./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix036.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix036.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix036.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix036.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:33:42,574 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:33:42,646 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:33:42,653 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:33:42,654 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:33:42,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:33:42,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:33:42,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:33:42,682 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:33:42,686 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:33:42,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:33:42,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:33:42,688 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:33:42,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:33:42,689 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:33:42,689 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:33:42,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:33:42,690 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:33:42,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:33:42,690 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:33:42,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:33:42,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:33:42,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:33:42,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:33:42,692 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:33:42,692 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:33:42,692 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:33:42,692 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:33:42,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:33:42,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:33:42,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:33:42,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:33:42,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:33:42,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:33:42,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:33:42,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:33:42,695 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:33:42,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:33:42,695 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:33:42,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:33:42,696 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:33:42,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:33:42,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:33:42,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:33:42,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:33:42,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:33:42,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:33:42,907 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:33:42,907 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:33:42,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix036.oepc.i [2024-06-28 01:33:43,950 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:33:44,155 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:33:44,156 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix036.oepc.i [2024-06-28 01:33:44,167 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f157f2cf/62aee0e87e6a46158876c7db810b8435/FLAGc1a98e70b [2024-06-28 01:33:44,511 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f157f2cf/62aee0e87e6a46158876c7db810b8435 [2024-06-28 01:33:44,513 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:33:44,514 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:33:44,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix036.oepc.yml/witness.yml [2024-06-28 01:33:44,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:33:44,723 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:33:44,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:33:44,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:33:44,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:33:44,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:33:44" (1/2) ... [2024-06-28 01:33:44,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c3385c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:33:44, skipping insertion in model container [2024-06-28 01:33:44,730 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:33:44" (1/2) ... [2024-06-28 01:33:44,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21f00676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:33:44, skipping insertion in model container [2024-06-28 01:33:44,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:33:44" (2/2) ... [2024-06-28 01:33:44,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c3385c5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:33:44, skipping insertion in model container [2024-06-28 01:33:44,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:33:44" (2/2) ... [2024-06-28 01:33:44,732 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:33:44,840 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:33:44,842 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] ((((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff0_thd4 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$r_buff1_thd4 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__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)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-28 01:33:44,842 INFO L97 edCorrectnessWitness]: Location invariant before [L880-L880] ((((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff0_thd4 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$r_buff1_thd4 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-28 01:33:44,842 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ((((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff0_thd4 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$r_buff1_thd4 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__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)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-28 01:33:44,842 INFO L97 edCorrectnessWitness]: Location invariant before [L881-L881] ((((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff0_thd4 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$r_buff1_thd4 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1))) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-28 01:33:44,842 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:33:44,843 INFO L106 edCorrectnessWitness]: ghost_update [L874-L874] multithreaded = 1; [2024-06-28 01:33:44,887 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:33:45,041 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/mix036.oepc.i[945,958] [2024-06-28 01:33:45,202 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:33:45,212 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:33:45,244 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/mix036.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:33:45,323 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:33:45,349 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:33:45,349 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:33:45 WrapperNode [2024-06-28 01:33:45,350 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:33:45,350 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:33:45,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:33:45,351 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:33:45,356 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 01:33:45" (1/1) ... [2024-06-28 01:33:45,368 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 01:33:45" (1/1) ... [2024-06-28 01:33:45,396 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 137 [2024-06-28 01:33:45,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:33:45,398 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:33:45,398 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:33:45,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:33:45,406 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 01:33:45" (1/1) ... [2024-06-28 01:33:45,407 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 01:33:45" (1/1) ... [2024-06-28 01:33:45,410 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 01:33:45" (1/1) ... [2024-06-28 01:33:45,424 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 01:33:45,424 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 01:33:45" (1/1) ... [2024-06-28 01:33:45,424 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 01:33:45" (1/1) ... [2024-06-28 01:33:45,432 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 01:33:45" (1/1) ... [2024-06-28 01:33:45,434 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 01:33:45" (1/1) ... [2024-06-28 01:33:45,436 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 01:33:45" (1/1) ... [2024-06-28 01:33:45,437 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 01:33:45" (1/1) ... [2024-06-28 01:33:45,440 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:33:45,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:33:45,441 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:33:45,441 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:33:45,441 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 01:33:45" (1/1) ... [2024-06-28 01:33:45,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:33:45,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:33:45,479 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 01:33:45,519 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 01:33:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:33:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:33:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:33:45,533 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:33:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:33:45,533 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:33:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:33:45,533 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:33:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 01:33:45,534 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 01:33:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:33:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:33:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:33:45,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:33:45,537 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 01:33:45,674 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:33:45,677 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:33:46,099 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:33:46,100 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:33:46,214 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:33:46,215 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:33:46,215 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:33:46 BoogieIcfgContainer [2024-06-28 01:33:46,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:33:46,217 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:33:46,217 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:33:46,219 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:33:46,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:33:44" (1/4) ... [2024-06-28 01:33:46,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528f078b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:33:46, skipping insertion in model container [2024-06-28 01:33:46,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:33:44" (2/4) ... [2024-06-28 01:33:46,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528f078b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:33:46, skipping insertion in model container [2024-06-28 01:33:46,220 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 01:33:45" (3/4) ... [2024-06-28 01:33:46,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528f078b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:33:46, skipping insertion in model container [2024-06-28 01:33:46,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:33:46" (4/4) ... [2024-06-28 01:33:46,221 INFO L112 eAbstractionObserver]: Analyzing ICFG mix036.oepc.i [2024-06-28 01:33:46,235 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:33:46,236 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-28 01:33:46,236 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:33:46,272 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:33:46,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 134 flow [2024-06-28 01:33:46,319 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-06-28 01:33:46,319 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:33:46,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2024-06-28 01:33:46,322 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 59 transitions, 134 flow [2024-06-28 01:33:46,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 55 transitions, 122 flow [2024-06-28 01:33:46,332 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:33:46,337 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;@7355d9f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:33:46,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-28 01:33:46,340 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:33:46,340 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:33:46,341 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:33:46,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:46,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:33:46,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:33:46,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:46,384 INFO L85 PathProgramCache]: Analyzing trace with hash 386075766, now seen corresponding path program 1 times [2024-06-28 01:33:46,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:46,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196374715] [2024-06-28 01:33:46,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:46,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:47,607 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 01:33:47,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:47,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196374715] [2024-06-28 01:33:47,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196374715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:47,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:47,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:33:47,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842557229] [2024-06-28 01:33:47,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:47,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:33:47,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:47,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:33:47,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:33:47,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-06-28 01:33:47,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 122 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 01:33:47,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:47,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-06-28 01:33:47,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:51,052 INFO L124 PetriNetUnfolderBase]: 24798/36364 cut-off events. [2024-06-28 01:33:51,052 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-28 01:33:51,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69633 conditions, 36364 events. 24798/36364 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 252824 event pairs, 20224 based on Foata normal form. 901/34639 useless extension candidates. Maximal degree in co-relation 69620. Up to 32874 conditions per place. [2024-06-28 01:33:51,296 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 52 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-06-28 01:33:51,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 283 flow [2024-06-28 01:33:51,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:33:51,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:33:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-06-28 01:33:51,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6836158192090396 [2024-06-28 01:33:51,306 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 122 flow. Second operand 3 states and 121 transitions. [2024-06-28 01:33:51,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 283 flow [2024-06-28 01:33:51,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 276 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:51,311 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 162 flow [2024-06-28 01:33:51,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-06-28 01:33:51,315 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-06-28 01:33:51,315 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 162 flow [2024-06-28 01:33:51,316 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 01:33:51,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:51,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:33:51,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:33:51,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:33:51,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:51,317 INFO L85 PathProgramCache]: Analyzing trace with hash 386076420, now seen corresponding path program 1 times [2024-06-28 01:33:51,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:51,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962431921] [2024-06-28 01:33:51,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:51,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:51,370 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 01:33:51,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:51,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962431921] [2024-06-28 01:33:51,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962431921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:51,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:51,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:33:51,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10629578] [2024-06-28 01:33:51,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:51,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:33:51,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:51,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:33:51,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:33:51,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 59 [2024-06-28 01:33:51,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 01:33:51,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:51,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 59 [2024-06-28 01:33:51,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:52,310 INFO L124 PetriNetUnfolderBase]: 5221/8977 cut-off events. [2024-06-28 01:33:52,310 INFO L125 PetriNetUnfolderBase]: For 688/688 co-relation queries the response was YES. [2024-06-28 01:33:52,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17277 conditions, 8977 events. 5221/8977 cut-off events. For 688/688 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 69963 event pairs, 3410 based on Foata normal form. 0/8254 useless extension candidates. Maximal degree in co-relation 17265. Up to 6080 conditions per place. [2024-06-28 01:33:52,375 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 45 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-06-28 01:33:52,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 297 flow [2024-06-28 01:33:52,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:33:52,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:33:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-06-28 01:33:52,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7966101694915254 [2024-06-28 01:33:52,377 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 162 flow. Second operand 3 states and 141 transitions. [2024-06-28 01:33:52,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 297 flow [2024-06-28 01:33:52,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:33:52,381 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 154 flow [2024-06-28 01:33:52,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-06-28 01:33:52,382 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-06-28 01:33:52,382 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 154 flow [2024-06-28 01:33:52,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 01:33:52,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:52,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:52,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:33:52,383 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:33:52,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:52,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1651668340, now seen corresponding path program 1 times [2024-06-28 01:33:52,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:52,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421102732] [2024-06-28 01:33:52,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:52,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:52,972 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 01:33:52,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:52,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421102732] [2024-06-28 01:33:52,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421102732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:52,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:52,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:33:52,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38038174] [2024-06-28 01:33:52,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:52,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:33:52,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:52,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:33:52,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:33:53,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-06-28 01:33:53,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:53,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:53,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-06-28 01:33:53,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:55,323 INFO L124 PetriNetUnfolderBase]: 20443/30075 cut-off events. [2024-06-28 01:33:55,324 INFO L125 PetriNetUnfolderBase]: For 7309/7309 co-relation queries the response was YES. [2024-06-28 01:33:55,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64831 conditions, 30075 events. 20443/30075 cut-off events. For 7309/7309 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 204006 event pairs, 14259 based on Foata normal form. 4/29029 useless extension candidates. Maximal degree in co-relation 64818. Up to 27146 conditions per place. [2024-06-28 01:33:55,484 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 64 selfloop transitions, 10 changer transitions 2/91 dead transitions. [2024-06-28 01:33:55,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 91 transitions, 402 flow [2024-06-28 01:33:55,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:33:55,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:33:55,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-06-28 01:33:55,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6440677966101694 [2024-06-28 01:33:55,486 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 154 flow. Second operand 4 states and 152 transitions. [2024-06-28 01:33:55,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 91 transitions, 402 flow [2024-06-28 01:33:55,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:33:55,491 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 235 flow [2024-06-28 01:33:55,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2024-06-28 01:33:55,492 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2024-06-28 01:33:55,492 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 235 flow [2024-06-28 01:33:55,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:55,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:55,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:55,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:33:55,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:33:55,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:55,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1884577165, now seen corresponding path program 1 times [2024-06-28 01:33:55,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:55,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996468384] [2024-06-28 01:33:55,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:55,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:56,884 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 01:33:56,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:56,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996468384] [2024-06-28 01:33:56,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996468384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:56,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:56,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:33:56,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854496041] [2024-06-28 01:33:56,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:56,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:33:56,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:56,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:33:56,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:33:57,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-28 01:33:57,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 235 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 01:33:57,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:57,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-28 01:33:57,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:59,319 INFO L124 PetriNetUnfolderBase]: 21331/29677 cut-off events. [2024-06-28 01:33:59,319 INFO L125 PetriNetUnfolderBase]: For 14358/14358 co-relation queries the response was YES. [2024-06-28 01:33:59,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71706 conditions, 29677 events. 21331/29677 cut-off events. For 14358/14358 co-relation queries the response was YES. Maximal size of possible extension queue 1088. Compared 184678 event pairs, 11461 based on Foata normal form. 4/29294 useless extension candidates. Maximal degree in co-relation 71691. Up to 28263 conditions per place. [2024-06-28 01:33:59,502 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 89 selfloop transitions, 28 changer transitions 0/131 dead transitions. [2024-06-28 01:33:59,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 131 transitions, 684 flow [2024-06-28 01:33:59,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:59,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 218 transitions. [2024-06-28 01:33:59,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.615819209039548 [2024-06-28 01:33:59,504 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 235 flow. Second operand 6 states and 218 transitions. [2024-06-28 01:33:59,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 131 transitions, 684 flow [2024-06-28 01:33:59,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 131 transitions, 660 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 01:33:59,512 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 394 flow [2024-06-28 01:33:59,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2024-06-28 01:33:59,513 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 8 predicate places. [2024-06-28 01:33:59,513 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 394 flow [2024-06-28 01:33:59,513 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 01:33:59,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:59,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:59,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:33:59,514 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:33:59,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:59,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1707651578, now seen corresponding path program 1 times [2024-06-28 01:33:59,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:59,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993092564] [2024-06-28 01:33:59,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:59,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:01,026 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 01:34:01,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:01,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993092564] [2024-06-28 01:34:01,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993092564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:01,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:01,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:34:01,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358866901] [2024-06-28 01:34:01,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:01,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:34:01,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:01,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:34:01,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:34:01,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-28 01:34:01,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 394 flow. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 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 01:34:01,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:01,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-28 01:34:01,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:03,913 INFO L124 PetriNetUnfolderBase]: 21334/31792 cut-off events. [2024-06-28 01:34:03,914 INFO L125 PetriNetUnfolderBase]: For 31179/31179 co-relation queries the response was YES. [2024-06-28 01:34:04,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82251 conditions, 31792 events. 21334/31792 cut-off events. For 31179/31179 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 220905 event pairs, 10661 based on Foata normal form. 8/30693 useless extension candidates. Maximal degree in co-relation 82232. Up to 28220 conditions per place. [2024-06-28 01:34:04,126 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 113 selfloop transitions, 21 changer transitions 0/148 dead transitions. [2024-06-28 01:34:04,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 148 transitions, 874 flow [2024-06-28 01:34:04,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:34:04,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:34:04,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-06-28 01:34:04,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6004842615012107 [2024-06-28 01:34:04,128 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 394 flow. Second operand 7 states and 248 transitions. [2024-06-28 01:34:04,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 148 transitions, 874 flow [2024-06-28 01:34:04,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 148 transitions, 829 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-28 01:34:04,139 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 481 flow [2024-06-28 01:34:04,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=481, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-06-28 01:34:04,140 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2024-06-28 01:34:04,140 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 481 flow [2024-06-28 01:34:04,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 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 01:34:04,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:04,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:04,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:34:04,141 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:34:04,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:04,142 INFO L85 PathProgramCache]: Analyzing trace with hash 815631311, now seen corresponding path program 1 times [2024-06-28 01:34:04,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:04,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589589951] [2024-06-28 01:34:04,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:04,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:04,996 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 01:34:04,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:04,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589589951] [2024-06-28 01:34:04,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589589951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:04,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:04,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:34:04,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880843149] [2024-06-28 01:34:04,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:04,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:34:04,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:04,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:34:04,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:34:05,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-28 01:34:05,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 481 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 01:34:05,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:05,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-28 01:34:05,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:08,777 INFO L124 PetriNetUnfolderBase]: 24771/36632 cut-off events. [2024-06-28 01:34:08,777 INFO L125 PetriNetUnfolderBase]: For 52826/52826 co-relation queries the response was YES. [2024-06-28 01:34:08,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99682 conditions, 36632 events. 24771/36632 cut-off events. For 52826/52826 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 255565 event pairs, 13370 based on Foata normal form. 6/35645 useless extension candidates. Maximal degree in co-relation 99658. Up to 32785 conditions per place. [2024-06-28 01:34:09,199 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 90 selfloop transitions, 14 changer transitions 0/116 dead transitions. [2024-06-28 01:34:09,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 116 transitions, 777 flow [2024-06-28 01:34:09,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:34:09,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:34:09,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-06-28 01:34:09,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288135593220339 [2024-06-28 01:34:09,201 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 481 flow. Second operand 5 states and 156 transitions. [2024-06-28 01:34:09,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 116 transitions, 777 flow [2024-06-28 01:34:09,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 116 transitions, 728 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:34:09,218 INFO L231 Difference]: Finished difference. Result has 84 places, 91 transitions, 506 flow [2024-06-28 01:34:09,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=506, PETRI_PLACES=84, PETRI_TRANSITIONS=91} [2024-06-28 01:34:09,221 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 17 predicate places. [2024-06-28 01:34:09,221 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 91 transitions, 506 flow [2024-06-28 01:34:09,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 01:34:09,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:09,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:09,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:34:09,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:34:09,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:09,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1521506169, now seen corresponding path program 1 times [2024-06-28 01:34:09,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:09,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272094732] [2024-06-28 01:34:09,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:09,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:10,169 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 01:34:10,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:10,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272094732] [2024-06-28 01:34:10,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272094732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:10,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:10,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:34:10,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69008598] [2024-06-28 01:34:10,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:10,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:34:10,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:10,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:34:10,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:34:10,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-28 01:34:10,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 91 transitions, 506 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 01:34:10,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:10,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-28 01:34:10,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:13,932 INFO L124 PetriNetUnfolderBase]: 24901/36685 cut-off events. [2024-06-28 01:34:13,932 INFO L125 PetriNetUnfolderBase]: For 70847/70847 co-relation queries the response was YES. [2024-06-28 01:34:14,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106717 conditions, 36685 events. 24901/36685 cut-off events. For 70847/70847 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 251939 event pairs, 11908 based on Foata normal form. 6/35545 useless extension candidates. Maximal degree in co-relation 106691. Up to 32859 conditions per place. [2024-06-28 01:34:14,158 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 111 selfloop transitions, 23 changer transitions 0/146 dead transitions. [2024-06-28 01:34:14,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 146 transitions, 1011 flow [2024-06-28 01:34:14,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:34:14,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:34:14,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-06-28 01:34:14,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508474576271186 [2024-06-28 01:34:14,160 INFO L175 Difference]: Start difference. First operand has 84 places, 91 transitions, 506 flow. Second operand 6 states and 195 transitions. [2024-06-28 01:34:14,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 146 transitions, 1011 flow [2024-06-28 01:34:14,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 146 transitions, 950 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:34:14,175 INFO L231 Difference]: Finished difference. Result has 88 places, 104 transitions, 633 flow [2024-06-28 01:34:14,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=633, PETRI_PLACES=88, PETRI_TRANSITIONS=104} [2024-06-28 01:34:14,175 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2024-06-28 01:34:14,175 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 104 transitions, 633 flow [2024-06-28 01:34:14,176 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 01:34:14,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:14,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:14,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:34:14,176 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:34:14,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:14,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2136744997, now seen corresponding path program 2 times [2024-06-28 01:34:14,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:14,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190969570] [2024-06-28 01:34:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:14,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:14,953 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 01:34:14,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:14,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190969570] [2024-06-28 01:34:14,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190969570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:14,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:14,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:34:14,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372644583] [2024-06-28 01:34:14,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:14,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:34:14,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:14,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:34:14,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:34:15,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-28 01:34:15,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 104 transitions, 633 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 01:34:15,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:15,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-28 01:34:15,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:18,937 INFO L124 PetriNetUnfolderBase]: 24883/36789 cut-off events. [2024-06-28 01:34:18,938 INFO L125 PetriNetUnfolderBase]: For 99428/99428 co-relation queries the response was YES. [2024-06-28 01:34:19,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116149 conditions, 36789 events. 24883/36789 cut-off events. For 99428/99428 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 256264 event pairs, 13034 based on Foata normal form. 6/35799 useless extension candidates. Maximal degree in co-relation 116121. Up to 32917 conditions per place. [2024-06-28 01:34:19,199 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 109 selfloop transitions, 16 changer transitions 0/137 dead transitions. [2024-06-28 01:34:19,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 137 transitions, 969 flow [2024-06-28 01:34:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:34:19,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:34:19,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-28 01:34:19,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225988700564972 [2024-06-28 01:34:19,204 INFO L175 Difference]: Start difference. First operand has 88 places, 104 transitions, 633 flow. Second operand 6 states and 185 transitions. [2024-06-28 01:34:19,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 137 transitions, 969 flow [2024-06-28 01:34:19,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 137 transitions, 929 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-28 01:34:19,254 INFO L231 Difference]: Finished difference. Result has 93 places, 104 transitions, 636 flow [2024-06-28 01:34:19,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=636, PETRI_PLACES=93, PETRI_TRANSITIONS=104} [2024-06-28 01:34:19,254 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 26 predicate places. [2024-06-28 01:34:19,254 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 104 transitions, 636 flow [2024-06-28 01:34:19,255 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 01:34:19,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:19,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:19,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:34:19,255 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:34:19,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:19,256 INFO L85 PathProgramCache]: Analyzing trace with hash -78068130, now seen corresponding path program 1 times [2024-06-28 01:34:19,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:19,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337788417] [2024-06-28 01:34:19,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:19,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:20,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:20,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337788417] [2024-06-28 01:34:20,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337788417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:20,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:20,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:34:20,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703088803] [2024-06-28 01:34:20,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:20,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:34:20,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:20,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:34:20,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:34:20,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-28 01:34:20,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 104 transitions, 636 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 01:34:20,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:20,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-28 01:34:20,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand