./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix021.opt.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/mix021.opt.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/mix021.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix021.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:27:47,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:27:47,839 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:27:47,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:27:47,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:27:47,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:27:47,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:27:47,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:27:47,877 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:27:47,881 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:27:47,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:27:47,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:27:47,882 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:27:47,883 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:27:47,884 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:27:47,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:27:47,884 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:27:47,884 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:27:47,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:27:47,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:27:47,885 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:27:47,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:27:47,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:27:47,886 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:27:47,886 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:27:47,887 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:27:47,887 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:27:47,887 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:27:47,888 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:27:47,888 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:27:47,889 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:27:47,889 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:27:47,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:27:47,890 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:27:47,890 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:27:47,890 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:27:47,890 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:27:47,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:27:47,891 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:27:47,891 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:27:47,891 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:27:47,892 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:27:47,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:27:47,892 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:27:48,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:27:48,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:27:48,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:27:48,172 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:27:48,173 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:27:48,174 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix021.opt.i [2024-06-28 01:27:49,320 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:27:49,588 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:27:49,589 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021.opt.i [2024-06-28 01:27:49,604 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f9cf4d49/5b71e506db624292acdb3dc9c96215ed/FLAG1d908a0a5 [2024-06-28 01:27:49,620 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f9cf4d49/5b71e506db624292acdb3dc9c96215ed [2024-06-28 01:27:49,624 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:27:49,625 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:27:49,627 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix021.opt.yml/witness.yml [2024-06-28 01:27:49,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:27:49,856 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:27:49,858 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:27:49,858 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:27:49,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:27:49,863 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:27:49" (1/2) ... [2024-06-28 01:27:49,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c83bd44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:27:49, skipping insertion in model container [2024-06-28 01:27:49,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:27:49" (1/2) ... [2024-06-28 01:27:49,866 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@d351778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:27:49, skipping insertion in model container [2024-06-28 01:27:49,866 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:27:49" (2/2) ... [2024-06-28 01:27:49,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c83bd44 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:49, skipping insertion in model container [2024-06-28 01:27:49,867 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:27:49" (2/2) ... [2024-06-28 01:27:49,867 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:27:49,991 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:27:49,993 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] (((((((((((((((((((((! multithreaded || z$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-06-28 01:27:49,993 INFO L97 edCorrectnessWitness]: Location invariant before [L870-L870] (((((((((((((((((((((! multithreaded || z$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-06-28 01:27:49,993 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((! multithreaded || z$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-06-28 01:27:49,994 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] (((((((((((((((((((((! multithreaded || z$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-06-28 01:27:49,994 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:27:49,995 INFO L106 edCorrectnessWitness]: ghost_update [L863-L863] multithreaded = 1; [2024-06-28 01:27:50,045 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:27:50,246 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/mix021.opt.i[944,957] [2024-06-28 01:27:50,452 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:27:50,461 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:27:50,497 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/mix021.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:27:50,592 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:27:50,628 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:27:50,628 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:50 WrapperNode [2024-06-28 01:27:50,628 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:27:50,629 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:27:50,629 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:27:50,630 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:27:50,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:50" (1/1) ... [2024-06-28 01:27:50,678 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:50" (1/1) ... [2024-06-28 01:27:50,713 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 156 [2024-06-28 01:27:50,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:27:50,714 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:27:50,716 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:27:50,725 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:27:50,735 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:50" (1/1) ... [2024-06-28 01:27:50,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:50" (1/1) ... [2024-06-28 01:27:50,739 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:50" (1/1) ... [2024-06-28 01:27:50,757 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:27:50,757 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:50" (1/1) ... [2024-06-28 01:27:50,757 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:50" (1/1) ... [2024-06-28 01:27:50,774 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:50" (1/1) ... [2024-06-28 01:27:50,776 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:50" (1/1) ... [2024-06-28 01:27:50,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:50" (1/1) ... [2024-06-28 01:27:50,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:50" (1/1) ... [2024-06-28 01:27:50,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:27:50,816 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:27:50,816 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:27:50,817 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:27:50,817 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:50" (1/1) ... [2024-06-28 01:27:50,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:27:50,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:27:50,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:27:50,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:27:50,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:27:50,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:27:50,898 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:27:50,898 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:27:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:27:50,899 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:27:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:27:50,899 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:27:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 01:27:50,900 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 01:27:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:27:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:27:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:27:50,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:27:50,905 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:27:51,067 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:27:51,070 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:27:51,500 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:27:51,501 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:27:51,731 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:27:51,731 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:27:51,732 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:27:51 BoogieIcfgContainer [2024-06-28 01:27:51,732 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:27:51,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:27:51,735 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:27:51,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:27:51,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:27:49" (1/4) ... [2024-06-28 01:27:51,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5752ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:27:51, skipping insertion in model container [2024-06-28 01:27:51,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:27:49" (2/4) ... [2024-06-28 01:27:51,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5752ab and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:27:51, skipping insertion in model container [2024-06-28 01:27:51,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:27:50" (3/4) ... [2024-06-28 01:27:51,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5752ab and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:27:51, skipping insertion in model container [2024-06-28 01:27:51,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:27:51" (4/4) ... [2024-06-28 01:27:51,741 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021.opt.i [2024-06-28 01:27:51,758 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:27:51,758 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-28 01:27:51,758 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:27:51,813 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:27:51,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 58 transitions, 132 flow [2024-06-28 01:27:51,893 INFO L124 PetriNetUnfolderBase]: 1/54 cut-off events. [2024-06-28 01:27:51,893 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:27:51,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-06-28 01:27:51,897 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 58 transitions, 132 flow [2024-06-28 01:27:51,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 54 transitions, 120 flow [2024-06-28 01:27:51,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:27:51,930 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;@397cfc26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:27:51,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-28 01:27:51,937 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:27:51,937 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:27:51,937 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:27:51,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:51,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:27:51,939 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:27:51,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:51,976 INFO L85 PathProgramCache]: Analyzing trace with hash 392038411, now seen corresponding path program 1 times [2024-06-28 01:27:52,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:52,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772400786] [2024-06-28 01:27:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:52,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:53,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:53,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:53,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772400786] [2024-06-28 01:27:53,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772400786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:53,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:53,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:27:53,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211988422] [2024-06-28 01:27:53,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:53,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:27:53,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:53,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:27:53,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:27:53,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-06-28 01:27:53,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:53,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:53,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-06-28 01:27:53,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:56,633 INFO L124 PetriNetUnfolderBase]: 20441/28049 cut-off events. [2024-06-28 01:27:56,633 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-06-28 01:27:56,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55550 conditions, 28049 events. 20441/28049 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 1026. Compared 171674 event pairs, 13989 based on Foata normal form. 876/27571 useless extension candidates. Maximal degree in co-relation 55537. Up to 27168 conditions per place. [2024-06-28 01:27:56,879 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 51 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-06-28 01:27:56,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 279 flow [2024-06-28 01:27:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:27:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:27:56,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-06-28 01:27:56,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6896551724137931 [2024-06-28 01:27:56,893 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 120 transitions. [2024-06-28 01:27:56,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 279 flow [2024-06-28 01:27:57,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 272 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:27:57,011 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 160 flow [2024-06-28 01:27:57,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-06-28 01:27:57,016 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-06-28 01:27:57,017 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 160 flow [2024-06-28 01:27:57,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:57,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:57,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:57,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:27:57,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:27:57,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:57,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1207074466, now seen corresponding path program 1 times [2024-06-28 01:27:57,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:57,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622198543] [2024-06-28 01:27:57,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:57,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:57,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:57,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622198543] [2024-06-28 01:27:57,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622198543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:57,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:57,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:27:57,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485359684] [2024-06-28 01:27:57,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:57,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:27:57,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:57,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:27:57,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:27:57,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-28 01:27:57,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:57,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:57,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-28 01:27:57,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:01,190 INFO L124 PetriNetUnfolderBase]: 23280/34556 cut-off events. [2024-06-28 01:28:01,191 INFO L125 PetriNetUnfolderBase]: For 5350/5350 co-relation queries the response was YES. [2024-06-28 01:28:01,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73237 conditions, 34556 events. 23280/34556 cut-off events. For 5350/5350 co-relation queries the response was YES. Maximal size of possible extension queue 1306. Compared 244900 event pairs, 18099 based on Foata normal form. 4/32631 useless extension candidates. Maximal degree in co-relation 73225. Up to 30849 conditions per place. [2024-06-28 01:28:01,383 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 66 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2024-06-28 01:28:01,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 400 flow [2024-06-28 01:28:01,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:28:01,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:28:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2024-06-28 01:28:01,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6594827586206896 [2024-06-28 01:28:01,391 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 160 flow. Second operand 4 states and 153 transitions. [2024-06-28 01:28:01,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 400 flow [2024-06-28 01:28:01,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:28:01,397 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 218 flow [2024-06-28 01:28:01,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2024-06-28 01:28:01,398 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-06-28 01:28:01,400 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 218 flow [2024-06-28 01:28:01,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:01,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:01,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:01,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:28:01,408 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:28:01,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:01,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1235398500, now seen corresponding path program 1 times [2024-06-28 01:28:01,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:01,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402232543] [2024-06-28 01:28:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:01,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:02,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:02,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402232543] [2024-06-28 01:28:02,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402232543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:02,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:02,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:28:02,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155516307] [2024-06-28 01:28:02,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:02,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:28:02,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:02,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:28:02,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:28:02,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-28 01:28:02,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:02,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:02,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-28 01:28:02,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:05,349 INFO L124 PetriNetUnfolderBase]: 23320/33667 cut-off events. [2024-06-28 01:28:05,349 INFO L125 PetriNetUnfolderBase]: For 14086/14086 co-relation queries the response was YES. [2024-06-28 01:28:05,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79871 conditions, 33667 events. 23320/33667 cut-off events. For 14086/14086 co-relation queries the response was YES. Maximal size of possible extension queue 1204. Compared 226066 event pairs, 12647 based on Foata normal form. 7/31971 useless extension candidates. Maximal degree in co-relation 79857. Up to 30752 conditions per place. [2024-06-28 01:28:05,566 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 88 selfloop transitions, 26 changer transitions 0/128 dead transitions. [2024-06-28 01:28:05,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 128 transitions, 662 flow [2024-06-28 01:28:05,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:28:05,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:28:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2024-06-28 01:28:05,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6896551724137931 [2024-06-28 01:28:05,569 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 218 flow. Second operand 5 states and 200 transitions. [2024-06-28 01:28:05,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 128 transitions, 662 flow [2024-06-28 01:28:05,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 128 transitions, 638 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:05,578 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 379 flow [2024-06-28 01:28:05,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2024-06-28 01:28:05,579 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2024-06-28 01:28:05,579 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 379 flow [2024-06-28 01:28:05,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:05,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:05,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:05,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:28:05,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:28:05,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:05,581 INFO L85 PathProgramCache]: Analyzing trace with hash -765434217, now seen corresponding path program 1 times [2024-06-28 01:28:05,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:05,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669028025] [2024-06-28 01:28:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:05,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:06,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:06,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:06,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669028025] [2024-06-28 01:28:06,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669028025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:06,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:06,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:28:06,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366511786] [2024-06-28 01:28:06,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:06,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:28:06,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:06,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:28:06,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:28:06,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-28 01:28:06,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:06,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:06,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-28 01:28:06,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:09,713 INFO L124 PetriNetUnfolderBase]: 23389/34777 cut-off events. [2024-06-28 01:28:09,714 INFO L125 PetriNetUnfolderBase]: For 36588/36593 co-relation queries the response was YES. [2024-06-28 01:28:09,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93426 conditions, 34777 events. 23389/34777 cut-off events. For 36588/36593 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 246379 event pairs, 12717 based on Foata normal form. 18/32884 useless extension candidates. Maximal degree in co-relation 93409. Up to 30733 conditions per place. [2024-06-28 01:28:09,943 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 99 selfloop transitions, 31 changer transitions 0/144 dead transitions. [2024-06-28 01:28:09,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 144 transitions, 845 flow [2024-06-28 01:28:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:28:09,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:28:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 234 transitions. [2024-06-28 01:28:09,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2024-06-28 01:28:09,947 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 379 flow. Second operand 6 states and 234 transitions. [2024-06-28 01:28:09,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 144 transitions, 845 flow [2024-06-28 01:28:09,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 144 transitions, 829 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-06-28 01:28:09,964 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 475 flow [2024-06-28 01:28:09,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=475, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2024-06-28 01:28:09,966 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-06-28 01:28:09,966 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 475 flow [2024-06-28 01:28:09,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:09,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:09,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:09,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:28:09,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:28:09,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:09,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1485657796, now seen corresponding path program 1 times [2024-06-28 01:28:09,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:09,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728184039] [2024-06-28 01:28:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:09,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:10,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:10,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:10,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728184039] [2024-06-28 01:28:10,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728184039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:10,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:10,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:28:10,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73231989] [2024-06-28 01:28:10,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:10,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:28:10,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:10,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:28:10,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:28:11,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-06-28 01:28:11,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 475 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:11,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:11,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-06-28 01:28:11,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:14,200 INFO L124 PetriNetUnfolderBase]: 23393/32176 cut-off events. [2024-06-28 01:28:14,200 INFO L125 PetriNetUnfolderBase]: For 47877/47877 co-relation queries the response was YES. [2024-06-28 01:28:14,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98975 conditions, 32176 events. 23393/32176 cut-off events. For 47877/47877 co-relation queries the response was YES. Maximal size of possible extension queue 1110. Compared 198018 event pairs, 10280 based on Foata normal form. 3/30872 useless extension candidates. Maximal degree in co-relation 98954. Up to 30998 conditions per place. [2024-06-28 01:28:14,396 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 86 selfloop transitions, 12 changer transitions 0/111 dead transitions. [2024-06-28 01:28:14,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 111 transitions, 735 flow [2024-06-28 01:28:14,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:28:14,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:28:14,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-06-28 01:28:14,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5655172413793104 [2024-06-28 01:28:14,402 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 475 flow. Second operand 5 states and 164 transitions. [2024-06-28 01:28:14,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 111 transitions, 735 flow [2024-06-28 01:28:14,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 111 transitions, 647 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:14,425 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 423 flow [2024-06-28 01:28:14,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=423, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-06-28 01:28:14,426 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2024-06-28 01:28:14,426 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 423 flow [2024-06-28 01:28:14,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:14,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:14,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:14,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:28:14,427 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:28:14,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:14,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1180917878, now seen corresponding path program 1 times [2024-06-28 01:28:14,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:14,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21467139] [2024-06-28 01:28:14,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:14,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:15,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:15,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:15,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21467139] [2024-06-28 01:28:15,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21467139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:15,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:15,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:28:15,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676898247] [2024-06-28 01:28:15,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:15,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:28:15,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:15,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:28:15,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:28:15,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-06-28 01:28:15,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 423 flow. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:15,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:15,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-06-28 01:28:15,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:19,152 INFO L124 PetriNetUnfolderBase]: 23481/32551 cut-off events. [2024-06-28 01:28:19,153 INFO L125 PetriNetUnfolderBase]: For 50610/50610 co-relation queries the response was YES. [2024-06-28 01:28:19,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99825 conditions, 32551 events. 23481/32551 cut-off events. For 50610/50610 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 201540 event pairs, 9791 based on Foata normal form. 7/31490 useless extension candidates. Maximal degree in co-relation 99802. Up to 30872 conditions per place. [2024-06-28 01:28:19,316 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 107 selfloop transitions, 27 changer transitions 0/147 dead transitions. [2024-06-28 01:28:19,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 147 transitions, 951 flow [2024-06-28 01:28:19,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:28:19,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:28:19,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 209 transitions. [2024-06-28 01:28:19,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6005747126436781 [2024-06-28 01:28:19,318 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 423 flow. Second operand 6 states and 209 transitions. [2024-06-28 01:28:19,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 147 transitions, 951 flow [2024-06-28 01:28:19,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 147 transitions, 915 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:19,337 INFO L231 Difference]: Finished difference. Result has 83 places, 101 transitions, 608 flow [2024-06-28 01:28:19,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=608, PETRI_PLACES=83, PETRI_TRANSITIONS=101} [2024-06-28 01:28:19,338 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-06-28 01:28:19,338 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 101 transitions, 608 flow [2024-06-28 01:28:19,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:19,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:19,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:19,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:28:19,339 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:28:19,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:19,340 INFO L85 PathProgramCache]: Analyzing trace with hash -2051972103, now seen corresponding path program 1 times [2024-06-28 01:28:19,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:19,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154226419] [2024-06-28 01:28:19,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:19,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:20,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:20,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:20,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154226419] [2024-06-28 01:28:20,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154226419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:20,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:20,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:28:20,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715608492] [2024-06-28 01:28:20,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:20,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:28:20,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:20,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:28:20,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:28:20,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:28:20,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 101 transitions, 608 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:20,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:20,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:28:20,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:24,189 INFO L124 PetriNetUnfolderBase]: 26795/35880 cut-off events. [2024-06-28 01:28:24,189 INFO L125 PetriNetUnfolderBase]: For 90397/90407 co-relation queries the response was YES. [2024-06-28 01:28:24,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124788 conditions, 35880 events. 26795/35880 cut-off events. For 90397/90407 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 210422 event pairs, 11384 based on Foata normal form. 14/34841 useless extension candidates. Maximal degree in co-relation 124763. Up to 35250 conditions per place. [2024-06-28 01:28:24,426 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 108 selfloop transitions, 31 changer transitions 0/151 dead transitions. [2024-06-28 01:28:24,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 151 transitions, 1068 flow [2024-06-28 01:28:24,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:28:24,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:28:24,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-06-28 01:28:24,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 01:28:24,429 INFO L175 Difference]: Start difference. First operand has 83 places, 101 transitions, 608 flow. Second operand 6 states and 203 transitions. [2024-06-28 01:28:24,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 151 transitions, 1068 flow [2024-06-28 01:28:24,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 151 transitions, 1036 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-28 01:28:24,503 INFO L231 Difference]: Finished difference. Result has 88 places, 106 transitions, 694 flow [2024-06-28 01:28:24,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=694, PETRI_PLACES=88, PETRI_TRANSITIONS=106} [2024-06-28 01:28:24,504 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 22 predicate places. [2024-06-28 01:28:24,504 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 106 transitions, 694 flow [2024-06-28 01:28:24,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:24,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:24,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:24,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:28:24,505 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:28:24,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:24,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1787970213, now seen corresponding path program 2 times [2024-06-28 01:28:24,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:24,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95238847] [2024-06-28 01:28:24,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:24,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:25,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:25,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95238847] [2024-06-28 01:28:25,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95238847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:25,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:25,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:28:25,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188954562] [2024-06-28 01:28:25,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:25,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:28:25,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:25,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:28:25,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:28:25,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:28:25,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 106 transitions, 694 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:25,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:25,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:28:25,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:29,472 INFO L124 PetriNetUnfolderBase]: 26767/35828 cut-off events. [2024-06-28 01:28:29,472 INFO L125 PetriNetUnfolderBase]: For 93960/93960 co-relation queries the response was YES. [2024-06-28 01:28:29,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124318 conditions, 35828 events. 26767/35828 cut-off events. For 93960/93960 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 209940 event pairs, 11414 based on Foata normal form. 3/34775 useless extension candidates. Maximal degree in co-relation 124290. Up to 35216 conditions per place. [2024-06-28 01:28:29,693 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 101 selfloop transitions, 32 changer transitions 0/145 dead transitions. [2024-06-28 01:28:29,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 145 transitions, 1052 flow [2024-06-28 01:28:29,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:28:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:28:29,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-06-28 01:28:29,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-06-28 01:28:29,695 INFO L175 Difference]: Start difference. First operand has 88 places, 106 transitions, 694 flow. Second operand 6 states and 198 transitions. [2024-06-28 01:28:29,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 145 transitions, 1052 flow [2024-06-28 01:28:29,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 145 transitions, 995 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:28:29,756 INFO L231 Difference]: Finished difference. Result has 91 places, 106 transitions, 713 flow [2024-06-28 01:28:29,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=713, PETRI_PLACES=91, PETRI_TRANSITIONS=106} [2024-06-28 01:28:29,757 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 25 predicate places. [2024-06-28 01:28:29,757 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 106 transitions, 713 flow [2024-06-28 01:28:29,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:29,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:29,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:29,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:28:29,758 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:28:29,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:29,758 INFO L85 PathProgramCache]: Analyzing trace with hash 597189303, now seen corresponding path program 1 times [2024-06-28 01:28:29,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:29,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720242603] [2024-06-28 01:28:29,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:29,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:30,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:30,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720242603] [2024-06-28 01:28:30,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720242603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:30,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:30,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:30,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580214354] [2024-06-28 01:28:30,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:30,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:30,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:30,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:30,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:30,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:28:30,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 106 transitions, 713 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 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 01:28:30,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:30,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:28:30,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:34,978 INFO L124 PetriNetUnfolderBase]: 28575/38323 cut-off events. [2024-06-28 01:28:34,978 INFO L125 PetriNetUnfolderBase]: For 112681/112687 co-relation queries the response was YES. [2024-06-28 01:28:35,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136009 conditions, 38323 events. 28575/38323 cut-off events. For 112681/112687 co-relation queries the response was YES. Maximal size of possible extension queue 1218. Compared 224187 event pairs, 9174 based on Foata normal form. 15/36982 useless extension candidates. Maximal degree in co-relation 135980. Up to 35441 conditions per place. [2024-06-28 01:28:35,254 INFO L140 encePairwiseOnDemand]: 39/58 looper letters, 158 selfloop transitions, 78 changer transitions 0/248 dead transitions. [2024-06-28 01:28:35,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 248 transitions, 2054 flow [2024-06-28 01:28:35,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:35,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:35,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 294 transitions. [2024-06-28 01:28:35,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6336206896551724 [2024-06-28 01:28:35,256 INFO L175 Difference]: Start difference. First operand has 91 places, 106 transitions, 713 flow. Second operand 8 states and 294 transitions. [2024-06-28 01:28:35,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 248 transitions, 2054 flow [2024-06-28 01:28:35,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 248 transitions, 1854 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:35,348 INFO L231 Difference]: Finished difference. Result has 96 places, 152 transitions, 1181 flow [2024-06-28 01:28:35,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1181, PETRI_PLACES=96, PETRI_TRANSITIONS=152} [2024-06-28 01:28:35,349 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 30 predicate places. [2024-06-28 01:28:35,349 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 152 transitions, 1181 flow [2024-06-28 01:28:35,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 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 01:28:35,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:35,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:35,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:28:35,350 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:28:35,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:35,351 INFO L85 PathProgramCache]: Analyzing trace with hash 813375415, now seen corresponding path program 2 times [2024-06-28 01:28:35,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:35,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383612705] [2024-06-28 01:28:35,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:35,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:36,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:36,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:36,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383612705] [2024-06-28 01:28:36,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383612705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:36,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:36,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:36,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848660997] [2024-06-28 01:28:36,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:36,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:36,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:36,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:36,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:36,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:28:36,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 152 transitions, 1181 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 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 01:28:36,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:36,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:28:36,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand