./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/11_fmaxsymopt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 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-ext/11_fmaxsymopt.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/11_fmaxsymopt.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-59af5db-m [2024-02-02 09:11:58,523 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:11:58,585 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:11:58,589 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:11:58,590 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:11:58,625 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:11:58,626 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:11:58,626 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:11:58,627 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:11:58,630 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:11:58,630 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:11:58,630 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:11:58,631 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:11:58,632 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:11:58,632 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:11:58,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:11:58,633 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:11:58,633 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:11:58,633 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:11:58,633 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:11:58,634 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:11:58,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:11:58,634 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:11:58,634 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:11:58,634 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:11:58,635 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:11:58,635 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:11:58,635 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:11:58,636 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:11:58,644 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:11:58,645 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:11:58,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:11:58,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:11:58,646 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:11:58,646 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:11:58,646 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:11:58,646 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:11:58,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:11:58,647 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:11:58,647 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:11:58,647 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:11:58,647 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:11:58,647 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:11:58,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:11:58,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:11:58,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:11:58,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:11:58,883 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:11:58,883 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:11:58,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/11_fmaxsymopt.yml/witness.yml [2024-02-02 09:11:58,998 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:11:58,998 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:11:58,998 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i [2024-02-02 09:11:59,950 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:12:00,172 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:12:00,173 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i [2024-02-02 09:12:00,185 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/540f7dc6c/21c847e693904ff7a8a2d36a02c763a2/FLAG9d7d1eafe [2024-02-02 09:12:00,195 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/540f7dc6c/21c847e693904ff7a8a2d36a02c763a2 [2024-02-02 09:12:00,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:12:00,199 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:12:00,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:12:00,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:12:00,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:12:00,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:58" (1/2) ... [2024-02-02 09:12:00,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@463fe634 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:12:00, skipping insertion in model container [2024-02-02 09:12:00,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:58" (1/2) ... [2024-02-02 09:12:00,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@160e0fe9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:12:00, skipping insertion in model container [2024-02-02 09:12:00,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:12:00" (2/2) ... [2024-02-02 09:12:00,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@463fe634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:00, skipping insertion in model container [2024-02-02 09:12:00,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:12:00" (2/2) ... [2024-02-02 09:12:00,209 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:12:00,295 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:12:00,296 INFO L101 nessWitnessExtractor]: Location invariant before [L704-L704] ((((((((((((4294967296LL + (long long )i) + (long long )my_max >= 0LL) && ((4294967296LL + (long long )e) + (long long )i >= 0LL)) && ((4294967296LL + (long long )e) + (long long )my_max >= 0LL)) && ((4294967295LL - (long long )i) + (long long )my_max >= 0LL)) && ((4294967295LL - (long long )e) + (long long )i >= 0LL)) && ((4294967295LL - (long long )e) + (long long )my_max >= 0LL)) && ((4294967295LL + (long long )i) - (long long )my_max >= 0LL)) && ((4294967295LL + (long long )e) - (long long )i >= 0LL)) && ((4294967295LL + (long long )e) - (long long )my_max >= 0LL)) && ((4294967294LL - (long long )i) - (long long )my_max >= 0LL)) && ((4294967294LL - (long long )e) - (long long )i >= 0LL)) && ((4294967294LL - (long long )e) - (long long )my_max >= 0LL) [2024-02-02 09:12:00,297 INFO L101 nessWitnessExtractor]: Loop invariant at [L705-L711] (((((offset <= 2147483645 && (0LL - (long long )e) + (long long )my_max >= 0LL) && e == 0) && my_max == 0) && (((((-2147483646 <= i && (2LL - (long long )i) + (long long )offset >= 0LL) && (-2LL + (long long )i) - (long long )offset >= 0LL) || (((-2147483647 <= i && i <= 2147483646) && (1LL - (long long )i) + (long long )offset >= 0LL) && (-1LL + (long long )i) - (long long )offset >= 0LL)) || (((((-2147483647 <= i && (4294967294LL + (long long )e) + (long long )my_max >= 0LL) && (1LL - (long long )i) + (long long )offset >= 0LL) && (-1LL + (long long )i) - (long long )offset >= 0LL) && (long long )e - (long long )my_max >= 0LL) && e == my_max)) || ((((((i <= 2147483646 && (4294967294LL + (long long )e) + (long long )my_max >= 0LL) && (0LL - (long long )i) + (long long )offset >= 0LL) && (long long )i - (long long )offset >= 0LL) && (long long )e - (long long )my_max >= 0LL) && offset == i) && e == my_max))) || (((((((((4294967296LL + (long long )e) + (long long )my_max >= 0LL && (0LL - (long long )i) + (long long )offset >= 0LL) && (4294967295LL - (long long )e) + (long long )my_max >= 0LL) && (-1LL - (long long )e) - (long long )my_max >= 0LL) && (long long )i - (long long )offset >= 0LL) && (long long )e - (long long )my_max >= 0LL) && (-0x7FFFFFFF-1) == my_max) && offset == i) && my_max == (-0x7FFFFFFF-1))) || ((((((((((((((4294967296LL + (long long )i) + (long long )my_max >= 0LL && (4294967296LL + (long long )e) + (long long )i >= 0LL) && (4294967296LL + (long long )e) + (long long )my_max >= 0LL) && (4294967295LL - (long long )i) + (long long )my_max >= 0LL) && (4294967295LL - (long long )e) + (long long )i >= 0LL) && (4294967295LL - (long long )e) + (long long )my_max >= 0LL) && (4294967295LL + (long long )e) - (long long )i >= 0LL) && (-1LL - (long long )i) - (long long )my_max >= 0LL) && (-1LL - (long long )e) - (long long )my_max >= 0LL) && (4294967294LL - (long long )e) - (long long )i >= 0LL) && (long long )i - (long long )my_max >= 0LL) && (long long )e - (long long )my_max >= 0LL) && (-0x7FFFFFFF-1) == my_max) && my_max == (-0x7FFFFFFF-1)) [2024-02-02 09:12:00,297 INFO L101 nessWitnessExtractor]: Location invariant before [L718-L718] ((((((-2147483646 <= i) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0) [2024-02-02 09:12:00,297 INFO L101 nessWitnessExtractor]: Location invariant before [L714-L716] ((((((-2147483646 <= i) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0) [2024-02-02 09:12:00,297 INFO L101 nessWitnessExtractor]: Location invariant before [L710-L710] (((((offset <= 2147483645) && (i <= 2147483646)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && (e == 0)) && (my_max == 0)) && (((-2147483647 <= i && (1LL - (long long )i) + (long long )offset >= 0LL) && (-1LL + (long long )i) - (long long )offset >= 0LL) || ((((((4294967294LL + (long long )e) + (long long )my_max >= 0LL && (0LL - (long long )i) + (long long )offset >= 0LL) && (long long )i - (long long )offset >= 0LL) && (long long )e - (long long )my_max >= 0LL) && offset == i) && e == my_max)) [2024-02-02 09:12:00,297 INFO L101 nessWitnessExtractor]: Location invariant before [L708-L708] (((((((((offset <= 2147483645) && (i <= 2147483646)) && ((4294967295LL + (long long )e) + (long long )my_max >= 0LL)) && ((0LL - (long long )i) + (long long )offset >= 0LL)) && ((-1LL + (long long )e) - (long long )my_max >= 0LL)) && ((long long )i - (long long )offset >= 0LL)) && ((-0x7FFFFFFF-1) == my_max)) && (offset == i)) && (e == 0)) && (my_max == (-0x7FFFFFFF-1)) [2024-02-02 09:12:00,297 INFO L101 nessWitnessExtractor]: Location invariant after [L695-L699] (int )m == 0 [2024-02-02 09:12:00,298 INFO L101 nessWitnessExtractor]: Location invariant before [L727-L727] (unsigned long )arg == 0UL [2024-02-02 09:12:00,298 INFO L101 nessWitnessExtractor]: Location invariant before [L720-L720] (((((((((((((-2147483646 <= i) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0)) && (-2147483646 <= i)) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0) [2024-02-02 09:12:00,298 INFO L101 nessWitnessExtractor]: Location invariant before [L706-L706] (((offset <= 2147483645) && (i <= 2147483646)) && ((long long )e - (long long )my_max >= 0LL)) && ((((((((-2147483647 <= i && (4294967294LL + (long long )e) + (long long )my_max >= 0LL) && (0LL - (long long )e) + (long long )my_max >= 0LL) && (1LL - (long long )i) + (long long )offset >= 0LL) && (-1LL + (long long )i) - (long long )offset >= 0LL) && e == 0) && e == my_max) && my_max == 0) || ((((((((4294967296LL + (long long )e) + (long long )my_max >= 0LL && (0LL - (long long )i) + (long long )offset >= 0LL) && (4294967295LL - (long long )e) + (long long )my_max >= 0LL) && (-1LL - (long long )e) - (long long )my_max >= 0LL) && (long long )i - (long long )offset >= 0LL) && (-0x7FFFFFFF-1) == my_max) && offset == i) && my_max == (-0x7FFFFFFF-1))) [2024-02-02 09:12:00,298 INFO L101 nessWitnessExtractor]: Location invariant before [L724-L724] (unsigned long )arg == 0UL [2024-02-02 09:12:00,298 INFO L101 nessWitnessExtractor]: Location invariant before [L715-L715] ((((((-2147483646 <= i) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0) [2024-02-02 09:12:00,298 INFO L101 nessWitnessExtractor]: Location invariant before [L710-L710] (((((offset <= 2147483645) && (i <= 2147483646)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && (e == 0)) && (my_max == 0)) && (((-2147483647 <= i && (1LL - (long long )i) + (long long )offset >= 0LL) && (-1LL + (long long )i) - (long long )offset >= 0LL) || ((((((4294967294LL + (long long )e) + (long long )my_max >= 0LL && (0LL - (long long )i) + (long long )offset >= 0LL) && (long long )i - (long long )offset >= 0LL) && (long long )e - (long long )my_max >= 0LL) && offset == i) && e == my_max)) [2024-02-02 09:12:00,298 INFO L101 nessWitnessExtractor]: Location invariant after [L690-L694] (int )m == 1 [2024-02-02 09:12:00,299 INFO L101 nessWitnessExtractor]: Location invariant before [L726-L726] (unsigned long )arg == 0UL [2024-02-02 09:12:00,299 INFO L101 nessWitnessExtractor]: Location invariant before [L719-L719] ((((((-2147483646 <= i) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0) [2024-02-02 09:12:00,299 INFO L101 nessWitnessExtractor]: Location invariant after [L701-L722] ((((((-2147483646 <= i) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0) [2024-02-02 09:12:00,299 INFO L101 nessWitnessExtractor]: Location invariant before [L725-L725] ((offset <= 2147483646) && (offset % 2 == 0)) && ((unsigned long )arg == 0UL) [2024-02-02 09:12:00,299 INFO L101 nessWitnessExtractor]: Location invariant before [L707-L709] (((offset <= 2147483645) && (i <= 2147483646)) && (e == 0)) && ((((-2147483647 <= i && (1LL - (long long )i) + (long long )offset >= 0LL) && (-1LL + (long long )i) - (long long )offset >= 0LL) && my_max == 0) || (((((0LL - (long long )i) + (long long )offset >= 0LL && (long long )i - (long long )offset >= 0LL) && (-0x7FFFFFFF-1) == my_max) && offset == i) && my_max == (-0x7FFFFFFF-1))) [2024-02-02 09:12:00,299 INFO L101 nessWitnessExtractor]: Location invariant before [L712-L712] ((((((-2147483646 <= i) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0) [2024-02-02 09:12:00,300 INFO L101 nessWitnessExtractor]: Location invariant before [L721-L721] ((((((-2147483646 <= i) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0) [2024-02-02 09:12:00,300 INFO L101 nessWitnessExtractor]: Location invariant before [L720-L720] (((((((((((((-2147483646 <= i) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0)) && (-2147483646 <= i)) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0) [2024-02-02 09:12:00,340 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:12:00,656 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-ext/11_fmaxsymopt.i[30570,30583] [2024-02-02 09:12:00,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:12:00,673 INFO L202 MainTranslator]: Completed pre-run [2024-02-02 09:12:00,695 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_atomic_acquire() { assume_abort_if_not(m==0); m = 1; } with a witness entry [2024-02-02 09:12:00,697 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_atomic_release() { assume_abort_if_not(m==1); m = 0; } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:12:00,731 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:12:00,745 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-ext/11_fmaxsymopt.i[30570,30583] Start Parsing Local [2024-02-02 09:12:00,748 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local [2024-02-02 09:12:00,750 WARN L424 MainDispatcher]: Unable to annotate inline void findMax(int offset){ int i; int e; int my_max = 0x80000000; for(i = offset; i < offset+2; i++) { e = storage[i]; if(e > my_max) { my_max = e; } { if(!(e <= my_max)) { goto ERROR; } }; } __VERIFIER_atomic_acquire(); { if(my_max > max) { max = my_max; } } __VERIFIER_atomic_release(); __VERIFIER_atomic_acquire(); { if(!(my_max <= max)) { ERROR: {reach_error();abort();}(void)0; } }; __VERIFIER_atomic_release(); } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:12:00,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:12:00,778 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:12:00,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:00 WrapperNode [2024-02-02 09:12:00,779 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:12:00,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:12:00,780 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:12:00,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:12:00,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:00" (1/1) ... [2024-02-02 09:12:00,794 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:00" (1/1) ... [2024-02-02 09:12:00,821 INFO L138 Inliner]: procedures = 171, calls = 27, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 126 [2024-02-02 09:12:00,822 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:12:00,822 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:12:00,822 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:12:00,823 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:12:00,836 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:00" (1/1) ... [2024-02-02 09:12:00,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:00" (1/1) ... [2024-02-02 09:12:00,840 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:00" (1/1) ... [2024-02-02 09:12:00,857 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 8, 1]. 73 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-02 09:12:00,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:00" (1/1) ... [2024-02-02 09:12:00,858 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:00" (1/1) ... [2024-02-02 09:12:00,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:00" (1/1) ... [2024-02-02 09:12:00,873 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:00" (1/1) ... [2024-02-02 09:12:00,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:00" (1/1) ... [2024-02-02 09:12:00,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:00" (1/1) ... [2024-02-02 09:12:00,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:12:00,880 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:12:00,880 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:12:00,880 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:12:00,881 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:00" (1/1) ... [2024-02-02 09:12:00,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:12:00,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:12:00,917 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) [2024-02-02 09:12:00,919 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 [2024-02-02 09:12:00,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-02 09:12:00,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-02 09:12:00,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-02 09:12:00,948 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-02-02 09:12:00,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-02-02 09:12:00,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:12:00,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:12:00,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:12:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:12:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:12:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:12:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:12:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:12:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:12:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:12:00,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:12:00,956 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:12:01,065 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:12:01,067 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:12:01,477 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:12:01,477 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:12:01,579 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:12:01,579 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-02-02 09:12:01,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:12:01 BoogieIcfgContainer [2024-02-02 09:12:01,580 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:12:01,583 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:12:01,583 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:12:01,586 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:12:01,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:58" (1/4) ... [2024-02-02 09:12:01,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb654b5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:12:01, skipping insertion in model container [2024-02-02 09:12:01,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:12:00" (2/4) ... [2024-02-02 09:12:01,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb654b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:12:01, skipping insertion in model container [2024-02-02 09:12:01,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:00" (3/4) ... [2024-02-02 09:12:01,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb654b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:12:01, skipping insertion in model container [2024-02-02 09:12:01,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:12:01" (4/4) ... [2024-02-02 09:12:01,590 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2024-02-02 09:12:01,603 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:12:01,603 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2024-02-02 09:12:01,603 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:12:01,680 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 09:12:01,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 62 transitions, 128 flow [2024-02-02 09:12:01,745 INFO L124 PetriNetUnfolderBase]: 6/64 cut-off events. [2024-02-02 09:12:01,745 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:12:01,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 6/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 116 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-02-02 09:12:01,748 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 62 transitions, 128 flow [2024-02-02 09:12:01,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 62 transitions, 128 flow [2024-02-02 09:12:01,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:12:01,773 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;@18ad20e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:12:01,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-02-02 09:12:01,779 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:12:01,780 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2024-02-02 09:12:01,780 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:12:01,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:01,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-02 09:12:01,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-02 09:12:01,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:01,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1038594934, now seen corresponding path program 1 times [2024-02-02 09:12:01,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:01,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971180231] [2024-02-02 09:12:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:01,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:01,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:01,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:02,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971180231] [2024-02-02 09:12:02,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971180231] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:02,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:02,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:12:02,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928176795] [2024-02-02 09:12:02,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:02,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:12:02,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:02,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:12:02,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:12:02,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 62 [2024-02-02 09:12:02,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-02-02 09:12:02,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:02,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 62 [2024-02-02 09:12:02,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:02,134 INFO L124 PetriNetUnfolderBase]: 39/189 cut-off events. [2024-02-02 09:12:02,134 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:12:02,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 189 events. 39/189 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 719 event pairs, 26 based on Foata normal form. 3/151 useless extension candidates. Maximal degree in co-relation 254. Up to 79 conditions per place. [2024-02-02 09:12:02,139 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 20 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-02-02 09:12:02,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 170 flow [2024-02-02 09:12:02,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:12:02,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:12:02,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2024-02-02 09:12:02,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7634408602150538 [2024-02-02 09:12:02,151 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 128 flow. Second operand 3 states and 142 transitions. [2024-02-02 09:12:02,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 170 flow [2024-02-02 09:12:02,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 61 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-02 09:12:02,158 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 136 flow [2024-02-02 09:12:02,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2024-02-02 09:12:02,163 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2024-02-02 09:12:02,163 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 136 flow [2024-02-02 09:12:02,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-02-02 09:12:02,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:02,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:02,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:12:02,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-02 09:12:02,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:02,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2090479855, now seen corresponding path program 1 times [2024-02-02 09:12:02,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:02,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761362644] [2024-02-02 09:12:02,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:02,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:02,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:02,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761362644] [2024-02-02 09:12:02,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761362644] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-02 09:12:02,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578642493] [2024-02-02 09:12:02,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:02,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:02,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:12:02,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:12:02,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-02 09:12:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:02,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-02 09:12:02,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:12:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:02,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-02 09:12:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:02,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578642493] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-02 09:12:02,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-02 09:12:02,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-02-02 09:12:02,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497748788] [2024-02-02 09:12:02,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-02 09:12:02,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:12:02,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:02,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:12:02,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:12:02,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 62 [2024-02-02 09:12:02,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 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) [2024-02-02 09:12:02,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:02,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 62 [2024-02-02 09:12:02,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:02,510 INFO L124 PetriNetUnfolderBase]: 39/192 cut-off events. [2024-02-02 09:12:02,510 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:12:02,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 192 events. 39/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 719 event pairs, 26 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 277. Up to 79 conditions per place. [2024-02-02 09:12:02,511 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 20 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2024-02-02 09:12:02,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 198 flow [2024-02-02 09:12:02,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:12:02,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:12:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 262 transitions. [2024-02-02 09:12:02,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7043010752688172 [2024-02-02 09:12:02,514 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 136 flow. Second operand 6 states and 262 transitions. [2024-02-02 09:12:02,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 198 flow [2024-02-02 09:12:02,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 194 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-02 09:12:02,515 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 168 flow [2024-02-02 09:12:02,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-02-02 09:12:02,516 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 9 predicate places. [2024-02-02 09:12:02,516 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 168 flow [2024-02-02 09:12:02,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 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) [2024-02-02 09:12:02,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:02,517 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:02,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-02-02 09:12:02,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:02,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-02 09:12:02,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:02,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1168162250, now seen corresponding path program 2 times [2024-02-02 09:12:02,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:02,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5392218] [2024-02-02 09:12:02,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:02,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:02,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:02,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5392218] [2024-02-02 09:12:02,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5392218] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-02 09:12:02,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632294241] [2024-02-02 09:12:02,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-02 09:12:02,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:02,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:12:02,823 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:12:02,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-02 09:12:02,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-02 09:12:02,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-02 09:12:02,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-02 09:12:02,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:12:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-02-02 09:12:02,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-02 09:12:02,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632294241] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:02,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-02 09:12:02,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-02-02 09:12:02,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016486001] [2024-02-02 09:12:02,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:02,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:12:02,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:02,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:12:02,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:12:02,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 62 [2024-02-02 09:12:02,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-02-02 09:12:02,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:02,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 62 [2024-02-02 09:12:02,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:03,009 INFO L124 PetriNetUnfolderBase]: 41/190 cut-off events. [2024-02-02 09:12:03,010 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-02 09:12:03,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 190 events. 41/190 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 706 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 271. Up to 76 conditions per place. [2024-02-02 09:12:03,011 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 27 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-02-02 09:12:03,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 226 flow [2024-02-02 09:12:03,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:12:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:12:03,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-02-02 09:12:03,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2024-02-02 09:12:03,014 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 168 flow. Second operand 4 states and 168 transitions. [2024-02-02 09:12:03,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 226 flow [2024-02-02 09:12:03,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 64 transitions, 212 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-02-02 09:12:03,016 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 152 flow [2024-02-02 09:12:03,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-02-02 09:12:03,016 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2024-02-02 09:12:03,017 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 152 flow [2024-02-02 09:12:03,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-02-02 09:12:03,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:03,017 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-02-02 09:12:03,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-02 09:12:03,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-02-02 09:12:03,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-02 09:12:03,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:03,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1853239789, now seen corresponding path program 1 times [2024-02-02 09:12:03,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:03,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446946589] [2024-02-02 09:12:03,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:03,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-02 09:12:03,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:03,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446946589] [2024-02-02 09:12:03,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446946589] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-02 09:12:03,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751580804] [2024-02-02 09:12:03,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:03,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:03,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:12:03,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:12:03,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-02 09:12:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:03,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-02 09:12:03,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:12:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-02 09:12:03,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-02 09:12:03,453 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-02 09:12:03,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751580804] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-02 09:12:03,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-02 09:12:03,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2024-02-02 09:12:03,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052185523] [2024-02-02 09:12:03,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-02 09:12:03,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:12:03,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:03,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:12:03,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:12:03,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 62 [2024-02-02 09:12:03,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 152 flow. Second operand has 9 states, 9 states have (on average 40.55555555555556) internal successors, (365), 9 states have internal predecessors, (365), 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) [2024-02-02 09:12:03,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:03,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 62 [2024-02-02 09:12:03,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:03,517 INFO L124 PetriNetUnfolderBase]: 39/187 cut-off events. [2024-02-02 09:12:03,517 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-02-02 09:12:03,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 187 events. 39/187 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 689 event pairs, 26 based on Foata normal form. 2/149 useless extension candidates. Maximal degree in co-relation 263. Up to 79 conditions per place. [2024-02-02 09:12:03,518 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 20 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2024-02-02 09:12:03,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 63 transitions, 218 flow [2024-02-02 09:12:03,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:12:03,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:12:03,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 341 transitions. [2024-02-02 09:12:03,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-02-02 09:12:03,520 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 152 flow. Second operand 8 states and 341 transitions. [2024-02-02 09:12:03,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 63 transitions, 218 flow [2024-02-02 09:12:03,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 63 transitions, 215 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:12:03,522 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 185 flow [2024-02-02 09:12:03,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=185, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-02-02 09:12:03,523 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 15 predicate places. [2024-02-02 09:12:03,523 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 185 flow [2024-02-02 09:12:03,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 40.55555555555556) internal successors, (365), 9 states have internal predecessors, (365), 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) [2024-02-02 09:12:03,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:03,524 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 2, 1, 1, 1, 1, 1] [2024-02-02 09:12:03,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-02 09:12:03,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:03,736 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-02 09:12:03,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:03,737 INFO L85 PathProgramCache]: Analyzing trace with hash -617051827, now seen corresponding path program 2 times [2024-02-02 09:12:03,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:03,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499316835] [2024-02-02 09:12:03,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:03,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:12:03,759 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 09:12:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:12:03,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 09:12:03,797 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 09:12:03,798 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 39 remaining) [2024-02-02 09:12:03,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 39 remaining) [2024-02-02 09:12:03,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 39 remaining) [2024-02-02 09:12:03,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 39 remaining) [2024-02-02 09:12:03,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 39 remaining) [2024-02-02 09:12:03,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 39 remaining) [2024-02-02 09:12:03,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 39 remaining) [2024-02-02 09:12:03,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 39 remaining) [2024-02-02 09:12:03,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 39 remaining) [2024-02-02 09:12:03,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 39 remaining) [2024-02-02 09:12:03,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 39 remaining) [2024-02-02 09:12:03,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 39 remaining) [2024-02-02 09:12:03,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 39 remaining) [2024-02-02 09:12:03,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 39 remaining) [2024-02-02 09:12:03,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONERROR_FUNCTION (24 of 39 remaining) [2024-02-02 09:12:03,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 39 remaining) [2024-02-02 09:12:03,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 39 remaining) [2024-02-02 09:12:03,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 39 remaining) [2024-02-02 09:12:03,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 39 remaining) [2024-02-02 09:12:03,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 39 remaining) [2024-02-02 09:12:03,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 39 remaining) [2024-02-02 09:12:03,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 39 remaining) [2024-02-02 09:12:03,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 39 remaining) [2024-02-02 09:12:03,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 39 remaining) [2024-02-02 09:12:03,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 39 remaining) [2024-02-02 09:12:03,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 39 remaining) [2024-02-02 09:12:03,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 39 remaining) [2024-02-02 09:12:03,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 39 remaining) [2024-02-02 09:12:03,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 39 remaining) [2024-02-02 09:12:03,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 39 remaining) [2024-02-02 09:12:03,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 39 remaining) [2024-02-02 09:12:03,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 39 remaining) [2024-02-02 09:12:03,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 39 remaining) [2024-02-02 09:12:03,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONERROR_FUNCTION (5 of 39 remaining) [2024-02-02 09:12:03,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 39 remaining) [2024-02-02 09:12:03,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 39 remaining) [2024-02-02 09:12:03,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 39 remaining) [2024-02-02 09:12:03,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 39 remaining) [2024-02-02 09:12:03,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 39 remaining) [2024-02-02 09:12:03,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:12:03,810 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1] [2024-02-02 09:12:03,815 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-02 09:12:03,815 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-02 09:12:03,885 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 09:12:03,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 117 transitions, 244 flow [2024-02-02 09:12:03,897 INFO L124 PetriNetUnfolderBase]: 11/122 cut-off events. [2024-02-02 09:12:03,897 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-02 09:12:03,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 122 events. 11/122 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 428 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2024-02-02 09:12:03,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 117 transitions, 244 flow [2024-02-02 09:12:03,899 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 117 transitions, 244 flow [2024-02-02 09:12:03,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:12:03,900 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;@18ad20e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:12:03,900 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2024-02-02 09:12:03,901 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:12:03,902 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2024-02-02 09:12:03,902 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-02 09:12:03,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:03,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-02 09:12:03,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:12:03,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:03,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1872244256, now seen corresponding path program 1 times [2024-02-02 09:12:03,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:03,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866867111] [2024-02-02 09:12:03,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:03,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:03,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:03,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866867111] [2024-02-02 09:12:03,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866867111] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:03,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:03,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:12:03,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369971782] [2024-02-02 09:12:03,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:03,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:12:03,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:03,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:12:03,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:12:03,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 117 [2024-02-02 09:12:03,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 117 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2024-02-02 09:12:03,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:03,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 117 [2024-02-02 09:12:03,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:04,302 INFO L124 PetriNetUnfolderBase]: 1353/3833 cut-off events. [2024-02-02 09:12:04,303 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-02-02 09:12:04,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5850 conditions, 3833 events. 1353/3833 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 32731 event pairs, 1064 based on Foata normal form. 111/3178 useless extension candidates. Maximal degree in co-relation 5167. Up to 1969 conditions per place. [2024-02-02 09:12:04,323 INFO L140 encePairwiseOnDemand]: 111/117 looper letters, 36 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2024-02-02 09:12:04,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 115 transitions, 316 flow [2024-02-02 09:12:04,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:12:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:12:04,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2024-02-02 09:12:04,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-02-02 09:12:04,325 INFO L175 Difference]: Start difference. First operand has 111 places, 117 transitions, 244 flow. Second operand 3 states and 273 transitions. [2024-02-02 09:12:04,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 115 transitions, 316 flow [2024-02-02 09:12:04,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 115 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-02 09:12:04,327 INFO L231 Difference]: Finished difference. Result has 113 places, 115 transitions, 250 flow [2024-02-02 09:12:04,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=113, PETRI_TRANSITIONS=115} [2024-02-02 09:12:04,328 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 2 predicate places. [2024-02-02 09:12:04,328 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 115 transitions, 250 flow [2024-02-02 09:12:04,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2024-02-02 09:12:04,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:04,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:04,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:12:04,329 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:12:04,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:04,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2015546106, now seen corresponding path program 1 times [2024-02-02 09:12:04,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:04,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30387483] [2024-02-02 09:12:04,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:04,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:04,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:04,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:04,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30387483] [2024-02-02 09:12:04,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30387483] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-02 09:12:04,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422817715] [2024-02-02 09:12:04,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:04,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:04,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:12:04,355 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:12:04,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-02 09:12:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:04,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-02 09:12:04,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:12:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:04,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-02 09:12:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:04,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422817715] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-02 09:12:04,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-02 09:12:04,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-02-02 09:12:04,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970281260] [2024-02-02 09:12:04,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-02 09:12:04,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:12:04,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:04,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:12:04,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:12:04,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 117 [2024-02-02 09:12:04,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 115 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 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) [2024-02-02 09:12:04,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:04,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 117 [2024-02-02 09:12:04,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:04,780 INFO L124 PetriNetUnfolderBase]: 1353/3836 cut-off events. [2024-02-02 09:12:04,781 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-02-02 09:12:04,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5866 conditions, 3836 events. 1353/3836 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 32748 event pairs, 1064 based on Foata normal form. 0/3070 useless extension candidates. Maximal degree in co-relation 5853. Up to 1969 conditions per place. [2024-02-02 09:12:04,805 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 36 selfloop transitions, 5 changer transitions 0/118 dead transitions. [2024-02-02 09:12:04,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 118 transitions, 344 flow [2024-02-02 09:12:04,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:12:04,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:12:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 506 transitions. [2024-02-02 09:12:04,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7207977207977208 [2024-02-02 09:12:04,807 INFO L175 Difference]: Start difference. First operand has 113 places, 115 transitions, 250 flow. Second operand 6 states and 506 transitions. [2024-02-02 09:12:04,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 118 transitions, 344 flow [2024-02-02 09:12:04,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 118 transitions, 340 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-02 09:12:04,810 INFO L231 Difference]: Finished difference. Result has 120 places, 118 transitions, 282 flow [2024-02-02 09:12:04,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=120, PETRI_TRANSITIONS=118} [2024-02-02 09:12:04,812 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 9 predicate places. [2024-02-02 09:12:04,812 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 118 transitions, 282 flow [2024-02-02 09:12:04,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 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) [2024-02-02 09:12:04,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:04,812 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:04,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-02 09:12:05,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:05,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:12:05,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:05,026 INFO L85 PathProgramCache]: Analyzing trace with hash 602556512, now seen corresponding path program 2 times [2024-02-02 09:12:05,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:05,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248780212] [2024-02-02 09:12:05,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:05,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:05,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:05,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:05,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248780212] [2024-02-02 09:12:05,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248780212] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-02 09:12:05,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714479441] [2024-02-02 09:12:05,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-02 09:12:05,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:05,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:12:05,113 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:12:05,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-02 09:12:05,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-02 09:12:05,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-02 09:12:05,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-02 09:12:05,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:12:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-02-02 09:12:05,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-02 09:12:05,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714479441] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:05,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-02 09:12:05,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-02-02 09:12:05,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956962566] [2024-02-02 09:12:05,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:05,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:12:05,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:05,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:12:05,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:12:05,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 117 [2024-02-02 09:12:05,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 118 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2024-02-02 09:12:05,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:05,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 117 [2024-02-02 09:12:05,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:05,558 INFO L124 PetriNetUnfolderBase]: 1439/3971 cut-off events. [2024-02-02 09:12:05,558 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-02-02 09:12:05,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6154 conditions, 3971 events. 1439/3971 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 33534 event pairs, 611 based on Foata normal form. 0/3235 useless extension candidates. Maximal degree in co-relation 6119. Up to 2024 conditions per place. [2024-02-02 09:12:05,587 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 59 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2024-02-02 09:12:05,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 134 transitions, 441 flow [2024-02-02 09:12:05,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:12:05,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:12:05,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2024-02-02 09:12:05,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7521367521367521 [2024-02-02 09:12:05,589 INFO L175 Difference]: Start difference. First operand has 120 places, 118 transitions, 282 flow. Second operand 4 states and 352 transitions. [2024-02-02 09:12:05,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 134 transitions, 441 flow [2024-02-02 09:12:05,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 134 transitions, 427 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-02-02 09:12:05,593 INFO L231 Difference]: Finished difference. Result has 119 places, 115 transitions, 266 flow [2024-02-02 09:12:05,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=119, PETRI_TRANSITIONS=115} [2024-02-02 09:12:05,594 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 8 predicate places. [2024-02-02 09:12:05,594 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 115 transitions, 266 flow [2024-02-02 09:12:05,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2024-02-02 09:12:05,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:05,595 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:05,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-02 09:12:05,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:05,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:12:05,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:05,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1499383295, now seen corresponding path program 1 times [2024-02-02 09:12:05,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:05,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172076471] [2024-02-02 09:12:05,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:05,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:05,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:05,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172076471] [2024-02-02 09:12:05,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172076471] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-02 09:12:05,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971958874] [2024-02-02 09:12:05,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:05,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:05,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:12:05,873 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:12:05,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-02 09:12:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:05,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-02 09:12:05,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:12:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:05,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-02 09:12:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:05,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971958874] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-02 09:12:05,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-02 09:12:05,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2024-02-02 09:12:05,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71064431] [2024-02-02 09:12:05,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-02 09:12:05,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:12:05,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:05,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:12:05,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:12:05,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 117 [2024-02-02 09:12:05,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 115 transitions, 266 flow. Second operand has 9 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 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) [2024-02-02 09:12:05,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:05,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 117 [2024-02-02 09:12:05,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:06,338 INFO L124 PetriNetUnfolderBase]: 1353/3789 cut-off events. [2024-02-02 09:12:06,338 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-02-02 09:12:06,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5834 conditions, 3789 events. 1353/3789 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 32125 event pairs, 1064 based on Foata normal form. 2/3026 useless extension candidates. Maximal degree in co-relation 5797. Up to 1969 conditions per place. [2024-02-02 09:12:06,361 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 36 selfloop transitions, 7 changer transitions 0/117 dead transitions. [2024-02-02 09:12:06,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 117 transitions, 364 flow [2024-02-02 09:12:06,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:12:06,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:12:06,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 661 transitions. [2024-02-02 09:12:06,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7061965811965812 [2024-02-02 09:12:06,364 INFO L175 Difference]: Start difference. First operand has 119 places, 115 transitions, 266 flow. Second operand 8 states and 661 transitions. [2024-02-02 09:12:06,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 117 transitions, 364 flow [2024-02-02 09:12:06,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 117 transitions, 361 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:12:06,367 INFO L231 Difference]: Finished difference. Result has 126 places, 117 transitions, 299 flow [2024-02-02 09:12:06,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=299, PETRI_PLACES=126, PETRI_TRANSITIONS=117} [2024-02-02 09:12:06,369 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 15 predicate places. [2024-02-02 09:12:06,369 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 117 transitions, 299 flow [2024-02-02 09:12:06,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 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) [2024-02-02 09:12:06,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:06,370 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:06,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-02 09:12:06,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:06,581 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:12:06,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1278454463, now seen corresponding path program 2 times [2024-02-02 09:12:06,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:06,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801275425] [2024-02-02 09:12:06,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:06,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:12:06,595 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 09:12:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:12:06,605 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 09:12:06,606 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 09:12:06,606 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 58 remaining) [2024-02-02 09:12:06,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 58 remaining) [2024-02-02 09:12:06,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 58 remaining) [2024-02-02 09:12:06,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 58 remaining) [2024-02-02 09:12:06,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 58 remaining) [2024-02-02 09:12:06,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 58 remaining) [2024-02-02 09:12:06,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 58 remaining) [2024-02-02 09:12:06,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 58 remaining) [2024-02-02 09:12:06,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 58 remaining) [2024-02-02 09:12:06,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 58 remaining) [2024-02-02 09:12:06,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 58 remaining) [2024-02-02 09:12:06,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 58 remaining) [2024-02-02 09:12:06,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 58 remaining) [2024-02-02 09:12:06,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 58 remaining) [2024-02-02 09:12:06,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONERROR_FUNCTION (43 of 58 remaining) [2024-02-02 09:12:06,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 58 remaining) [2024-02-02 09:12:06,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 58 remaining) [2024-02-02 09:12:06,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 58 remaining) [2024-02-02 09:12:06,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 58 remaining) [2024-02-02 09:12:06,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 58 remaining) [2024-02-02 09:12:06,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 58 remaining) [2024-02-02 09:12:06,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 58 remaining) [2024-02-02 09:12:06,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 58 remaining) [2024-02-02 09:12:06,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 58 remaining) [2024-02-02 09:12:06,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 58 remaining) [2024-02-02 09:12:06,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 58 remaining) [2024-02-02 09:12:06,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 58 remaining) [2024-02-02 09:12:06,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 58 remaining) [2024-02-02 09:12:06,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 58 remaining) [2024-02-02 09:12:06,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 58 remaining) [2024-02-02 09:12:06,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 58 remaining) [2024-02-02 09:12:06,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 58 remaining) [2024-02-02 09:12:06,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 58 remaining) [2024-02-02 09:12:06,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 58 remaining) [2024-02-02 09:12:06,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONERROR_FUNCTION (23 of 58 remaining) [2024-02-02 09:12:06,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 58 remaining) [2024-02-02 09:12:06,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 58 remaining) [2024-02-02 09:12:06,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 58 remaining) [2024-02-02 09:12:06,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 58 remaining) [2024-02-02 09:12:06,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 58 remaining) [2024-02-02 09:12:06,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 58 remaining) [2024-02-02 09:12:06,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 58 remaining) [2024-02-02 09:12:06,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 58 remaining) [2024-02-02 09:12:06,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 58 remaining) [2024-02-02 09:12:06,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 58 remaining) [2024-02-02 09:12:06,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 58 remaining) [2024-02-02 09:12:06,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 58 remaining) [2024-02-02 09:12:06,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 58 remaining) [2024-02-02 09:12:06,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 58 remaining) [2024-02-02 09:12:06,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 58 remaining) [2024-02-02 09:12:06,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 58 remaining) [2024-02-02 09:12:06,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 58 remaining) [2024-02-02 09:12:06,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONERROR_FUNCTION (5 of 58 remaining) [2024-02-02 09:12:06,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 58 remaining) [2024-02-02 09:12:06,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 58 remaining) [2024-02-02 09:12:06,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 58 remaining) [2024-02-02 09:12:06,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 58 remaining) [2024-02-02 09:12:06,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 58 remaining) [2024-02-02 09:12:06,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-02 09:12:06,615 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1] [2024-02-02 09:12:06,619 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2024-02-02 09:12:06,619 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-02 09:12:06,632 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-02-02 09:12:06,638 INFO L503 ceAbstractionStarter]: Automizer considered 18 witness invariants [2024-02-02 09:12:06,638 INFO L504 ceAbstractionStarter]: WitnessConsidered=18 [2024-02-02 09:12:06,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:12:06 BasicIcfg [2024-02-02 09:12:06,639 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-02 09:12:06,639 INFO L158 Benchmark]: Toolchain (without parser) took 6441.09ms. Allocated memory was 151.0MB in the beginning and 339.7MB in the end (delta: 188.7MB). Free memory was 90.2MB in the beginning and 233.6MB in the end (delta: -143.4MB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. [2024-02-02 09:12:06,640 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 151.0MB. Free memory is still 117.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:12:06,640 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 151.0MB. Free memory is still 111.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:12:06,640 INFO L158 Benchmark]: CACSL2BoogieTranslator took 577.23ms. Allocated memory is still 151.0MB. Free memory was 90.0MB in the beginning and 63.1MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-02-02 09:12:06,640 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.38ms. Allocated memory is still 151.0MB. Free memory was 63.1MB in the beginning and 59.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-02 09:12:06,640 INFO L158 Benchmark]: Boogie Preprocessor took 57.04ms. Allocated memory is still 151.0MB. Free memory was 59.9MB in the beginning and 57.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:12:06,641 INFO L158 Benchmark]: RCFGBuilder took 700.68ms. Allocated memory was 151.0MB in the beginning and 216.0MB in the end (delta: 65.0MB). Free memory was 57.1MB in the beginning and 151.6MB in the end (delta: -94.5MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2024-02-02 09:12:06,641 INFO L158 Benchmark]: TraceAbstraction took 5055.85ms. Allocated memory was 216.0MB in the beginning and 339.7MB in the end (delta: 123.7MB). Free memory was 150.5MB in the beginning and 233.6MB in the end (delta: -83.1MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. [2024-02-02 09:12:06,642 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 151.0MB. Free memory is still 117.7MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.08ms. Allocated memory is still 151.0MB. Free memory is still 111.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 577.23ms. Allocated memory is still 151.0MB. Free memory was 90.0MB in the beginning and 63.1MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.38ms. Allocated memory is still 151.0MB. Free memory was 63.1MB in the beginning and 59.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.04ms. Allocated memory is still 151.0MB. Free memory was 59.9MB in the beginning and 57.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 700.68ms. Allocated memory was 151.0MB in the beginning and 216.0MB in the end (delta: 65.0MB). Free memory was 57.1MB in the beginning and 151.6MB in the end (delta: -94.5MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * TraceAbstraction took 5055.85ms. Allocated memory was 216.0MB in the beginning and 339.7MB in the end (delta: 123.7MB). Free memory was 150.5MB in the beginning and 233.6MB in the end (delta: -83.1MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 725]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L689] 0 volatile int max = 0x80000000, m = 0; [L700] 0 int storage[2*3]; [L700] 0 int storage[2*3]; [L700] 0 int storage[2*3]; [L700] 0 int storage[2*3]; [L700] 0 int storage[2*3]; [L700] 0 int storage[2*3]; [L700] 0 int storage[2*3]; [L730] 0 int i = 0; VAL [i=0, m=0, max=-2147483648, storage={3:0}] [L730] COND TRUE 0 i < 2*3 [L731] 0 storage[i] = __VERIFIER_nondet_int() [L730] 0 i++ VAL [i=1, m=0, max=-2147483648, storage={3:0}] [L730] COND TRUE 0 i < 2*3 [L731] 0 storage[i] = __VERIFIER_nondet_int() [L730] 0 i++ VAL [i=2, m=0, max=-2147483648, storage={3:0}] [L730] COND TRUE 0 i < 2*3 [L731] 0 storage[i] = __VERIFIER_nondet_int() [L730] 0 i++ VAL [i=3, m=0, max=-2147483648, storage={3:0}] [L730] COND TRUE 0 i < 2*3 [L731] 0 storage[i] = __VERIFIER_nondet_int() [L730] 0 i++ VAL [i=4, m=0, max=-2147483648, storage={3:0}] [L730] COND TRUE 0 i < 2*3 [L731] 0 storage[i] = __VERIFIER_nondet_int() [L730] 0 i++ VAL [i=5, m=0, max=-2147483648, storage={3:0}] [L730] COND TRUE 0 i < 2*3 [L731] 0 storage[i] = __VERIFIER_nondet_int() [L730] 0 i++ VAL [i=6, m=0, max=-2147483648, storage={3:0}] [L730] COND FALSE 0 !(i < 2*3) [L732] 0 pthread_t t; VAL [m=0, max=-2147483648, storage={3:0}, t={5:0}] [L733] COND TRUE 0 1 [L733] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m=0, max=-2147483648, storage={3:0}, t={5:0}] [L724] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] [L724] 1 int offset=__VERIFIER_nondet_int(); [L725] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IdentifierExpression[offset],IntegerLiteral[2147483646]],BinaryExpression[COMPEQ,BinaryExpression[ARITHMOD,IdentifierExpression[offset],IntegerLiteral[2]],IntegerLiteral[0]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]]] VAL [arg={0:0}, arg={0:0}, m=0, max=-2147483648, offset=-1, storage={3:0}] - UnprovableResult [Line: 724]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 705]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 708]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 710]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 705]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 107 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 48 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 253 IncrementalHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 6 mSDtfsCounter, 253 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=185occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 75 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 137 SizeOfPredicates, 2 NumberOfNonLiveVariables, 281 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 16/59 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 157 locations, 58 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 80 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 387 IncrementalHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 387 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=299occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 75 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 137 SizeOfPredicates, 2 NumberOfNonLiveVariables, 280 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 10/53 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-02-02 09:12:06,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE