./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe016_power.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe016_power.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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/safe016_power.oepc.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe016_power.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-958ec4d-m [2024-02-07 14:52:04,705 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:52:04,784 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:52:04,788 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:52:04,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:52:04,838 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:52:04,839 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:52:04,839 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:52:04,840 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:52:04,844 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:52:04,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:52:04,844 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:52:04,845 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:52:04,846 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:52:04,846 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:52:04,847 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:52:04,847 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:52:04,847 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:52:04,847 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:52:04,848 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:52:04,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:52:04,848 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:52:04,849 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:52:04,849 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:52:04,849 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:52:04,850 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:52:04,850 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:52:04,850 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:52:04,851 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:52:04,851 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:52:04,852 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:52:04,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:52:04,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:52:04,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:52:04,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:52:04,853 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:52:04,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:52:04,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:52:04,854 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:52:04,854 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:52:04,854 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:52:04,855 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:52:04,855 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:52:04,855 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:52:05,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:52:05,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:52:05,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:52:05,187 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:52:05,188 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:52:05,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_power.oepc.i [2024-02-07 14:52:06,312 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:52:06,617 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:52:06,618 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_power.oepc.i [2024-02-07 14:52:06,635 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55c3a353a/afa5e7cfd6de402f951d02a7eb3d7926/FLAGc3111eb15 [2024-02-07 14:52:06,665 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55c3a353a/afa5e7cfd6de402f951d02a7eb3d7926 [2024-02-07 14:52:06,668 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:52:06,668 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:52:06,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe016_power.oepc.yml/witness.yml [2024-02-07 14:52:06,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:52:06,824 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:52:06,826 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:52:06,826 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:52:06,831 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:52:06,831 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:52:06" (1/2) ... [2024-02-07 14:52:06,832 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@118db9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:52:06, skipping insertion in model container [2024-02-07 14:52:06,833 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:52:06" (1/2) ... [2024-02-07 14:52:06,835 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3ccabdbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:52:06, skipping insertion in model container [2024-02-07 14:52:06,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:52:06" (2/2) ... [2024-02-07 14:52:06,835 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@118db9b1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:52:06, skipping insertion in model container [2024-02-07 14:52:06,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:52:06" (2/2) ... [2024-02-07 14:52:06,836 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:52:07,043 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:52:07,045 INFO L76 edCorrectnessWitness]: Location invariant before [L883-L883] y$r_buff1_thd0 == (_Bool)0 [2024-02-07 14:52:07,046 INFO L76 edCorrectnessWitness]: Location invariant before [L768-L768] (((0 <= y$mem_tmp) && (y$mem_tmp <= 2)) && (y$mem_tmp <= 127)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2) [2024-02-07 14:52:07,046 INFO L76 edCorrectnessWitness]: Location invariant before [L828-L828] y == 2 [2024-02-07 14:52:07,046 INFO L76 edCorrectnessWitness]: Location invariant before [L885-L885] (((((0 <= __unbuffered_p2_EAX) && (__unbuffered_p2_EAX <= 2)) && (__unbuffered_p2_EAX <= 127)) && (x == 2)) && ((y == 2 && (__unbuffered_p0_EAX == 2 || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) || ((((((0 <= __unbuffered_p0_EAX && 0 <= y) && __unbuffered_p0_EAX <= 2) && y <= 2) && y <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2) [2024-02-07 14:52:07,046 INFO L76 edCorrectnessWitness]: Location invariant before [L788-L788] 0 <= __unbuffered_cnt [2024-02-07 14:52:07,047 INFO L76 edCorrectnessWitness]: Location invariant before [L867-L867] y$w_buff1_used == (_Bool)0 [2024-02-07 14:52:07,047 INFO L76 edCorrectnessWitness]: Location invariant before [L19-L19] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-07 14:52:07,047 INFO L76 edCorrectnessWitness]: Location invariant before [L767-L767] ((((0 <= y) && (y <= 2)) && (y <= 127)) && (y$flush_delayed == (_Bool)0 || y$flush_delayed == (_Bool)1)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:52:07,047 INFO L76 edCorrectnessWitness]: Location invariant before [L853-L853] ((((0LL - (long long )y$w_buff0_used) + (long long )y$w_buff1_used >= 0LL) && ((long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL)) && ((0LL - (long long )y$w_buff0_used) - (long long )y$w_buff1_used >= 0LL)) && ((long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) [2024-02-07 14:52:07,048 INFO L76 edCorrectnessWitness]: Location invariant before [L789-L789] 1 <= __unbuffered_cnt [2024-02-07 14:52:07,048 INFO L76 edCorrectnessWitness]: Location invariant before [L800-L800] 0 <= __unbuffered_cnt [2024-02-07 14:52:07,048 INFO L76 edCorrectnessWitness]: Location invariant before [L781-L781] y$flush_delayed == (_Bool)0 [2024-02-07 14:52:07,048 INFO L76 edCorrectnessWitness]: Location invariant before [L807-L807] (((0 <= x) && (x <= 2)) && (x <= 127)) && ((x == 0 || x == 1) || x == 2) [2024-02-07 14:52:07,048 INFO L76 edCorrectnessWitness]: Location invariant before [L874-L874] weak$$choice2 == (_Bool)0 || weak$$choice2 == (_Bool)1 [2024-02-07 14:52:07,048 INFO L76 edCorrectnessWitness]: Location invariant before [L796-L796] x == 2 [2024-02-07 14:52:07,049 INFO L76 edCorrectnessWitness]: Location invariant before [L837-L837] 0 <= __unbuffered_cnt [2024-02-07 14:52:07,049 INFO L76 edCorrectnessWitness]: Location invariant before [L766-L766] weak$$choice2 == (_Bool)0 || weak$$choice2 == (_Bool)1 [2024-02-07 14:52:07,049 INFO L76 edCorrectnessWitness]: Location invariant before [L801-L801] 1 <= __unbuffered_cnt [2024-02-07 14:52:07,049 INFO L76 edCorrectnessWitness]: Location invariant before [L780-L780] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:52:07,049 INFO L76 edCorrectnessWitness]: Location invariant before [L835-L835] y$r_buff1_thd4 == (_Bool)0 [2024-02-07 14:52:07,049 INFO L76 edCorrectnessWitness]: Location invariant before [L888-L888] y$flush_delayed == (_Bool)0 [2024-02-07 14:52:07,050 INFO L76 edCorrectnessWitness]: Location invariant before [L820-L820] 0 <= __unbuffered_cnt [2024-02-07 14:52:07,050 INFO L76 edCorrectnessWitness]: Location invariant before [L861-L861] 0 <= __unbuffered_cnt [2024-02-07 14:52:07,050 INFO L76 edCorrectnessWitness]: Location invariant before [L832-L832] y$w_buff1_used == (_Bool)0 [2024-02-07 14:52:07,051 INFO L76 edCorrectnessWitness]: Location invariant before [L873-L873] weak$$choice0 == (_Bool)0 || weak$$choice0 == (_Bool)1 [2024-02-07 14:52:07,051 INFO L76 edCorrectnessWitness]: Location invariant before [L777-L777] __unbuffered_p0_EAX$read_delayed == (_Bool)1 [2024-02-07 14:52:07,051 INFO L76 edCorrectnessWitness]: Location invariant before [L817-L817] y$w_buff1_used == (_Bool)0 [2024-02-07 14:52:07,051 INFO L76 edCorrectnessWitness]: Location invariant before [L875-L875] ((((0 <= y) && (y <= 2)) && (y <= 127)) && (y$flush_delayed == (_Bool)0 || y$flush_delayed == (_Bool)1)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:52:07,051 INFO L76 edCorrectnessWitness]: Location invariant before [L863-L863] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 14:52:07,051 INFO L76 edCorrectnessWitness]: Location invariant before [L784-L784] x == 1 [2024-02-07 14:52:07,051 INFO L76 edCorrectnessWitness]: Location invariant before [L887-L887] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:52:07,052 INFO L76 edCorrectnessWitness]: Location invariant before [L811-L811] y == 1 [2024-02-07 14:52:07,052 INFO L76 edCorrectnessWitness]: Location invariant before [L808-L808] (((0 <= __unbuffered_p2_EAX) && (__unbuffered_p2_EAX <= 2)) && (__unbuffered_p2_EAX <= 127)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2) [2024-02-07 14:52:07,052 INFO L76 edCorrectnessWitness]: Location invariant before [L815-L815] y$w_buff1_used == (_Bool)0 [2024-02-07 14:52:07,052 INFO L76 edCorrectnessWitness]: Location invariant before [L821-L821] 1 <= __unbuffered_cnt [2024-02-07 14:52:07,052 INFO L76 edCorrectnessWitness]: Location invariant before [L889-L889] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 14:52:07,053 INFO L76 edCorrectnessWitness]: Location invariant before [L838-L838] 1 <= __unbuffered_cnt [2024-02-07 14:52:07,053 INFO L76 edCorrectnessWitness]: Location invariant before [L778-L778] ((((((((0 <= y) && (0 <= *__unbuffered_p0_EAX$read_delayed_var)) && (y <= 2)) && (y <= 127)) && (*__unbuffered_p0_EAX$read_delayed_var <= 2)) && (*__unbuffered_p0_EAX$read_delayed_var <= 127)) && (__unbuffered_p0_EAX$read_delayed_var == & y)) && ((y == 0 || y == 1) || y == 2)) && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2) [2024-02-07 14:52:07,054 INFO L76 edCorrectnessWitness]: Location invariant before [L765-L765] weak$$choice0 == (_Bool)0 || weak$$choice0 == (_Bool)1 [2024-02-07 14:52:07,054 INFO L76 edCorrectnessWitness]: Location invariant before [L776-L776] y$r_buff1_thd1 == (_Bool)0 [2024-02-07 14:52:07,054 INFO L76 edCorrectnessWitness]: Location invariant before [L834-L834] y$w_buff1_used == (_Bool)0 [2024-02-07 14:52:07,055 INFO L76 edCorrectnessWitness]: Location invariant before [L870-L870] y$r_buff1_thd0 == (_Bool)0 [2024-02-07 14:52:07,055 INFO L76 edCorrectnessWitness]: Location invariant before [L862-L862] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 14:52:07,055 INFO L76 edCorrectnessWitness]: Location invariant before [L818-L818] y$r_buff1_thd3 == (_Bool)0 [2024-02-07 14:52:07,055 INFO L76 edCorrectnessWitness]: Location invariant before [L869-L869] y$w_buff1_used == (_Bool)0 [2024-02-07 14:52:07,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:52:07,312 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_power.oepc.i[995,1008] [2024-02-07 14:52:07,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:52:07,518 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 14:52:07,555 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_power.oepc.i[995,1008] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:52:07,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:52:07,731 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:52:07,732 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:52:07 WrapperNode [2024-02-07 14:52:07,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:52:07,733 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:52:07,733 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:52:07,733 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:52:07,739 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 07.02 02:52:07" (1/1) ... [2024-02-07 14:52:07,755 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 07.02 02:52:07" (1/1) ... [2024-02-07 14:52:07,788 INFO L138 Inliner]: procedures = 177, calls = 132, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 260 [2024-02-07 14:52:07,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:52:07,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:52:07,790 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:52:07,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:52:07,803 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:52:07" (1/1) ... [2024-02-07 14:52:07,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:52:07" (1/1) ... [2024-02-07 14:52:07,808 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:52:07" (1/1) ... [2024-02-07 14:52:07,848 INFO L175 MemorySlicer]: Split 75 memory accesses to 6 slices as follows [2, 1, 1, 69, 1, 1]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 0, 1, 0, 0]. The 13 writes are split as follows [0, 1, 1, 9, 1, 1]. [2024-02-07 14:52:07,861 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:52:07" (1/1) ... [2024-02-07 14:52:07,862 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:52:07" (1/1) ... [2024-02-07 14:52:07,888 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:52:07" (1/1) ... [2024-02-07 14:52:07,891 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:52:07" (1/1) ... [2024-02-07 14:52:07,894 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:52:07" (1/1) ... [2024-02-07 14:52:07,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:52:07" (1/1) ... [2024-02-07 14:52:07,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:52:07,918 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:52:07,918 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:52:07,918 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:52:07,919 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:52:07" (1/1) ... [2024-02-07 14:52:07,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:52:07,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:52:07,985 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) [2024-02-07 14:52:07,999 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 [2024-02-07 14:52:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:52:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:52:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:52:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:52:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:52:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 14:52:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:52:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:52:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:52:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:52:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:52:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 14:52:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 14:52:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:52:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:52:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:52:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-07 14:52:08,069 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-07 14:52:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-07 14:52:08,069 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-07 14:52:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-02-07 14:52:08,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-02-07 14:52:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-02-07 14:52:08,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-02-07 14:52:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:52:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:52:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:52:08,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:52:08,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:52:08,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 14:52:08,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 14:52:08,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:52:08,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:52:08,074 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:52:08,219 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:52:08,222 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:52:08,892 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:52:08,892 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:52:09,789 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:52:09,790 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 14:52:09,790 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:52:09 BoogieIcfgContainer [2024-02-07 14:52:09,790 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:52:09,792 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:52:09,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:52:09,796 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:52:09,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:52:06" (1/4) ... [2024-02-07 14:52:09,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336a7252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:52:09, skipping insertion in model container [2024-02-07 14:52:09,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:52:06" (2/4) ... [2024-02-07 14:52:09,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336a7252 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:52:09, skipping insertion in model container [2024-02-07 14:52:09,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:52:07" (3/4) ... [2024-02-07 14:52:09,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336a7252 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:52:09, skipping insertion in model container [2024-02-07 14:52:09,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:52:09" (4/4) ... [2024-02-07 14:52:09,801 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_power.oepc.i [2024-02-07 14:52:09,819 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:52:09,819 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2024-02-07 14:52:09,820 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:52:09,984 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 14:52:10,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 94 transitions, 204 flow [2024-02-07 14:52:10,094 INFO L124 PetriNetUnfolderBase]: 1/90 cut-off events. [2024-02-07 14:52:10,095 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:52:10,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 90 events. 1/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 329 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2024-02-07 14:52:10,100 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 94 transitions, 204 flow [2024-02-07 14:52:10,105 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 90 transitions, 192 flow [2024-02-07 14:52:10,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:52:10,120 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;@7e6b88df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:52:10,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2024-02-07 14:52:10,123 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:52:10,123 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-07 14:52:10,124 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:52:10,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:52:10,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-07 14:52:10,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 76 more)] === [2024-02-07 14:52:10,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:52:10,130 INFO L85 PathProgramCache]: Analyzing trace with hash 39868, now seen corresponding path program 1 times [2024-02-07 14:52:10,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:52:10,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257221627] [2024-02-07 14:52:10,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:52:10,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:52:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:52:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:52:10,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:52:10,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257221627] [2024-02-07 14:52:10,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257221627] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:52:10,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:52:10,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:52:10,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794340769] [2024-02-07 14:52:10,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:52:10,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:52:10,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:52:10,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:52:10,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:52:10,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 94 [2024-02-07 14:52:10,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 90 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-02-07 14:52:10,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:52:10,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 94 [2024-02-07 14:52:10,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:52:40,583 INFO L124 PetriNetUnfolderBase]: 162194/227441 cut-off events. [2024-02-07 14:52:40,583 INFO L125 PetriNetUnfolderBase]: For 372/372 co-relation queries the response was YES. [2024-02-07 14:52:41,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438935 conditions, 227441 events. 162194/227441 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 9610. Compared 1860837 event pairs, 162194 based on Foata normal form. 2700/138129 useless extension candidates. Maximal degree in co-relation 438921. Up to 210466 conditions per place. [2024-02-07 14:52:42,130 INFO L140 encePairwiseOnDemand]: 68/94 looper letters, 49 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2024-02-07 14:52:42,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 65 transitions, 242 flow [2024-02-07 14:52:42,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:52:42,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:52:42,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-02-07 14:52:42,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-02-07 14:52:42,151 INFO L175 Difference]: Start difference. First operand has 102 places, 90 transitions, 192 flow. Second operand 3 states and 132 transitions. [2024-02-07 14:52:42,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 65 transitions, 242 flow [2024-02-07 14:52:42,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 65 transitions, 238 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 14:52:42,180 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 140 flow [2024-02-07 14:52:42,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2024-02-07 14:52:42,185 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -26 predicate places. [2024-02-07 14:52:42,186 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 140 flow [2024-02-07 14:52:42,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-02-07 14:52:42,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:52:42,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:52:42,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:52:42,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 76 more)] === [2024-02-07 14:52:42,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:52:42,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1189052182, now seen corresponding path program 1 times [2024-02-07 14:52:42,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:52:42,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753087882] [2024-02-07 14:52:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:52:42,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:52:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:52:42,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:52:42,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:52:42,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753087882] [2024-02-07 14:52:42,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753087882] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:52:42,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:52:42,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:52:42,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972292736] [2024-02-07 14:52:42,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:52:42,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:52:42,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:52:42,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:52:42,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:52:42,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 94 [2024-02-07 14:52:42,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-02-07 14:52:42,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:52:42,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 94 [2024-02-07 14:52:42,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand