./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/mutex-meet-nonrel/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/mutex-meet-nonrel/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 [2024-06-28 02:10:36,575 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:10:36,639 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:10:36,643 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:10:36,644 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:10:36,664 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:10:36,665 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:10:36,665 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:10:36,666 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:10:36,668 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:10:36,669 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:10:36,669 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:10:36,670 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:10:36,671 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:10:36,671 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:10:36,671 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:10:36,671 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:10:36,671 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:10:36,671 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:10:36,672 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:10:36,673 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:10:36,673 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:10:36,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:10:36,673 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:10:36,674 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:10:36,674 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:10:36,674 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:10:36,674 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:10:36,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:10:36,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:10:36,675 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:10:36,676 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:10:36,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:10:36,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:10:36,676 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:10:36,676 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:10:36,676 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:10:36,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:10:36,677 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:10:36,677 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:10:36,677 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:10:36,688 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:10:36,688 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:10:36,688 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 02:10:36,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:10:36,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:10:36,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:10:36,896 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:10:36,897 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:10:36,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_rmo.i [2024-06-28 02:10:37,939 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:10:38,197 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:10:38,201 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_rmo.i [2024-06-28 02:10:38,214 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f719431cb/840941e45ce344bca91523562838e41b/FLAG6a64da3b2 [2024-06-28 02:10:38,223 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f719431cb/840941e45ce344bca91523562838e41b [2024-06-28 02:10:38,226 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:10:38,226 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:10:38,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe027_rmo.yml/witness.yml [2024-06-28 02:10:38,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:10:38,520 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:10:38,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:10:38,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:10:38,524 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:10:38,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:10:38" (1/2) ... [2024-06-28 02:10:38,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77988b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:10:38, skipping insertion in model container [2024-06-28 02:10:38,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:10:38" (1/2) ... [2024-06-28 02:10:38,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@267203cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:10:38, skipping insertion in model container [2024-06-28 02:10:38,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:10:38" (2/2) ... [2024-06-28 02:10:38,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77988b4d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:10:38, skipping insertion in model container [2024-06-28 02:10:38,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:10:38" (2/2) ... [2024-06-28 02:10:38,528 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:10:38,670 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:10:38,674 INFO L97 edCorrectnessWitness]: Location invariant before [L868-L868] (((((((((((((((((((((((((((((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_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 || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0) [2024-06-28 02:10:38,675 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] (((((((((((((((((((((((((((((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0) [2024-06-28 02:10:38,675 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] (((((((((((((((((((((((((((((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_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 || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0) [2024-06-28 02:10:38,675 INFO L97 edCorrectnessWitness]: Location invariant before [L870-L870] (((((((((((((((((((((((((((((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0) [2024-06-28 02:10:38,675 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:10:38,676 INFO L106 edCorrectnessWitness]: ghost_update [L864-L864] multithreaded = 1; [2024-06-28 02:10:38,716 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:10:38,887 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] [2024-06-28 02:10:39,017 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:10:39,025 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 02:10:39,058 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 [2024-06-28 02:10:39,219 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:10:39,262 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:10:39,263 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:10:39 WrapperNode [2024-06-28 02:10:39,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:10:39,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:10:39,264 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:10:39,264 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:10:39,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:10:39" (1/1) ... [2024-06-28 02:10:39,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:10:39" (1/1) ... [2024-06-28 02:10:39,342 INFO L138 Inliner]: procedures = 176, calls = 98, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 244 [2024-06-28 02:10:39,344 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:10:39,345 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:10:39,345 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:10:39,345 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:10:39,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:10:39" (1/1) ... [2024-06-28 02:10:39,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:10:39" (1/1) ... [2024-06-28 02:10:39,366 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:10:39" (1/1) ... [2024-06-28 02:10:39,395 INFO L175 MemorySlicer]: Split 53 memory accesses to 2 slices as follows [2, 51]. 96 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]. [2024-06-28 02:10:39,396 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:10:39" (1/1) ... [2024-06-28 02:10:39,396 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:10:39" (1/1) ... [2024-06-28 02:10:39,416 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:10:39" (1/1) ... [2024-06-28 02:10:39,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:10:39" (1/1) ... [2024-06-28 02:10:39,432 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:10:39" (1/1) ... [2024-06-28 02:10:39,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:10:39" (1/1) ... [2024-06-28 02:10:39,438 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:10:39,446 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:10:39,446 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:10:39,446 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:10:39,447 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:10:39" (1/1) ... [2024-06-28 02:10:39,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:10:39,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:10:39,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:10:39,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:10:39,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 02:10:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 02:10:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 02:10:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 02:10:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:10:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:10:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:10:39,510 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:10:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:10:39,511 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:10:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:10:39,511 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:10:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 02:10:39,511 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 02:10:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:10:39,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 02:10:39,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:10:39,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:10:39,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:10:39,517 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:10:39,635 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:10:39,637 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:10:40,109 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:10:40,109 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:10:40,520 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:10:40,521 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:10:40,521 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:10:40 BoogieIcfgContainer [2024-06-28 02:10:40,521 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:10:40,523 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:10:40,524 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:10:40,526 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:10:40,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:10:38" (1/4) ... [2024-06-28 02:10:40,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c35780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:10:40, skipping insertion in model container [2024-06-28 02:10:40,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:10:38" (2/4) ... [2024-06-28 02:10:40,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c35780 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:10:40, skipping insertion in model container [2024-06-28 02:10:40,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:10:39" (3/4) ... [2024-06-28 02:10:40,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c35780 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:10:40, skipping insertion in model container [2024-06-28 02:10:40,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:10:40" (4/4) ... [2024-06-28 02:10:40,530 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_rmo.i [2024-06-28 02:10:40,545 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:10:40,545 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 02:10:40,546 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:10:40,601 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:10:40,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 57 transitions, 130 flow [2024-06-28 02:10:40,662 INFO L124 PetriNetUnfolderBase]: 1/53 cut-off events. [2024-06-28 02:10:40,662 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:10:40,666 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 68 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. [2024-06-28 02:10:40,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 57 transitions, 130 flow [2024-06-28 02:10:40,670 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 112 flow [2024-06-28 02:10:40,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:10:40,714 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;@72b010ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:10:40,714 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 02:10:40,720 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:10:40,720 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:10:40,720 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:10:40,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:40,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:10:40,721 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)] === [2024-06-28 02:10:40,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:40,740 INFO L85 PathProgramCache]: Analyzing trace with hash 774467991, now seen corresponding path program 1 times [2024-06-28 02:10:40,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:40,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143574121] [2024-06-28 02:10:40,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:40,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:43,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:43,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143574121] [2024-06-28 02:10:43,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143574121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:43,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:43,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:10:43,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3932167] [2024-06-28 02:10:43,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:43,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:10:43,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:43,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:10:43,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:10:43,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-06-28 02:10:43,142 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) [2024-06-28 02:10:43,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:43,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-06-28 02:10:43,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:45,252 INFO L124 PetriNetUnfolderBase]: 9303/13494 cut-off events. [2024-06-28 02:10:45,252 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-06-28 02:10:45,272 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 595. Compared 83290 event pairs, 6375 based on Foata normal form. 0/13072 useless extension candidates. Maximal degree in co-relation 26255. Up to 12561 conditions per place. [2024-06-28 02:10:45,322 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 55 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-06-28 02:10:45,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 73 transitions, 289 flow [2024-06-28 02:10:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:10:45,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:10:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-06-28 02:10:45,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6783625730994152 [2024-06-28 02:10:45,333 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 112 flow. Second operand 3 states and 116 transitions. [2024-06-28 02:10:45,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 73 transitions, 289 flow [2024-06-28 02:10:45,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 73 transitions, 282 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 02:10:45,337 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 154 flow [2024-06-28 02:10:45,339 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} [2024-06-28 02:10:45,341 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2024-06-28 02:10:45,341 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 154 flow [2024-06-28 02:10:45,341 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) [2024-06-28 02:10:45,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:45,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:45,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:10:45,342 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)] === [2024-06-28 02:10:45,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:45,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1235221570, now seen corresponding path program 1 times [2024-06-28 02:10:45,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:45,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864924074] [2024-06-28 02:10:45,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:45,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:47,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:47,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864924074] [2024-06-28 02:10:47,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864924074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:47,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:47,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:10:47,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230425905] [2024-06-28 02:10:47,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:47,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:10:47,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:47,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:10:47,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:10:47,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-06-28 02:10:47,739 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) [2024-06-28 02:10:47,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:47,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-06-28 02:10:47,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:49,897 INFO L124 PetriNetUnfolderBase]: 9286/12913 cut-off events. [2024-06-28 02:10:49,898 INFO L125 PetriNetUnfolderBase]: For 2410/2410 co-relation queries the response was YES. [2024-06-28 02:10:49,916 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 580. Compared 75453 event pairs, 4112 based on Foata normal form. 6/12914 useless extension candidates. Maximal degree in co-relation 29436. Up to 12458 conditions per place. [2024-06-28 02:10:49,965 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 77 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2024-06-28 02:10:49,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 102 transitions, 456 flow [2024-06-28 02:10:49,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:10:49,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:10:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-06-28 02:10:49,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2024-06-28 02:10:49,972 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 154 flow. Second operand 4 states and 158 transitions. [2024-06-28 02:10:49,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 102 transitions, 456 flow [2024-06-28 02:10:49,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 102 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:10:49,977 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 237 flow [2024-06-28 02:10:49,977 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} [2024-06-28 02:10:49,981 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2024-06-28 02:10:49,981 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 237 flow [2024-06-28 02:10:49,982 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) [2024-06-28 02:10:49,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:49,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:49,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:10:49,983 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)] === [2024-06-28 02:10:49,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:49,985 INFO L85 PathProgramCache]: Analyzing trace with hash -791616035, now seen corresponding path program 1 times [2024-06-28 02:10:49,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:49,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490229230] [2024-06-28 02:10:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:49,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:53,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:53,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:53,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490229230] [2024-06-28 02:10:53,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490229230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:53,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:53,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:10:53,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847998674] [2024-06-28 02:10:53,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:53,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:10:53,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:53,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:10:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:10:53,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-06-28 02:10:53,974 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) [2024-06-28 02:10:53,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:53,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-06-28 02:10:53,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:56,718 INFO L124 PetriNetUnfolderBase]: 11975/16495 cut-off events. [2024-06-28 02:10:56,719 INFO L125 PetriNetUnfolderBase]: For 9941/9941 co-relation queries the response was YES. [2024-06-28 02:10:56,760 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 95879 event pairs, 3693 based on Foata normal form. 24/16516 useless extension candidates. Maximal degree in co-relation 42564. Up to 15618 conditions per place. [2024-06-28 02:10:56,827 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 117 selfloop transitions, 19 changer transitions 0/147 dead transitions. [2024-06-28 02:10:56,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 147 transitions, 730 flow [2024-06-28 02:10:56,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:10:56,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:10:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 232 transitions. [2024-06-28 02:10:56,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6783625730994152 [2024-06-28 02:10:56,830 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 237 flow. Second operand 6 states and 232 transitions. [2024-06-28 02:10:56,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 147 transitions, 730 flow [2024-06-28 02:10:56,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 147 transitions, 730 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 02:10:56,841 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 326 flow [2024-06-28 02:10:56,841 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} [2024-06-28 02:10:56,842 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2024-06-28 02:10:56,842 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 326 flow [2024-06-28 02:10:56,842 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) [2024-06-28 02:10:56,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:56,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:56,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:10:56,843 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)] === [2024-06-28 02:10:56,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:56,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1766212943, now seen corresponding path program 1 times [2024-06-28 02:10:56,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:56,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173936108] [2024-06-28 02:10:56,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:56,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:58,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:58,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:58,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173936108] [2024-06-28 02:10:58,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173936108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:58,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:58,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:10:58,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736809368] [2024-06-28 02:10:58,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:58,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:10:58,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:58,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:10:58,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:10:58,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 02:10:58,564 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) [2024-06-28 02:10:58,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:58,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 02:10:58,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:01,330 INFO L124 PetriNetUnfolderBase]: 15103/21580 cut-off events. [2024-06-28 02:11:01,331 INFO L125 PetriNetUnfolderBase]: For 20647/20647 co-relation queries the response was YES. [2024-06-28 02:11:01,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57973 conditions, 21580 events. 15103/21580 cut-off events. For 20647/20647 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 132456 event pairs, 7598 based on Foata normal form. 3/21582 useless extension candidates. Maximal degree in co-relation 57953. Up to 20213 conditions per place. [2024-06-28 02:11:01,478 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 87 selfloop transitions, 12 changer transitions 0/108 dead transitions. [2024-06-28 02:11:01,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 108 transitions, 651 flow [2024-06-28 02:11:01,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:11:01,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:11:01,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-06-28 02:11:01,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5368421052631579 [2024-06-28 02:11:01,480 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 326 flow. Second operand 5 states and 153 transitions. [2024-06-28 02:11:01,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 108 transitions, 651 flow [2024-06-28 02:11:01,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 108 transitions, 613 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:11:01,492 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 405 flow [2024-06-28 02:11:01,492 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} [2024-06-28 02:11:01,494 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2024-06-28 02:11:01,494 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 405 flow [2024-06-28 02:11:01,494 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) [2024-06-28 02:11:01,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:01,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:01,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:11:01,495 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)] === [2024-06-28 02:11:01,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:01,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1772642576, now seen corresponding path program 1 times [2024-06-28 02:11:01,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:01,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231075923] [2024-06-28 02:11:01,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:01,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:04,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:04,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231075923] [2024-06-28 02:11:04,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231075923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:04,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:04,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:11:04,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413393127] [2024-06-28 02:11:04,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:04,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:11:04,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:11:04,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:11:04,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 02:11:04,218 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) [2024-06-28 02:11:04,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:04,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 02:11:04,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:07,297 INFO L124 PetriNetUnfolderBase]: 15154/20879 cut-off events. [2024-06-28 02:11:07,298 INFO L125 PetriNetUnfolderBase]: For 29097/29097 co-relation queries the response was YES. [2024-06-28 02:11:07,352 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 120725 event pairs, 6441 based on Foata normal form. 3/20880 useless extension candidates. Maximal degree in co-relation 62159. Up to 20170 conditions per place. [2024-06-28 02:11:07,423 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 116 selfloop transitions, 26 changer transitions 0/151 dead transitions. [2024-06-28 02:11:07,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 151 transitions, 961 flow [2024-06-28 02:11:07,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:11:07,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:11:07,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-06-28 02:11:07,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760233918128655 [2024-06-28 02:11:07,425 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 405 flow. Second operand 6 states and 197 transitions. [2024-06-28 02:11:07,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 151 transitions, 961 flow [2024-06-28 02:11:07,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 151 transitions, 947 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 02:11:07,445 INFO L231 Difference]: Finished difference. Result has 82 places, 95 transitions, 606 flow [2024-06-28 02:11:07,445 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} [2024-06-28 02:11:07,445 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 19 predicate places. [2024-06-28 02:11:07,446 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 95 transitions, 606 flow [2024-06-28 02:11:07,446 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) [2024-06-28 02:11:07,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:07,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:07,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:11:07,446 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)] === [2024-06-28 02:11:07,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:07,447 INFO L85 PathProgramCache]: Analyzing trace with hash -617412366, now seen corresponding path program 2 times [2024-06-28 02:11:07,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:07,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297746795] [2024-06-28 02:11:07,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:07,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:09,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:09,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297746795] [2024-06-28 02:11:09,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297746795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:09,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:09,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:11:09,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591621915] [2024-06-28 02:11:09,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:09,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:11:09,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:09,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:11:09,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:11:09,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 02:11:09,919 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) [2024-06-28 02:11:09,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:09,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 02:11:09,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:13,896 INFO L124 PetriNetUnfolderBase]: 15145/20875 cut-off events. [2024-06-28 02:11:13,896 INFO L125 PetriNetUnfolderBase]: For 42571/42583 co-relation queries the response was YES. [2024-06-28 02:11:14,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68085 conditions, 20875 events. 15145/20875 cut-off events. For 42571/42583 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 120588 event pairs, 6445 based on Foata normal form. 13/20886 useless extension candidates. Maximal degree in co-relation 68057. Up to 20161 conditions per place. [2024-06-28 02:11:14,098 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 110 selfloop transitions, 28 changer transitions 0/147 dead transitions. [2024-06-28 02:11:14,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 147 transitions, 1027 flow [2024-06-28 02:11:14,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:11:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:11:14,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-06-28 02:11:14,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 02:11:14,100 INFO L175 Difference]: Start difference. First operand has 82 places, 95 transitions, 606 flow. Second operand 6 states and 190 transitions. [2024-06-28 02:11:14,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 147 transitions, 1027 flow [2024-06-28 02:11:14,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 147 transitions, 1007 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-28 02:11:14,161 INFO L231 Difference]: Finished difference. Result has 88 places, 98 transitions, 688 flow [2024-06-28 02:11:14,161 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} [2024-06-28 02:11:14,162 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 25 predicate places. [2024-06-28 02:11:14,162 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 98 transitions, 688 flow [2024-06-28 02:11:14,162 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) [2024-06-28 02:11:14,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:14,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:14,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:11:14,163 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)] === [2024-06-28 02:11:14,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:14,163 INFO L85 PathProgramCache]: Analyzing trace with hash -624554270, now seen corresponding path program 1 times [2024-06-28 02:11:14,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:14,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376586136] [2024-06-28 02:11:14,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:14,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:16,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:16,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:16,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376586136] [2024-06-28 02:11:16,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376586136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:16,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:16,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:11:16,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059219451] [2024-06-28 02:11:16,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:16,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:11:16,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:16,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:11:16,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:11:16,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 02:11:16,344 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) [2024-06-28 02:11:16,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:16,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 02:11:16,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:19,589 INFO L124 PetriNetUnfolderBase]: 15130/21629 cut-off events. [2024-06-28 02:11:19,590 INFO L125 PetriNetUnfolderBase]: For 44459/44459 co-relation queries the response was YES. [2024-06-28 02:11:19,655 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 133345 event pairs, 6907 based on Foata normal form. 6/21634 useless extension candidates. Maximal degree in co-relation 68675. Up to 20193 conditions per place. [2024-06-28 02:11:19,732 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 121 selfloop transitions, 16 changer transitions 0/146 dead transitions. [2024-06-28 02:11:19,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 146 transitions, 1096 flow [2024-06-28 02:11:19,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:11:19,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:11:19,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-28 02:11:19,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5409356725146199 [2024-06-28 02:11:19,734 INFO L175 Difference]: Start difference. First operand has 88 places, 98 transitions, 688 flow. Second operand 6 states and 185 transitions. [2024-06-28 02:11:19,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 146 transitions, 1096 flow [2024-06-28 02:11:19,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 146 transitions, 1064 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 02:11:19,758 INFO L231 Difference]: Finished difference. Result has 92 places, 102 transitions, 739 flow [2024-06-28 02:11:19,759 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} [2024-06-28 02:11:19,759 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 29 predicate places. [2024-06-28 02:11:19,759 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 102 transitions, 739 flow [2024-06-28 02:11:19,760 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) [2024-06-28 02:11:19,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:19,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:19,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:11:19,760 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)] === [2024-06-28 02:11:19,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:19,761 INFO L85 PathProgramCache]: Analyzing trace with hash -882773192, now seen corresponding path program 1 times [2024-06-28 02:11:19,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:19,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041221681] [2024-06-28 02:11:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:19,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:23,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:23,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041221681] [2024-06-28 02:11:23,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041221681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:23,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:23,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:11:23,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741316835] [2024-06-28 02:11:23,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:23,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:11:23,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:23,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:11:23,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:11:23,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 02:11:23,662 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) [2024-06-28 02:11:23,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:23,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 02:11:23,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:27,098 INFO L124 PetriNetUnfolderBase]: 15267/21113 cut-off events. [2024-06-28 02:11:27,098 INFO L125 PetriNetUnfolderBase]: For 57441/57441 co-relation queries the response was YES. [2024-06-28 02:11:27,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72330 conditions, 21113 events. 15267/21113 cut-off events. For 57441/57441 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 123999 event pairs, 5523 based on Foata normal form. 7/21118 useless extension candidates. Maximal degree in co-relation 72296. Up to 20096 conditions per place. [2024-06-28 02:11:27,253 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 142 selfloop transitions, 32 changer transitions 0/183 dead transitions. [2024-06-28 02:11:27,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 183 transitions, 1319 flow [2024-06-28 02:11:27,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:11:27,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:11:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-06-28 02:11:27,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5939849624060151 [2024-06-28 02:11:27,256 INFO L175 Difference]: Start difference. First operand has 92 places, 102 transitions, 739 flow. Second operand 7 states and 237 transitions. [2024-06-28 02:11:27,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 183 transitions, 1319 flow [2024-06-28 02:11:27,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 183 transitions, 1268 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 02:11:27,296 INFO L231 Difference]: Finished difference. Result has 95 places, 107 transitions, 810 flow [2024-06-28 02:11:27,296 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} [2024-06-28 02:11:27,298 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 32 predicate places. [2024-06-28 02:11:27,298 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 107 transitions, 810 flow [2024-06-28 02:11:27,300 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) [2024-06-28 02:11:27,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:27,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:27,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:11:27,300 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)] === [2024-06-28 02:11:27,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:27,300 INFO L85 PathProgramCache]: Analyzing trace with hash -882653222, now seen corresponding path program 2 times [2024-06-28 02:11:27,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:27,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725688050] [2024-06-28 02:11:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:27,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:30,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:30,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:30,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725688050] [2024-06-28 02:11:30,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725688050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:30,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:30,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:11:30,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259898984] [2024-06-28 02:11:30,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:30,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:11:30,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:30,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:11:30,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:11:30,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 02:11:30,367 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) [2024-06-28 02:11:30,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:30,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 02:11:30,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:34,118 INFO L124 PetriNetUnfolderBase]: 15318/21140 cut-off events. [2024-06-28 02:11:34,119 INFO L125 PetriNetUnfolderBase]: For 72611/72611 co-relation queries the response was YES. [2024-06-28 02:11:34,219 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 122521 event pairs, 6006 based on Foata normal form. 3/21141 useless extension candidates. Maximal degree in co-relation 78255. Up to 20249 conditions per place. [2024-06-28 02:11:34,309 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 141 selfloop transitions, 41 changer transitions 0/191 dead transitions. [2024-06-28 02:11:34,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 191 transitions, 1537 flow [2024-06-28 02:11:34,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:11:34,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:11:34,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 232 transitions. [2024-06-28 02:11:34,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.581453634085213 [2024-06-28 02:11:34,312 INFO L175 Difference]: Start difference. First operand has 95 places, 107 transitions, 810 flow. Second operand 7 states and 232 transitions. [2024-06-28 02:11:34,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 191 transitions, 1537 flow [2024-06-28 02:11:34,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 191 transitions, 1447 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:11:34,402 INFO L231 Difference]: Finished difference. Result has 99 places, 121 transitions, 997 flow [2024-06-28 02:11:34,402 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} [2024-06-28 02:11:34,403 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 36 predicate places. [2024-06-28 02:11:34,403 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 121 transitions, 997 flow [2024-06-28 02:11:34,403 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) [2024-06-28 02:11:34,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:34,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:34,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:11:34,404 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)] === [2024-06-28 02:11:34,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:34,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1959018662, now seen corresponding path program 3 times [2024-06-28 02:11:34,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:34,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010144646] [2024-06-28 02:11:34,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:34,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:37,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:37,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:37,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010144646] [2024-06-28 02:11:37,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010144646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:37,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:37,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:11:37,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488558987] [2024-06-28 02:11:37,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:37,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:11:37,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:37,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:11:37,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:11:37,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 02:11:37,429 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) [2024-06-28 02:11:37,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:37,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 02:11:37,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:41,237 INFO L124 PetriNetUnfolderBase]: 15309/21130 cut-off events. [2024-06-28 02:11:41,237 INFO L125 PetriNetUnfolderBase]: For 90283/90283 co-relation queries the response was YES. [2024-06-28 02:11:41,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82865 conditions, 21130 events. 15309/21130 cut-off events. For 90283/90283 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 122395 event pairs, 6025 based on Foata normal form. 3/21129 useless extension candidates. Maximal degree in co-relation 82827. Up to 20240 conditions per place. [2024-06-28 02:11:41,403 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 135 selfloop transitions, 42 changer transitions 0/186 dead transitions. [2024-06-28 02:11:41,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 186 transitions, 1532 flow [2024-06-28 02:11:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:11:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:11:41,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2024-06-28 02:11:41,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5639097744360902 [2024-06-28 02:11:41,405 INFO L175 Difference]: Start difference. First operand has 99 places, 121 transitions, 997 flow. Second operand 7 states and 225 transitions. [2024-06-28 02:11:41,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 186 transitions, 1532 flow [2024-06-28 02:11:41,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 186 transitions, 1483 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 02:11:41,468 INFO L231 Difference]: Finished difference. Result has 104 places, 122 transitions, 1054 flow [2024-06-28 02:11:41,468 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} [2024-06-28 02:11:41,468 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 41 predicate places. [2024-06-28 02:11:41,469 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 122 transitions, 1054 flow [2024-06-28 02:11:41,469 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) [2024-06-28 02:11:41,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:41,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:41,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:11:41,469 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)] === [2024-06-28 02:11:41,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:41,470 INFO L85 PathProgramCache]: Analyzing trace with hash -30889309, now seen corresponding path program 1 times [2024-06-28 02:11:41,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:41,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985333229] [2024-06-28 02:11:41,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:41,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:43,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:43,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985333229] [2024-06-28 02:11:43,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985333229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:43,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:43,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:11:43,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016321035] [2024-06-28 02:11:43,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:43,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:11:43,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:43,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:11:43,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:11:43,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 02:11:43,898 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) [2024-06-28 02:11:43,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:43,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 02:11:43,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:48,355 INFO L124 PetriNetUnfolderBase]: 16218/22354 cut-off events. [2024-06-28 02:11:48,355 INFO L125 PetriNetUnfolderBase]: For 101907/101907 co-relation queries the response was YES. [2024-06-28 02:11:48,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89316 conditions, 22354 events. 16218/22354 cut-off events. For 101907/101907 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 129290 event pairs, 6068 based on Foata normal form. 18/22370 useless extension candidates. Maximal degree in co-relation 89276. Up to 20974 conditions per place. [2024-06-28 02:11:48,529 INFO L140 encePairwiseOnDemand]: 41/57 looper letters, 198 selfloop transitions, 63 changer transitions 0/270 dead transitions. [2024-06-28 02:11:48,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 270 transitions, 2267 flow [2024-06-28 02:11:48,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:11:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:11:48,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 350 transitions. [2024-06-28 02:11:48,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5582137161084529 [2024-06-28 02:11:48,533 INFO L175 Difference]: Start difference. First operand has 104 places, 122 transitions, 1054 flow. Second operand 11 states and 350 transitions. [2024-06-28 02:11:48,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 270 transitions, 2267 flow [2024-06-28 02:11:48,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 270 transitions, 2170 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 02:11:48,623 INFO L231 Difference]: Finished difference. Result has 116 places, 160 transitions, 1521 flow [2024-06-28 02:11:48,623 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=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1521, PETRI_PLACES=116, PETRI_TRANSITIONS=160} [2024-06-28 02:11:48,623 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 53 predicate places. [2024-06-28 02:11:48,623 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 160 transitions, 1521 flow [2024-06-28 02:11:48,624 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) [2024-06-28 02:11:48,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:48,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:48,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:11:48,624 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)] === [2024-06-28 02:11:48,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:48,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1797085009, now seen corresponding path program 2 times [2024-06-28 02:11:48,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:48,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905235171] [2024-06-28 02:11:48,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:48,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:51,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:51,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905235171] [2024-06-28 02:11:51,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905235171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:51,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:51,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:11:51,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609133084] [2024-06-28 02:11:51,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:51,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:11:51,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:51,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:11:51,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:11:51,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 02:11:51,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 160 transitions, 1521 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) [2024-06-28 02:11:51,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:51,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 02:11:51,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:55,991 INFO L124 PetriNetUnfolderBase]: 16304/22492 cut-off events. [2024-06-28 02:11:55,992 INFO L125 PetriNetUnfolderBase]: For 131066/131066 co-relation queries the response was YES. [2024-06-28 02:11:56,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98501 conditions, 22492 events. 16304/22492 cut-off events. For 131066/131066 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 130787 event pairs, 5978 based on Foata normal form. 6/22496 useless extension candidates. Maximal degree in co-relation 98454. Up to 21461 conditions per place. [2024-06-28 02:11:56,173 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 177 selfloop transitions, 49 changer transitions 0/235 dead transitions. [2024-06-28 02:11:56,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 235 transitions, 2257 flow [2024-06-28 02:11:56,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:11:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:11:56,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-06-28 02:11:56,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.568922305764411 [2024-06-28 02:11:56,176 INFO L175 Difference]: Start difference. First operand has 116 places, 160 transitions, 1521 flow. Second operand 7 states and 227 transitions. [2024-06-28 02:11:56,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 235 transitions, 2257 flow [2024-06-28 02:11:56,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 235 transitions, 2194 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-28 02:11:56,354 INFO L231 Difference]: Finished difference. Result has 121 places, 165 transitions, 1640 flow [2024-06-28 02:11:56,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1640, PETRI_PLACES=121, PETRI_TRANSITIONS=165} [2024-06-28 02:11:56,355 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 58 predicate places. [2024-06-28 02:11:56,355 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 165 transitions, 1640 flow [2024-06-28 02:11:56,355 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) [2024-06-28 02:11:56,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:56,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:56,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:11:56,356 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)] === [2024-06-28 02:11:56,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:56,356 INFO L85 PathProgramCache]: Analyzing trace with hash -627734255, now seen corresponding path program 3 times [2024-06-28 02:11:56,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:56,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726140817] [2024-06-28 02:11:56,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:56,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:59,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:59,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:59,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726140817] [2024-06-28 02:11:59,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726140817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:59,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:59,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:11:59,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904613422] [2024-06-28 02:11:59,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:59,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:11:59,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:59,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:11:59,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:11:59,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 02:11:59,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 165 transitions, 1640 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) [2024-06-28 02:11:59,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:59,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 02:11:59,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:03,199 INFO L124 PetriNetUnfolderBase]: 16390/22624 cut-off events. [2024-06-28 02:12:03,200 INFO L125 PetriNetUnfolderBase]: For 150900/150912 co-relation queries the response was YES. [2024-06-28 02:12:03,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102613 conditions, 22624 events. 16390/22624 cut-off events. For 150900/150912 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 131410 event pairs, 6016 based on Foata normal form. 16/22637 useless extension candidates. Maximal degree in co-relation 102564. Up to 21641 conditions per place. [2024-06-28 02:12:03,428 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 182 selfloop transitions, 47 changer transitions 0/238 dead transitions. [2024-06-28 02:12:03,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 238 transitions, 2380 flow [2024-06-28 02:12:03,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:03,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-06-28 02:12:03,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5588972431077694 [2024-06-28 02:12:03,439 INFO L175 Difference]: Start difference. First operand has 121 places, 165 transitions, 1640 flow. Second operand 7 states and 223 transitions. [2024-06-28 02:12:03,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 238 transitions, 2380 flow [2024-06-28 02:12:03,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 238 transitions, 2262 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 02:12:03,634 INFO L231 Difference]: Finished difference. Result has 123 places, 168 transitions, 1677 flow [2024-06-28 02:12:03,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1522, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1677, PETRI_PLACES=123, PETRI_TRANSITIONS=168} [2024-06-28 02:12:03,636 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 60 predicate places. [2024-06-28 02:12:03,636 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 168 transitions, 1677 flow [2024-06-28 02:12:03,636 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) [2024-06-28 02:12:03,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:03,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:03,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:12:03,636 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)] === [2024-06-28 02:12:03,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:03,637 INFO L85 PathProgramCache]: Analyzing trace with hash -593356625, now seen corresponding path program 4 times [2024-06-28 02:12:03,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:03,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271592526] [2024-06-28 02:12:03,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:03,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:06,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:06,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271592526] [2024-06-28 02:12:06,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271592526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:06,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:06,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:06,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564706213] [2024-06-28 02:12:06,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:06,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:06,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:06,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:06,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:06,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 02:12:06,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 168 transitions, 1677 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) [2024-06-28 02:12:06,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:06,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 02:12:06,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:10,623 INFO L124 PetriNetUnfolderBase]: 16375/22617 cut-off events. [2024-06-28 02:12:10,624 INFO L125 PetriNetUnfolderBase]: For 169828/169840 co-relation queries the response was YES. [2024-06-28 02:12:10,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105214 conditions, 22617 events. 16375/22617 cut-off events. For 169828/169840 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 131467 event pairs, 5493 based on Foata normal form. 16/22630 useless extension candidates. Maximal degree in co-relation 105164. Up to 21342 conditions per place. [2024-06-28 02:12:10,789 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 175 selfloop transitions, 59 changer transitions 0/243 dead transitions. [2024-06-28 02:12:10,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 243 transitions, 2471 flow [2024-06-28 02:12:10,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:10,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:10,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-06-28 02:12:10,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2024-06-28 02:12:10,800 INFO L175 Difference]: Start difference. First operand has 123 places, 168 transitions, 1677 flow. Second operand 7 states and 224 transitions. [2024-06-28 02:12:10,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 243 transitions, 2471 flow [2024-06-28 02:12:11,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 243 transitions, 2338 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 02:12:11,042 INFO L231 Difference]: Finished difference. Result has 126 places, 174 transitions, 1802 flow [2024-06-28 02:12:11,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1802, PETRI_PLACES=126, PETRI_TRANSITIONS=174} [2024-06-28 02:12:11,043 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 63 predicate places. [2024-06-28 02:12:11,043 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 174 transitions, 1802 flow [2024-06-28 02:12:11,044 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) [2024-06-28 02:12:11,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:11,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:11,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:12:11,044 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)] === [2024-06-28 02:12:11,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:11,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1638823765, now seen corresponding path program 1 times [2024-06-28 02:12:11,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:11,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336920943] [2024-06-28 02:12:11,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:11,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:14,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:14,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336920943] [2024-06-28 02:12:14,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336920943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:14,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:14,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:14,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469017610] [2024-06-28 02:12:14,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:14,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:14,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:14,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:14,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:14,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 02:12:14,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 174 transitions, 1802 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) [2024-06-28 02:12:14,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:14,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 02:12:14,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:20,680 INFO L124 PetriNetUnfolderBase]: 19395/27019 cut-off events. [2024-06-28 02:12:20,681 INFO L125 PetriNetUnfolderBase]: For 260368/260368 co-relation queries the response was YES. [2024-06-28 02:12:20,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132046 conditions, 27019 events. 19395/27019 cut-off events. For 260368/260368 co-relation queries the response was YES. Maximal size of possible extension queue 967. Compared 164856 event pairs, 4829 based on Foata normal form. 78/27095 useless extension candidates. Maximal degree in co-relation 131994. Up to 22096 conditions per place. [2024-06-28 02:12:20,960 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 248 selfloop transitions, 47 changer transitions 0/304 dead transitions. [2024-06-28 02:12:20,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 304 transitions, 2994 flow [2024-06-28 02:12:20,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:12:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:12:20,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 317 transitions. [2024-06-28 02:12:20,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6179337231968811 [2024-06-28 02:12:20,964 INFO L175 Difference]: Start difference. First operand has 126 places, 174 transitions, 1802 flow. Second operand 9 states and 317 transitions. [2024-06-28 02:12:20,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 304 transitions, 2994 flow [2024-06-28 02:12:21,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 304 transitions, 2891 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:21,325 INFO L231 Difference]: Finished difference. Result has 133 places, 180 transitions, 1922 flow [2024-06-28 02:12:21,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1922, PETRI_PLACES=133, PETRI_TRANSITIONS=180} [2024-06-28 02:12:21,326 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 70 predicate places. [2024-06-28 02:12:21,326 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 180 transitions, 1922 flow [2024-06-28 02:12:21,326 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) [2024-06-28 02:12:21,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:21,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:21,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:12:21,327 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)] === [2024-06-28 02:12:21,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:21,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1654151641, now seen corresponding path program 2 times [2024-06-28 02:12:21,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:21,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856468969] [2024-06-28 02:12:21,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:21,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:25,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:25,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856468969] [2024-06-28 02:12:25,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856468969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:25,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:25,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:25,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126220884] [2024-06-28 02:12:25,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:25,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:25,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:25,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:25,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:25,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 02:12:25,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 180 transitions, 1922 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) [2024-06-28 02:12:25,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:25,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 02:12:25,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:31,035 INFO L124 PetriNetUnfolderBase]: 19169/26745 cut-off events. [2024-06-28 02:12:31,035 INFO L125 PetriNetUnfolderBase]: For 284395/284395 co-relation queries the response was YES. [2024-06-28 02:12:31,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133701 conditions, 26745 events. 19169/26745 cut-off events. For 284395/284395 co-relation queries the response was YES. Maximal size of possible extension queue 958. Compared 163754 event pairs, 6179 based on Foata normal form. 92/26835 useless extension candidates. Maximal degree in co-relation 133646. Up to 23810 conditions per place. [2024-06-28 02:12:31,491 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 228 selfloop transitions, 43 changer transitions 0/280 dead transitions. [2024-06-28 02:12:31,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 280 transitions, 2811 flow [2024-06-28 02:12:31,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:31,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:31,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-06-28 02:12:31,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6030701754385965 [2024-06-28 02:12:31,493 INFO L175 Difference]: Start difference. First operand has 133 places, 180 transitions, 1922 flow. Second operand 8 states and 275 transitions. [2024-06-28 02:12:31,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 280 transitions, 2811 flow [2024-06-28 02:12:31,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 280 transitions, 2728 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 02:12:31,945 INFO L231 Difference]: Finished difference. Result has 136 places, 181 transitions, 1961 flow [2024-06-28 02:12:31,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1845, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1961, PETRI_PLACES=136, PETRI_TRANSITIONS=181} [2024-06-28 02:12:31,945 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 73 predicate places. [2024-06-28 02:12:31,946 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 181 transitions, 1961 flow [2024-06-28 02:12:31,946 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) [2024-06-28 02:12:31,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:31,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:31,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:12:31,946 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)] === [2024-06-28 02:12:31,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:31,947 INFO L85 PathProgramCache]: Analyzing trace with hash 124756889, now seen corresponding path program 3 times [2024-06-28 02:12:31,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:31,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931218511] [2024-06-28 02:12:31,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:31,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:35,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:35,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931218511] [2024-06-28 02:12:35,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931218511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:35,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:35,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:35,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801764587] [2024-06-28 02:12:35,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:35,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:35,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:35,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:35,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:35,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 02:12:35,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 181 transitions, 1961 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) [2024-06-28 02:12:35,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:35,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 02:12:35,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand