 Difference]: Start difference. First operand has 148 places, 214 transitions, 2713 flow. Second operand 7 states and 189 transitions. [2024-06-28 01:58:47,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 288 transitions, 3791 flow [2024-06-28 01:58:48,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 288 transitions, 3677 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:48,136 INFO L231 Difference]: Finished difference. Result has 151 places, 219 transitions, 2848 flow [2024-06-28 01:58:48,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2599, PETRI_DIFFERENCE_MINUEND_PLACES=143, 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=2848, PETRI_PLACES=151, PETRI_TRANSITIONS=219} [2024-06-28 01:58:48,137 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 101 predicate places. [2024-06-28 01:58:48,137 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 219 transitions, 2848 flow [2024-06-28 01:58:48,137 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 01:58:48,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:48,137 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 01:58:48,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:58:48,137 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 01:58:48,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:48,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1730362516, now seen corresponding path program 1 times [2024-06-28 01:58:48,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:48,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289457865] [2024-06-28 01:58:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:48,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:50,526 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 01:58:50,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:50,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289457865] [2024-06-28 01:58:50,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289457865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:50,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:50,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:50,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638459936] [2024-06-28 01:58:50,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:50,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:50,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:50,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:50,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:50,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:50,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 219 transitions, 2848 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 01:58:50,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:50,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:50,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:55,314 INFO L124 PetriNetUnfolderBase]: 15340/22680 cut-off events. [2024-06-28 01:58:55,314 INFO L125 PetriNetUnfolderBase]: For 290175/290214 co-relation queries the response was YES. [2024-06-28 01:58:55,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125236 conditions, 22680 events. 15340/22680 cut-off events. For 290175/290214 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 147690 event pairs, 2775 based on Foata normal form. 85/22763 useless extension candidates. Maximal degree in co-relation 125164. Up to 10614 conditions per place. [2024-06-28 01:58:55,529 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 312 selfloop transitions, 246 changer transitions 0/564 dead transitions. [2024-06-28 01:58:55,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 564 transitions, 7489 flow [2024-06-28 01:58:55,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:58:55,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:58:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 369 transitions. [2024-06-28 01:58:55,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.617056856187291 [2024-06-28 01:58:55,531 INFO L175 Difference]: Start difference. First operand has 151 places, 219 transitions, 2848 flow. Second operand 13 states and 369 transitions. [2024-06-28 01:58:55,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 564 transitions, 7489 flow [2024-06-28 01:58:56,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 564 transitions, 7367 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:56,742 INFO L231 Difference]: Finished difference. Result has 167 places, 375 transitions, 5715 flow [2024-06-28 01:58:56,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=148, 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=5715, PETRI_PLACES=167, PETRI_TRANSITIONS=375} [2024-06-28 01:58:56,743 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 117 predicate places. [2024-06-28 01:58:56,743 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 375 transitions, 5715 flow [2024-06-28 01:58:56,743 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 01:58:56,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:56,744 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 01:58:56,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:58:56,744 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 01:58:56,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:56,744 INFO L85 PathProgramCache]: Analyzing trace with hash 575520254, now seen corresponding path program 2 times [2024-06-28 01:58:56,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:56,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060085227] [2024-06-28 01:58:56,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:56,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:59,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:59,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:59,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060085227] [2024-06-28 01:58:59,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060085227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:59,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:59,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:59,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491391392] [2024-06-28 01:58:59,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:59,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:59,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:59,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:59,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:59,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:58:59,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 375 transitions, 5715 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 01:58:59,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:59,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:58:59,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:06,052 INFO L124 PetriNetUnfolderBase]: 18395/27538 cut-off events. [2024-06-28 01:59:06,052 INFO L125 PetriNetUnfolderBase]: For 417342/417395 co-relation queries the response was YES. [2024-06-28 01:59:06,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160002 conditions, 27538 events. 18395/27538 cut-off events. For 417342/417395 co-relation queries the response was YES. Maximal size of possible extension queue 1153. Compared 188185 event pairs, 3330 based on Foata normal form. 95/27631 useless extension candidates. Maximal degree in co-relation 159922. Up to 8551 conditions per place. [2024-06-28 01:59:06,363 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 259 selfloop transitions, 258 changer transitions 0/523 dead transitions. [2024-06-28 01:59:06,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 523 transitions, 7836 flow [2024-06-28 01:59:06,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:59:06,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:59:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 308 transitions. [2024-06-28 01:59:06,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2024-06-28 01:59:06,364 INFO L175 Difference]: Start difference. First operand has 167 places, 375 transitions, 5715 flow. Second operand 11 states and 308 transitions. [2024-06-28 01:59:06,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 523 transitions, 7836 flow [2024-06-28 01:59:08,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 523 transitions, 7596 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:08,101 INFO L231 Difference]: Finished difference. Result has 177 places, 383 transitions, 6329 flow [2024-06-28 01:59:08,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5475, PETRI_DIFFERENCE_MINUEND_PLACES=164, 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=6329, PETRI_PLACES=177, PETRI_TRANSITIONS=383} [2024-06-28 01:59:08,102 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 127 predicate places. [2024-06-28 01:59:08,102 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 383 transitions, 6329 flow [2024-06-28 01:59:08,103 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 01:59:08,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:08,103 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 01:59:08,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:59:08,103 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 01:59:08,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:08,103 INFO L85 PathProgramCache]: Analyzing trace with hash 577394204, now seen corresponding path program 3 times [2024-06-28 01:59:08,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:08,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437887529] [2024-06-28 01:59:08,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:08,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:11,158 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 01:59:11,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:11,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437887529] [2024-06-28 01:59:11,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437887529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:11,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:11,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:11,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811071112] [2024-06-28 01:59:11,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:11,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:11,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:11,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:11,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:11,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:59:11,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 383 transitions, 6329 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 01:59:11,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:11,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:59:11,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:18,861 INFO L124 PetriNetUnfolderBase]: 22549/33861 cut-off events. [2024-06-28 01:59:18,862 INFO L125 PetriNetUnfolderBase]: For 621717/621770 co-relation queries the response was YES. [2024-06-28 01:59:19,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195382 conditions, 33861 events. 22549/33861 cut-off events. For 621717/621770 co-relation queries the response was YES. Maximal size of possible extension queue 1446. Compared 242284 event pairs, 6247 based on Foata normal form. 151/34010 useless extension candidates. Maximal degree in co-relation 195299. Up to 20492 conditions per place. [2024-06-28 01:59:19,286 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 274 selfloop transitions, 251 changer transitions 0/531 dead transitions. [2024-06-28 01:59:19,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 531 transitions, 8431 flow [2024-06-28 01:59:19,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:59:19,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:59:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 328 transitions. [2024-06-28 01:59:19,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-06-28 01:59:19,287 INFO L175 Difference]: Start difference. First operand has 177 places, 383 transitions, 6329 flow. Second operand 12 states and 328 transitions. [2024-06-28 01:59:19,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 531 transitions, 8431 flow [2024-06-28 01:59:22,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 531 transitions, 7958 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-28 01:59:22,341 INFO L231 Difference]: Finished difference. Result has 183 places, 390 transitions, 6588 flow [2024-06-28 01:59:22,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5868, PETRI_DIFFERENCE_MINUEND_PLACES=170, 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=6588, PETRI_PLACES=183, PETRI_TRANSITIONS=390} [2024-06-28 01:59:22,342 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 133 predicate places. [2024-06-28 01:59:22,342 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 390 transitions, 6588 flow [2024-06-28 01:59:22,342 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 01:59:22,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:22,342 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 01:59:22,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:59:22,342 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 01:59:22,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:22,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1302498144, now seen corresponding path program 4 times [2024-06-28 01:59:22,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:22,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77548307] [2024-06-28 01:59:22,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:22,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:25,515 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 01:59:25,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:25,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77548307] [2024-06-28 01:59:25,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77548307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:25,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:25,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:25,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455258445] [2024-06-28 01:59:25,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:25,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:25,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:25,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:25,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:25,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:59:25,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 390 transitions, 6588 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 01:59:25,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:25,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:59:25,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:33,587 INFO L124 PetriNetUnfolderBase]: 23957/36021 cut-off events. [2024-06-28 01:59:33,588 INFO L125 PetriNetUnfolderBase]: For 647427/647480 co-relation queries the response was YES. [2024-06-28 01:59:33,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204562 conditions, 36021 events. 23957/36021 cut-off events. For 647427/647480 co-relation queries the response was YES. Maximal size of possible extension queue 1566. Compared 261891 event pairs, 7560 based on Foata normal form. 167/36186 useless extension candidates. Maximal degree in co-relation 204477. Up to 26527 conditions per place. [2024-06-28 01:59:34,078 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 266 selfloop transitions, 249 changer transitions 0/521 dead transitions. [2024-06-28 01:59:34,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 521 transitions, 8388 flow [2024-06-28 01:59:34,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:59:34,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:59:34,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 317 transitions. [2024-06-28 01:59:34,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5742753623188406 [2024-06-28 01:59:34,080 INFO L175 Difference]: Start difference. First operand has 183 places, 390 transitions, 6588 flow. Second operand 12 states and 317 transitions. [2024-06-28 01:59:34,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 521 transitions, 8388 flow [2024-06-28 01:59:37,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 521 transitions, 7959 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-06-28 01:59:37,578 INFO L231 Difference]: Finished difference. Result has 187 places, 393 transitions, 6779 flow [2024-06-28 01:59:37,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6179, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6779, PETRI_PLACES=187, PETRI_TRANSITIONS=393} [2024-06-28 01:59:37,579 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 137 predicate places. [2024-06-28 01:59:37,579 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 393 transitions, 6779 flow [2024-06-28 01:59:37,579 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 01:59:37,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:37,580 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 01:59:37,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:59:37,580 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:37,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:37,580 INFO L85 PathProgramCache]: Analyzing trace with hash -286889466, now seen corresponding path program 5 times [2024-06-28 01:59:37,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:37,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702370048] [2024-06-28 01:59:37,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:37,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat