./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe016_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/safe016_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:59:24,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:59:24,278 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:59:24,282 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:59:24,283 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:59:24,314 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:59:24,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:59:24,318 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:59:24,319 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:59:24,326 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:59:24,327 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:59:24,327 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:59:24,328 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:59:24,329 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:59:24,329 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:59:24,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:59:24,330 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:59:24,330 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:59:24,331 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:59:24,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:59:24,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:59:24,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:59:24,332 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:59:24,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:59:24,332 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:59:24,333 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:59:24,333 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:59:24,333 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:59:24,334 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:59:24,334 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:59:24,335 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:59:24,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:59:24,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:59:24,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:59:24,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:59:24,336 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:59:24,336 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:59:24,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:59:24,337 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:59:24,337 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:59:24,337 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:59:24,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:59:24,338 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:59:24,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:59:24,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:59:24,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:59:24,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:59:24,627 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:59:24,628 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:59:24,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe016_rmo.oepc.yml/witness.yml [2024-06-27 18:59:24,897 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:59:24,898 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:59:24,899 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i [2024-06-27 18:59:26,079 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:59:26,318 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:59:26,318 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i [2024-06-27 18:59:26,343 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/064620af3/f09f68fba812400bae4e4a7e11129d68/FLAG01201debb [2024-06-27 18:59:26,354 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/064620af3/f09f68fba812400bae4e4a7e11129d68 [2024-06-27 18:59:26,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:59:26,355 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:59:26,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:59:26,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:59:26,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:59:26,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:59:24" (1/2) ... [2024-06-27 18:59:26,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66bfcbb2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:59:26, skipping insertion in model container [2024-06-27 18:59:26,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:59:24" (1/2) ... [2024-06-27 18:59:26,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@532bdf52 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:59:26, skipping insertion in model container [2024-06-27 18:59:26,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:59:26" (2/2) ... [2024-06-27 18:59:26,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66bfcbb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:59:26, skipping insertion in model container [2024-06-27 18:59:26,369 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:59:26" (2/2) ... [2024-06-27 18:59:26,370 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:59:26,586 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:59:26,587 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_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$read_delayed_var == 2))))) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) [2024-06-27 18:59:26,587 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$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 || y$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) [2024-06-27 18:59:26,587 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_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$read_delayed_var == 2))))) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) [2024-06-27 18:59:26,587 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$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 || y$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) [2024-06-27 18:59:26,588 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:59:26,588 INFO L106 edCorrectnessWitness]: ghost_update [L852-L852] multithreaded = 1; [2024-06-27 18:59:26,634 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:59:26,828 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/safe016_rmo.oepc.i[993,1006] [2024-06-27 18:59:27,109 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:59:27,123 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:59:27,175 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/safe016_rmo.oepc.i[993,1006] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:59:27,260 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:59:27,311 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:59:27,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:59:27 WrapperNode [2024-06-27 18:59:27,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:59:27,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:59:27,313 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:59:27,313 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:59:27,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:59:27" (1/1) ... [2024-06-27 18:59:27,353 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:59:27" (1/1) ... [2024-06-27 18:59:27,400 INFO L138 Inliner]: procedures = 176, calls = 93, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 257 [2024-06-27 18:59:27,401 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:59:27,401 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:59:27,402 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:59:27,402 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:59:27,412 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:59:27" (1/1) ... [2024-06-27 18:59:27,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:59:27" (1/1) ... [2024-06-27 18:59:27,430 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:59:27" (1/1) ... [2024-06-27 18:59:27,461 INFO L175 MemorySlicer]: Split 48 memory accesses to 2 slices as follows [2, 46]. 96 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]. [2024-06-27 18:59:27,461 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:59:27" (1/1) ... [2024-06-27 18:59:27,461 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:59:27" (1/1) ... [2024-06-27 18:59:27,480 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:59:27" (1/1) ... [2024-06-27 18:59:27,496 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:59:27" (1/1) ... [2024-06-27 18:59:27,499 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:59:27" (1/1) ... [2024-06-27 18:59:27,501 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:59:27" (1/1) ... [2024-06-27 18:59:27,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:59:27,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:59:27,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:59:27,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:59:27,526 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:59:27" (1/1) ... [2024-06-27 18:59:27,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:59:27,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:59:27,557 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) [2024-06-27 18:59:27,583 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 [2024-06-27 18:59:27,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 18:59:27,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 18:59:27,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 18:59:27,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 18:59:27,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:59:27,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:59:27,598 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:59:27,599 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:59:27,599 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:59:27,599 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:59:27,600 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:59:27,600 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:59:27,600 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 18:59:27,603 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 18:59:27,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:59:27,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 18:59:27,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:59:27,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:59:27,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:59:27,605 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:59:27,756 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:59:27,759 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:59:28,257 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:59:28,257 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:59:28,786 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:59:28,786 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:59:28,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:59:28 BoogieIcfgContainer [2024-06-27 18:59:28,787 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:59:28,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:59:28,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:59:28,793 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:59:28,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:59:24" (1/4) ... [2024-06-27 18:59:28,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ce61b8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:59:28, skipping insertion in model container [2024-06-27 18:59:28,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:59:26" (2/4) ... [2024-06-27 18:59:28,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ce61b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:59:28, skipping insertion in model container [2024-06-27 18:59:28,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:59:27" (3/4) ... [2024-06-27 18:59:28,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ce61b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:59:28, skipping insertion in model container [2024-06-27 18:59:28,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:59:28" (4/4) ... [2024-06-27 18:59:28,796 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_rmo.oepc.i [2024-06-27 18:59:28,813 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:59:28,813 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:59:28,813 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:59:28,886 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:59:28,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 57 transitions, 130 flow [2024-06-27 18:59:28,964 INFO L124 PetriNetUnfolderBase]: 1/53 cut-off events. [2024-06-27 18:59:28,965 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:59:28,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 53 events. 1/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-06-27 18:59:28,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 57 transitions, 130 flow [2024-06-27 18:59:28,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 112 flow [2024-06-27 18:59:28,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:59:28,996 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;@16b56f82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:59:28,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:59:29,003 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:59:29,004 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 18:59:29,004 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:59:29,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:29,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:59:29,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:29,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:29,010 INFO L85 PathProgramCache]: Analyzing trace with hash 776595507, now seen corresponding path program 1 times [2024-06-27 18:59:29,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:29,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435381660] [2024-06-27 18:59:29,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:29,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:31,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:31,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435381660] [2024-06-27 18:59:31,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435381660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:31,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:31,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:59:31,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975085634] [2024-06-27 18:59:31,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:31,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:59:31,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:31,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:59:31,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:59:31,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2024-06-27 18:59:31,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-06-27 18:59:31,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:31,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2024-06-27 18:59:31,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:35,428 INFO L124 PetriNetUnfolderBase]: 15016/21237 cut-off events. [2024-06-27 18:59:35,428 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-06-27 18:59:35,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41633 conditions, 21237 events. 15016/21237 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 129133 event pairs, 10750 based on Foata normal form. 0/20612 useless extension candidates. Maximal degree in co-relation 41620. Up to 20120 conditions per place. [2024-06-27 18:59:35,591 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 56 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-06-27 18:59:35,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 289 flow [2024-06-27 18:59:35,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:59:35,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:59:35,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-06-27 18:59:35,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6491228070175439 [2024-06-27 18:59:35,607 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 112 flow. Second operand 3 states and 111 transitions. [2024-06-27 18:59:35,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 289 flow [2024-06-27 18:59:35,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 72 transitions, 282 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 18:59:35,613 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 154 flow [2024-06-27 18:59:35,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-06-27 18:59:35,617 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2024-06-27 18:59:35,617 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 154 flow [2024-06-27 18:59:35,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-06-27 18:59:35,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:35,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:35,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:59:35,618 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:35,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:35,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1015731104, now seen corresponding path program 1 times [2024-06-27 18:59:35,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:35,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929140350] [2024-06-27 18:59:35,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:35,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:38,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:38,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:38,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929140350] [2024-06-27 18:59:38,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929140350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:38,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:38,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:59:38,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752556099] [2024-06-27 18:59:38,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:38,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:59:38,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:38,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:59:38,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:59:38,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2024-06-27 18:59:38,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-06-27 18:59:38,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:38,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2024-06-27 18:59:38,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:42,301 INFO L124 PetriNetUnfolderBase]: 15006/20430 cut-off events. [2024-06-27 18:59:42,301 INFO L125 PetriNetUnfolderBase]: For 3705/3713 co-relation queries the response was YES. [2024-06-27 18:59:42,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46161 conditions, 20430 events. 15006/20430 cut-off events. For 3705/3713 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 116333 event pairs, 8671 based on Foata normal form. 7/20435 useless extension candidates. Maximal degree in co-relation 46149. Up to 20065 conditions per place. [2024-06-27 18:59:42,406 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 77 selfloop transitions, 13 changer transitions 0/100 dead transitions. [2024-06-27 18:59:42,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 100 transitions, 452 flow [2024-06-27 18:59:42,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:59:42,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:59:42,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-06-27 18:59:42,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-06-27 18:59:42,411 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 154 flow. Second operand 4 states and 150 transitions. [2024-06-27 18:59:42,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 100 transitions, 452 flow [2024-06-27 18:59:42,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 100 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:59:42,415 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 237 flow [2024-06-27 18:59:42,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=237, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-06-27 18:59:42,421 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2024-06-27 18:59:42,422 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 237 flow [2024-06-27 18:59:42,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-06-27 18:59:42,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:42,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:42,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:59:42,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:42,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:42,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1422891944, now seen corresponding path program 1 times [2024-06-27 18:59:42,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:42,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817576309] [2024-06-27 18:59:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:42,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:45,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:45,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817576309] [2024-06-27 18:59:45,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817576309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:45,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:45,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:59:45,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457467331] [2024-06-27 18:59:45,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:45,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:59:45,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:45,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:59:45,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:59:45,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 18:59:45,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:45,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:45,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 18:59:45,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:49,305 INFO L124 PetriNetUnfolderBase]: 18209/24511 cut-off events. [2024-06-27 18:59:49,306 INFO L125 PetriNetUnfolderBase]: For 14144/14144 co-relation queries the response was YES. [2024-06-27 18:59:49,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62229 conditions, 24511 events. 18209/24511 cut-off events. For 14144/14144 co-relation queries the response was YES. Maximal size of possible extension queue 887. Compared 137610 event pairs, 7737 based on Foata normal form. 7/24516 useless extension candidates. Maximal degree in co-relation 62214. Up to 24085 conditions per place. [2024-06-27 18:59:49,515 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 120 selfloop transitions, 21 changer transitions 0/150 dead transitions. [2024-06-27 18:59:49,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 150 transitions, 810 flow [2024-06-27 18:59:49,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:59:49,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:59:49,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-06-27 18:59:49,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6807017543859649 [2024-06-27 18:59:49,522 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 237 flow. Second operand 5 states and 194 transitions. [2024-06-27 18:59:49,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 150 transitions, 810 flow [2024-06-27 18:59:49,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 150 transitions, 810 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 18:59:49,569 INFO L231 Difference]: Finished difference. Result has 73 places, 83 transitions, 432 flow [2024-06-27 18:59:49,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=432, PETRI_PLACES=73, PETRI_TRANSITIONS=83} [2024-06-27 18:59:49,570 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2024-06-27 18:59:49,571 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 83 transitions, 432 flow [2024-06-27 18:59:49,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:49,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:49,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:49,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:59:49,572 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:49,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:49,573 INFO L85 PathProgramCache]: Analyzing trace with hash -739454555, now seen corresponding path program 1 times [2024-06-27 18:59:49,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:49,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369377665] [2024-06-27 18:59:49,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:49,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:52,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:52,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369377665] [2024-06-27 18:59:52,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369377665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:52,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:52,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:59:52,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009062125] [2024-06-27 18:59:52,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:52,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:59:52,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:52,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:59:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:59:52,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 18:59:52,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 83 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:52,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:52,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 18:59:52,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:56,436 INFO L124 PetriNetUnfolderBase]: 18535/24981 cut-off events. [2024-06-27 18:59:56,436 INFO L125 PetriNetUnfolderBase]: For 30856/30856 co-relation queries the response was YES. [2024-06-27 18:59:56,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73445 conditions, 24981 events. 18535/24981 cut-off events. For 30856/30856 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 141655 event pairs, 5896 based on Foata normal form. 32/25011 useless extension candidates. Maximal degree in co-relation 73425. Up to 24129 conditions per place. [2024-06-27 18:59:56,621 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 138 selfloop transitions, 24 changer transitions 0/171 dead transitions. [2024-06-27 18:59:56,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 171 transitions, 1027 flow [2024-06-27 18:59:56,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:59:56,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:59:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-06-27 18:59:56,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6695906432748538 [2024-06-27 18:59:56,625 INFO L175 Difference]: Start difference. First operand has 73 places, 83 transitions, 432 flow. Second operand 6 states and 229 transitions. [2024-06-27 18:59:56,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 171 transitions, 1027 flow [2024-06-27 18:59:56,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 171 transitions, 1023 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 18:59:56,653 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 505 flow [2024-06-27 18:59:56,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=505, PETRI_PLACES=78, PETRI_TRANSITIONS=85} [2024-06-27 18:59:56,655 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 15 predicate places. [2024-06-27 18:59:56,655 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 505 flow [2024-06-27 18:59:56,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:56,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:56,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:56,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:59:56,657 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:56,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:56,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1895844283, now seen corresponding path program 1 times [2024-06-27 18:59:56,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:56,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312668097] [2024-06-27 18:59:56,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:56,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:58,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:58,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:58,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312668097] [2024-06-27 18:59:58,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312668097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:58,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:58,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:59:58,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947042323] [2024-06-27 18:59:58,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:58,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:59:58,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:58,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:59:58,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:59:58,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-27 18:59:58,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 85 transitions, 505 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:58,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:58,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-27 18:59:58,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:01,757 INFO L124 PetriNetUnfolderBase]: 18526/26124 cut-off events. [2024-06-27 19:00:01,757 INFO L125 PetriNetUnfolderBase]: For 42450/42450 co-relation queries the response was YES. [2024-06-27 19:00:01,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79393 conditions, 26124 events. 18526/26124 cut-off events. For 42450/42450 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 160342 event pairs, 8356 based on Foata normal form. 3/26126 useless extension candidates. Maximal degree in co-relation 79369. Up to 24751 conditions per place. [2024-06-27 19:00:01,950 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 103 selfloop transitions, 12 changer transitions 0/123 dead transitions. [2024-06-27 19:00:01,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 123 transitions, 864 flow [2024-06-27 19:00:01,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:00:01,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:00:01,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-06-27 19:00:01,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228070175438596 [2024-06-27 19:00:01,956 INFO L175 Difference]: Start difference. First operand has 78 places, 85 transitions, 505 flow. Second operand 5 states and 149 transitions. [2024-06-27 19:00:01,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 123 transitions, 864 flow [2024-06-27 19:00:01,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 123 transitions, 805 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 19:00:01,982 INFO L231 Difference]: Finished difference. Result has 80 places, 93 transitions, 561 flow [2024-06-27 19:00:01,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=561, PETRI_PLACES=80, PETRI_TRANSITIONS=93} [2024-06-27 19:00:01,983 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 17 predicate places. [2024-06-27 19:00:01,983 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 93 transitions, 561 flow [2024-06-27 19:00:01,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:01,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:01,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:01,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:00:01,983 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:01,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:01,984 INFO L85 PathProgramCache]: Analyzing trace with hash -691234204, now seen corresponding path program 1 times [2024-06-27 19:00:01,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:01,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16697512] [2024-06-27 19:00:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:01,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:04,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:04,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16697512] [2024-06-27 19:00:04,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16697512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:04,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:04,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:00:04,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622489760] [2024-06-27 19:00:04,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:04,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:00:04,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:04,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:00:04,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:00:04,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-27 19:00:04,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 93 transitions, 561 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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) [2024-06-27 19:00:04,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:04,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-27 19:00:04,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:08,723 INFO L124 PetriNetUnfolderBase]: 18568/25206 cut-off events. [2024-06-27 19:00:08,723 INFO L125 PetriNetUnfolderBase]: For 45930/45930 co-relation queries the response was YES. [2024-06-27 19:00:08,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79452 conditions, 25206 events. 18568/25206 cut-off events. For 45930/45930 co-relation queries the response was YES. Maximal size of possible extension queue 907. Compared 144995 event pairs, 7373 based on Foata normal form. 6/25210 useless extension candidates. Maximal degree in co-relation 79425. Up to 24576 conditions per place. [2024-06-27 19:00:08,889 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 116 selfloop transitions, 30 changer transitions 0/154 dead transitions. [2024-06-27 19:00:08,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 154 transitions, 1058 flow [2024-06-27 19:00:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:00:08,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:00:08,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-06-27 19:00:08,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5672514619883041 [2024-06-27 19:00:08,894 INFO L175 Difference]: Start difference. First operand has 80 places, 93 transitions, 561 flow. Second operand 6 states and 194 transitions. [2024-06-27 19:00:08,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 154 transitions, 1058 flow [2024-06-27 19:00:08,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 154 transitions, 1046 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-27 19:00:08,940 INFO L231 Difference]: Finished difference. Result has 86 places, 98 transitions, 675 flow [2024-06-27 19:00:08,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=675, PETRI_PLACES=86, PETRI_TRANSITIONS=98} [2024-06-27 19:00:08,941 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 23 predicate places. [2024-06-27 19:00:08,941 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 98 transitions, 675 flow [2024-06-27 19:00:08,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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) [2024-06-27 19:00:08,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:08,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:08,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:00:08,942 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:08,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:08,942 INFO L85 PathProgramCache]: Analyzing trace with hash 840253402, now seen corresponding path program 2 times [2024-06-27 19:00:08,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:08,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211031088] [2024-06-27 19:00:08,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:08,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:11,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:11,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:11,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211031088] [2024-06-27 19:00:11,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211031088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:11,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:11,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:00:11,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803943657] [2024-06-27 19:00:11,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:11,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:00:11,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:11,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:00:11,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:00:11,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-27 19:00:11,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 98 transitions, 675 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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) [2024-06-27 19:00:11,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:11,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-27 19:00:11,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:15,198 INFO L124 PetriNetUnfolderBase]: 18523/25119 cut-off events. [2024-06-27 19:00:15,198 INFO L125 PetriNetUnfolderBase]: For 51107/51107 co-relation queries the response was YES. [2024-06-27 19:00:15,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80522 conditions, 25119 events. 18523/25119 cut-off events. For 51107/51107 co-relation queries the response was YES. Maximal size of possible extension queue 907. Compared 144091 event pairs, 7401 based on Foata normal form. 3/25118 useless extension candidates. Maximal degree in co-relation 80491. Up to 24507 conditions per place. [2024-06-27 19:00:15,380 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 109 selfloop transitions, 33 changer transitions 0/150 dead transitions. [2024-06-27 19:00:15,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 150 transitions, 1107 flow [2024-06-27 19:00:15,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:00:15,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:00:15,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-06-27 19:00:15,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5497076023391813 [2024-06-27 19:00:15,382 INFO L175 Difference]: Start difference. First operand has 86 places, 98 transitions, 675 flow. Second operand 6 states and 188 transitions. [2024-06-27 19:00:15,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 150 transitions, 1107 flow [2024-06-27 19:00:15,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 150 transitions, 1062 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 19:00:15,423 INFO L231 Difference]: Finished difference. Result has 90 places, 101 transitions, 751 flow [2024-06-27 19:00:15,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=751, PETRI_PLACES=90, PETRI_TRANSITIONS=101} [2024-06-27 19:00:15,424 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 27 predicate places. [2024-06-27 19:00:15,425 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 101 transitions, 751 flow [2024-06-27 19:00:15,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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) [2024-06-27 19:00:15,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:15,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:15,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:00:15,426 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:15,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:15,426 INFO L85 PathProgramCache]: Analyzing trace with hash -104411272, now seen corresponding path program 1 times [2024-06-27 19:00:15,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:15,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039241185] [2024-06-27 19:00:15,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:15,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:17,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:17,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039241185] [2024-06-27 19:00:17,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039241185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:17,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:17,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:00:17,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98192127] [2024-06-27 19:00:17,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:17,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:00:17,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:17,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:00:17,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:00:17,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-27 19:00:17,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 101 transitions, 751 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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) [2024-06-27 19:00:17,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:17,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-27 19:00:17,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:21,181 INFO L124 PetriNetUnfolderBase]: 18508/26082 cut-off events. [2024-06-27 19:00:21,182 INFO L125 PetriNetUnfolderBase]: For 55426/55426 co-relation queries the response was YES. [2024-06-27 19:00:21,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82400 conditions, 26082 events. 18508/26082 cut-off events. For 55426/55426 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 159296 event pairs, 7963 based on Foata normal form. 6/26087 useless extension candidates. Maximal degree in co-relation 82367. Up to 24656 conditions per place. [2024-06-27 19:00:21,424 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 125 selfloop transitions, 16 changer transitions 0/149 dead transitions. [2024-06-27 19:00:21,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 149 transitions, 1165 flow [2024-06-27 19:00:21,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:00:21,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:00:21,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-27 19:00:21,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 19:00:21,427 INFO L175 Difference]: Start difference. First operand has 90 places, 101 transitions, 751 flow. Second operand 6 states and 180 transitions. [2024-06-27 19:00:21,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 149 transitions, 1165 flow [2024-06-27 19:00:21,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 149 transitions, 1129 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 19:00:21,493 INFO L231 Difference]: Finished difference. Result has 94 places, 105 transitions, 796 flow [2024-06-27 19:00:21,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=796, PETRI_PLACES=94, PETRI_TRANSITIONS=105} [2024-06-27 19:00:21,494 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 31 predicate places. [2024-06-27 19:00:21,494 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 105 transitions, 796 flow [2024-06-27 19:00:21,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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) [2024-06-27 19:00:21,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:21,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:21,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:00:21,495 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:21,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:21,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1886749651, now seen corresponding path program 1 times [2024-06-27 19:00:21,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:21,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666034785] [2024-06-27 19:00:21,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:21,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:24,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:24,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666034785] [2024-06-27 19:00:24,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666034785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:24,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:24,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:00:24,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86910899] [2024-06-27 19:00:24,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:24,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:00:24,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:24,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:00:24,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:00:24,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-27 19:00:24,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 105 transitions, 796 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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) [2024-06-27 19:00:24,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:24,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-27 19:00:24,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:29,104 INFO L124 PetriNetUnfolderBase]: 18906/25681 cut-off events. [2024-06-27 19:00:29,104 INFO L125 PetriNetUnfolderBase]: For 73140/73140 co-relation queries the response was YES. [2024-06-27 19:00:29,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87684 conditions, 25681 events. 18906/25681 cut-off events. For 73140/73140 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 147904 event pairs, 7128 based on Foata normal form. 30/25709 useless extension candidates. Maximal degree in co-relation 87649. Up to 24670 conditions per place. [2024-06-27 19:00:29,289 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 136 selfloop transitions, 35 changer transitions 0/179 dead transitions. [2024-06-27 19:00:29,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 179 transitions, 1348 flow [2024-06-27 19:00:29,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:00:29,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:00:29,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 226 transitions. [2024-06-27 19:00:29,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664160401002506 [2024-06-27 19:00:29,291 INFO L175 Difference]: Start difference. First operand has 94 places, 105 transitions, 796 flow. Second operand 7 states and 226 transitions. [2024-06-27 19:00:29,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 179 transitions, 1348 flow [2024-06-27 19:00:29,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 179 transitions, 1299 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 19:00:29,356 INFO L231 Difference]: Finished difference. Result has 97 places, 108 transitions, 860 flow [2024-06-27 19:00:29,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=860, PETRI_PLACES=97, PETRI_TRANSITIONS=108} [2024-06-27 19:00:29,357 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 34 predicate places. [2024-06-27 19:00:29,357 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 108 transitions, 860 flow [2024-06-27 19:00:29,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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) [2024-06-27 19:00:29,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:29,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:29,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:00:29,358 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:29,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:29,359 INFO L85 PathProgramCache]: Analyzing trace with hash 777758563, now seen corresponding path program 2 times [2024-06-27 19:00:29,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:29,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214382735] [2024-06-27 19:00:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:29,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:32,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:32,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214382735] [2024-06-27 19:00:32,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214382735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:32,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:32,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:00:32,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114877357] [2024-06-27 19:00:32,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:32,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:00:32,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:32,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:00:32,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:00:32,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-27 19:00:32,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 108 transitions, 860 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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) [2024-06-27 19:00:32,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:32,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-27 19:00:32,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:36,521 INFO L124 PetriNetUnfolderBase]: 18992/25810 cut-off events. [2024-06-27 19:00:36,521 INFO L125 PetriNetUnfolderBase]: For 88880/88880 co-relation queries the response was YES. [2024-06-27 19:00:36,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92470 conditions, 25810 events. 18992/25810 cut-off events. For 88880/88880 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 148176 event pairs, 7234 based on Foata normal form. 6/25812 useless extension candidates. Maximal degree in co-relation 92434. Up to 25100 conditions per place. [2024-06-27 19:00:36,760 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 132 selfloop transitions, 36 changer transitions 0/176 dead transitions. [2024-06-27 19:00:36,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 176 transitions, 1400 flow [2024-06-27 19:00:36,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:00:36,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:00:36,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-06-27 19:00:36,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5513784461152882 [2024-06-27 19:00:36,763 INFO L175 Difference]: Start difference. First operand has 97 places, 108 transitions, 860 flow. Second operand 7 states and 220 transitions. [2024-06-27 19:00:36,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 176 transitions, 1400 flow [2024-06-27 19:00:36,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 176 transitions, 1325 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 19:00:36,844 INFO L231 Difference]: Finished difference. Result has 99 places, 111 transitions, 905 flow [2024-06-27 19:00:36,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=905, PETRI_PLACES=99, PETRI_TRANSITIONS=111} [2024-06-27 19:00:36,845 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 36 predicate places. [2024-06-27 19:00:36,845 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 111 transitions, 905 flow [2024-06-27 19:00:36,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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) [2024-06-27 19:00:36,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:36,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:36,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:00:36,845 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:36,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:36,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1554953641, now seen corresponding path program 3 times [2024-06-27 19:00:36,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:36,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076251984] [2024-06-27 19:00:36,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:36,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:39,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:39,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076251984] [2024-06-27 19:00:39,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076251984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:39,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:39,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:00:39,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378003645] [2024-06-27 19:00:39,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:39,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:00:39,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:39,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:00:39,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:00:39,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-27 19:00:39,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 111 transitions, 905 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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) [2024-06-27 19:00:39,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:39,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-27 19:00:39,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:43,424 INFO L124 PetriNetUnfolderBase]: 18977/25789 cut-off events. [2024-06-27 19:00:43,425 INFO L125 PetriNetUnfolderBase]: For 105702/105702 co-relation queries the response was YES. [2024-06-27 19:00:43,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95653 conditions, 25789 events. 18977/25789 cut-off events. For 105702/105702 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 148135 event pairs, 6342 based on Foata normal form. 6/25791 useless extension candidates. Maximal degree in co-relation 95616. Up to 24565 conditions per place. [2024-06-27 19:00:43,601 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 132 selfloop transitions, 46 changer transitions 0/186 dead transitions. [2024-06-27 19:00:43,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 186 transitions, 1521 flow [2024-06-27 19:00:43,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:00:43,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:00:43,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-06-27 19:00:43,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2024-06-27 19:00:43,604 INFO L175 Difference]: Start difference. First operand has 99 places, 111 transitions, 905 flow. Second operand 7 states and 224 transitions. [2024-06-27 19:00:43,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 186 transitions, 1521 flow [2024-06-27 19:00:43,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 186 transitions, 1433 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 19:00:43,688 INFO L231 Difference]: Finished difference. Result has 102 places, 117 transitions, 1021 flow [2024-06-27 19:00:43,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1021, PETRI_PLACES=102, PETRI_TRANSITIONS=117} [2024-06-27 19:00:43,689 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 39 predicate places. [2024-06-27 19:00:43,689 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 117 transitions, 1021 flow [2024-06-27 19:00:43,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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) [2024-06-27 19:00:43,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:43,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:43,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:00:43,690 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:43,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:43,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1074852863, now seen corresponding path program 1 times [2024-06-27 19:00:43,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:43,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826473070] [2024-06-27 19:00:43,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:43,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:45,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:45,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:45,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826473070] [2024-06-27 19:00:45,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826473070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:45,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:45,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:00:45,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628184865] [2024-06-27 19:00:45,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:45,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:00:45,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:45,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:00:45,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:00:45,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-27 19:00:45,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 117 transitions, 1021 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 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) [2024-06-27 19:00:45,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:45,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-27 19:00:45,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:49,848 INFO L124 PetriNetUnfolderBase]: 20652/28211 cut-off events. [2024-06-27 19:00:49,848 INFO L125 PetriNetUnfolderBase]: For 146916/146916 co-relation queries the response was YES. [2024-06-27 19:00:50,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111908 conditions, 28211 events. 20652/28211 cut-off events. For 146916/146916 co-relation queries the response was YES. Maximal size of possible extension queue 958. Compared 163704 event pairs, 7341 based on Foata normal form. 18/28225 useless extension candidates. Maximal degree in co-relation 111869. Up to 25959 conditions per place. [2024-06-27 19:00:50,126 INFO L140 encePairwiseOnDemand]: 42/57 looper letters, 179 selfloop transitions, 57 changer transitions 0/244 dead transitions. [2024-06-27 19:00:50,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 244 transitions, 2183 flow [2024-06-27 19:00:50,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:00:50,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:00:50,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2024-06-27 19:00:50,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2024-06-27 19:00:50,129 INFO L175 Difference]: Start difference. First operand has 102 places, 117 transitions, 1021 flow. Second operand 8 states and 268 transitions. [2024-06-27 19:00:50,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 244 transitions, 2183 flow [2024-06-27 19:00:50,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 244 transitions, 2088 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 19:00:50,374 INFO L231 Difference]: Finished difference. Result has 109 places, 145 transitions, 1417 flow [2024-06-27 19:00:50,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1417, PETRI_PLACES=109, PETRI_TRANSITIONS=145} [2024-06-27 19:00:50,375 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 46 predicate places. [2024-06-27 19:00:50,375 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 145 transitions, 1417 flow [2024-06-27 19:00:50,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 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) [2024-06-27 19:00:50,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:50,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:50,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:00:50,376 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:50,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:50,376 INFO L85 PathProgramCache]: Analyzing trace with hash 17089603, now seen corresponding path program 2 times [2024-06-27 19:00:50,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:50,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955561960] [2024-06-27 19:00:50,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:50,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:53,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:53,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955561960] [2024-06-27 19:00:53,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955561960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:53,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:53,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:00:53,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339684808] [2024-06-27 19:00:53,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:53,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:00:53,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:53,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:00:53,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:00:53,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-27 19:00:53,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 145 transitions, 1417 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 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) [2024-06-27 19:00:53,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:53,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-27 19:00:53,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:59,052 INFO L124 PetriNetUnfolderBase]: 21042/28799 cut-off events. [2024-06-27 19:00:59,052 INFO L125 PetriNetUnfolderBase]: For 182580/182582 co-relation queries the response was YES. [2024-06-27 19:00:59,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120704 conditions, 28799 events. 21042/28799 cut-off events. For 182580/182582 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 169781 event pairs, 5379 based on Foata normal form. 18/28813 useless extension candidates. Maximal degree in co-relation 120661. Up to 25156 conditions per place. [2024-06-27 19:00:59,428 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 153 selfloop transitions, 64 changer transitions 0/225 dead transitions. [2024-06-27 19:00:59,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 225 transitions, 2217 flow [2024-06-27 19:00:59,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:00:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:00:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-06-27 19:00:59,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5764411027568922 [2024-06-27 19:00:59,431 INFO L175 Difference]: Start difference. First operand has 109 places, 145 transitions, 1417 flow. Second operand 7 states and 230 transitions. [2024-06-27 19:00:59,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 225 transitions, 2217 flow [2024-06-27 19:00:59,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 225 transitions, 2180 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 19:00:59,683 INFO L231 Difference]: Finished difference. Result has 114 places, 149 transitions, 1596 flow [2024-06-27 19:00:59,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1596, PETRI_PLACES=114, PETRI_TRANSITIONS=149} [2024-06-27 19:00:59,684 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 51 predicate places. [2024-06-27 19:00:59,684 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 149 transitions, 1596 flow [2024-06-27 19:00:59,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 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) [2024-06-27 19:00:59,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:59,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:59,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:00:59,685 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:59,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:59,685 INFO L85 PathProgramCache]: Analyzing trace with hash 21860813, now seen corresponding path program 1 times [2024-06-27 19:00:59,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:59,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055816291] [2024-06-27 19:00:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:59,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:02,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:02,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055816291] [2024-06-27 19:01:02,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055816291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:02,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:02,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:02,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932359425] [2024-06-27 19:01:02,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:02,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:02,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:02,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:02,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:02,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-27 19:01:02,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 149 transitions, 1596 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 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) [2024-06-27 19:01:02,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:02,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-27 19:01:02,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:07,405 INFO L124 PetriNetUnfolderBase]: 20964/28717 cut-off events. [2024-06-27 19:01:07,405 INFO L125 PetriNetUnfolderBase]: For 207856/207858 co-relation queries the response was YES. [2024-06-27 19:01:07,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123854 conditions, 28717 events. 20964/28717 cut-off events. For 207856/207858 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 169387 event pairs, 5337 based on Foata normal form. 36/28749 useless extension candidates. Maximal degree in co-relation 123809. Up to 25120 conditions per place. [2024-06-27 19:01:07,825 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 150 selfloop transitions, 64 changer transitions 0/222 dead transitions. [2024-06-27 19:01:07,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 222 transitions, 2240 flow [2024-06-27 19:01:07,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:01:07,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:01:07,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-06-27 19:01:07,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.568922305764411 [2024-06-27 19:01:07,827 INFO L175 Difference]: Start difference. First operand has 114 places, 149 transitions, 1596 flow. Second operand 7 states and 227 transitions. [2024-06-27 19:01:07,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 222 transitions, 2240 flow [2024-06-27 19:01:08,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 222 transitions, 2160 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 19:01:08,109 INFO L231 Difference]: Finished difference. Result has 117 places, 149 transitions, 1656 flow [2024-06-27 19:01:08,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1656, PETRI_PLACES=117, PETRI_TRANSITIONS=149} [2024-06-27 19:01:08,110 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 54 predicate places. [2024-06-27 19:01:08,110 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 149 transitions, 1656 flow [2024-06-27 19:01:08,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 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) [2024-06-27 19:01:08,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:08,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:08,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:01:08,111 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:08,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:08,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1157079531, now seen corresponding path program 2 times [2024-06-27 19:01:08,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:08,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834235495] [2024-06-27 19:01:08,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:08,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:11,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:11,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834235495] [2024-06-27 19:01:11,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834235495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:11,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:11,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:11,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557297845] [2024-06-27 19:01:11,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:11,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:11,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:11,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:11,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:11,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-27 19:01:11,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 149 transitions, 1656 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 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) [2024-06-27 19:01:11,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:11,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-27 19:01:11,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:16,079 INFO L124 PetriNetUnfolderBase]: 20925/28628 cut-off events. [2024-06-27 19:01:16,080 INFO L125 PetriNetUnfolderBase]: For 195029/195039 co-relation queries the response was YES. [2024-06-27 19:01:16,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123143 conditions, 28628 events. 20925/28628 cut-off events. For 195029/195039 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 168442 event pairs, 4052 based on Foata normal form. 20/28637 useless extension candidates. Maximal degree in co-relation 123097. Up to 24689 conditions per place. [2024-06-27 19:01:16,273 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 141 selfloop transitions, 69 changer transitions 0/218 dead transitions. [2024-06-27 19:01:16,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 218 transitions, 2290 flow [2024-06-27 19:01:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:01:16,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:01:16,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 219 transitions. [2024-06-27 19:01:16,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488721804511278 [2024-06-27 19:01:16,275 INFO L175 Difference]: Start difference. First operand has 117 places, 149 transitions, 1656 flow. Second operand 7 states and 219 transitions. [2024-06-27 19:01:16,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 218 transitions, 2290 flow [2024-06-27 19:01:16,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 218 transitions, 2108 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 19:01:16,496 INFO L231 Difference]: Finished difference. Result has 117 places, 150 transitions, 1631 flow [2024-06-27 19:01:16,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1631, PETRI_PLACES=117, PETRI_TRANSITIONS=150} [2024-06-27 19:01:16,497 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 54 predicate places. [2024-06-27 19:01:16,497 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 150 transitions, 1631 flow [2024-06-27 19:01:16,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 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) [2024-06-27 19:01:16,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:16,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:16,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:01:16,498 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:16,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:16,498 INFO L85 PathProgramCache]: Analyzing trace with hash 153276833, now seen corresponding path program 1 times [2024-06-27 19:01:16,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:16,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891684665] [2024-06-27 19:01:16,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:16,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:18,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:18,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891684665] [2024-06-27 19:01:18,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891684665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:18,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:18,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:01:18,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298084773] [2024-06-27 19:01:18,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:18,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:01:18,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:18,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:01:18,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:01:18,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-27 19:01:18,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 150 transitions, 1631 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:18,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:18,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-27 19:01:18,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand