./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix004.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix004.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/mix004.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix004.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:52:20,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:52:20,552 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:52:20,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:52:20,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:52:20,578 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:52:20,579 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:52:20,580 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:52:20,580 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:52:20,583 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:52:20,583 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:52:20,583 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:52:20,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:52:20,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:52:20,585 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:52:20,585 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:52:20,585 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:52:20,586 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:52:20,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:52:20,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:52:20,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:52:20,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:52:20,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:52:20,587 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:52:20,587 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:52:20,587 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:52:20,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:52:20,601 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:52:20,602 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:52:20,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:52:20,603 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:52:20,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:52:20,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:52:20,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:52:20,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:52:20,603 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:52:20,604 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:52:20,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:52:20,604 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:52:20,604 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:52:20,604 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:52:20,605 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:52:20,605 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:52:20,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:52:20,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:52:20,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:52:20,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:52:20,855 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:52:20,855 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:52:20,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix004.oepc.i [2024-06-28 02:52:21,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:52:22,021 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:52:22,022 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix004.oepc.i [2024-06-28 02:52:22,034 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c73877b90/7a3e335dc08742c78b000b469f7cad6f/FLAGa61909059 [2024-06-28 02:52:22,043 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c73877b90/7a3e335dc08742c78b000b469f7cad6f [2024-06-28 02:52:22,045 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:52:22,045 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:52:22,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix004.oepc.yml/witness.yml [2024-06-28 02:52:22,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:52:22,221 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:52:22,222 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:52:22,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:52:22,226 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:52:22,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:52:22" (1/2) ... [2024-06-28 02:52:22,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2265c229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:52:22, skipping insertion in model container [2024-06-28 02:52:22,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:52:22" (1/2) ... [2024-06-28 02:52:22,228 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@347251fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:52:22, skipping insertion in model container [2024-06-28 02:52:22,229 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:52:22" (2/2) ... [2024-06-28 02:52:22,229 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2265c229 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:52:22, skipping insertion in model container [2024-06-28 02:52:22,229 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:52:22" (2/2) ... [2024-06-28 02:52:22,230 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:52:22,317 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:52:22,318 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ((((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$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_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-28 02:52:22,319 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] ((((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-28 02:52:22,319 INFO L97 edCorrectnessWitness]: Location invariant before [L880-L880] ((((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$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_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-28 02:52:22,319 INFO L97 edCorrectnessWitness]: Location invariant before [L881-L881] ((((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-28 02:52:22,319 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:52:22,320 INFO L106 edCorrectnessWitness]: ghost_update [L874-L874] multithreaded = 1; [2024-06-28 02:52:22,355 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:52:22,599 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:52:22,612 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:52:22,826 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:52:22,874 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:52:22,874 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:52:22 WrapperNode [2024-06-28 02:52:22,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:52:22,875 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:52:22,875 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:52:22,875 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:52:22,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:52:22" (1/1) ... [2024-06-28 02:52:22,912 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:52:22" (1/1) ... [2024-06-28 02:52:22,943 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 141 [2024-06-28 02:52:22,943 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:52:22,944 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:52:22,944 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:52:22,944 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:52:22,954 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:52:22" (1/1) ... [2024-06-28 02:52:22,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:52:22" (1/1) ... [2024-06-28 02:52:22,958 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:52:22" (1/1) ... [2024-06-28 02:52:22,983 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 02:52:22,985 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:52:22" (1/1) ... [2024-06-28 02:52:22,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:52:22" (1/1) ... [2024-06-28 02:52:22,996 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:52:22" (1/1) ... [2024-06-28 02:52:22,998 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:52:22" (1/1) ... [2024-06-28 02:52:23,000 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:52:22" (1/1) ... [2024-06-28 02:52:23,001 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:52:22" (1/1) ... [2024-06-28 02:52:23,004 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:52:23,005 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:52:23,005 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:52:23,005 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:52:23,005 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:52:22" (1/1) ... [2024-06-28 02:52:23,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:52:23,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:52:23,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:52:23,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:52:23,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:52:23,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:52:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:52:23,062 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:52:23,063 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:52:23,063 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:52:23,063 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:52:23,063 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:52:23,063 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 02:52:23,063 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 02:52:23,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:52:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:52:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:52:23,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:52:23,065 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:52:23,204 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:52:23,206 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:52:23,553 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:52:23,553 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:52:23,729 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:52:23,729 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:52:23,730 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:52:23 BoogieIcfgContainer [2024-06-28 02:52:23,730 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:52:23,732 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:52:23,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:52:23,735 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:52:23,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:52:22" (1/4) ... [2024-06-28 02:52:23,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3031b733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:52:23, skipping insertion in model container [2024-06-28 02:52:23,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:52:22" (2/4) ... [2024-06-28 02:52:23,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3031b733 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:52:23, skipping insertion in model container [2024-06-28 02:52:23,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:52:22" (3/4) ... [2024-06-28 02:52:23,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3031b733 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:52:23, skipping insertion in model container [2024-06-28 02:52:23,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:52:23" (4/4) ... [2024-06-28 02:52:23,737 INFO L112 eAbstractionObserver]: Analyzing ICFG mix004.oepc.i [2024-06-28 02:52:23,750 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:52:23,750 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 02:52:23,750 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:52:23,802 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:52:23,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-28 02:52:23,856 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-28 02:52:23,857 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:52:23,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:52:23,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-28 02:52:23,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-28 02:52:23,874 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:52:23,881 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;@f740c83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:52:23,881 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 02:52:23,884 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:52:23,884 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:52:23,885 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:52:23,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:23,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:52:23,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:52:23,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:23,889 INFO L85 PathProgramCache]: Analyzing trace with hash 406078723, now seen corresponding path program 1 times [2024-06-28 02:52:23,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:23,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917854102] [2024-06-28 02:52:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:23,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:24,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:24,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917854102] [2024-06-28 02:52:24,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917854102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:24,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:24,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:52:24,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517713652] [2024-06-28 02:52:24,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:24,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:52:24,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:24,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:52:24,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:52:24,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-06-28 02:52:24,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:24,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:24,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-06-28 02:52:24,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:26,091 INFO L124 PetriNetUnfolderBase]: 7892/11157 cut-off events. [2024-06-28 02:52:26,092 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-06-28 02:52:26,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22234 conditions, 11157 events. 7892/11157 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 62667 event pairs, 6010 based on Foata normal form. 1/10882 useless extension candidates. Maximal degree in co-relation 22221. Up to 10748 conditions per place. [2024-06-28 02:52:26,150 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 42 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-28 02:52:26,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 229 flow [2024-06-28 02:52:26,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:52:26,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:52:26,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-06-28 02:52:26,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2024-06-28 02:52:26,162 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 102 transitions. [2024-06-28 02:52:26,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 229 flow [2024-06-28 02:52:26,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 02:52:26,170 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-28 02:52:26,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-28 02:52:26,174 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-28 02:52:26,174 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-28 02:52:26,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:26,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:26,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:26,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:52:26,176 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:52:26,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:26,176 INFO L85 PathProgramCache]: Analyzing trace with hash -599867518, now seen corresponding path program 1 times [2024-06-28 02:52:26,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:26,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81841903] [2024-06-28 02:52:26,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:26,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:26,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:26,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:26,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81841903] [2024-06-28 02:52:26,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81841903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:26,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:26,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:52:26,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509044259] [2024-06-28 02:52:26,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:26,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:52:26,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:26,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:52:26,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:52:26,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-06-28 02:52:26,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:26,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:26,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-06-28 02:52:26,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:28,044 INFO L124 PetriNetUnfolderBase]: 7882/11154 cut-off events. [2024-06-28 02:52:28,044 INFO L125 PetriNetUnfolderBase]: For 2224/2224 co-relation queries the response was YES. [2024-06-28 02:52:28,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25192 conditions, 11154 events. 7882/11154 cut-off events. For 2224/2224 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 62490 event pairs, 5323 based on Foata normal form. 4/11042 useless extension candidates. Maximal degree in co-relation 25180. Up to 10713 conditions per place. [2024-06-28 02:52:28,095 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 52 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-28 02:52:28,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 321 flow [2024-06-28 02:52:28,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:52:28,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:52:28,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-06-28 02:52:28,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6273584905660378 [2024-06-28 02:52:28,100 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 133 transitions. [2024-06-28 02:52:28,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 321 flow [2024-06-28 02:52:28,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:52:28,109 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-28 02:52:28,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-28 02:52:28,110 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-28 02:52:28,110 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-28 02:52:28,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:28,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:28,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:28,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:52:28,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:52:28,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:28,120 INFO L85 PathProgramCache]: Analyzing trace with hash -947022815, now seen corresponding path program 1 times [2024-06-28 02:52:28,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:28,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49089477] [2024-06-28 02:52:28,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:28,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:29,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:29,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49089477] [2024-06-28 02:52:29,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49089477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:29,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:29,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:52:29,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154275449] [2024-06-28 02:52:29,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:29,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:52:29,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:29,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:52:29,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:52:29,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-28 02:52:29,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:29,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:29,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-28 02:52:29,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:30,680 INFO L124 PetriNetUnfolderBase]: 9557/13469 cut-off events. [2024-06-28 02:52:30,680 INFO L125 PetriNetUnfolderBase]: For 7339/7339 co-relation queries the response was YES. [2024-06-28 02:52:30,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33708 conditions, 13469 events. 9557/13469 cut-off events. For 7339/7339 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 76055 event pairs, 5407 based on Foata normal form. 4/13330 useless extension candidates. Maximal degree in co-relation 33694. Up to 12912 conditions per place. [2024-06-28 02:52:30,745 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 73 selfloop transitions, 17 changer transitions 0/99 dead transitions. [2024-06-28 02:52:30,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 99 transitions, 508 flow [2024-06-28 02:52:30,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:52:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:52:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-06-28 02:52:30,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5974842767295597 [2024-06-28 02:52:30,747 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 6 states and 190 transitions. [2024-06-28 02:52:30,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 99 transitions, 508 flow [2024-06-28 02:52:30,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 99 transitions, 480 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 02:52:30,750 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 258 flow [2024-06-28 02:52:30,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-06-28 02:52:30,751 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-28 02:52:30,751 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 258 flow [2024-06-28 02:52:30,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:30,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:30,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:30,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:52:30,752 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:52:30,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:30,752 INFO L85 PathProgramCache]: Analyzing trace with hash -150025339, now seen corresponding path program 1 times [2024-06-28 02:52:30,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:30,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978671826] [2024-06-28 02:52:30,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:30,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:31,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:31,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978671826] [2024-06-28 02:52:31,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978671826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:31,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:31,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:52:31,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010481445] [2024-06-28 02:52:31,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:31,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:52:31,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:31,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:52:31,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:52:32,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-28 02:52:32,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 258 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:32,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:32,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-28 02:52:32,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:33,362 INFO L124 PetriNetUnfolderBase]: 9541/13451 cut-off events. [2024-06-28 02:52:33,362 INFO L125 PetriNetUnfolderBase]: For 14753/14753 co-relation queries the response was YES. [2024-06-28 02:52:33,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37576 conditions, 13451 events. 9541/13451 cut-off events. For 14753/14753 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 76128 event pairs, 4602 based on Foata normal form. 8/13312 useless extension candidates. Maximal degree in co-relation 37560. Up to 12846 conditions per place. [2024-06-28 02:52:33,439 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 80 selfloop transitions, 20 changer transitions 0/109 dead transitions. [2024-06-28 02:52:33,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 109 transitions, 598 flow [2024-06-28 02:52:33,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:52:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:52:33,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-06-28 02:52:33,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5822102425876011 [2024-06-28 02:52:33,443 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 258 flow. Second operand 7 states and 216 transitions. [2024-06-28 02:52:33,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 109 transitions, 598 flow [2024-06-28 02:52:33,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 109 transitions, 559 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 02:52:33,450 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 291 flow [2024-06-28 02:52:33,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=291, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2024-06-28 02:52:33,452 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2024-06-28 02:52:33,452 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 291 flow [2024-06-28 02:52:33,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:33,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:33,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:33,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:52:33,453 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:52:33,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:33,453 INFO L85 PathProgramCache]: Analyzing trace with hash -953008957, now seen corresponding path program 1 times [2024-06-28 02:52:33,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:33,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869227776] [2024-06-28 02:52:33,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:33,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:34,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:34,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:34,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869227776] [2024-06-28 02:52:34,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869227776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:34,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:34,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:52:34,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608286103] [2024-06-28 02:52:34,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:34,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:52:34,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:34,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:52:34,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:52:34,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:52:34,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 291 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:34,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:34,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:52:34,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:35,532 INFO L124 PetriNetUnfolderBase]: 9523/13523 cut-off events. [2024-06-28 02:52:35,533 INFO L125 PetriNetUnfolderBase]: For 23082/23082 co-relation queries the response was YES. [2024-06-28 02:52:35,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40354 conditions, 13523 events. 9523/13523 cut-off events. For 23082/23082 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 77246 event pairs, 4907 based on Foata normal form. 6/13426 useless extension candidates. Maximal degree in co-relation 40336. Up to 12897 conditions per place. [2024-06-28 02:52:35,593 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 65 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2024-06-28 02:52:35,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 83 transitions, 513 flow [2024-06-28 02:52:35,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:52:35,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:52:35,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-28 02:52:35,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018867924528302 [2024-06-28 02:52:35,595 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 291 flow. Second operand 5 states and 133 transitions. [2024-06-28 02:52:35,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 83 transitions, 513 flow [2024-06-28 02:52:35,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 83 transitions, 459 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 02:52:35,600 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 302 flow [2024-06-28 02:52:35,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=302, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2024-06-28 02:52:35,601 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2024-06-28 02:52:35,601 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 302 flow [2024-06-28 02:52:35,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:35,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:35,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:35,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:52:35,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:52:35,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:35,602 INFO L85 PathProgramCache]: Analyzing trace with hash 844996688, now seen corresponding path program 1 times [2024-06-28 02:52:35,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:35,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905947680] [2024-06-28 02:52:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:35,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:36,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:36,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905947680] [2024-06-28 02:52:36,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905947680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:36,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:36,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:52:36,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530788140] [2024-06-28 02:52:36,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:36,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:52:36,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:36,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:52:36,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:52:36,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:52:36,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 302 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:36,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:36,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:52:36,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:37,733 INFO L124 PetriNetUnfolderBase]: 9598/13608 cut-off events. [2024-06-28 02:52:37,733 INFO L125 PetriNetUnfolderBase]: For 32694/32694 co-relation queries the response was YES. [2024-06-28 02:52:37,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43921 conditions, 13608 events. 9598/13608 cut-off events. For 32694/32694 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 77595 event pairs, 4663 based on Foata normal form. 6/13512 useless extension candidates. Maximal degree in co-relation 43901. Up to 12924 conditions per place. [2024-06-28 02:52:37,807 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 80 selfloop transitions, 21 changer transitions 0/109 dead transitions. [2024-06-28 02:52:37,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 109 transitions, 713 flow [2024-06-28 02:52:37,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:52:37,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:52:37,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-06-28 02:52:37,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251572327044025 [2024-06-28 02:52:37,809 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 302 flow. Second operand 6 states and 167 transitions. [2024-06-28 02:52:37,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 109 transitions, 713 flow [2024-06-28 02:52:37,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 109 transitions, 659 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 02:52:37,816 INFO L231 Difference]: Finished difference. Result has 70 places, 77 transitions, 424 flow [2024-06-28 02:52:37,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=424, PETRI_PLACES=70, PETRI_TRANSITIONS=77} [2024-06-28 02:52:37,817 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-06-28 02:52:37,817 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 77 transitions, 424 flow [2024-06-28 02:52:37,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:37,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:37,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:37,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:52:37,818 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:52:37,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:37,818 INFO L85 PathProgramCache]: Analyzing trace with hash -469268924, now seen corresponding path program 2 times [2024-06-28 02:52:37,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:37,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107398405] [2024-06-28 02:52:37,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:37,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:38,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:38,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:38,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107398405] [2024-06-28 02:52:38,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107398405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:38,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:38,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:52:38,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263344822] [2024-06-28 02:52:38,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:38,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:52:38,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:38,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:52:38,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:52:38,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:52:38,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 77 transitions, 424 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:38,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:38,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:52:38,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:40,007 INFO L124 PetriNetUnfolderBase]: 9580/13589 cut-off events. [2024-06-28 02:52:40,007 INFO L125 PetriNetUnfolderBase]: For 45281/45281 co-relation queries the response was YES. [2024-06-28 02:52:40,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47892 conditions, 13589 events. 9580/13589 cut-off events. For 45281/45281 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 77449 event pairs, 4756 based on Foata normal form. 6/13494 useless extension candidates. Maximal degree in co-relation 47870. Up to 12960 conditions per place. [2024-06-28 02:52:40,099 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 80 selfloop transitions, 14 changer transitions 0/102 dead transitions. [2024-06-28 02:52:40,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 102 transitions, 678 flow [2024-06-28 02:52:40,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:52:40,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:52:40,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-28 02:52:40,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968553459119497 [2024-06-28 02:52:40,101 INFO L175 Difference]: Start difference. First operand has 70 places, 77 transitions, 424 flow. Second operand 6 states and 158 transitions. [2024-06-28 02:52:40,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 102 transitions, 678 flow [2024-06-28 02:52:40,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 102 transitions, 632 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-06-28 02:52:40,127 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 417 flow [2024-06-28 02:52:40,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=417, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2024-06-28 02:52:40,128 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2024-06-28 02:52:40,128 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 417 flow [2024-06-28 02:52:40,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:40,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:40,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:40,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:52:40,129 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:52:40,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:40,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1532544948, now seen corresponding path program 1 times [2024-06-28 02:52:40,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:40,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269866749] [2024-06-28 02:52:40,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:40,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:41,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:41,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:41,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269866749] [2024-06-28 02:52:41,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269866749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:41,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:41,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:52:41,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519834331] [2024-06-28 02:52:41,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:41,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:52:41,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:41,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:52:41,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:52:41,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:52:41,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 417 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:41,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:41,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:52:41,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:42,740 INFO L124 PetriNetUnfolderBase]: 9624/13605 cut-off events. [2024-06-28 02:52:42,740 INFO L125 PetriNetUnfolderBase]: For 51592/51592 co-relation queries the response was YES. [2024-06-28 02:52:42,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48575 conditions, 13605 events. 9624/13605 cut-off events. For 51592/51592 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 77257 event pairs, 4668 based on Foata normal form. 6/13507 useless extension candidates. Maximal degree in co-relation 48550. Up to 12993 conditions per place. [2024-06-28 02:52:42,813 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 93 selfloop transitions, 18 changer transitions 0/119 dead transitions. [2024-06-28 02:52:42,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 119 transitions, 777 flow [2024-06-28 02:52:42,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:52:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:52:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-28 02:52:42,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-06-28 02:52:42,814 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 417 flow. Second operand 7 states and 189 transitions. [2024-06-28 02:52:42,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 119 transitions, 777 flow [2024-06-28 02:52:42,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 119 transitions, 730 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 02:52:42,831 INFO L231 Difference]: Finished difference. Result has 76 places, 81 transitions, 463 flow [2024-06-28 02:52:42,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=463, PETRI_PLACES=76, PETRI_TRANSITIONS=81} [2024-06-28 02:52:42,832 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2024-06-28 02:52:42,832 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 81 transitions, 463 flow [2024-06-28 02:52:42,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:42,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:42,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:42,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:52:42,833 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:52:42,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:42,833 INFO L85 PathProgramCache]: Analyzing trace with hash 425094336, now seen corresponding path program 2 times [2024-06-28 02:52:42,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:42,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437329937] [2024-06-28 02:52:42,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:42,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:43,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:43,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:43,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437329937] [2024-06-28 02:52:43,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437329937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:43,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:43,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:52:43,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189616131] [2024-06-28 02:52:43,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:43,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:52:43,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:43,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:52:43,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:52:43,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:52:43,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 463 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:43,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:43,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:52:43,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:45,418 INFO L124 PetriNetUnfolderBase]: 9699/13714 cut-off events. [2024-06-28 02:52:45,418 INFO L125 PetriNetUnfolderBase]: For 66539/66539 co-relation queries the response was YES. [2024-06-28 02:52:45,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52421 conditions, 13714 events. 9699/13714 cut-off events. For 66539/66539 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 77718 event pairs, 4479 based on Foata normal form. 6/13611 useless extension candidates. Maximal degree in co-relation 52397. Up to 12935 conditions per place. [2024-06-28 02:52:45,521 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 86 selfloop transitions, 35 changer transitions 0/129 dead transitions. [2024-06-28 02:52:45,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 129 transitions, 951 flow [2024-06-28 02:52:45,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:52:45,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:52:45,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-28 02:52:45,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256064690026954 [2024-06-28 02:52:45,523 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 463 flow. Second operand 7 states and 195 transitions. [2024-06-28 02:52:45,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 129 transitions, 951 flow [2024-06-28 02:52:45,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 129 transitions, 890 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 02:52:45,550 INFO L231 Difference]: Finished difference. Result has 78 places, 89 transitions, 583 flow [2024-06-28 02:52:45,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=583, PETRI_PLACES=78, PETRI_TRANSITIONS=89} [2024-06-28 02:52:45,551 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2024-06-28 02:52:45,551 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 89 transitions, 583 flow [2024-06-28 02:52:45,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:45,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:45,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:45,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:52:45,552 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:52:45,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:45,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1650815482, now seen corresponding path program 3 times [2024-06-28 02:52:45,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:45,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671361587] [2024-06-28 02:52:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:45,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:46,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:46,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671361587] [2024-06-28 02:52:46,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671361587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:46,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:46,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:52:46,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823869552] [2024-06-28 02:52:46,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:46,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:52:46,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:46,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:52:46,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:52:46,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:52:46,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 89 transitions, 583 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:46,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:46,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:52:46,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:48,102 INFO L124 PetriNetUnfolderBase]: 9681/13646 cut-off events. [2024-06-28 02:52:48,102 INFO L125 PetriNetUnfolderBase]: For 88233/88233 co-relation queries the response was YES. [2024-06-28 02:52:48,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55567 conditions, 13646 events. 9681/13646 cut-off events. For 88233/88233 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 77839 event pairs, 5908 based on Foata normal form. 6/13468 useless extension candidates. Maximal degree in co-relation 55542. Up to 13060 conditions per place. [2024-06-28 02:52:48,178 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 95 selfloop transitions, 20 changer transitions 0/123 dead transitions. [2024-06-28 02:52:48,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 123 transitions, 910 flow [2024-06-28 02:52:48,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:52:48,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:52:48,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 02:52:48,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693396226415094 [2024-06-28 02:52:48,179 INFO L175 Difference]: Start difference. First operand has 78 places, 89 transitions, 583 flow. Second operand 8 states and 199 transitions. [2024-06-28 02:52:48,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 123 transitions, 910 flow [2024-06-28 02:52:48,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 123 transitions, 825 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-28 02:52:48,247 INFO L231 Difference]: Finished difference. Result has 84 places, 91 transitions, 565 flow [2024-06-28 02:52:48,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=565, PETRI_PLACES=84, PETRI_TRANSITIONS=91} [2024-06-28 02:52:48,248 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 28 predicate places. [2024-06-28 02:52:48,248 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 91 transitions, 565 flow [2024-06-28 02:52:48,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:48,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:48,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:48,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:52:48,248 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:52:48,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:48,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1355047194, now seen corresponding path program 1 times [2024-06-28 02:52:48,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:48,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764204129] [2024-06-28 02:52:48,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:48,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:49,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:49,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:49,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764204129] [2024-06-28 02:52:49,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764204129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:49,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:49,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:52:49,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203568948] [2024-06-28 02:52:49,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:49,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:52:49,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:49,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:52:49,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:52:49,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 02:52:49,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 91 transitions, 565 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:49,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:49,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 02:52:49,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:51,699 INFO L124 PetriNetUnfolderBase]: 11757/16435 cut-off events. [2024-06-28 02:52:51,699 INFO L125 PetriNetUnfolderBase]: For 114480/114480 co-relation queries the response was YES. [2024-06-28 02:52:51,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66679 conditions, 16435 events. 11757/16435 cut-off events. For 114480/114480 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 92845 event pairs, 7161 based on Foata normal form. 6/16232 useless extension candidates. Maximal degree in co-relation 66651. Up to 15837 conditions per place. [2024-06-28 02:52:51,801 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 101 selfloop transitions, 21 changer transitions 0/129 dead transitions. [2024-06-28 02:52:51,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 129 transitions, 964 flow [2024-06-28 02:52:51,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:52:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:52:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 02:52:51,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477088948787062 [2024-06-28 02:52:51,802 INFO L175 Difference]: Start difference. First operand has 84 places, 91 transitions, 565 flow. Second operand 7 states and 177 transitions. [2024-06-28 02:52:51,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 129 transitions, 964 flow [2024-06-28 02:52:51,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 129 transitions, 895 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:52:51,942 INFO L231 Difference]: Finished difference. Result has 86 places, 98 transitions, 636 flow [2024-06-28 02:52:51,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=636, PETRI_PLACES=86, PETRI_TRANSITIONS=98} [2024-06-28 02:52:51,942 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2024-06-28 02:52:51,942 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 98 transitions, 636 flow [2024-06-28 02:52:51,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:51,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:51,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:51,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:52:51,943 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:52:51,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:51,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1764938598, now seen corresponding path program 1 times [2024-06-28 02:52:51,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:51,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139099941] [2024-06-28 02:52:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:51,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:52,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:52,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139099941] [2024-06-28 02:52:52,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139099941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:52,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:52,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:52:52,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714306316] [2024-06-28 02:52:52,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:52,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:52:52,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:52,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:52:52,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:52:52,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 02:52:52,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 98 transitions, 636 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:52,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:52,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 02:52:52,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:54,472 INFO L124 PetriNetUnfolderBase]: 13366/18724 cut-off events. [2024-06-28 02:52:54,472 INFO L125 PetriNetUnfolderBase]: For 156273/156284 co-relation queries the response was YES. [2024-06-28 02:52:54,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80101 conditions, 18724 events. 13366/18724 cut-off events. For 156273/156284 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 107190 event pairs, 8815 based on Foata normal form. 13/18641 useless extension candidates. Maximal degree in co-relation 80071. Up to 18186 conditions per place. [2024-06-28 02:52:54,598 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 94 selfloop transitions, 11 changer transitions 0/115 dead transitions. [2024-06-28 02:52:54,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 115 transitions, 920 flow [2024-06-28 02:52:54,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:52:54,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:52:54,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-28 02:52:54,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4679245283018868 [2024-06-28 02:52:54,599 INFO L175 Difference]: Start difference. First operand has 86 places, 98 transitions, 636 flow. Second operand 5 states and 124 transitions. [2024-06-28 02:52:54,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 115 transitions, 920 flow [2024-06-28 02:52:54,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 115 transitions, 848 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 02:52:54,765 INFO L231 Difference]: Finished difference. Result has 87 places, 102 transitions, 643 flow [2024-06-28 02:52:54,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=643, PETRI_PLACES=87, PETRI_TRANSITIONS=102} [2024-06-28 02:52:54,766 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-06-28 02:52:54,766 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 102 transitions, 643 flow [2024-06-28 02:52:54,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:54,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:54,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:54,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:52:54,767 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:52:54,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:54,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1076348249, now seen corresponding path program 1 times [2024-06-28 02:52:54,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:54,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575979123] [2024-06-28 02:52:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:54,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:55,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:55,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:55,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575979123] [2024-06-28 02:52:55,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575979123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:55,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:55,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:52:55,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160526016] [2024-06-28 02:52:55,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:55,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:52:55,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:55,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:52:55,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:52:56,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:52:56,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 102 transitions, 643 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:56,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:56,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:52:56,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:58,503 INFO L124 PetriNetUnfolderBase]: 13444/18985 cut-off events. [2024-06-28 02:52:58,503 INFO L125 PetriNetUnfolderBase]: For 177797/177811 co-relation queries the response was YES. [2024-06-28 02:52:58,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85440 conditions, 18985 events. 13444/18985 cut-off events. For 177797/177811 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 110759 event pairs, 6016 based on Foata normal form. 12/18889 useless extension candidates. Maximal degree in co-relation 85409. Up to 17718 conditions per place. [2024-06-28 02:52:58,655 INFO L140 encePairwiseOnDemand]: 36/53 looper letters, 155 selfloop transitions, 64 changer transitions 0/229 dead transitions. [2024-06-28 02:52:58,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 229 transitions, 1737 flow [2024-06-28 02:52:58,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:52:58,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:52:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 355 transitions. [2024-06-28 02:52:58,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5152394775036284 [2024-06-28 02:52:58,657 INFO L175 Difference]: Start difference. First operand has 87 places, 102 transitions, 643 flow. Second operand 13 states and 355 transitions. [2024-06-28 02:52:58,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 229 transitions, 1737 flow [2024-06-28 02:52:58,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 229 transitions, 1688 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 02:52:58,756 INFO L231 Difference]: Finished difference. Result has 101 places, 146 transitions, 1121 flow [2024-06-28 02:52:58,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1121, PETRI_PLACES=101, PETRI_TRANSITIONS=146} [2024-06-28 02:52:58,757 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 45 predicate places. [2024-06-28 02:52:58,757 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 146 transitions, 1121 flow [2024-06-28 02:52:58,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:58,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:58,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:58,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:52:58,758 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:52:58,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:58,758 INFO L85 PathProgramCache]: Analyzing trace with hash 242600099, now seen corresponding path program 2 times [2024-06-28 02:52:58,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:58,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991585938] [2024-06-28 02:52:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:58,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:59,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:59,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991585938] [2024-06-28 02:52:59,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991585938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:59,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:59,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:52:59,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174587799] [2024-06-28 02:52:59,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:59,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:52:59,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:59,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:52:59,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:53:00,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:53:00,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 146 transitions, 1121 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:00,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:00,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:53:00,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:02,542 INFO L124 PetriNetUnfolderBase]: 14049/19762 cut-off events. [2024-06-28 02:53:02,542 INFO L125 PetriNetUnfolderBase]: For 230158/230220 co-relation queries the response was YES. [2024-06-28 02:53:02,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97366 conditions, 19762 events. 14049/19762 cut-off events. For 230158/230220 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 115196 event pairs, 6842 based on Foata normal form. 14/19504 useless extension candidates. Maximal degree in co-relation 97330. Up to 18520 conditions per place. [2024-06-28 02:53:02,727 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 178 selfloop transitions, 75 changer transitions 0/263 dead transitions. [2024-06-28 02:53:02,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 263 transitions, 2423 flow [2024-06-28 02:53:02,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:53:02,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:53:02,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-06-28 02:53:02,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037735849056604 [2024-06-28 02:53:02,729 INFO L175 Difference]: Start difference. First operand has 101 places, 146 transitions, 1121 flow. Second operand 10 states and 267 transitions. [2024-06-28 02:53:02,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 263 transitions, 2423 flow [2024-06-28 02:53:03,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 263 transitions, 2259 flow, removed 64 selfloop flow, removed 4 redundant places. [2024-06-28 02:53:03,026 INFO L231 Difference]: Finished difference. Result has 111 places, 202 transitions, 1828 flow [2024-06-28 02:53:03,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1828, PETRI_PLACES=111, PETRI_TRANSITIONS=202} [2024-06-28 02:53:03,026 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2024-06-28 02:53:03,026 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 202 transitions, 1828 flow [2024-06-28 02:53:03,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:03,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:03,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:03,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:53:03,027 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:03,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:03,027 INFO L85 PathProgramCache]: Analyzing trace with hash 409207491, now seen corresponding path program 3 times [2024-06-28 02:53:03,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:03,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672595828] [2024-06-28 02:53:03,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:03,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:04,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:04,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672595828] [2024-06-28 02:53:04,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672595828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:04,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:04,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:53:04,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032419015] [2024-06-28 02:53:04,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:04,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:53:04,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:04,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:53:04,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:53:04,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:53:04,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 202 transitions, 1828 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:04,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:04,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:53:04,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:06,977 INFO L124 PetriNetUnfolderBase]: 14349/20193 cut-off events. [2024-06-28 02:53:06,977 INFO L125 PetriNetUnfolderBase]: For 252488/252558 co-relation queries the response was YES. [2024-06-28 02:53:07,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101730 conditions, 20193 events. 14349/20193 cut-off events. For 252488/252558 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 117832 event pairs, 6612 based on Foata normal form. 18/19945 useless extension candidates. Maximal degree in co-relation 101688. Up to 18694 conditions per place. [2024-06-28 02:53:07,125 INFO L140 encePairwiseOnDemand]: 36/53 looper letters, 178 selfloop transitions, 111 changer transitions 0/299 dead transitions. [2024-06-28 02:53:07,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 299 transitions, 2951 flow [2024-06-28 02:53:07,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:53:07,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:53:07,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-06-28 02:53:07,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157232704402516 [2024-06-28 02:53:07,129 INFO L175 Difference]: Start difference. First operand has 111 places, 202 transitions, 1828 flow. Second operand 9 states and 246 transitions. [2024-06-28 02:53:07,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 299 transitions, 2951 flow [2024-06-28 02:53:07,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 299 transitions, 2793 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-28 02:53:07,350 INFO L231 Difference]: Finished difference. Result has 120 places, 244 transitions, 2342 flow [2024-06-28 02:53:07,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1670, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2342, PETRI_PLACES=120, PETRI_TRANSITIONS=244} [2024-06-28 02:53:07,351 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 64 predicate places. [2024-06-28 02:53:07,351 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 244 transitions, 2342 flow [2024-06-28 02:53:07,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:07,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:07,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:07,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:53:07,351 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:07,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:07,352 INFO L85 PathProgramCache]: Analyzing trace with hash -264342527, now seen corresponding path program 4 times [2024-06-28 02:53:07,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:07,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977089390] [2024-06-28 02:53:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:07,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:08,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:08,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977089390] [2024-06-28 02:53:08,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977089390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:08,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:08,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:53:08,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326574062] [2024-06-28 02:53:08,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:08,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:53:08,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:08,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:53:08,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:53:08,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:53:08,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 244 transitions, 2342 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:08,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:08,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:53:08,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:11,415 INFO L124 PetriNetUnfolderBase]: 14709/20662 cut-off events. [2024-06-28 02:53:11,415 INFO L125 PetriNetUnfolderBase]: For 303190/303228 co-relation queries the response was YES. [2024-06-28 02:53:11,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111612 conditions, 20662 events. 14709/20662 cut-off events. For 303190/303228 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 120351 event pairs, 7019 based on Foata normal form. 14/20337 useless extension candidates. Maximal degree in co-relation 111566. Up to 19031 conditions per place. [2024-06-28 02:53:11,599 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 185 selfloop transitions, 133 changer transitions 0/328 dead transitions. [2024-06-28 02:53:11,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 328 transitions, 3624 flow [2024-06-28 02:53:11,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:53:11,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:53:11,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2024-06-28 02:53:11,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519916142557652 [2024-06-28 02:53:11,601 INFO L175 Difference]: Start difference. First operand has 120 places, 244 transitions, 2342 flow. Second operand 9 states and 248 transitions. [2024-06-28 02:53:11,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 328 transitions, 3624 flow [2024-06-28 02:53:11,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 328 transitions, 3534 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-28 02:53:11,901 INFO L231 Difference]: Finished difference. Result has 127 places, 268 transitions, 2804 flow [2024-06-28 02:53:11,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2252, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2804, PETRI_PLACES=127, PETRI_TRANSITIONS=268} [2024-06-28 02:53:11,901 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 71 predicate places. [2024-06-28 02:53:11,902 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 268 transitions, 2804 flow [2024-06-28 02:53:11,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:11,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:11,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:11,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:53:11,902 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:11,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:11,903 INFO L85 PathProgramCache]: Analyzing trace with hash -264252317, now seen corresponding path program 5 times [2024-06-28 02:53:11,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:11,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766161544] [2024-06-28 02:53:11,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:11,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:13,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:13,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766161544] [2024-06-28 02:53:13,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766161544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:13,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:13,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:53:13,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204313053] [2024-06-28 02:53:13,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:13,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:53:13,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:13,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:53:13,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:53:13,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:53:13,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 268 transitions, 2804 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:13,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:13,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:53:13,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:16,537 INFO L124 PetriNetUnfolderBase]: 14631/20563 cut-off events. [2024-06-28 02:53:16,537 INFO L125 PetriNetUnfolderBase]: For 325973/326020 co-relation queries the response was YES. [2024-06-28 02:53:16,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113328 conditions, 20563 events. 14631/20563 cut-off events. For 325973/326020 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 119877 event pairs, 7078 based on Foata normal form. 14/20249 useless extension candidates. Maximal degree in co-relation 113280. Up to 19153 conditions per place. [2024-06-28 02:53:16,686 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 212 selfloop transitions, 93 changer transitions 0/315 dead transitions. [2024-06-28 02:53:16,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 315 transitions, 3662 flow [2024-06-28 02:53:16,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:53:16,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:53:16,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 02:53:16,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070754716981132 [2024-06-28 02:53:16,688 INFO L175 Difference]: Start difference. First operand has 127 places, 268 transitions, 2804 flow. Second operand 8 states and 215 transitions. [2024-06-28 02:53:16,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 315 transitions, 3662 flow [2024-06-28 02:53:17,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 315 transitions, 3322 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-06-28 02:53:17,065 INFO L231 Difference]: Finished difference. Result has 129 places, 268 transitions, 2690 flow [2024-06-28 02:53:17,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2464, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2690, PETRI_PLACES=129, PETRI_TRANSITIONS=268} [2024-06-28 02:53:17,066 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 73 predicate places. [2024-06-28 02:53:17,066 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 268 transitions, 2690 flow [2024-06-28 02:53:17,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:17,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:17,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:17,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:53:17,066 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:17,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:17,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1912300969, now seen corresponding path program 6 times [2024-06-28 02:53:17,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:17,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804281621] [2024-06-28 02:53:17,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:17,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:18,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:18,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:18,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804281621] [2024-06-28 02:53:18,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804281621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:18,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:18,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:53:18,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992019570] [2024-06-28 02:53:18,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:18,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:53:18,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:18,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:53:18,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:53:18,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:53:18,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 268 transitions, 2690 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:18,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:18,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:53:18,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:21,193 INFO L124 PetriNetUnfolderBase]: 14575/20531 cut-off events. [2024-06-28 02:53:21,193 INFO L125 PetriNetUnfolderBase]: For 339425/339448 co-relation queries the response was YES. [2024-06-28 02:53:21,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113748 conditions, 20531 events. 14575/20531 cut-off events. For 339425/339448 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 119852 event pairs, 6535 based on Foata normal form. 20/20337 useless extension candidates. Maximal degree in co-relation 113699. Up to 18814 conditions per place. [2024-06-28 02:53:21,376 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 186 selfloop transitions, 135 changer transitions 0/331 dead transitions. [2024-06-28 02:53:21,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 331 transitions, 3894 flow [2024-06-28 02:53:21,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:53:21,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:53:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-06-28 02:53:21,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235849056603774 [2024-06-28 02:53:21,378 INFO L175 Difference]: Start difference. First operand has 129 places, 268 transitions, 2690 flow. Second operand 8 states and 222 transitions. [2024-06-28 02:53:21,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 331 transitions, 3894 flow [2024-06-28 02:53:21,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 331 transitions, 3676 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:53:21,702 INFO L231 Difference]: Finished difference. Result has 131 places, 276 transitions, 2964 flow [2024-06-28 02:53:21,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2472, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2964, PETRI_PLACES=131, PETRI_TRANSITIONS=276} [2024-06-28 02:53:21,702 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 75 predicate places. [2024-06-28 02:53:21,702 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 276 transitions, 2964 flow [2024-06-28 02:53:21,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:21,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:21,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:21,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:53:21,703 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:21,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:21,703 INFO L85 PathProgramCache]: Analyzing trace with hash 613260037, now seen corresponding path program 1 times [2024-06-28 02:53:21,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:21,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922087324] [2024-06-28 02:53:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:21,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:23,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:23,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922087324] [2024-06-28 02:53:23,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922087324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:23,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:23,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:53:23,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444404881] [2024-06-28 02:53:23,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:23,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:53:23,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:23,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:53:23,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:53:23,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 02:53:23,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 276 transitions, 2964 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:23,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:23,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 02:53:23,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:26,007 INFO L124 PetriNetUnfolderBase]: 15603/21735 cut-off events. [2024-06-28 02:53:26,007 INFO L125 PetriNetUnfolderBase]: For 406966/406986 co-relation queries the response was YES. [2024-06-28 02:53:26,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125900 conditions, 21735 events. 15603/21735 cut-off events. For 406966/406986 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 123299 event pairs, 8371 based on Foata normal form. 3/21330 useless extension candidates. Maximal degree in co-relation 125849. Up to 20769 conditions per place. [2024-06-28 02:53:26,373 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 284 selfloop transitions, 31 changer transitions 0/323 dead transitions. [2024-06-28 02:53:26,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 323 transitions, 3968 flow [2024-06-28 02:53:26,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:53:26,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:53:26,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 02:53:26,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797843665768194 [2024-06-28 02:53:26,375 INFO L175 Difference]: Start difference. First operand has 131 places, 276 transitions, 2964 flow. Second operand 7 states and 178 transitions. [2024-06-28 02:53:26,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 323 transitions, 3968 flow [2024-06-28 02:53:26,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 323 transitions, 3821 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 02:53:26,748 INFO L231 Difference]: Finished difference. Result has 134 places, 289 transitions, 3103 flow [2024-06-28 02:53:26,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2817, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3103, PETRI_PLACES=134, PETRI_TRANSITIONS=289} [2024-06-28 02:53:26,748 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2024-06-28 02:53:26,748 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 289 transitions, 3103 flow [2024-06-28 02:53:26,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:26,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:26,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:26,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:53:26,749 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:26,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:26,750 INFO L85 PathProgramCache]: Analyzing trace with hash -424339241, now seen corresponding path program 7 times [2024-06-28 02:53:26,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:26,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836838405] [2024-06-28 02:53:26,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:26,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:27,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:27,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836838405] [2024-06-28 02:53:27,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836838405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:27,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:27,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:53:27,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948820012] [2024-06-28 02:53:27,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:27,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:53:27,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:27,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:53:27,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:53:28,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:53:28,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 289 transitions, 3103 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:28,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:28,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:53:28,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:31,147 INFO L124 PetriNetUnfolderBase]: 14775/20728 cut-off events. [2024-06-28 02:53:31,148 INFO L125 PetriNetUnfolderBase]: For 424633/424658 co-relation queries the response was YES. [2024-06-28 02:53:31,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123916 conditions, 20728 events. 14775/20728 cut-off events. For 424633/424658 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 120756 event pairs, 7298 based on Foata normal form. 17/20390 useless extension candidates. Maximal degree in co-relation 123863. Up to 19477 conditions per place. [2024-06-28 02:53:31,360 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 282 selfloop transitions, 47 changer transitions 0/339 dead transitions. [2024-06-28 02:53:31,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 339 transitions, 4123 flow [2024-06-28 02:53:31,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:53:31,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:53:31,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 02:53:31,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49528301886792453 [2024-06-28 02:53:31,361 INFO L175 Difference]: Start difference. First operand has 134 places, 289 transitions, 3103 flow. Second operand 8 states and 210 transitions. [2024-06-28 02:53:31,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 339 transitions, 4123 flow [2024-06-28 02:53:31,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 339 transitions, 4030 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 02:53:31,797 INFO L231 Difference]: Finished difference. Result has 137 places, 293 transitions, 3205 flow [2024-06-28 02:53:31,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3010, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3205, PETRI_PLACES=137, PETRI_TRANSITIONS=293} [2024-06-28 02:53:31,797 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 81 predicate places. [2024-06-28 02:53:31,797 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 293 transitions, 3205 flow [2024-06-28 02:53:31,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:31,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:31,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:31,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:53:31,798 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:31,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:31,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1148291696, now seen corresponding path program 1 times [2024-06-28 02:53:31,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:31,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672903955] [2024-06-28 02:53:31,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:31,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:32,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:32,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:32,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672903955] [2024-06-28 02:53:32,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672903955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:32,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:32,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:53:32,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749292155] [2024-06-28 02:53:32,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:32,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:53:32,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:32,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:53:32,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:53:32,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 02:53:32,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 293 transitions, 3205 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:32,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:32,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 02:53:32,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:36,056 INFO L124 PetriNetUnfolderBase]: 15143/21188 cut-off events. [2024-06-28 02:53:36,056 INFO L125 PetriNetUnfolderBase]: For 473022/473169 co-relation queries the response was YES. [2024-06-28 02:53:36,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127173 conditions, 21188 events. 15143/21188 cut-off events. For 473022/473169 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 120420 event pairs, 8790 based on Foata normal form. 55/21143 useless extension candidates. Maximal degree in co-relation 127119. Up to 20409 conditions per place. [2024-06-28 02:53:36,401 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 286 selfloop transitions, 15 changer transitions 0/315 dead transitions. [2024-06-28 02:53:36,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 315 transitions, 3947 flow [2024-06-28 02:53:36,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:53:36,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:53:36,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 02:53:36,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591194968553459 [2024-06-28 02:53:36,402 INFO L175 Difference]: Start difference. First operand has 137 places, 293 transitions, 3205 flow. Second operand 6 states and 146 transitions. [2024-06-28 02:53:36,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 315 transitions, 3947 flow [2024-06-28 02:53:36,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 315 transitions, 3788 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 02:53:36,881 INFO L231 Difference]: Finished difference. Result has 137 places, 297 transitions, 3147 flow [2024-06-28 02:53:36,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3046, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3147, PETRI_PLACES=137, PETRI_TRANSITIONS=297} [2024-06-28 02:53:36,881 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 81 predicate places. [2024-06-28 02:53:36,881 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 297 transitions, 3147 flow [2024-06-28 02:53:36,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:36,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:36,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:36,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:53:36,882 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:36,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:36,882 INFO L85 PathProgramCache]: Analyzing trace with hash -727104061, now seen corresponding path program 1 times [2024-06-28 02:53:36,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:36,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269703708] [2024-06-28 02:53:36,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:36,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:37,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:37,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269703708] [2024-06-28 02:53:37,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269703708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:37,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:37,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:53:37,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141965738] [2024-06-28 02:53:37,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:37,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:53:37,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:37,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:53:37,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:53:37,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:53:37,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 297 transitions, 3147 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:37,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:37,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:53:37,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:41,275 INFO L124 PetriNetUnfolderBase]: 15497/21784 cut-off events. [2024-06-28 02:53:41,275 INFO L125 PetriNetUnfolderBase]: For 552258/552282 co-relation queries the response was YES. [2024-06-28 02:53:41,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140956 conditions, 21784 events. 15497/21784 cut-off events. For 552258/552282 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 127810 event pairs, 6285 based on Foata normal form. 36/21479 useless extension candidates. Maximal degree in co-relation 140901. Up to 19130 conditions per place. [2024-06-28 02:53:41,506 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 243 selfloop transitions, 133 changer transitions 0/386 dead transitions. [2024-06-28 02:53:41,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 386 transitions, 4749 flow [2024-06-28 02:53:41,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:53:41,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:53:41,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 284 transitions. [2024-06-28 02:53:41,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5358490566037736 [2024-06-28 02:53:41,507 INFO L175 Difference]: Start difference. First operand has 137 places, 297 transitions, 3147 flow. Second operand 10 states and 284 transitions. [2024-06-28 02:53:41,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 386 transitions, 4749 flow [2024-06-28 02:53:42,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 386 transitions, 4678 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 02:53:42,122 INFO L231 Difference]: Finished difference. Result has 145 places, 308 transitions, 3628 flow [2024-06-28 02:53:42,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3076, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3628, PETRI_PLACES=145, PETRI_TRANSITIONS=308} [2024-06-28 02:53:42,123 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 89 predicate places. [2024-06-28 02:53:42,123 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 308 transitions, 3628 flow [2024-06-28 02:53:42,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:42,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:42,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:42,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:53:42,124 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:42,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:42,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1727099751, now seen corresponding path program 2 times [2024-06-28 02:53:42,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:42,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589919615] [2024-06-28 02:53:42,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:42,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:42,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:42,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589919615] [2024-06-28 02:53:42,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589919615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:42,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:42,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:53:42,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359359795] [2024-06-28 02:53:42,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:42,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:53:42,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:42,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:53:42,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:53:43,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:53:43,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 308 transitions, 3628 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:43,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:43,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:53:43,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand