./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix046.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix046.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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/mix046.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix046.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-76401ed-m [2024-06-20 16:25:51,358 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 16:25:51,464 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 16:25:51,469 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 16:25:51,469 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 16:25:51,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 16:25:51,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 16:25:51,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 16:25:51,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 16:25:51,497 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 16:25:51,497 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 16:25:51,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 16:25:51,498 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 16:25:51,499 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 16:25:51,499 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 16:25:51,499 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 16:25:51,499 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 16:25:51,500 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 16:25:51,500 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 16:25:51,500 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 16:25:51,500 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 16:25:51,501 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 16:25:51,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 16:25:51,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 16:25:51,501 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 16:25:51,501 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 16:25:51,502 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 16:25:51,502 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 16:25:51,502 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 16:25:51,502 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 16:25:51,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 16:25:51,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 16:25:51,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:25:51,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 16:25:51,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 16:25:51,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 16:25:51,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 16:25:51,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 16:25:51,505 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 16:25:51,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 16:25:51,505 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 16:25:51,505 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 16:25:51,505 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 16:25:51,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 16:25:51,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 16:25:51,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 16:25:51,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 16:25:51,727 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 16:25:51,728 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 16:25:51,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix046.oepc.i [2024-06-20 16:25:52,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 16:25:52,985 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 16:25:52,986 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix046.oepc.i [2024-06-20 16:25:52,997 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a1ee7de0/58d6a7dc0e8f4ddeb4212975b7bb40d1/FLAG61f210479 [2024-06-20 16:25:53,007 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a1ee7de0/58d6a7dc0e8f4ddeb4212975b7bb40d1 [2024-06-20 16:25:53,009 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 16:25:53,009 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 16:25:53,010 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix046.oepc.yml/witness.yml [2024-06-20 16:25:53,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 16:25:53,154 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 16:25:53,154 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 16:25:53,154 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 16:25:53,158 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 16:25:53,159 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:25:53" (1/2) ... [2024-06-20 16:25:53,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60c9f9f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:25:53, skipping insertion in model container [2024-06-20 16:25:53,160 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:25:53" (1/2) ... [2024-06-20 16:25:53,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c1ed7aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:25:53, skipping insertion in model container [2024-06-20 16:25:53,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:25:53" (2/2) ... [2024-06-20 16:25:53,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60c9f9f1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:25:53, skipping insertion in model container [2024-06-20 16:25:53,161 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:25:53" (2/2) ... [2024-06-20 16:25:53,161 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 16:25:53,258 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 16:25:53,259 INFO L97 edCorrectnessWitness]: Location invariant before [L877-L877] ((((((((((((((((((((((! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-20 16:25:53,259 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ((((((((((((((((((((((! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-20 16:25:53,260 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] ((((((((((((((((((((((! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-20 16:25:53,260 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ((((((((((((((((((((((! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-20 16:25:53,260 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 16:25:53,261 INFO L106 edCorrectnessWitness]: ghost_update [L870-L870] multithreaded = 1; [2024-06-20 16:25:53,308 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 16:25:53,573 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:25:53,580 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 16:25:53,748 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:25:53,784 INFO L206 MainTranslator]: Completed translation [2024-06-20 16:25:53,784 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:25:53 WrapperNode [2024-06-20 16:25:53,785 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 16:25:53,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 16:25:53,789 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 16:25:53,790 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 16:25:53,795 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 20.06 04:25:53" (1/1) ... [2024-06-20 16:25:53,814 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 20.06 04:25:53" (1/1) ... [2024-06-20 16:25:53,853 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-20 16:25:53,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 16:25:53,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 16:25:53,855 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 16:25:53,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 16:25:53,864 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:25:53" (1/1) ... [2024-06-20 16:25:53,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:25:53" (1/1) ... [2024-06-20 16:25:53,867 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:25:53" (1/1) ... [2024-06-20 16:25:53,880 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]. [2024-06-20 16:25:53,885 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:25:53" (1/1) ... [2024-06-20 16:25:53,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:25:53" (1/1) ... [2024-06-20 16:25:53,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:25:53" (1/1) ... [2024-06-20 16:25:53,897 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:25:53" (1/1) ... [2024-06-20 16:25:53,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:25:53" (1/1) ... [2024-06-20 16:25:53,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:25:53" (1/1) ... [2024-06-20 16:25:53,903 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 16:25:53,903 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 16:25:53,903 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 16:25:53,904 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 16:25:53,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:25:53" (1/1) ... [2024-06-20 16:25:53,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:25:53,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 16:25:53,962 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) [2024-06-20 16:25:54,027 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 [2024-06-20 16:25:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 16:25:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 16:25:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-20 16:25:54,055 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-20 16:25:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-20 16:25:54,056 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-20 16:25:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-20 16:25:54,056 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-20 16:25:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-20 16:25:54,057 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-20 16:25:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 16:25:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 16:25:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 16:25:54,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 16:25:54,059 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 16:25:54,191 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 16:25:54,193 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 16:25:54,524 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 16:25:54,524 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 16:25:54,686 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 16:25:54,686 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 16:25:54,687 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:25:54 BoogieIcfgContainer [2024-06-20 16:25:54,687 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 16:25:54,689 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 16:25:54,689 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 16:25:54,692 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 16:25:54,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 04:25:53" (1/4) ... [2024-06-20 16:25:54,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4a7273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 04:25:54, skipping insertion in model container [2024-06-20 16:25:54,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:25:53" (2/4) ... [2024-06-20 16:25:54,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4a7273 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 04:25:54, skipping insertion in model container [2024-06-20 16:25:54,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:25:53" (3/4) ... [2024-06-20 16:25:54,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4a7273 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 04:25:54, skipping insertion in model container [2024-06-20 16:25:54,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:25:54" (4/4) ... [2024-06-20 16:25:54,695 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.oepc.i [2024-06-20 16:25:54,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 16:25:54,708 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-20 16:25:54,708 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 16:25:54,758 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 16:25:54,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-20 16:25:54,836 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-20 16:25:54,836 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:25:54,838 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 87 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. [2024-06-20 16:25:54,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-20 16:25:54,840 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-20 16:25:54,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 16:25:54,850 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;@7f8e686, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 16:25:54,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-20 16:25:54,853 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 16:25:54,853 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-20 16:25:54,853 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:25:54,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:54,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 16:25:54,854 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)] === [2024-06-20 16:25:54,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:54,858 INFO L85 PathProgramCache]: Analyzing trace with hash 405960659, now seen corresponding path program 1 times [2024-06-20 16:25:54,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:54,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633016030] [2024-06-20 16:25:54,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:54,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:55,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:55,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633016030] [2024-06-20 16:25:55,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633016030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:55,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:55,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 16:25:55,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81946405] [2024-06-20 16:25:55,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:55,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 16:25:55,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:55,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 16:25:55,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 16:25:55,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-20 16:25:55,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-06-20 16:25:55,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:55,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-20 16:25:55,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:57,968 INFO L124 PetriNetUnfolderBase]: 13283/18236 cut-off events. [2024-06-20 16:25:57,969 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2024-06-20 16:25:57,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36594 conditions, 18236 events. 13283/18236 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 98688 event pairs, 10314 based on Foata normal form. 1/17813 useless extension candidates. Maximal degree in co-relation 36581. Up to 17909 conditions per place. [2024-06-20 16:25:58,070 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 45 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-20 16:25:58,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 235 flow [2024-06-20 16:25:58,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 16:25:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 16:25:58,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-06-20 16:25:58,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6037735849056604 [2024-06-20 16:25:58,082 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 96 transitions. [2024-06-20 16:25:58,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 235 flow [2024-06-20 16:25:58,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-20 16:25:58,087 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-20 16:25:58,088 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} [2024-06-20 16:25:58,091 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-20 16:25:58,091 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-20 16:25:58,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-06-20 16:25:58,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:58,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:58,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 16:25:58,092 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)] === [2024-06-20 16:25:58,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:58,093 INFO L85 PathProgramCache]: Analyzing trace with hash -712681370, now seen corresponding path program 1 times [2024-06-20 16:25:58,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:58,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422663152] [2024-06-20 16:25:58,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:58,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:58,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:58,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422663152] [2024-06-20 16:25:58,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422663152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:58,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:58,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 16:25:58,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866278656] [2024-06-20 16:25:58,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:58,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 16:25:58,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:58,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 16:25:58,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 16:25:58,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-20 16:25:58,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:58,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:58,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-20 16:25:58,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:00,693 INFO L124 PetriNetUnfolderBase]: 13273/18222 cut-off events. [2024-06-20 16:26:00,694 INFO L125 PetriNetUnfolderBase]: For 3276/3276 co-relation queries the response was YES. [2024-06-20 16:26:00,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41030 conditions, 18222 events. 13273/18222 cut-off events. For 3276/3276 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 98600 event pairs, 9230 based on Foata normal form. 4/18014 useless extension candidates. Maximal degree in co-relation 41018. Up to 17874 conditions per place. [2024-06-20 16:26:00,777 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 55 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-20 16:26:00,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 327 flow [2024-06-20 16:26:00,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 16:26:00,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 16:26:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-06-20 16:26:00,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2024-06-20 16:26:00,780 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 124 transitions. [2024-06-20 16:26:00,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 327 flow [2024-06-20 16:26:00,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 16:26:00,787 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-20 16:26:00,787 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} [2024-06-20 16:26:00,787 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-20 16:26:00,788 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-20 16:26:00,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:26:00,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:00,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:00,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 16:26:00,788 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)] === [2024-06-20 16:26:00,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:00,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1986940795, now seen corresponding path program 1 times [2024-06-20 16:26:00,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:00,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918697300] [2024-06-20 16:26:00,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:00,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:01,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:01,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918697300] [2024-06-20 16:26:01,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918697300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:01,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:01,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:26:01,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195411416] [2024-06-20 16:26:01,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:01,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:26:01,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:01,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:26:01,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:26:01,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-20 16:26:01,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2024-06-20 16:26:01,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:01,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-20 16:26:01,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:04,284 INFO L124 PetriNetUnfolderBase]: 16097/22015 cut-off events. [2024-06-20 16:26:04,285 INFO L125 PetriNetUnfolderBase]: For 10815/10815 co-relation queries the response was YES. [2024-06-20 16:26:04,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54494 conditions, 22015 events. 16097/22015 cut-off events. For 10815/10815 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 118970 event pairs, 9531 based on Foata normal form. 4/21765 useless extension candidates. Maximal degree in co-relation 54480. Up to 21576 conditions per place. [2024-06-20 16:26:04,362 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 76 selfloop transitions, 17 changer transitions 0/99 dead transitions. [2024-06-20 16:26:04,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 99 transitions, 514 flow [2024-06-20 16:26:04,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:26:04,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:26:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-06-20 16:26:04,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.550314465408805 [2024-06-20 16:26:04,369 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 6 states and 175 transitions. [2024-06-20 16:26:04,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 99 transitions, 514 flow [2024-06-20 16:26:04,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 99 transitions, 486 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-20 16:26:04,373 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 258 flow [2024-06-20 16:26:04,373 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} [2024-06-20 16:26:04,374 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-20 16:26:04,374 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 258 flow [2024-06-20 16:26:04,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2024-06-20 16:26:04,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:04,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:04,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 16:26:04,376 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)] === [2024-06-20 16:26:04,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:04,376 INFO L85 PathProgramCache]: Analyzing trace with hash 256885529, now seen corresponding path program 1 times [2024-06-20 16:26:04,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:04,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558203029] [2024-06-20 16:26:04,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:04,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:05,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:05,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558203029] [2024-06-20 16:26:05,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558203029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:05,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:05,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:26:05,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266768401] [2024-06-20 16:26:05,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:05,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:26:05,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:05,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:26:05,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:26:05,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-20 16:26:05,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 258 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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) [2024-06-20 16:26:05,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:05,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-20 16:26:05,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:07,827 INFO L124 PetriNetUnfolderBase]: 16081/21991 cut-off events. [2024-06-20 16:26:07,828 INFO L125 PetriNetUnfolderBase]: For 21935/21935 co-relation queries the response was YES. [2024-06-20 16:26:07,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60426 conditions, 21991 events. 16081/21991 cut-off events. For 21935/21935 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 118762 event pairs, 8286 based on Foata normal form. 8/21745 useless extension candidates. Maximal degree in co-relation 60410. Up to 21510 conditions per place. [2024-06-20 16:26:07,920 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 83 selfloop transitions, 20 changer transitions 0/109 dead transitions. [2024-06-20 16:26:07,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 109 transitions, 604 flow [2024-06-20 16:26:07,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:26:07,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:26:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-20 16:26:07,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5336927223719676 [2024-06-20 16:26:07,922 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 258 flow. Second operand 7 states and 198 transitions. [2024-06-20 16:26:07,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 109 transitions, 604 flow [2024-06-20 16:26:07,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 109 transitions, 565 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-20 16:26:07,927 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 291 flow [2024-06-20 16:26:07,927 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} [2024-06-20 16:26:07,928 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2024-06-20 16:26:07,928 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 291 flow [2024-06-20 16:26:07,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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) [2024-06-20 16:26:07,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:07,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:07,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 16:26:07,929 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)] === [2024-06-20 16:26:07,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:07,929 INFO L85 PathProgramCache]: Analyzing trace with hash -891822667, now seen corresponding path program 1 times [2024-06-20 16:26:07,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:07,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213603974] [2024-06-20 16:26:07,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:07,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:08,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:08,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213603974] [2024-06-20 16:26:08,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213603974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:08,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:08,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:26:08,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914052501] [2024-06-20 16:26:08,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:08,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:26:08,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:08,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:26:08,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:26:08,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 16:26:08,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 291 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-06-20 16:26:08,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:08,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 16:26:08,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:11,115 INFO L124 PetriNetUnfolderBase]: 16072/21979 cut-off events. [2024-06-20 16:26:11,115 INFO L125 PetriNetUnfolderBase]: For 34236/34236 co-relation queries the response was YES. [2024-06-20 16:26:11,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64521 conditions, 21979 events. 16072/21979 cut-off events. For 34236/34236 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 118505 event pairs, 9029 based on Foata normal form. 3/21728 useless extension candidates. Maximal degree in co-relation 64503. Up to 21588 conditions per place. [2024-06-20 16:26:11,206 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 67 selfloop transitions, 10 changer transitions 0/82 dead transitions. [2024-06-20 16:26:11,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 515 flow [2024-06-20 16:26:11,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:26:11,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:26:11,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-20 16:26:11,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-06-20 16:26:11,208 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 291 flow. Second operand 5 states and 120 transitions. [2024-06-20 16:26:11,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 515 flow [2024-06-20 16:26:11,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 82 transitions, 461 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-20 16:26:11,214 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 302 flow [2024-06-20 16:26:11,214 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} [2024-06-20 16:26:11,214 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2024-06-20 16:26:11,215 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 302 flow [2024-06-20 16:26:11,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-06-20 16:26:11,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:11,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:11,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 16:26:11,215 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)] === [2024-06-20 16:26:11,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:11,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1876696885, now seen corresponding path program 1 times [2024-06-20 16:26:11,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:11,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426918104] [2024-06-20 16:26:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:11,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:11,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:11,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426918104] [2024-06-20 16:26:11,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426918104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:11,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:11,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:26:11,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206116607] [2024-06-20 16:26:11,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:11,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:26:11,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:11,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:26:11,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:26:12,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 16:26:12,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 302 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-06-20 16:26:12,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:12,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 16:26:12,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:14,300 INFO L124 PetriNetUnfolderBase]: 16096/22079 cut-off events. [2024-06-20 16:26:14,301 INFO L125 PetriNetUnfolderBase]: For 48221/48221 co-relation queries the response was YES. [2024-06-20 16:26:14,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69540 conditions, 22079 events. 16096/22079 cut-off events. For 48221/48221 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 119291 event pairs, 8595 based on Foata normal form. 10/21871 useless extension candidates. Maximal degree in co-relation 69520. Up to 21510 conditions per place. [2024-06-20 16:26:14,439 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 82 selfloop transitions, 22 changer transitions 0/109 dead transitions. [2024-06-20 16:26:14,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 109 transitions, 714 flow [2024-06-20 16:26:14,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:26:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:26:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-20 16:26:14,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779874213836478 [2024-06-20 16:26:14,440 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 302 flow. Second operand 6 states and 152 transitions. [2024-06-20 16:26:14,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 109 transitions, 714 flow [2024-06-20 16:26:14,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 109 transitions, 681 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-20 16:26:14,451 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 449 flow [2024-06-20 16:26:14,451 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=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=449, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2024-06-20 16:26:14,452 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-06-20 16:26:14,452 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 449 flow [2024-06-20 16:26:14,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-06-20 16:26:14,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:14,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:14,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 16:26:14,453 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)] === [2024-06-20 16:26:14,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:14,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1879612572, now seen corresponding path program 1 times [2024-06-20 16:26:14,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:14,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687177772] [2024-06-20 16:26:14,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:14,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:15,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:15,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687177772] [2024-06-20 16:26:15,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687177772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:15,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:15,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:26:15,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516837619] [2024-06-20 16:26:15,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:15,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:26:15,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:15,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:26:15,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:26:15,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 16:26:15,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 449 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-06-20 16:26:15,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:15,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 16:26:15,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:17,848 INFO L124 PetriNetUnfolderBase]: 16172/22242 cut-off events. [2024-06-20 16:26:17,849 INFO L125 PetriNetUnfolderBase]: For 77529/77539 co-relation queries the response was YES. [2024-06-20 16:26:17,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77956 conditions, 22242 events. 16172/22242 cut-off events. For 77529/77539 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 121820 event pairs, 10679 based on Foata normal form. 11/22010 useless extension candidates. Maximal degree in co-relation 77933. Up to 21674 conditions per place. [2024-06-20 16:26:17,957 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 92 selfloop transitions, 23 changer transitions 0/120 dead transitions. [2024-06-20 16:26:17,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 120 transitions, 893 flow [2024-06-20 16:26:17,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:26:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:26:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-20 16:26:17,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.431266846361186 [2024-06-20 16:26:17,959 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 449 flow. Second operand 7 states and 160 transitions. [2024-06-20 16:26:17,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 120 transitions, 893 flow [2024-06-20 16:26:17,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 120 transitions, 867 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-20 16:26:17,980 INFO L231 Difference]: Finished difference. Result has 79 places, 93 transitions, 619 flow [2024-06-20 16:26:17,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=619, PETRI_PLACES=79, PETRI_TRANSITIONS=93} [2024-06-20 16:26:17,980 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2024-06-20 16:26:17,981 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 93 transitions, 619 flow [2024-06-20 16:26:17,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-06-20 16:26:17,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:17,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:17,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 16:26:17,981 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)] === [2024-06-20 16:26:17,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:17,982 INFO L85 PathProgramCache]: Analyzing trace with hash -919141340, now seen corresponding path program 2 times [2024-06-20 16:26:17,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:17,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782358038] [2024-06-20 16:26:17,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:17,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:18,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:18,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:18,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782358038] [2024-06-20 16:26:18,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782358038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:18,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:18,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:26:18,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004082852] [2024-06-20 16:26:18,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:18,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:26:18,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:18,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:26:18,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:26:18,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 16:26:18,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 93 transitions, 619 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-06-20 16:26:18,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:18,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 16:26:18,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:21,436 INFO L124 PetriNetUnfolderBase]: 16242/22364 cut-off events. [2024-06-20 16:26:21,436 INFO L125 PetriNetUnfolderBase]: For 100769/100779 co-relation queries the response was YES. [2024-06-20 16:26:21,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83636 conditions, 22364 events. 16242/22364 cut-off events. For 100769/100779 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 122664 event pairs, 10132 based on Foata normal form. 11/22138 useless extension candidates. Maximal degree in co-relation 83608. Up to 21712 conditions per place. [2024-06-20 16:26:21,623 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 99 selfloop transitions, 49 changer transitions 0/153 dead transitions. [2024-06-20 16:26:21,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 153 transitions, 1323 flow [2024-06-20 16:26:21,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:26:21,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:26:21,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-20 16:26:21,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4743935309973046 [2024-06-20 16:26:21,626 INFO L175 Difference]: Start difference. First operand has 79 places, 93 transitions, 619 flow. Second operand 7 states and 176 transitions. [2024-06-20 16:26:21,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 153 transitions, 1323 flow [2024-06-20 16:26:21,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 153 transitions, 1223 flow, removed 49 selfloop flow, removed 1 redundant places. [2024-06-20 16:26:21,694 INFO L231 Difference]: Finished difference. Result has 87 places, 117 transitions, 930 flow [2024-06-20 16:26:21,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=930, PETRI_PLACES=87, PETRI_TRANSITIONS=117} [2024-06-20 16:26:21,695 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-06-20 16:26:21,695 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 117 transitions, 930 flow [2024-06-20 16:26:21,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-06-20 16:26:21,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:21,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:21,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 16:26:21,696 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)] === [2024-06-20 16:26:21,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:21,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1484159946, now seen corresponding path program 3 times [2024-06-20 16:26:21,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:21,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453859603] [2024-06-20 16:26:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:21,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:22,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:22,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453859603] [2024-06-20 16:26:22,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453859603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:22,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:22,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:26:22,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751422697] [2024-06-20 16:26:22,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:22,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:26:22,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:22,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:26:22,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:26:22,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 16:26:22,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 117 transitions, 930 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-06-20 16:26:22,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:22,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 16:26:22,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:24,775 INFO L124 PetriNetUnfolderBase]: 16226/22315 cut-off events. [2024-06-20 16:26:24,775 INFO L125 PetriNetUnfolderBase]: For 127951/127951 co-relation queries the response was YES. [2024-06-20 16:26:24,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88915 conditions, 22315 events. 16226/22315 cut-off events. For 127951/127951 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 122218 event pairs, 10500 based on Foata normal form. 5/22078 useless extension candidates. Maximal degree in co-relation 88882. Up to 21776 conditions per place. [2024-06-20 16:26:24,965 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 117 selfloop transitions, 19 changer transitions 0/141 dead transitions. [2024-06-20 16:26:24,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 141 transitions, 1282 flow [2024-06-20 16:26:24,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:26:24,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:26:24,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-20 16:26:24,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44654088050314467 [2024-06-20 16:26:24,966 INFO L175 Difference]: Start difference. First operand has 87 places, 117 transitions, 930 flow. Second operand 6 states and 142 transitions. [2024-06-20 16:26:24,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 141 transitions, 1282 flow [2024-06-20 16:26:25,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 141 transitions, 1159 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-20 16:26:25,056 INFO L231 Difference]: Finished difference. Result has 90 places, 117 transitions, 860 flow [2024-06-20 16:26:25,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=860, PETRI_PLACES=90, PETRI_TRANSITIONS=117} [2024-06-20 16:26:25,056 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2024-06-20 16:26:25,056 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 117 transitions, 860 flow [2024-06-20 16:26:25,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-06-20 16:26:25,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:25,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:25,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 16:26:25,057 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)] === [2024-06-20 16:26:25,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:25,058 INFO L85 PathProgramCache]: Analyzing trace with hash -903456412, now seen corresponding path program 1 times [2024-06-20 16:26:25,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:25,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817666128] [2024-06-20 16:26:25,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:25,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:25,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:25,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817666128] [2024-06-20 16:26:25,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817666128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:25,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:25,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:26:25,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560625481] [2024-06-20 16:26:25,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:25,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:26:25,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:25,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:26:25,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:26:25,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 16:26:25,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 117 transitions, 860 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-20 16:26:25,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:25,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 16:26:25,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:28,402 INFO L124 PetriNetUnfolderBase]: 16327/22473 cut-off events. [2024-06-20 16:26:28,403 INFO L125 PetriNetUnfolderBase]: For 142229/142235 co-relation queries the response was YES. [2024-06-20 16:26:28,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91190 conditions, 22473 events. 16327/22473 cut-off events. For 142229/142235 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 123019 event pairs, 9925 based on Foata normal form. 7/22244 useless extension candidates. Maximal degree in co-relation 91156. Up to 21830 conditions per place. [2024-06-20 16:26:28,588 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 145 selfloop transitions, 45 changer transitions 0/195 dead transitions. [2024-06-20 16:26:28,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 195 transitions, 1696 flow [2024-06-20 16:26:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:26:28,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:26:28,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 240 transitions. [2024-06-20 16:26:28,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-06-20 16:26:28,590 INFO L175 Difference]: Start difference. First operand has 90 places, 117 transitions, 860 flow. Second operand 10 states and 240 transitions. [2024-06-20 16:26:28,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 195 transitions, 1696 flow [2024-06-20 16:26:28,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 195 transitions, 1655 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-20 16:26:28,758 INFO L231 Difference]: Finished difference. Result has 98 places, 138 transitions, 1146 flow [2024-06-20 16:26:28,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1146, PETRI_PLACES=98, PETRI_TRANSITIONS=138} [2024-06-20 16:26:28,759 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2024-06-20 16:26:28,759 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 138 transitions, 1146 flow [2024-06-20 16:26:28,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-20 16:26:28,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:28,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:28,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 16:26:28,759 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)] === [2024-06-20 16:26:28,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:28,760 INFO L85 PathProgramCache]: Analyzing trace with hash 457466822, now seen corresponding path program 2 times [2024-06-20 16:26:28,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:28,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243877970] [2024-06-20 16:26:28,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:28,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:29,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:29,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243877970] [2024-06-20 16:26:29,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243877970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:29,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:29,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:26:29,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067542226] [2024-06-20 16:26:29,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:29,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:26:29,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:29,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:26:29,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:26:29,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 16:26:29,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 138 transitions, 1146 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-20 16:26:29,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:29,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 16:26:29,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:32,144 INFO L124 PetriNetUnfolderBase]: 16426/22599 cut-off events. [2024-06-20 16:26:32,145 INFO L125 PetriNetUnfolderBase]: For 174105/174111 co-relation queries the response was YES. [2024-06-20 16:26:32,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97706 conditions, 22599 events. 16426/22599 cut-off events. For 174105/174111 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 123569 event pairs, 9578 based on Foata normal form. 9/22378 useless extension candidates. Maximal degree in co-relation 97669. Up to 21960 conditions per place. [2024-06-20 16:26:32,360 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 144 selfloop transitions, 52 changer transitions 0/201 dead transitions. [2024-06-20 16:26:32,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 201 transitions, 1956 flow [2024-06-20 16:26:32,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:26:32,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:26:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-20 16:26:32,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455188679245283 [2024-06-20 16:26:32,362 INFO L175 Difference]: Start difference. First operand has 98 places, 138 transitions, 1146 flow. Second operand 8 states and 193 transitions. [2024-06-20 16:26:32,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 201 transitions, 1956 flow [2024-06-20 16:26:32,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 201 transitions, 1769 flow, removed 72 selfloop flow, removed 4 redundant places. [2024-06-20 16:26:32,510 INFO L231 Difference]: Finished difference. Result has 103 places, 162 transitions, 1400 flow [2024-06-20 16:26:32,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1400, PETRI_PLACES=103, PETRI_TRANSITIONS=162} [2024-06-20 16:26:32,511 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 47 predicate places. [2024-06-20 16:26:32,511 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 162 transitions, 1400 flow [2024-06-20 16:26:32,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-20 16:26:32,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:32,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:32,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 16:26:32,512 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-20 16:26:32,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:32,512 INFO L85 PathProgramCache]: Analyzing trace with hash 457471658, now seen corresponding path program 1 times [2024-06-20 16:26:32,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:32,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137173081] [2024-06-20 16:26:32,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:32,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:33,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:33,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137173081] [2024-06-20 16:26:33,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137173081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:33,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:33,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:26:33,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680340282] [2024-06-20 16:26:33,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:33,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:26:33,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:33,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:26:33,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:26:33,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 16:26:33,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 162 transitions, 1400 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-20 16:26:33,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:33,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 16:26:33,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:36,146 INFO L124 PetriNetUnfolderBase]: 16723/23043 cut-off events. [2024-06-20 16:26:36,147 INFO L125 PetriNetUnfolderBase]: For 200330/200344 co-relation queries the response was YES. [2024-06-20 16:26:36,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101700 conditions, 23043 events. 16723/23043 cut-off events. For 200330/200344 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 126666 event pairs, 9304 based on Foata normal form. 17/22831 useless extension candidates. Maximal degree in co-relation 101660. Up to 21961 conditions per place. [2024-06-20 16:26:36,356 INFO L140 encePairwiseOnDemand]: 36/53 looper letters, 175 selfloop transitions, 66 changer transitions 0/246 dead transitions. [2024-06-20 16:26:36,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 246 transitions, 2584 flow [2024-06-20 16:26:36,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:26:36,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:26:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-20 16:26:36,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047169811320755 [2024-06-20 16:26:36,358 INFO L175 Difference]: Start difference. First operand has 103 places, 162 transitions, 1400 flow. Second operand 8 states and 214 transitions. [2024-06-20 16:26:36,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 246 transitions, 2584 flow [2024-06-20 16:26:36,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 246 transitions, 2471 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-20 16:26:36,623 INFO L231 Difference]: Finished difference. Result has 112 places, 190 transitions, 1792 flow [2024-06-20 16:26:36,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1792, PETRI_PLACES=112, PETRI_TRANSITIONS=190} [2024-06-20 16:26:36,624 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2024-06-20 16:26:36,624 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 190 transitions, 1792 flow [2024-06-20 16:26:36,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-20 16:26:36,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:36,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:36,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 16:26:36,625 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)] === [2024-06-20 16:26:36,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:36,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1543685732, now seen corresponding path program 3 times [2024-06-20 16:26:36,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:36,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937674313] [2024-06-20 16:26:36,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:36,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:37,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:37,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937674313] [2024-06-20 16:26:37,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937674313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:37,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:37,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:26:37,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631937892] [2024-06-20 16:26:37,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:37,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:26:37,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:37,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:26:37,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:26:37,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 16:26:37,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 190 transitions, 1792 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-20 16:26:37,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:37,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 16:26:37,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:40,437 INFO L124 PetriNetUnfolderBase]: 16770/23033 cut-off events. [2024-06-20 16:26:40,437 INFO L125 PetriNetUnfolderBase]: For 247630/247640 co-relation queries the response was YES. [2024-06-20 16:26:40,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112677 conditions, 23033 events. 16770/23033 cut-off events. For 247630/247640 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 125609 event pairs, 9229 based on Foata normal form. 11/22818 useless extension candidates. Maximal degree in co-relation 112632. Up to 22228 conditions per place. [2024-06-20 16:26:40,646 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 143 selfloop transitions, 101 changer transitions 0/249 dead transitions. [2024-06-20 16:26:40,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 249 transitions, 2798 flow [2024-06-20 16:26:40,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:26:40,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:26:40,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-20 16:26:40,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740566037735849 [2024-06-20 16:26:40,648 INFO L175 Difference]: Start difference. First operand has 112 places, 190 transitions, 1792 flow. Second operand 8 states and 201 transitions. [2024-06-20 16:26:40,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 249 transitions, 2798 flow [2024-06-20 16:26:41,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 249 transitions, 2693 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-06-20 16:26:41,012 INFO L231 Difference]: Finished difference. Result has 119 places, 206 transitions, 2173 flow [2024-06-20 16:26:41,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2173, PETRI_PLACES=119, PETRI_TRANSITIONS=206} [2024-06-20 16:26:41,013 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-20 16:26:41,013 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 206 transitions, 2173 flow [2024-06-20 16:26:41,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-20 16:26:41,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:41,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:41,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-20 16:26:41,014 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)] === [2024-06-20 16:26:41,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:41,014 INFO L85 PathProgramCache]: Analyzing trace with hash 203125616, now seen corresponding path program 4 times [2024-06-20 16:26:41,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:41,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127784495] [2024-06-20 16:26:41,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:41,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:41,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:41,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:41,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127784495] [2024-06-20 16:26:41,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127784495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:41,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:41,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:26:41,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499408703] [2024-06-20 16:26:41,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:41,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:26:41,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:41,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:26:41,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:26:42,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 16:26:42,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 206 transitions, 2173 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-20 16:26:42,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:42,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 16:26:42,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:45,050 INFO L124 PetriNetUnfolderBase]: 16754/23009 cut-off events. [2024-06-20 16:26:45,050 INFO L125 PetriNetUnfolderBase]: For 292492/292498 co-relation queries the response was YES. [2024-06-20 16:26:45,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116916 conditions, 23009 events. 16754/23009 cut-off events. For 292492/292498 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 125570 event pairs, 9571 based on Foata normal form. 9/22787 useless extension candidates. Maximal degree in co-relation 116868. Up to 22359 conditions per place. [2024-06-20 16:26:45,267 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 175 selfloop transitions, 60 changer transitions 0/240 dead transitions. [2024-06-20 16:26:45,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 240 transitions, 2813 flow [2024-06-20 16:26:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:26:45,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:26:45,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-20 16:26:45,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4582210242587601 [2024-06-20 16:26:45,285 INFO L175 Difference]: Start difference. First operand has 119 places, 206 transitions, 2173 flow. Second operand 7 states and 170 transitions. [2024-06-20 16:26:45,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 240 transitions, 2813 flow [2024-06-20 16:26:45,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 240 transitions, 2641 flow, removed 66 selfloop flow, removed 3 redundant places. [2024-06-20 16:26:45,752 INFO L231 Difference]: Finished difference. Result has 123 places, 206 transitions, 2155 flow [2024-06-20 16:26:45,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2001, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2155, PETRI_PLACES=123, PETRI_TRANSITIONS=206} [2024-06-20 16:26:45,753 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 67 predicate places. [2024-06-20 16:26:45,754 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 206 transitions, 2155 flow [2024-06-20 16:26:45,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-20 16:26:45,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:45,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:45,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-20 16:26:45,754 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)] === [2024-06-20 16:26:45,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash 307308636, now seen corresponding path program 5 times [2024-06-20 16:26:45,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:45,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075475065] [2024-06-20 16:26:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:45,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:47,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:47,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:47,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075475065] [2024-06-20 16:26:47,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075475065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:47,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:47,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:26:47,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404071995] [2024-06-20 16:26:47,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:47,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:26:47,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:47,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:26:47,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:26:47,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 16:26:47,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 206 transitions, 2155 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-20 16:26:47,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:47,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 16:26:47,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:50,101 INFO L124 PetriNetUnfolderBase]: 16794/23071 cut-off events. [2024-06-20 16:26:50,102 INFO L125 PetriNetUnfolderBase]: For 312534/312544 co-relation queries the response was YES. [2024-06-20 16:26:50,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119188 conditions, 23071 events. 16794/23071 cut-off events. For 312534/312544 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 125809 event pairs, 9236 based on Foata normal form. 13/22858 useless extension candidates. Maximal degree in co-relation 119138. Up to 22254 conditions per place. [2024-06-20 16:26:50,325 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 147 selfloop transitions, 101 changer transitions 0/253 dead transitions. [2024-06-20 16:26:50,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 253 transitions, 3095 flow [2024-06-20 16:26:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:26:50,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:26:50,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-20 16:26:50,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46900269541778977 [2024-06-20 16:26:50,327 INFO L175 Difference]: Start difference. First operand has 123 places, 206 transitions, 2155 flow. Second operand 7 states and 174 transitions. [2024-06-20 16:26:50,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 253 transitions, 3095 flow [2024-06-20 16:26:50,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 253 transitions, 2947 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-20 16:26:50,710 INFO L231 Difference]: Finished difference. Result has 124 places, 214 transitions, 2379 flow [2024-06-20 16:26:50,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2379, PETRI_PLACES=124, PETRI_TRANSITIONS=214} [2024-06-20 16:26:50,711 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 68 predicate places. [2024-06-20 16:26:50,711 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 214 transitions, 2379 flow [2024-06-20 16:26:50,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-20 16:26:50,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:50,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:50,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-20 16:26:50,712 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)] === [2024-06-20 16:26:50,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:50,712 INFO L85 PathProgramCache]: Analyzing trace with hash 370380326, now seen corresponding path program 2 times [2024-06-20 16:26:50,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:50,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324920632] [2024-06-20 16:26:50,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:50,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:51,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:51,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:51,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324920632] [2024-06-20 16:26:51,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324920632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:51,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:51,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:26:51,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175801307] [2024-06-20 16:26:51,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:51,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:26:51,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:51,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:26:51,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:26:51,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 16:26:51,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 214 transitions, 2379 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-20 16:26:51,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:51,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 16:26:51,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:55,000 INFO L124 PetriNetUnfolderBase]: 17150/23620 cut-off events. [2024-06-20 16:26:55,000 INFO L125 PetriNetUnfolderBase]: For 301341/301357 co-relation queries the response was YES. [2024-06-20 16:26:55,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120758 conditions, 23620 events. 17150/23620 cut-off events. For 301341/301357 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 129713 event pairs, 9329 based on Foata normal form. 27/23418 useless extension candidates. Maximal degree in co-relation 120707. Up to 22336 conditions per place. [2024-06-20 16:26:55,191 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 200 selfloop transitions, 90 changer transitions 0/295 dead transitions. [2024-06-20 16:26:55,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 295 transitions, 3789 flow [2024-06-20 16:26:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:26:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:26:55,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-20 16:26:55,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013477088948787 [2024-06-20 16:26:55,199 INFO L175 Difference]: Start difference. First operand has 124 places, 214 transitions, 2379 flow. Second operand 7 states and 186 transitions. [2024-06-20 16:26:55,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 295 transitions, 3789 flow [2024-06-20 16:26:55,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 295 transitions, 3503 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-20 16:26:55,569 INFO L231 Difference]: Finished difference. Result has 128 places, 243 transitions, 2743 flow [2024-06-20 16:26:55,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2743, PETRI_PLACES=128, PETRI_TRANSITIONS=243} [2024-06-20 16:26:55,569 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2024-06-20 16:26:55,570 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 243 transitions, 2743 flow [2024-06-20 16:26:55,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-20 16:26:55,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:55,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:55,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-20 16:26:55,584 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)] === [2024-06-20 16:26:55,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:55,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1235683946, now seen corresponding path program 3 times [2024-06-20 16:26:55,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:55,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922763014] [2024-06-20 16:26:55,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:55,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:56,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:56,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922763014] [2024-06-20 16:26:56,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922763014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:56,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:56,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:26:56,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019559007] [2024-06-20 16:26:56,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:56,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:26:56,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:56,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:26:56,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:26:56,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 16:26:56,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 243 transitions, 2743 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-20 16:26:56,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:56,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 16:26:56,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand