./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe027_rmo.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe027_rmo.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/safe027_rmo.i ./goblint.2024-06-19_11-23-25.files/protection/safe027_rmo.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 19:07:04,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:07:04,978 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:07:04,987 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:07:04,987 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:07:05,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:07:05,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:07:05,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:07:05,006 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:07:05,007 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:07:05,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:07:05,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:07:05,008 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:07:05,010 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:07:05,010 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:07:05,010 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:07:05,011 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:07:05,013 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:07:05,014 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:07:05,014 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:07:05,014 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:07:05,015 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:07:05,015 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:07:05,015 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:07:05,015 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:07:05,015 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:07:05,015 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:07:05,016 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:07:05,016 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:07:05,016 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:07:05,017 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:07:05,017 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:07:05,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:07:05,018 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:07:05,018 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:07:05,018 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:07:05,018 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:07:05,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:07:05,018 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:07:05,019 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:07:05,019 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:07:05,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:07:05,019 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:07:05,019 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 19:07:05,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:07:05,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:07:05,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:07:05,228 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:07:05,244 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:07:05,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe027_rmo.yml/witness.yml [2024-06-27 19:07:05,517 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:07:05,517 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:07:05,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_rmo.i [2024-06-27 19:07:06,627 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:07:06,850 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:07:06,851 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_rmo.i [2024-06-27 19:07:06,868 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14abb9a8e/f5a70b7a2d0345c1942b528bf1bb6a2f/FLAG2d737cafc [2024-06-27 19:07:06,882 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14abb9a8e/f5a70b7a2d0345c1942b528bf1bb6a2f [2024-06-27 19:07:06,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:07:06,883 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:07:06,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:07:06,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:07:06,890 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:07:06,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:07:05" (1/2) ... [2024-06-27 19:07:06,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a039ce and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:07:06, skipping insertion in model container [2024-06-27 19:07:06,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:07:05" (1/2) ... [2024-06-27 19:07:06,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6aa80465 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:07:06, skipping insertion in model container [2024-06-27 19:07:06,895 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:07:06" (2/2) ... [2024-06-27 19:07:06,895 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a039ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:07:06, skipping insertion in model container [2024-06-27 19:07:06,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:07:06" (2/2) ... [2024-06-27 19:07:06,896 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:07:07,041 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:07:07,042 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] (((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 19:07:07,042 INFO L97 edCorrectnessWitness]: Location invariant before [L870-L870] (((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 19:07:07,043 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] (((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 19:07:07,043 INFO L97 edCorrectnessWitness]: Location invariant before [L868-L868] (((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 19:07:07,043 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:07:07,043 INFO L106 edCorrectnessWitness]: ghost_update [L864-L864] multithreaded = 1; [2024-06-27 19:07:07,082 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:07:07,214 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/safe027_rmo.i[988,1001] [2024-06-27 19:07:07,427 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:07:07,434 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 19:07:07,464 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/safe027_rmo.i[988,1001] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:07:07,573 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:07:07,611 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:07:07,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:07:07 WrapperNode [2024-06-27 19:07:07,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:07:07,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:07:07,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:07:07,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:07:07,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:07:07" (1/1) ... [2024-06-27 19:07:07,646 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:07:07" (1/1) ... [2024-06-27 19:07:07,714 INFO L138 Inliner]: procedures = 176, calls = 82, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 196 [2024-06-27 19:07:07,715 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:07:07,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:07:07,716 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:07:07,716 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:07:07,725 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:07:07" (1/1) ... [2024-06-27 19:07:07,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:07:07" (1/1) ... [2024-06-27 19:07:07,736 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:07:07" (1/1) ... [2024-06-27 19:07:07,770 INFO L175 MemorySlicer]: Split 37 memory accesses to 2 slices as follows [2, 35]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 7 writes are split as follows [0, 7]. [2024-06-27 19:07:07,770 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:07:07" (1/1) ... [2024-06-27 19:07:07,770 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:07:07" (1/1) ... [2024-06-27 19:07:07,780 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:07:07" (1/1) ... [2024-06-27 19:07:07,782 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:07:07" (1/1) ... [2024-06-27 19:07:07,784 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:07:07" (1/1) ... [2024-06-27 19:07:07,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:07:07" (1/1) ... [2024-06-27 19:07:07,789 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:07:07,789 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:07:07,789 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:07:07,789 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:07:07,790 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:07:07" (1/1) ... [2024-06-27 19:07:07,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:07:07,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:07:07,853 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 19:07:07,859 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 19:07:07,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 19:07:07,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 19:07:07,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 19:07:07,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 19:07:07,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:07:07,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:07:07,881 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:07:07,881 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:07:07,881 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:07:07,881 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:07:07,882 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 19:07:07,882 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 19:07:07,882 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 19:07:07,884 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 19:07:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:07:07,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 19:07:07,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:07:07,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:07:07,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:07:07,886 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 19:07:08,051 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:07:08,052 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:07:08,465 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:07:08,465 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:07:08,803 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:07:08,803 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:07:08,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:07:08 BoogieIcfgContainer [2024-06-27 19:07:08,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:07:08,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:07:08,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:07:08,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:07:08,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:07:05" (1/4) ... [2024-06-27 19:07:08,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8dc7e9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:07:08, skipping insertion in model container [2024-06-27 19:07:08,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:07:06" (2/4) ... [2024-06-27 19:07:08,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8dc7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:07:08, skipping insertion in model container [2024-06-27 19:07:08,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:07:07" (3/4) ... [2024-06-27 19:07:08,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8dc7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:07:08, skipping insertion in model container [2024-06-27 19:07:08,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:07:08" (4/4) ... [2024-06-27 19:07:08,812 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_rmo.i [2024-06-27 19:07:08,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:07:08,827 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 19:07:08,827 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:07:08,895 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:07:08,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 57 transitions, 130 flow [2024-06-27 19:07:08,970 INFO L124 PetriNetUnfolderBase]: 1/53 cut-off events. [2024-06-27 19:07:08,970 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:07:08,974 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 69 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 19:07:08,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 57 transitions, 130 flow [2024-06-27 19:07:08,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 112 flow [2024-06-27 19:07:08,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:07:08,999 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;@5bdd9cbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:07:09,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 19:07:09,005 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:07:09,005 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:07:09,006 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:07:09,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:09,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:07:09,007 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 19:07:09,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:09,011 INFO L85 PathProgramCache]: Analyzing trace with hash 680977816, now seen corresponding path program 1 times [2024-06-27 19:07:09,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:09,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967130523] [2024-06-27 19:07:09,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:09,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:11,082 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 19:07:11,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:11,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967130523] [2024-06-27 19:07:11,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967130523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:11,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:11,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:07:11,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082797800] [2024-06-27 19:07:11,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:11,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:07:11,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:11,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:07:11,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:07:11,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-06-27 19:07:11,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 19:07:11,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:11,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-06-27 19:07:11,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:13,083 INFO L124 PetriNetUnfolderBase]: 9303/13494 cut-off events. [2024-06-27 19:07:13,083 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-06-27 19:07:13,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26268 conditions, 13494 events. 9303/13494 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 83297 event pairs, 6375 based on Foata normal form. 0/13071 useless extension candidates. Maximal degree in co-relation 26255. Up to 12561 conditions per place. [2024-06-27 19:07:13,160 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 55 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-06-27 19:07:13,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 73 transitions, 289 flow [2024-06-27 19:07:13,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:07:13,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:07:13,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-06-27 19:07:13,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6783625730994152 [2024-06-27 19:07:13,171 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 112 flow. Second operand 3 states and 116 transitions. [2024-06-27 19:07:13,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 73 transitions, 289 flow [2024-06-27 19:07:13,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 73 transitions, 282 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 19:07:13,176 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 154 flow [2024-06-27 19:07:13,177 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 19:07:13,179 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2024-06-27 19:07:13,180 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 154 flow [2024-06-27 19:07:13,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 19:07:13,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:13,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:13,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:07:13,181 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 19:07:13,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:13,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1584723959, now seen corresponding path program 1 times [2024-06-27 19:07:13,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:13,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361772620] [2024-06-27 19:07:13,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:13,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:15,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:07:15,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:15,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361772620] [2024-06-27 19:07:15,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361772620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:15,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:15,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:07:15,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100573416] [2024-06-27 19:07:15,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:15,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:07:15,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:15,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:07:15,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:07:15,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-06-27 19:07:15,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:15,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:15,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-06-27 19:07:15,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:17,552 INFO L124 PetriNetUnfolderBase]: 9286/12913 cut-off events. [2024-06-27 19:07:17,552 INFO L125 PetriNetUnfolderBase]: For 2410/2410 co-relation queries the response was YES. [2024-06-27 19:07:17,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29448 conditions, 12913 events. 9286/12913 cut-off events. For 2410/2410 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 75842 event pairs, 4112 based on Foata normal form. 6/12913 useless extension candidates. Maximal degree in co-relation 29436. Up to 12458 conditions per place. [2024-06-27 19:07:17,620 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 77 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2024-06-27 19:07:17,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 102 transitions, 456 flow [2024-06-27 19:07:17,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:07:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:07:17,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-06-27 19:07:17,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2024-06-27 19:07:17,623 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 154 flow. Second operand 4 states and 158 transitions. [2024-06-27 19:07:17,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 102 transitions, 456 flow [2024-06-27 19:07:17,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 102 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:07:17,625 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 237 flow [2024-06-27 19:07:17,626 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 19:07:17,626 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2024-06-27 19:07:17,626 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 237 flow [2024-06-27 19:07:17,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:17,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:17,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:17,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:07:17,627 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 19:07:17,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:17,628 INFO L85 PathProgramCache]: Analyzing trace with hash 233233832, now seen corresponding path program 1 times [2024-06-27 19:07:17,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:17,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372088215] [2024-06-27 19:07:17,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:17,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:20,466 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 19:07:20,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:20,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372088215] [2024-06-27 19:07:20,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372088215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:20,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:20,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:07:20,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385787169] [2024-06-27 19:07:20,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:20,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:07:20,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:20,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:07:20,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:07:20,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-06-27 19:07:20,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:20,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:20,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-06-27 19:07:20,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:23,027 INFO L124 PetriNetUnfolderBase]: 11975/16495 cut-off events. [2024-06-27 19:07:23,027 INFO L125 PetriNetUnfolderBase]: For 9941/9941 co-relation queries the response was YES. [2024-06-27 19:07:23,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42579 conditions, 16495 events. 11975/16495 cut-off events. For 9941/9941 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 95762 event pairs, 3693 based on Foata normal form. 24/16515 useless extension candidates. Maximal degree in co-relation 42564. Up to 15618 conditions per place. [2024-06-27 19:07:23,119 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 117 selfloop transitions, 19 changer transitions 0/147 dead transitions. [2024-06-27 19:07:23,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 147 transitions, 730 flow [2024-06-27 19:07:23,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:07:23,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:07:23,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 232 transitions. [2024-06-27 19:07:23,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6783625730994152 [2024-06-27 19:07:23,121 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 237 flow. Second operand 6 states and 232 transitions. [2024-06-27 19:07:23,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 147 transitions, 730 flow [2024-06-27 19:07:23,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 147 transitions, 730 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 19:07:23,130 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 326 flow [2024-06-27 19:07:23,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=326, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2024-06-27 19:07:23,131 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2024-06-27 19:07:23,131 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 326 flow [2024-06-27 19:07:23,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:23,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:23,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:23,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:07:23,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:23,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:23,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1017580397, now seen corresponding path program 1 times [2024-06-27 19:07:23,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:23,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151270201] [2024-06-27 19:07:23,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:23,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:24,704 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 19:07:24,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:24,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151270201] [2024-06-27 19:07:24,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151270201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:24,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:24,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:07:24,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302837729] [2024-06-27 19:07:24,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:24,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:07:24,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:24,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:07:24,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:07:24,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:07:24,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 326 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:24,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:24,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:07:24,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:27,505 INFO L124 PetriNetUnfolderBase]: 15103/21580 cut-off events. [2024-06-27 19:07:27,506 INFO L125 PetriNetUnfolderBase]: For 20689/20689 co-relation queries the response was YES. [2024-06-27 19:07:27,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57973 conditions, 21580 events. 15103/21580 cut-off events. For 20689/20689 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 132503 event pairs, 7616 based on Foata normal form. 3/21581 useless extension candidates. Maximal degree in co-relation 57953. Up to 20213 conditions per place. [2024-06-27 19:07:27,636 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 87 selfloop transitions, 12 changer transitions 0/108 dead transitions. [2024-06-27 19:07:27,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 108 transitions, 651 flow [2024-06-27 19:07:27,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:07:27,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:07:27,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-06-27 19:07:27,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5368421052631579 [2024-06-27 19:07:27,638 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 326 flow. Second operand 5 states and 153 transitions. [2024-06-27 19:07:27,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 108 transitions, 651 flow [2024-06-27 19:07:27,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 108 transitions, 613 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 19:07:27,652 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 405 flow [2024-06-27 19:07:27,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=405, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2024-06-27 19:07:27,654 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2024-06-27 19:07:27,654 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 405 flow [2024-06-27 19:07:27,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:27,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:27,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:27,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:07:27,655 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 19:07:27,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:27,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1579455600, now seen corresponding path program 1 times [2024-06-27 19:07:27,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:27,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920334089] [2024-06-27 19:07:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:27,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:30,219 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 19:07:30,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:30,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920334089] [2024-06-27 19:07:30,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920334089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:30,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:30,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:07:30,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300487805] [2024-06-27 19:07:30,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:30,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:07:30,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:30,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:07:30,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:07:30,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:07:30,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 405 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 19:07:30,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:30,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:07:30,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:33,383 INFO L124 PetriNetUnfolderBase]: 15154/20879 cut-off events. [2024-06-27 19:07:33,383 INFO L125 PetriNetUnfolderBase]: For 29097/29097 co-relation queries the response was YES. [2024-06-27 19:07:33,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62182 conditions, 20879 events. 15154/20879 cut-off events. For 29097/29097 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 120590 event pairs, 6441 based on Foata normal form. 3/20878 useless extension candidates. Maximal degree in co-relation 62159. Up to 20170 conditions per place. [2024-06-27 19:07:33,520 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 116 selfloop transitions, 26 changer transitions 0/151 dead transitions. [2024-06-27 19:07:33,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 151 transitions, 961 flow [2024-06-27 19:07:33,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:07:33,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:07:33,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-06-27 19:07:33,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760233918128655 [2024-06-27 19:07:33,523 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 405 flow. Second operand 6 states and 197 transitions. [2024-06-27 19:07:33,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 151 transitions, 961 flow [2024-06-27 19:07:33,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 151 transitions, 947 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 19:07:33,543 INFO L231 Difference]: Finished difference. Result has 82 places, 95 transitions, 606 flow [2024-06-27 19:07:33,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=606, PETRI_PLACES=82, PETRI_TRANSITIONS=95} [2024-06-27 19:07:33,545 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 19 predicate places. [2024-06-27 19:07:33,545 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 95 transitions, 606 flow [2024-06-27 19:07:33,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 19:07:33,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:33,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:33,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:07:33,546 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 19:07:33,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:33,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1313041936, now seen corresponding path program 2 times [2024-06-27 19:07:33,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:33,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695902286] [2024-06-27 19:07:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:33,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:35,914 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 19:07:35,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:35,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695902286] [2024-06-27 19:07:35,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695902286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:35,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:35,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:07:35,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841591811] [2024-06-27 19:07:35,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:35,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:07:35,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:35,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:07:35,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:07:35,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:07:35,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 95 transitions, 606 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 19:07:35,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:35,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:07:35,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:39,146 INFO L124 PetriNetUnfolderBase]: 15145/20883 cut-off events. [2024-06-27 19:07:39,146 INFO L125 PetriNetUnfolderBase]: For 42819/42830 co-relation queries the response was YES. [2024-06-27 19:07:39,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68093 conditions, 20883 events. 15145/20883 cut-off events. For 42819/42830 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 120876 event pairs, 6483 based on Foata normal form. 13/20893 useless extension candidates. Maximal degree in co-relation 68065. Up to 20161 conditions per place. [2024-06-27 19:07:39,313 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 110 selfloop transitions, 28 changer transitions 0/147 dead transitions. [2024-06-27 19:07:39,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 147 transitions, 1027 flow [2024-06-27 19:07:39,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:07:39,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:07:39,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-06-27 19:07:39,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-27 19:07:39,315 INFO L175 Difference]: Start difference. First operand has 82 places, 95 transitions, 606 flow. Second operand 6 states and 190 transitions. [2024-06-27 19:07:39,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 147 transitions, 1027 flow [2024-06-27 19:07:39,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 147 transitions, 1007 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 19:07:39,370 INFO L231 Difference]: Finished difference. Result has 88 places, 98 transitions, 688 flow [2024-06-27 19:07:39,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=688, PETRI_PLACES=88, PETRI_TRANSITIONS=98} [2024-06-27 19:07:39,370 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 25 predicate places. [2024-06-27 19:07:39,370 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 98 transitions, 688 flow [2024-06-27 19:07:39,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 19:07:39,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:39,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:39,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:07:39,371 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 19:07:39,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:39,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1357720500, now seen corresponding path program 1 times [2024-06-27 19:07:39,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:39,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827446468] [2024-06-27 19:07:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:39,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:41,305 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 19:07:41,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:41,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827446468] [2024-06-27 19:07:41,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827446468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:41,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:41,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:07:41,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848429795] [2024-06-27 19:07:41,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:41,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:07:41,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:41,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:07:41,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:07:41,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:07:41,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 98 transitions, 688 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 19:07:41,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:41,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:07:41,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:44,336 INFO L124 PetriNetUnfolderBase]: 15130/21629 cut-off events. [2024-06-27 19:07:44,337 INFO L125 PetriNetUnfolderBase]: For 44459/44459 co-relation queries the response was YES. [2024-06-27 19:07:44,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68707 conditions, 21629 events. 15130/21629 cut-off events. For 44459/44459 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 133291 event pairs, 6907 based on Foata normal form. 6/21633 useless extension candidates. Maximal degree in co-relation 68675. Up to 20193 conditions per place. [2024-06-27 19:07:44,769 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 121 selfloop transitions, 16 changer transitions 0/146 dead transitions. [2024-06-27 19:07:44,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 146 transitions, 1096 flow [2024-06-27 19:07:44,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:07:44,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:07:44,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-27 19:07:44,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5409356725146199 [2024-06-27 19:07:44,771 INFO L175 Difference]: Start difference. First operand has 88 places, 98 transitions, 688 flow. Second operand 6 states and 185 transitions. [2024-06-27 19:07:44,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 146 transitions, 1096 flow [2024-06-27 19:07:44,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 146 transitions, 1064 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 19:07:44,795 INFO L231 Difference]: Finished difference. Result has 92 places, 102 transitions, 739 flow [2024-06-27 19:07:44,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=739, PETRI_PLACES=92, PETRI_TRANSITIONS=102} [2024-06-27 19:07:44,796 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 29 predicate places. [2024-06-27 19:07:44,796 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 102 transitions, 739 flow [2024-06-27 19:07:44,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 19:07:44,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:44,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:44,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:07:44,797 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 19:07:44,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:44,797 INFO L85 PathProgramCache]: Analyzing trace with hash -643675856, now seen corresponding path program 1 times [2024-06-27 19:07:44,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:44,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679542983] [2024-06-27 19:07:44,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:44,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:47,866 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 19:07:47,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:47,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679542983] [2024-06-27 19:07:47,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679542983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:47,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:47,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:07:47,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380459415] [2024-06-27 19:07:47,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:47,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:07:47,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:47,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:07:47,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:07:47,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:07:47,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 102 transitions, 739 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:07:47,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:47,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:07:47,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:51,360 INFO L124 PetriNetUnfolderBase]: 15267/21114 cut-off events. [2024-06-27 19:07:51,361 INFO L125 PetriNetUnfolderBase]: For 57441/57441 co-relation queries the response was YES. [2024-06-27 19:07:51,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72331 conditions, 21114 events. 15267/21114 cut-off events. For 57441/57441 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 124038 event pairs, 5523 based on Foata normal form. 7/21118 useless extension candidates. Maximal degree in co-relation 72297. Up to 20096 conditions per place. [2024-06-27 19:07:51,472 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 142 selfloop transitions, 32 changer transitions 0/183 dead transitions. [2024-06-27 19:07:51,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 183 transitions, 1319 flow [2024-06-27 19:07:51,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:07:51,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:07:51,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-06-27 19:07:51,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5939849624060151 [2024-06-27 19:07:51,475 INFO L175 Difference]: Start difference. First operand has 92 places, 102 transitions, 739 flow. Second operand 7 states and 237 transitions. [2024-06-27 19:07:51,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 183 transitions, 1319 flow [2024-06-27 19:07:51,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 183 transitions, 1268 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 19:07:51,509 INFO L231 Difference]: Finished difference. Result has 95 places, 107 transitions, 810 flow [2024-06-27 19:07:51,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=810, PETRI_PLACES=95, PETRI_TRANSITIONS=107} [2024-06-27 19:07:51,511 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 32 predicate places. [2024-06-27 19:07:51,511 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 107 transitions, 810 flow [2024-06-27 19:07:51,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:07:51,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:51,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:51,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:07:51,512 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 19:07:51,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:51,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1718485078, now seen corresponding path program 2 times [2024-06-27 19:07:51,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:51,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171319273] [2024-06-27 19:07:51,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:51,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:54,626 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 19:07:54,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:54,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171319273] [2024-06-27 19:07:54,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171319273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:54,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:54,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:07:54,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676320823] [2024-06-27 19:07:54,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:54,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:07:54,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:54,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:07:54,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:07:54,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:07:54,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 107 transitions, 810 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:07:54,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:54,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:07:54,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:58,327 INFO L124 PetriNetUnfolderBase]: 15318/21140 cut-off events. [2024-06-27 19:07:58,327 INFO L125 PetriNetUnfolderBase]: For 72611/72611 co-relation queries the response was YES. [2024-06-27 19:07:58,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78290 conditions, 21140 events. 15318/21140 cut-off events. For 72611/72611 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 122520 event pairs, 6006 based on Foata normal form. 3/21139 useless extension candidates. Maximal degree in co-relation 78255. Up to 20249 conditions per place. [2024-06-27 19:07:58,497 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 141 selfloop transitions, 41 changer transitions 0/191 dead transitions. [2024-06-27 19:07:58,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 191 transitions, 1537 flow [2024-06-27 19:07:58,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:07:58,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:07:58,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 232 transitions. [2024-06-27 19:07:58,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.581453634085213 [2024-06-27 19:07:58,499 INFO L175 Difference]: Start difference. First operand has 95 places, 107 transitions, 810 flow. Second operand 7 states and 232 transitions. [2024-06-27 19:07:58,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 191 transitions, 1537 flow [2024-06-27 19:07:58,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 191 transitions, 1447 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 19:07:58,547 INFO L231 Difference]: Finished difference. Result has 99 places, 121 transitions, 997 flow [2024-06-27 19:07:58,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=997, PETRI_PLACES=99, PETRI_TRANSITIONS=121} [2024-06-27 19:07:58,548 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 36 predicate places. [2024-06-27 19:07:58,548 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 121 transitions, 997 flow [2024-06-27 19:07:58,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:07:58,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:58,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:58,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:07:58,549 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 19:07:58,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:58,549 INFO L85 PathProgramCache]: Analyzing trace with hash -2049592618, now seen corresponding path program 3 times [2024-06-27 19:07:58,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:58,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295142717] [2024-06-27 19:07:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:58,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:01,455 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 19:08:01,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:01,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295142717] [2024-06-27 19:08:01,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295142717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:01,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:01,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:08:01,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921704759] [2024-06-27 19:08:01,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:01,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:08:01,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:01,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:08:01,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:08:01,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:08:01,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 121 transitions, 997 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:08:01,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:01,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:08:01,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:05,376 INFO L124 PetriNetUnfolderBase]: 15309/21131 cut-off events. [2024-06-27 19:08:05,377 INFO L125 PetriNetUnfolderBase]: For 90283/90283 co-relation queries the response was YES. [2024-06-27 19:08:05,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82866 conditions, 21131 events. 15309/21131 cut-off events. For 90283/90283 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 122560 event pairs, 6025 based on Foata normal form. 3/21129 useless extension candidates. Maximal degree in co-relation 82828. Up to 20240 conditions per place. [2024-06-27 19:08:05,509 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 135 selfloop transitions, 42 changer transitions 0/186 dead transitions. [2024-06-27 19:08:05,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 186 transitions, 1532 flow [2024-06-27 19:08:05,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:08:05,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:08:05,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2024-06-27 19:08:05,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5639097744360902 [2024-06-27 19:08:05,511 INFO L175 Difference]: Start difference. First operand has 99 places, 121 transitions, 997 flow. Second operand 7 states and 225 transitions. [2024-06-27 19:08:05,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 186 transitions, 1532 flow [2024-06-27 19:08:05,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 186 transitions, 1483 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-27 19:08:05,564 INFO L231 Difference]: Finished difference. Result has 104 places, 122 transitions, 1054 flow [2024-06-27 19:08:05,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1054, PETRI_PLACES=104, PETRI_TRANSITIONS=122} [2024-06-27 19:08:05,564 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 41 predicate places. [2024-06-27 19:08:05,564 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 122 transitions, 1054 flow [2024-06-27 19:08:05,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:08:05,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:05,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:05,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:08:05,565 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 19:08:05,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:05,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1798969743, now seen corresponding path program 1 times [2024-06-27 19:08:05,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:05,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235533088] [2024-06-27 19:08:05,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:05,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:07,810 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 19:08:07,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:07,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235533088] [2024-06-27 19:08:07,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235533088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:07,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:07,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:08:07,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126583898] [2024-06-27 19:08:07,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:07,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:08:07,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:07,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:08:07,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:08:07,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:08:07,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 122 transitions, 1054 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:08:07,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:07,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:08:07,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:11,508 INFO L124 PetriNetUnfolderBase]: 15593/21535 cut-off events. [2024-06-27 19:08:11,508 INFO L125 PetriNetUnfolderBase]: For 98478/98478 co-relation queries the response was YES. [2024-06-27 19:08:11,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86076 conditions, 21535 events. 15593/21535 cut-off events. For 98478/98478 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 124704 event pairs, 6004 based on Foata normal form. 6/21537 useless extension candidates. Maximal degree in co-relation 86036. Up to 20614 conditions per place. [2024-06-27 19:08:11,716 INFO L140 encePairwiseOnDemand]: 42/57 looper letters, 167 selfloop transitions, 50 changer transitions 0/226 dead transitions. [2024-06-27 19:08:11,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 226 transitions, 1953 flow [2024-06-27 19:08:11,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:08:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:08:11,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 263 transitions. [2024-06-27 19:08:11,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5767543859649122 [2024-06-27 19:08:11,719 INFO L175 Difference]: Start difference. First operand has 104 places, 122 transitions, 1054 flow. Second operand 8 states and 263 transitions. [2024-06-27 19:08:11,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 226 transitions, 1953 flow [2024-06-27 19:08:11,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 226 transitions, 1856 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 19:08:11,810 INFO L231 Difference]: Finished difference. Result has 110 places, 145 transitions, 1371 flow [2024-06-27 19:08:11,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1371, PETRI_PLACES=110, PETRI_TRANSITIONS=145} [2024-06-27 19:08:11,811 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 47 predicate places. [2024-06-27 19:08:11,811 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 145 transitions, 1371 flow [2024-06-27 19:08:11,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:08:11,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:11,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:11,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:08:11,812 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 19:08:11,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:11,812 INFO L85 PathProgramCache]: Analyzing trace with hash 736629549, now seen corresponding path program 2 times [2024-06-27 19:08:11,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:11,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659618311] [2024-06-27 19:08:11,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:11,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:14,935 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 19:08:14,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:14,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659618311] [2024-06-27 19:08:14,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659618311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:14,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:14,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:08:14,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819849487] [2024-06-27 19:08:14,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:14,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:08:14,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:14,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:08:14,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:08:14,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:08:14,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 145 transitions, 1371 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:08:14,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:14,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:08:14,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:18,608 INFO L124 PetriNetUnfolderBase]: 15679/21669 cut-off events. [2024-06-27 19:08:18,609 INFO L125 PetriNetUnfolderBase]: For 117426/117426 co-relation queries the response was YES. [2024-06-27 19:08:18,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90808 conditions, 21669 events. 15679/21669 cut-off events. For 117426/117426 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 126251 event pairs, 5904 based on Foata normal form. 6/21671 useless extension candidates. Maximal degree in co-relation 90764. Up to 20656 conditions per place. [2024-06-27 19:08:18,814 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 159 selfloop transitions, 50 changer transitions 0/218 dead transitions. [2024-06-27 19:08:18,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 218 transitions, 2045 flow [2024-06-27 19:08:18,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:08:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:08:18,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-06-27 19:08:18,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.568922305764411 [2024-06-27 19:08:18,816 INFO L175 Difference]: Start difference. First operand has 110 places, 145 transitions, 1371 flow. Second operand 7 states and 227 transitions. [2024-06-27 19:08:18,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 218 transitions, 2045 flow [2024-06-27 19:08:18,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 218 transitions, 1969 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 19:08:18,925 INFO L231 Difference]: Finished difference. Result has 114 places, 148 transitions, 1456 flow [2024-06-27 19:08:18,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1295, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1456, PETRI_PLACES=114, PETRI_TRANSITIONS=148} [2024-06-27 19:08:18,926 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 51 predicate places. [2024-06-27 19:08:18,926 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 148 transitions, 1456 flow [2024-06-27 19:08:18,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:08:18,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:18,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:18,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:08:18,927 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 19:08:18,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:18,927 INFO L85 PathProgramCache]: Analyzing trace with hash 887145999, now seen corresponding path program 3 times [2024-06-27 19:08:18,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:18,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642677197] [2024-06-27 19:08:18,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:18,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:21,772 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 19:08:21,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:21,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642677197] [2024-06-27 19:08:21,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642677197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:21,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:21,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:08:21,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933098289] [2024-06-27 19:08:21,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:21,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:08:21,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:21,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:08:21,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:08:21,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:08:21,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 148 transitions, 1456 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:08:21,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:21,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:08:21,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:25,615 INFO L124 PetriNetUnfolderBase]: 15765/21805 cut-off events. [2024-06-27 19:08:25,615 INFO L125 PetriNetUnfolderBase]: For 137961/137972 co-relation queries the response was YES. [2024-06-27 19:08:25,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94735 conditions, 21805 events. 15765/21805 cut-off events. For 137961/137972 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 126935 event pairs, 5940 based on Foata normal form. 16/21817 useless extension candidates. Maximal degree in co-relation 94690. Up to 20836 conditions per place. [2024-06-27 19:08:25,779 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 165 selfloop transitions, 47 changer transitions 0/221 dead transitions. [2024-06-27 19:08:25,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 221 transitions, 2156 flow [2024-06-27 19:08:25,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:08:25,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:08:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-06-27 19:08:25,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5588972431077694 [2024-06-27 19:08:25,797 INFO L175 Difference]: Start difference. First operand has 114 places, 148 transitions, 1456 flow. Second operand 7 states and 223 transitions. [2024-06-27 19:08:25,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 221 transitions, 2156 flow [2024-06-27 19:08:25,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 221 transitions, 2027 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 19:08:25,942 INFO L231 Difference]: Finished difference. Result has 116 places, 151 transitions, 1484 flow [2024-06-27 19:08:25,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1484, PETRI_PLACES=116, PETRI_TRANSITIONS=151} [2024-06-27 19:08:25,944 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 53 predicate places. [2024-06-27 19:08:25,944 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 151 transitions, 1484 flow [2024-06-27 19:08:25,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:08:25,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:25,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:25,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:08:25,944 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 19:08:25,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:25,945 INFO L85 PathProgramCache]: Analyzing trace with hash 900711019, now seen corresponding path program 4 times [2024-06-27 19:08:25,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:25,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382124202] [2024-06-27 19:08:25,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:25,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:28,463 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 19:08:28,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:28,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382124202] [2024-06-27 19:08:28,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382124202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:28,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:28,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:08:28,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174712698] [2024-06-27 19:08:28,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:28,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:08:28,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:28,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:08:28,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:08:28,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:08:28,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 151 transitions, 1484 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:08:28,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:28,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:08:28,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:32,132 INFO L124 PetriNetUnfolderBase]: 15750/21798 cut-off events. [2024-06-27 19:08:32,132 INFO L125 PetriNetUnfolderBase]: For 136973/136984 co-relation queries the response was YES. [2024-06-27 19:08:32,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94322 conditions, 21798 events. 15750/21798 cut-off events. For 136973/136984 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 127092 event pairs, 5449 based on Foata normal form. 16/21810 useless extension candidates. Maximal degree in co-relation 94276. Up to 20537 conditions per place. [2024-06-27 19:08:32,350 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 157 selfloop transitions, 60 changer transitions 0/226 dead transitions. [2024-06-27 19:08:32,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 226 transitions, 2230 flow [2024-06-27 19:08:32,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:08:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:08:32,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-06-27 19:08:32,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2024-06-27 19:08:32,352 INFO L175 Difference]: Start difference. First operand has 116 places, 151 transitions, 1484 flow. Second operand 7 states and 224 transitions. [2024-06-27 19:08:32,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 226 transitions, 2230 flow [2024-06-27 19:08:32,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 226 transitions, 2115 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 19:08:32,505 INFO L231 Difference]: Finished difference. Result has 119 places, 157 transitions, 1624 flow [2024-06-27 19:08:32,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1624, PETRI_PLACES=119, PETRI_TRANSITIONS=157} [2024-06-27 19:08:32,506 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 56 predicate places. [2024-06-27 19:08:32,506 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 157 transitions, 1624 flow [2024-06-27 19:08:32,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:08:32,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:32,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:32,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:08:32,506 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 19:08:32,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:32,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1239937203, now seen corresponding path program 1 times [2024-06-27 19:08:32,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:32,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148952348] [2024-06-27 19:08:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:32,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:36,498 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 19:08:36,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:36,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148952348] [2024-06-27 19:08:36,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148952348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:36,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:36,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:08:36,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011018798] [2024-06-27 19:08:36,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:36,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:08:36,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:36,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:08:36,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:08:36,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:08:36,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 157 transitions, 1624 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:08:36,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:36,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:08:36,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:41,595 INFO L124 PetriNetUnfolderBase]: 18770/26197 cut-off events. [2024-06-27 19:08:41,595 INFO L125 PetriNetUnfolderBase]: For 219708/219708 co-relation queries the response was YES. [2024-06-27 19:08:41,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120879 conditions, 26197 events. 18770/26197 cut-off events. For 219708/219708 co-relation queries the response was YES. Maximal size of possible extension queue 938. Compared 160110 event pairs, 4746 based on Foata normal form. 78/26272 useless extension candidates. Maximal degree in co-relation 120831. Up to 21291 conditions per place. [2024-06-27 19:08:41,916 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 231 selfloop transitions, 47 changer transitions 0/287 dead transitions. [2024-06-27 19:08:41,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 287 transitions, 2754 flow [2024-06-27 19:08:41,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:08:41,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:08:41,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 317 transitions. [2024-06-27 19:08:41,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6179337231968811 [2024-06-27 19:08:41,918 INFO L175 Difference]: Start difference. First operand has 119 places, 157 transitions, 1624 flow. Second operand 9 states and 317 transitions. [2024-06-27 19:08:41,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 287 transitions, 2754 flow [2024-06-27 19:08:42,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 287 transitions, 2655 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 19:08:42,279 INFO L231 Difference]: Finished difference. Result has 126 places, 163 transitions, 1744 flow [2024-06-27 19:08:42,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1744, PETRI_PLACES=126, PETRI_TRANSITIONS=163} [2024-06-27 19:08:42,280 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 63 predicate places. [2024-06-27 19:08:42,280 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 163 transitions, 1744 flow [2024-06-27 19:08:42,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:08:42,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:42,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:42,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:08:42,490 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:42,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:42,490 INFO L85 PathProgramCache]: Analyzing trace with hash -207973001, now seen corresponding path program 2 times [2024-06-27 19:08:42,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:42,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331778198] [2024-06-27 19:08:42,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:42,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:46,296 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 19:08:46,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:46,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331778198] [2024-06-27 19:08:46,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331778198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:46,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:46,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:08:46,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941816019] [2024-06-27 19:08:46,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:46,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:08:46,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:46,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:08:46,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:08:46,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:08:46,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 163 transitions, 1744 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:08:46,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:46,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:08:46,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:51,934 INFO L124 PetriNetUnfolderBase]: 18544/25923 cut-off events. [2024-06-27 19:08:51,935 INFO L125 PetriNetUnfolderBase]: For 243990/243990 co-relation queries the response was YES. [2024-06-27 19:08:52,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122758 conditions, 25923 events. 18544/25923 cut-off events. For 243990/243990 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 159035 event pairs, 6096 based on Foata normal form. 92/26012 useless extension candidates. Maximal degree in co-relation 122707. Up to 23005 conditions per place. [2024-06-27 19:08:52,501 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 211 selfloop transitions, 43 changer transitions 0/263 dead transitions. [2024-06-27 19:08:52,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 263 transitions, 2585 flow [2024-06-27 19:08:52,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:08:52,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:08:52,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-06-27 19:08:52,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6030701754385965 [2024-06-27 19:08:52,504 INFO L175 Difference]: Start difference. First operand has 126 places, 163 transitions, 1744 flow. Second operand 8 states and 275 transitions. [2024-06-27 19:08:52,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 263 transitions, 2585 flow [2024-06-27 19:08:52,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 263 transitions, 2502 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 19:08:52,857 INFO L231 Difference]: Finished difference. Result has 129 places, 164 transitions, 1781 flow [2024-06-27 19:08:52,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1781, PETRI_PLACES=129, PETRI_TRANSITIONS=164} [2024-06-27 19:08:52,858 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 66 predicate places. [2024-06-27 19:08:52,858 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 164 transitions, 1781 flow [2024-06-27 19:08:52,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:08:52,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:52,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:52,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:08:52,859 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:52,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:52,859 INFO L85 PathProgramCache]: Analyzing trace with hash -92681831, now seen corresponding path program 3 times [2024-06-27 19:08:52,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:52,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243593500] [2024-06-27 19:08:52,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:52,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:56,843 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 19:08:56,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:56,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243593500] [2024-06-27 19:08:56,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243593500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:56,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:56,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:08:56,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281120265] [2024-06-27 19:08:56,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:56,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:08:56,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:56,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:08:56,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:08:56,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:08:56,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 164 transitions, 1781 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:08:56,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:56,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:08:56,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:01,615 INFO L124 PetriNetUnfolderBase]: 18856/26302 cut-off events. [2024-06-27 19:09:01,616 INFO L125 PetriNetUnfolderBase]: For 231121/231121 co-relation queries the response was YES. [2024-06-27 19:09:01,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124519 conditions, 26302 events. 18856/26302 cut-off events. For 231121/231121 co-relation queries the response was YES. Maximal size of possible extension queue 935. Compared 161025 event pairs, 6353 based on Foata normal form. 24/26322 useless extension candidates. Maximal degree in co-relation 124466. Up to 24707 conditions per place. [2024-06-27 19:09:01,933 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 188 selfloop transitions, 58 changer transitions 0/255 dead transitions. [2024-06-27 19:09:01,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 255 transitions, 2603 flow [2024-06-27 19:09:01,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:09:01,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:09:01,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 264 transitions. [2024-06-27 19:09:01,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-06-27 19:09:01,937 INFO L175 Difference]: Start difference. First operand has 129 places, 164 transitions, 1781 flow. Second operand 8 states and 264 transitions. [2024-06-27 19:09:01,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 255 transitions, 2603 flow [2024-06-27 19:09:02,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 255 transitions, 2522 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 19:09:02,212 INFO L231 Difference]: Finished difference. Result has 131 places, 166 transitions, 1874 flow [2024-06-27 19:09:02,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1700, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1874, PETRI_PLACES=131, PETRI_TRANSITIONS=166} [2024-06-27 19:09:02,213 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 68 predicate places. [2024-06-27 19:09:02,213 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 166 transitions, 1874 flow [2024-06-27 19:09:02,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:09:02,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:02,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:02,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:09:02,214 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:02,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:02,214 INFO L85 PathProgramCache]: Analyzing trace with hash -92497381, now seen corresponding path program 1 times [2024-06-27 19:09:02,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:02,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701293670] [2024-06-27 19:09:02,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:02,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:06,941 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 19:09:06,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:06,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701293670] [2024-06-27 19:09:06,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701293670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:06,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:06,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:09:06,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396122607] [2024-06-27 19:09:06,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:06,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:09:06,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:06,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:09:06,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:09:06,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:09:06,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 166 transitions, 1874 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:09:06,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:06,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:09:06,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:11,994 INFO L124 PetriNetUnfolderBase]: 19082/26624 cut-off events. [2024-06-27 19:09:11,995 INFO L125 PetriNetUnfolderBase]: For 259672/259672 co-relation queries the response was YES. [2024-06-27 19:09:12,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128402 conditions, 26624 events. 19082/26624 cut-off events. For 259672/259672 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 162964 event pairs, 6297 based on Foata normal form. 18/26638 useless extension candidates. Maximal degree in co-relation 128348. Up to 24313 conditions per place. [2024-06-27 19:09:12,235 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 187 selfloop transitions, 65 changer transitions 0/261 dead transitions. [2024-06-27 19:09:12,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 261 transitions, 2745 flow [2024-06-27 19:09:12,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:09:12,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:09:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2024-06-27 19:09:12,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 19:09:12,237 INFO L175 Difference]: Start difference. First operand has 131 places, 166 transitions, 1874 flow. Second operand 8 states and 266 transitions. [2024-06-27 19:09:12,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 261 transitions, 2745 flow [2024-06-27 19:09:12,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 261 transitions, 2613 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 19:09:12,520 INFO L231 Difference]: Finished difference. Result has 134 places, 169 transitions, 1974 flow [2024-06-27 19:09:12,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1974, PETRI_PLACES=134, PETRI_TRANSITIONS=169} [2024-06-27 19:09:12,521 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 71 predicate places. [2024-06-27 19:09:12,521 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 169 transitions, 1974 flow [2024-06-27 19:09:12,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:09:12,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:12,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:12,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:09:12,522 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:12,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:12,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1731539477, now seen corresponding path program 4 times [2024-06-27 19:09:12,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:12,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651201438] [2024-06-27 19:09:12,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:12,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:15,994 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 19:09:15,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:15,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651201438] [2024-06-27 19:09:15,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651201438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:15,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:15,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:09:15,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255254627] [2024-06-27 19:09:15,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:15,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:09:15,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:15,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:09:15,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:09:16,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:09:16,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 169 transitions, 1974 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:09:16,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:16,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:09:16,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:21,162 INFO L124 PetriNetUnfolderBase]: 19293/26970 cut-off events. [2024-06-27 19:09:21,162 INFO L125 PetriNetUnfolderBase]: For 289373/289373 co-relation queries the response was YES. [2024-06-27 19:09:21,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133001 conditions, 26970 events. 19293/26970 cut-off events. For 289373/289373 co-relation queries the response was YES. Maximal size of possible extension queue 950. Compared 165769 event pairs, 6459 based on Foata normal form. 24/26988 useless extension candidates. Maximal degree in co-relation 132945. Up to 25330 conditions per place. [2024-06-27 19:09:21,399 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 193 selfloop transitions, 57 changer transitions 0/259 dead transitions. [2024-06-27 19:09:21,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 259 transitions, 2822 flow [2024-06-27 19:09:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:09:21,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:09:21,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 260 transitions. [2024-06-27 19:09:21,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-06-27 19:09:21,401 INFO L175 Difference]: Start difference. First operand has 134 places, 169 transitions, 1974 flow. Second operand 8 states and 260 transitions. [2024-06-27 19:09:21,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 259 transitions, 2822 flow [2024-06-27 19:09:21,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 259 transitions, 2683 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 19:09:21,849 INFO L231 Difference]: Finished difference. Result has 137 places, 171 transitions, 2015 flow [2024-06-27 19:09:21,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2015, PETRI_PLACES=137, PETRI_TRANSITIONS=171} [2024-06-27 19:09:21,849 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 74 predicate places. [2024-06-27 19:09:21,850 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 171 transitions, 2015 flow [2024-06-27 19:09:21,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:09:21,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:21,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:21,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:09:21,850 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:21,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:21,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2143965337, now seen corresponding path program 2 times [2024-06-27 19:09:21,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:21,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096222210] [2024-06-27 19:09:21,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:21,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:25,454 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 19:09:25,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:25,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096222210] [2024-06-27 19:09:25,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096222210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:25,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:25,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:09:25,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928313580] [2024-06-27 19:09:25,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:25,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:09:25,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:25,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:09:25,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:09:25,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:09:25,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 171 transitions, 2015 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:09:25,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:25,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:09:25,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:30,755 INFO L124 PetriNetUnfolderBase]: 19519/27320 cut-off events. [2024-06-27 19:09:30,756 INFO L125 PetriNetUnfolderBase]: For 317778/317778 co-relation queries the response was YES. [2024-06-27 19:09:30,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136444 conditions, 27320 events. 19519/27320 cut-off events. For 317778/317778 co-relation queries the response was YES. Maximal size of possible extension queue 958. Compared 168242 event pairs, 6459 based on Foata normal form. 18/27332 useless extension candidates. Maximal degree in co-relation 136387. Up to 25342 conditions per place. [2024-06-27 19:09:31,274 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 196 selfloop transitions, 60 changer transitions 0/265 dead transitions. [2024-06-27 19:09:31,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 265 transitions, 2895 flow [2024-06-27 19:09:31,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:09:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:09:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 263 transitions. [2024-06-27 19:09:31,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5767543859649122 [2024-06-27 19:09:31,290 INFO L175 Difference]: Start difference. First operand has 137 places, 171 transitions, 2015 flow. Second operand 8 states and 263 transitions. [2024-06-27 19:09:31,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 265 transitions, 2895 flow [2024-06-27 19:09:31,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 265 transitions, 2757 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 19:09:31,785 INFO L231 Difference]: Finished difference. Result has 139 places, 173 transitions, 2066 flow [2024-06-27 19:09:31,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1877, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2066, PETRI_PLACES=139, PETRI_TRANSITIONS=173} [2024-06-27 19:09:31,786 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 76 predicate places. [2024-06-27 19:09:31,786 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 173 transitions, 2066 flow [2024-06-27 19:09:31,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 19:09:31,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:31,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:31,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:09:31,787 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:31,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:31,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2142727749, now seen corresponding path program 3 times [2024-06-27 19:09:31,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:31,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640284012] [2024-06-27 19:09:31,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:31,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat