./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/11_fmaxsymopt-pthread.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-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d25acf6 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-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/11_fmaxsymopt-pthread.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-3d25acf-m [2024-01-30 14:15:52,163 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:15:52,244 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:15:52,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:15:52,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:15:52,282 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:15:52,283 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:15:52,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:15:52,284 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:15:52,289 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:15:52,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:15:52,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:15:52,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:15:52,293 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:15:52,293 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:15:52,293 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:15:52,294 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:15:52,294 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:15:52,294 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:15:52,294 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:15:52,295 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:15:52,295 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:15:52,295 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:15:52,296 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:15:52,297 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:15:52,297 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:15:52,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:15:52,298 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:15:52,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:15:52,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:15:52,300 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:15:52,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:15:52,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:15:52,301 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:15:52,301 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:15:52,301 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:15:52,301 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:15:52,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:15:52,302 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:15:52,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:15:52,302 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:15:52,302 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:15:52,303 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:15:52,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:15:52,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:15:52,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:15:52,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:15:52,637 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:15:52,637 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:15:52,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/11_fmaxsymopt-pthread.i [2024-01-30 14:15:53,906 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:15:54,162 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:15:54,165 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/11_fmaxsymopt-pthread.i [2024-01-30 14:15:54,180 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe11448a/ff346725f1d246cebb63f31989340ca6/FLAG9b28c6c9d [2024-01-30 14:15:54,193 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe11448a/ff346725f1d246cebb63f31989340ca6 [2024-01-30 14:15:54,196 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:15:54,196 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:15:54,197 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/11_fmaxsymopt-pthread.yml/witness.yml [2024-01-30 14:15:54,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:15:54,356 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:15:54,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:15:54,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:15:54,362 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:15:54,363 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:15:54" (1/2) ... [2024-01-30 14:15:54,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa26b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:15:54, skipping insertion in model container [2024-01-30 14:15:54,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:15:54" (1/2) ... [2024-01-30 14:15:54,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c459446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:15:54, skipping insertion in model container [2024-01-30 14:15:54,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:15:54" (2/2) ... [2024-01-30 14:15:54,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa26b65 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:54, skipping insertion in model container [2024-01-30 14:15:54,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:15:54" (2/2) ... [2024-01-30 14:15:54,367 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:15:54,499 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:15:54,501 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] ((offset <= 2147483646) && (offset % 2 == 0)) && ((unsigned long )arg == 0UL) [2024-01-30 14:15:54,501 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] (((((((((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)) [2024-01-30 14:15:54,501 INFO L98 nessWitnessExtractor]: Location invariant after [L693-L714] ((((((-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) [2024-01-30 14:15:54,502 INFO L98 nessWitnessExtractor]: Loop invariant at [L697-L703] (((((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)) [2024-01-30 14:15:54,502 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] (unsigned long )arg == 0UL [2024-01-30 14:15:54,503 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L708] ((((((-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) [2024-01-30 14:15:54,503 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L701] (((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))) [2024-01-30 14:15:54,503 INFO L98 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)) && (-2147483646 <= i)) && (offset <= 2147483645)) && ((int )max <= -1)) && ((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)) && ((int )max != 0) [2024-01-30 14:15:54,503 INFO L98 nessWitnessExtractor]: Location invariant before [L716-L716] (unsigned long )arg == 0UL [2024-01-30 14:15:54,503 INFO L98 nessWitnessExtractor]: Location invariant before [L704-L704] ((((((-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) [2024-01-30 14:15:54,503 INFO L98 nessWitnessExtractor]: Location invariant before [L696-L696] ((((((((((((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) [2024-01-30 14:15:54,504 INFO L98 nessWitnessExtractor]: Location invariant before [L713-L713] (((((((-2147483646 <= i) && (0 <= (int )max)) && (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) [2024-01-30 14:15:54,504 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] (unsigned long )arg == 0UL [2024-01-30 14:15:54,504 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (((((((-2147483646 <= i) && (0 <= (int )max)) && (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) [2024-01-30 14:15:54,504 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] (((((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)) [2024-01-30 14:15:54,504 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] (((((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)) [2024-01-30 14:15:54,504 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] ((((((((-2147483646 <= i) && (offset <= 2147483645)) && ((int )max <= -1)) && ((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)) && ((int )max != 0) [2024-01-30 14:15:54,505 INFO L98 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)) && (-2147483646 <= i)) && (offset <= 2147483645)) && ((int )max <= -1)) && ((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)) && ((int )max != 0) [2024-01-30 14:15:54,505 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] ((((((-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) [2024-01-30 14:15:54,505 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] (((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))) [2024-01-30 14:15:54,547 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:15:54,884 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-pthread.i[30871,30884] [2024-01-30 14:15:54,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:15:54,913 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-30 14:15:55,001 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 [2024-01-30 14:15:55,034 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-pthread.i[30871,30884] Start Parsing Local [2024-01-30 14:15:55,039 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local [2024-01-30 14:15:55,042 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; } }; } pthread_mutex_lock(&m); { if(my_max > max) { max = my_max; } } pthread_mutex_unlock(&m); pthread_mutex_lock(&m); { if(!(my_max <= max)) { ERROR: {reach_error();abort();}(void)0; } }; pthread_mutex_unlock(&m); } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-30 14:15:55,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:15:55,084 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:15:55,084 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:55 WrapperNode [2024-01-30 14:15:55,085 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:15:55,086 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:15:55,086 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:15:55,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:15:55,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:55" (1/1) ... [2024-01-30 14:15:55,119 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:55" (1/1) ... [2024-01-30 14:15:55,159 INFO L138 Inliner]: procedures = 165, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 116 [2024-01-30 14:15:55,164 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:15:55,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:15:55,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:15:55,165 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:15:55,176 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:55" (1/1) ... [2024-01-30 14:15:55,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:55" (1/1) ... [2024-01-30 14:15:55,182 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:55" (1/1) ... [2024-01-30 14:15:55,204 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 5, 8, 1]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 6, 0]. The 2 writes are split as follows [0, 0, 1, 1]. [2024-01-30 14:15:55,207 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:55" (1/1) ... [2024-01-30 14:15:55,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:55" (1/1) ... [2024-01-30 14:15:55,221 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:55" (1/1) ... [2024-01-30 14:15:55,251 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:55" (1/1) ... [2024-01-30 14:15:55,253 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:55" (1/1) ... [2024-01-30 14:15:55,255 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:55" (1/1) ... [2024-01-30 14:15:55,258 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:15:55,259 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:15:55,260 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:15:55,260 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:15:55,277 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:55" (1/1) ... [2024-01-30 14:15:55,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:15:55,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:15:55,365 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) [2024-01-30 14:15:55,367 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 [2024-01-30 14:15:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:15:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:15:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:15:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:15:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-30 14:15:55,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-30 14:15:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:15:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:15:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:15:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:15:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-30 14:15:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:15:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:15:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:15:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:15:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:15:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:15:55,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:15:55,405 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-30 14:15:55,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:15:55,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:15:55,407 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:15:55,526 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:15:55,528 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:15:55,861 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:15:55,861 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:15:56,021 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:15:56,021 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-01-30 14:15:56,022 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:15:56 BoogieIcfgContainer [2024-01-30 14:15:56,023 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:15:56,025 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:15:56,026 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:15:56,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:15:56,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:15:54" (1/4) ... [2024-01-30 14:15:56,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6b4ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:15:56, skipping insertion in model container [2024-01-30 14:15:56,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:15:54" (2/4) ... [2024-01-30 14:15:56,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6b4ec4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:15:56, skipping insertion in model container [2024-01-30 14:15:56,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:55" (3/4) ... [2024-01-30 14:15:56,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6b4ec4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:15:56, skipping insertion in model container [2024-01-30 14:15:56,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:15:56" (4/4) ... [2024-01-30 14:15:56,031 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-pthread.i [2024-01-30 14:15:56,050 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:15:56,050 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2024-01-30 14:15:56,050 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:15:56,159 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-30 14:15:56,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 65 transitions, 134 flow [2024-01-30 14:15:56,240 INFO L124 PetriNetUnfolderBase]: 6/67 cut-off events. [2024-01-30 14:15:56,241 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:15:56,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 67 events. 6/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 122 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2024-01-30 14:15:56,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 65 transitions, 134 flow [2024-01-30 14:15:56,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 65 transitions, 134 flow [2024-01-30 14:15:56,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:15:56,268 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;@46c62efb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:15:56,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-01-30 14:15:56,280 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:15:56,280 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-01-30 14:15:56,280 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:15:56,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:56,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-30 14:15:56,283 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-01-30 14:15:56,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:56,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1317551148, now seen corresponding path program 1 times [2024-01-30 14:15:56,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:56,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983761803] [2024-01-30 14:15:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:56,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:56,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:56,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983761803] [2024-01-30 14:15:56,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983761803] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:56,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:56,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:15:56,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193071536] [2024-01-30 14:15:56,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:56,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:15:56,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:56,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:15:56,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:15:56,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 65 [2024-01-30 14:15:56,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 65 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2024-01-30 14:15:56,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:56,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 65 [2024-01-30 14:15:56,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:56,849 INFO L124 PetriNetUnfolderBase]: 39/198 cut-off events. [2024-01-30 14:15:56,849 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:15:56,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 198 events. 39/198 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 729 event pairs, 26 based on Foata normal form. 3/160 useless extension candidates. Maximal degree in co-relation 263. Up to 79 conditions per place. [2024-01-30 14:15:56,853 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 20 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-01-30 14:15:56,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 176 flow [2024-01-30 14:15:56,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:15:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:15:56,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2024-01-30 14:15:56,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7743589743589744 [2024-01-30 14:15:56,870 INFO L175 Difference]: Start difference. First operand has 62 places, 65 transitions, 134 flow. Second operand 3 states and 151 transitions. [2024-01-30 14:15:56,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 176 flow [2024-01-30 14:15:56,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 176 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-30 14:15:56,881 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 142 flow [2024-01-30 14:15:56,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-01-30 14:15:56,886 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2024-01-30 14:15:56,887 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 142 flow [2024-01-30 14:15:56,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2024-01-30 14:15:56,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:56,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:56,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:15:56,889 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-01-30 14:15:56,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:56,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2102313890, now seen corresponding path program 1 times [2024-01-30 14:15:56,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:56,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788738719] [2024-01-30 14:15:56,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:56,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:57,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:57,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:57,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788738719] [2024-01-30 14:15:57,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788738719] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-30 14:15:57,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641700318] [2024-01-30 14:15:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:57,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:15:57,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:15:57,034 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) [2024-01-30 14:15:57,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-30 14:15:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:57,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-30 14:15:57,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:15:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:57,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-30 14:15:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:57,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641700318] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-30 14:15:57,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-30 14:15:57,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-01-30 14:15:57,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968350421] [2024-01-30 14:15:57,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-30 14:15:57,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:15:57,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:57,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:15:57,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:15:57,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 65 [2024-01-30 14:15:57,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 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) [2024-01-30 14:15:57,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:57,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 65 [2024-01-30 14:15:57,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:57,295 INFO L124 PetriNetUnfolderBase]: 39/201 cut-off events. [2024-01-30 14:15:57,296 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:15:57,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 201 events. 39/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 729 event pairs, 26 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 286. Up to 79 conditions per place. [2024-01-30 14:15:57,298 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 20 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2024-01-30 14:15:57,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 204 flow [2024-01-30 14:15:57,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:15:57,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:15:57,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 280 transitions. [2024-01-30 14:15:57,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.717948717948718 [2024-01-30 14:15:57,301 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 142 flow. Second operand 6 states and 280 transitions. [2024-01-30 14:15:57,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 204 flow [2024-01-30 14:15:57,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 200 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-30 14:15:57,303 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 174 flow [2024-01-30 14:15:57,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2024-01-30 14:15:57,304 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 9 predicate places. [2024-01-30 14:15:57,305 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 174 flow [2024-01-30 14:15:57,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 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) [2024-01-30 14:15:57,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:57,305 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:57,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-30 14:15:57,521 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 [2024-01-30 14:15:57,522 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-01-30 14:15:57,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:57,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1864386388, now seen corresponding path program 2 times [2024-01-30 14:15:57,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:57,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030296229] [2024-01-30 14:15:57,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:57,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:57,641 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:57,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:57,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030296229] [2024-01-30 14:15:57,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030296229] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-30 14:15:57,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802674198] [2024-01-30 14:15:57,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-30 14:15:57,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:15:57,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:15:57,643 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) [2024-01-30 14:15:57,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-30 14:15:57,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-30 14:15:57,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-30 14:15:57,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-30 14:15:57,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:15:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-01-30 14:15:57,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-30 14:15:57,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802674198] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:57,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-30 14:15:57,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-01-30 14:15:57,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392397555] [2024-01-30 14:15:57,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:57,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:15:57,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:57,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:15:57,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:15:57,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 65 [2024-01-30 14:15:57,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2024-01-30 14:15:57,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:57,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 65 [2024-01-30 14:15:57,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:57,845 INFO L124 PetriNetUnfolderBase]: 41/199 cut-off events. [2024-01-30 14:15:57,845 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-30 14:15:57,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 199 events. 41/199 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 711 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 280. Up to 76 conditions per place. [2024-01-30 14:15:57,847 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 27 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-01-30 14:15:57,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 232 flow [2024-01-30 14:15:57,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:15:57,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:15:57,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 180 transitions. [2024-01-30 14:15:57,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-01-30 14:15:57,849 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 174 flow. Second operand 4 states and 180 transitions. [2024-01-30 14:15:57,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 232 flow [2024-01-30 14:15:57,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 218 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-30 14:15:57,852 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 158 flow [2024-01-30 14:15:57,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2024-01-30 14:15:57,853 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2024-01-30 14:15:57,853 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 158 flow [2024-01-30 14:15:57,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2024-01-30 14:15:57,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:57,854 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-01-30 14:15:57,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-30 14:15:58,068 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 [2024-01-30 14:15:58,068 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-01-30 14:15:58,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:58,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1961443790, now seen corresponding path program 1 times [2024-01-30 14:15:58,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:58,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215107498] [2024-01-30 14:15:58,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:58,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-30 14:15:58,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:58,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215107498] [2024-01-30 14:15:58,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215107498] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-30 14:15:58,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783699807] [2024-01-30 14:15:58,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:58,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:15:58,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:15:58,177 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) [2024-01-30 14:15:58,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-30 14:15:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:58,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-30 14:15:58,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:15:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-30 14:15:58,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-30 14:15:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-30 14:15:58,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783699807] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-30 14:15:58,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-30 14:15:58,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-01-30 14:15:58,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622248421] [2024-01-30 14:15:58,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-30 14:15:58,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:15:58,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:58,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:15:58,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:15:58,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 65 [2024-01-30 14:15:58,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 158 flow. Second operand has 8 states, 8 states have (on average 43.5) internal successors, (348), 8 states have internal predecessors, (348), 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) [2024-01-30 14:15:58,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:58,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 65 [2024-01-30 14:15:58,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:58,421 INFO L124 PetriNetUnfolderBase]: 39/196 cut-off events. [2024-01-30 14:15:58,421 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-01-30 14:15:58,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 196 events. 39/196 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 696 event pairs, 26 based on Foata normal form. 2/159 useless extension candidates. Maximal degree in co-relation 272. Up to 79 conditions per place. [2024-01-30 14:15:58,424 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 20 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2024-01-30 14:15:58,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 224 flow [2024-01-30 14:15:58,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:15:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:15:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 365 transitions. [2024-01-30 14:15:58,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7019230769230769 [2024-01-30 14:15:58,426 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 158 flow. Second operand 8 states and 365 transitions. [2024-01-30 14:15:58,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 224 flow [2024-01-30 14:15:58,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 66 transitions, 221 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:15:58,430 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 191 flow [2024-01-30 14:15:58,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=191, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-01-30 14:15:58,432 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 15 predicate places. [2024-01-30 14:15:58,432 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 191 flow [2024-01-30 14:15:58,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 43.5) internal successors, (348), 8 states have internal predecessors, (348), 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) [2024-01-30 14:15:58,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:58,433 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 2, 1, 1, 1, 1, 1] [2024-01-30 14:15:58,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-30 14:15:58,648 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 [2024-01-30 14:15:58,648 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-01-30 14:15:58,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:58,649 INFO L85 PathProgramCache]: Analyzing trace with hash -465526798, now seen corresponding path program 2 times [2024-01-30 14:15:58,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:58,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277080422] [2024-01-30 14:15:58,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:58,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:15:58,677 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-30 14:15:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:15:58,723 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-30 14:15:58,724 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-30 14:15:58,725 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 39 remaining) [2024-01-30 14:15:58,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 39 remaining) [2024-01-30 14:15:58,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 39 remaining) [2024-01-30 14:15:58,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 39 remaining) [2024-01-30 14:15:58,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 39 remaining) [2024-01-30 14:15:58,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 39 remaining) [2024-01-30 14:15:58,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 39 remaining) [2024-01-30 14:15:58,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 39 remaining) [2024-01-30 14:15:58,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 39 remaining) [2024-01-30 14:15:58,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 39 remaining) [2024-01-30 14:15:58,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 39 remaining) [2024-01-30 14:15:58,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 39 remaining) [2024-01-30 14:15:58,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONERROR_FUNCTION (26 of 39 remaining) [2024-01-30 14:15:58,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 39 remaining) [2024-01-30 14:15:58,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 39 remaining) [2024-01-30 14:15:58,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 39 remaining) [2024-01-30 14:15:58,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 39 remaining) [2024-01-30 14:15:58,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 39 remaining) [2024-01-30 14:15:58,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 39 remaining) [2024-01-30 14:15:58,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 39 remaining) [2024-01-30 14:15:58,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 39 remaining) [2024-01-30 14:15:58,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 39 remaining) [2024-01-30 14:15:58,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 39 remaining) [2024-01-30 14:15:58,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 39 remaining) [2024-01-30 14:15:58,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 39 remaining) [2024-01-30 14:15:58,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 39 remaining) [2024-01-30 14:15:58,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 39 remaining) [2024-01-30 14:15:58,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 39 remaining) [2024-01-30 14:15:58,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 39 remaining) [2024-01-30 14:15:58,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 39 remaining) [2024-01-30 14:15:58,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 39 remaining) [2024-01-30 14:15:58,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONERROR_FUNCTION (7 of 39 remaining) [2024-01-30 14:15:58,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 39 remaining) [2024-01-30 14:15:58,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 39 remaining) [2024-01-30 14:15:58,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 39 remaining) [2024-01-30 14:15:58,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 39 remaining) [2024-01-30 14:15:58,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 39 remaining) [2024-01-30 14:15:58,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 39 remaining) [2024-01-30 14:15:58,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 39 remaining) [2024-01-30 14:15:58,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-30 14:15:58,742 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1] [2024-01-30 14:15:58,745 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-30 14:15:58,745 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-30 14:15:58,845 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-30 14:15:58,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 256 flow [2024-01-30 14:15:58,870 INFO L124 PetriNetUnfolderBase]: 11/128 cut-off events. [2024-01-30 14:15:58,870 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-30 14:15:58,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 128 events. 11/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 434 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 117. Up to 3 conditions per place. [2024-01-30 14:15:58,873 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 123 transitions, 256 flow [2024-01-30 14:15:58,875 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 123 transitions, 256 flow [2024-01-30 14:15:58,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:15:58,877 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;@46c62efb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:15:58,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2024-01-30 14:15:58,880 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:15:58,880 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-01-30 14:15:58,880 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:15:58,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:58,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-30 14:15:58,880 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-30 14:15:58,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash 661405541, now seen corresponding path program 1 times [2024-01-30 14:15:58,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:58,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467564905] [2024-01-30 14:15:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:58,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:58,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:58,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467564905] [2024-01-30 14:15:58,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467564905] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:58,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:58,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:15:58,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673082987] [2024-01-30 14:15:58,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:58,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:15:58,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:58,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:15:58,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:15:58,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 123 [2024-01-30 14:15:58,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 123 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2024-01-30 14:15:58,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:58,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 123 [2024-01-30 14:15:58,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:59,450 INFO L124 PetriNetUnfolderBase]: 1353/3986 cut-off events. [2024-01-30 14:15:59,451 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-01-30 14:15:59,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6003 conditions, 3986 events. 1353/3986 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 34269 event pairs, 1064 based on Foata normal form. 111/3319 useless extension candidates. Maximal degree in co-relation 5302. Up to 1969 conditions per place. [2024-01-30 14:15:59,481 INFO L140 encePairwiseOnDemand]: 117/123 looper letters, 36 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2024-01-30 14:15:59,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 121 transitions, 328 flow [2024-01-30 14:15:59,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:15:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:15:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2024-01-30 14:15:59,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7886178861788617 [2024-01-30 14:15:59,485 INFO L175 Difference]: Start difference. First operand has 117 places, 123 transitions, 256 flow. Second operand 3 states and 291 transitions. [2024-01-30 14:15:59,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 121 transitions, 328 flow [2024-01-30 14:15:59,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 121 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-30 14:15:59,488 INFO L231 Difference]: Finished difference. Result has 119 places, 121 transitions, 262 flow [2024-01-30 14:15:59,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=119, PETRI_TRANSITIONS=121} [2024-01-30 14:15:59,489 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 2 predicate places. [2024-01-30 14:15:59,489 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 121 transitions, 262 flow [2024-01-30 14:15:59,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2024-01-30 14:15:59,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:59,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:59,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-30 14:15:59,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-30 14:15:59,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:59,490 INFO L85 PathProgramCache]: Analyzing trace with hash -969689134, now seen corresponding path program 1 times [2024-01-30 14:15:59,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:59,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885358864] [2024-01-30 14:15:59,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:59,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:59,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:59,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885358864] [2024-01-30 14:15:59,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885358864] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-30 14:15:59,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208332303] [2024-01-30 14:15:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:59,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:15:59,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:15:59,533 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) [2024-01-30 14:15:59,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-30 14:15:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:59,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-30 14:15:59,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:15:59,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:59,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-30 14:15:59,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:59,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208332303] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-30 14:15:59,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-30 14:15:59,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-01-30 14:15:59,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777131222] [2024-01-30 14:15:59,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-30 14:15:59,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:15:59,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:59,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:15:59,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:15:59,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 123 [2024-01-30 14:15:59,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 121 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 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) [2024-01-30 14:15:59,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:59,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 123 [2024-01-30 14:15:59,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:16:00,133 INFO L124 PetriNetUnfolderBase]: 1353/3989 cut-off events. [2024-01-30 14:16:00,134 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-01-30 14:16:00,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6019 conditions, 3989 events. 1353/3989 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 34267 event pairs, 1064 based on Foata normal form. 0/3211 useless extension candidates. Maximal degree in co-relation 6006. Up to 1969 conditions per place. [2024-01-30 14:16:00,165 INFO L140 encePairwiseOnDemand]: 120/123 looper letters, 36 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2024-01-30 14:16:00,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 124 transitions, 356 flow [2024-01-30 14:16:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:16:00,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:16:00,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 542 transitions. [2024-01-30 14:16:00,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7344173441734417 [2024-01-30 14:16:00,168 INFO L175 Difference]: Start difference. First operand has 119 places, 121 transitions, 262 flow. Second operand 6 states and 542 transitions. [2024-01-30 14:16:00,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 124 transitions, 356 flow [2024-01-30 14:16:00,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 124 transitions, 352 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-30 14:16:00,171 INFO L231 Difference]: Finished difference. Result has 126 places, 124 transitions, 294 flow [2024-01-30 14:16:00,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=126, PETRI_TRANSITIONS=124} [2024-01-30 14:16:00,173 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 9 predicate places. [2024-01-30 14:16:00,173 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 124 transitions, 294 flow [2024-01-30 14:16:00,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 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) [2024-01-30 14:16:00,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:16:00,174 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2024-01-30 14:16:00,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-30 14:16:00,388 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 [2024-01-30 14:16:00,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-30 14:16:00,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:16:00,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1505587877, now seen corresponding path program 2 times [2024-01-30 14:16:00,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:16:00,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756239205] [2024-01-30 14:16:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:16:00,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:16:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:16:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:16:00,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:16:00,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756239205] [2024-01-30 14:16:00,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756239205] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-30 14:16:00,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804346602] [2024-01-30 14:16:00,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-30 14:16:00,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:16:00,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:16:00,485 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) [2024-01-30 14:16:00,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-30 14:16:00,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-30 14:16:00,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-30 14:16:00,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-30 14:16:00,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:16:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-01-30 14:16:00,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-30 14:16:00,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804346602] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:16:00,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-30 14:16:00,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-01-30 14:16:00,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188708325] [2024-01-30 14:16:00,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:16:00,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:16:00,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:16:00,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:16:00,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:16:00,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 123 [2024-01-30 14:16:00,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 124 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2024-01-30 14:16:00,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:16:00,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 123 [2024-01-30 14:16:00,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:16:01,185 INFO L124 PetriNetUnfolderBase]: 1441/4123 cut-off events. [2024-01-30 14:16:01,186 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-01-30 14:16:01,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6296 conditions, 4123 events. 1441/4123 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 35078 event pairs, 104 based on Foata normal form. 0/3369 useless extension candidates. Maximal degree in co-relation 6261. Up to 2014 conditions per place. [2024-01-30 14:16:01,223 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 59 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2024-01-30 14:16:01,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 140 transitions, 453 flow [2024-01-30 14:16:01,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:16:01,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:16:01,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2024-01-30 14:16:01,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7642276422764228 [2024-01-30 14:16:01,225 INFO L175 Difference]: Start difference. First operand has 126 places, 124 transitions, 294 flow. Second operand 4 states and 376 transitions. [2024-01-30 14:16:01,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 140 transitions, 453 flow [2024-01-30 14:16:01,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 140 transitions, 439 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-30 14:16:01,229 INFO L231 Difference]: Finished difference. Result has 125 places, 121 transitions, 278 flow [2024-01-30 14:16:01,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=125, PETRI_TRANSITIONS=121} [2024-01-30 14:16:01,230 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 8 predicate places. [2024-01-30 14:16:01,230 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 121 transitions, 278 flow [2024-01-30 14:16:01,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2024-01-30 14:16:01,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:16:01,231 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:16:01,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-30 14:16:01,448 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 [2024-01-30 14:16:01,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-30 14:16:01,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:16:01,449 INFO L85 PathProgramCache]: Analyzing trace with hash -571415509, now seen corresponding path program 1 times [2024-01-30 14:16:01,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:16:01,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659318549] [2024-01-30 14:16:01,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:16:01,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:16:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:16:01,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:16:01,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:16:01,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659318549] [2024-01-30 14:16:01,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659318549] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-30 14:16:01,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804766718] [2024-01-30 14:16:01,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:16:01,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:16:01,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:16:01,513 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) [2024-01-30 14:16:01,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-30 14:16:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:16:01,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-30 14:16:01,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:16:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:16:01,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-30 14:16:01,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:16:01,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804766718] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-30 14:16:01,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-30 14:16:01,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-01-30 14:16:01,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854669347] [2024-01-30 14:16:01,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-30 14:16:01,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:16:01,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:16:01,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:16:01,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:16:01,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 123 [2024-01-30 14:16:01,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 121 transitions, 278 flow. Second operand has 8 states, 8 states have (on average 84.5) internal successors, (676), 8 states have internal predecessors, (676), 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) [2024-01-30 14:16:01,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:16:01,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 123 [2024-01-30 14:16:01,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:16:02,138 INFO L124 PetriNetUnfolderBase]: 1353/3942 cut-off events. [2024-01-30 14:16:02,139 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-01-30 14:16:02,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5987 conditions, 3942 events. 1353/3942 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 33690 event pairs, 1064 based on Foata normal form. 2/3166 useless extension candidates. Maximal degree in co-relation 5950. Up to 1969 conditions per place. [2024-01-30 14:16:02,165 INFO L140 encePairwiseOnDemand]: 120/123 looper letters, 36 selfloop transitions, 7 changer transitions 0/123 dead transitions. [2024-01-30 14:16:02,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 123 transitions, 376 flow [2024-01-30 14:16:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:16:02,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:16:02,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 709 transitions. [2024-01-30 14:16:02,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7205284552845529 [2024-01-30 14:16:02,168 INFO L175 Difference]: Start difference. First operand has 125 places, 121 transitions, 278 flow. Second operand 8 states and 709 transitions. [2024-01-30 14:16:02,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 123 transitions, 376 flow [2024-01-30 14:16:02,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 123 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:16:02,171 INFO L231 Difference]: Finished difference. Result has 132 places, 123 transitions, 311 flow [2024-01-30 14:16:02,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=311, PETRI_PLACES=132, PETRI_TRANSITIONS=123} [2024-01-30 14:16:02,172 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 15 predicate places. [2024-01-30 14:16:02,172 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 123 transitions, 311 flow [2024-01-30 14:16:02,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 84.5) internal successors, (676), 8 states have internal predecessors, (676), 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) [2024-01-30 14:16:02,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:16:02,173 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:16:02,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-30 14:16:02,389 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 [2024-01-30 14:16:02,390 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-30 14:16:02,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:16:02,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2107024757, now seen corresponding path program 2 times [2024-01-30 14:16:02,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:16:02,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896351151] [2024-01-30 14:16:02,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:16:02,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:16:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:16:02,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-30 14:16:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:16:02,433 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-30 14:16:02,435 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-30 14:16:02,435 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 58 remaining) [2024-01-30 14:16:02,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 58 remaining) [2024-01-30 14:16:02,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 58 remaining) [2024-01-30 14:16:02,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 58 remaining) [2024-01-30 14:16:02,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 58 remaining) [2024-01-30 14:16:02,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 58 remaining) [2024-01-30 14:16:02,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 58 remaining) [2024-01-30 14:16:02,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 58 remaining) [2024-01-30 14:16:02,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 58 remaining) [2024-01-30 14:16:02,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 58 remaining) [2024-01-30 14:16:02,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 58 remaining) [2024-01-30 14:16:02,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 58 remaining) [2024-01-30 14:16:02,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONERROR_FUNCTION (45 of 58 remaining) [2024-01-30 14:16:02,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 58 remaining) [2024-01-30 14:16:02,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 58 remaining) [2024-01-30 14:16:02,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 58 remaining) [2024-01-30 14:16:02,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 58 remaining) [2024-01-30 14:16:02,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 58 remaining) [2024-01-30 14:16:02,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 58 remaining) [2024-01-30 14:16:02,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 58 remaining) [2024-01-30 14:16:02,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 58 remaining) [2024-01-30 14:16:02,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 58 remaining) [2024-01-30 14:16:02,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 58 remaining) [2024-01-30 14:16:02,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 58 remaining) [2024-01-30 14:16:02,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 58 remaining) [2024-01-30 14:16:02,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 58 remaining) [2024-01-30 14:16:02,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 58 remaining) [2024-01-30 14:16:02,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 58 remaining) [2024-01-30 14:16:02,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 58 remaining) [2024-01-30 14:16:02,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 58 remaining) [2024-01-30 14:16:02,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 58 remaining) [2024-01-30 14:16:02,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 58 remaining) [2024-01-30 14:16:02,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONERROR_FUNCTION (25 of 58 remaining) [2024-01-30 14:16:02,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 58 remaining) [2024-01-30 14:16:02,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 58 remaining) [2024-01-30 14:16:02,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 58 remaining) [2024-01-30 14:16:02,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 58 remaining) [2024-01-30 14:16:02,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 58 remaining) [2024-01-30 14:16:02,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 58 remaining) [2024-01-30 14:16:02,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 58 remaining) [2024-01-30 14:16:02,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 58 remaining) [2024-01-30 14:16:02,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 58 remaining) [2024-01-30 14:16:02,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 58 remaining) [2024-01-30 14:16:02,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 58 remaining) [2024-01-30 14:16:02,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 58 remaining) [2024-01-30 14:16:02,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 58 remaining) [2024-01-30 14:16:02,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 58 remaining) [2024-01-30 14:16:02,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 58 remaining) [2024-01-30 14:16:02,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 58 remaining) [2024-01-30 14:16:02,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 58 remaining) [2024-01-30 14:16:02,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONERROR_FUNCTION (7 of 58 remaining) [2024-01-30 14:16:02,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 58 remaining) [2024-01-30 14:16:02,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 58 remaining) [2024-01-30 14:16:02,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 58 remaining) [2024-01-30 14:16:02,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 58 remaining) [2024-01-30 14:16:02,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 58 remaining) [2024-01-30 14:16:02,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 58 remaining) [2024-01-30 14:16:02,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 58 remaining) [2024-01-30 14:16:02,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-30 14:16:02,445 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1] [2024-01-30 14:16:02,450 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2024-01-30 14:16:02,451 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-30 14:16:02,476 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-01-30 14:16:02,484 INFO L503 ceAbstractionStarter]: Automizer considered 18 witness invariants [2024-01-30 14:16:02,484 INFO L504 ceAbstractionStarter]: WitnessConsidered=18 [2024-01-30 14:16:02,486 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:16:02 BasicIcfg [2024-01-30 14:16:02,486 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-30 14:16:02,486 INFO L158 Benchmark]: Toolchain (without parser) took 8129.97ms. Allocated memory was 184.5MB in the beginning and 323.0MB in the end (delta: 138.4MB). Free memory was 147.9MB in the beginning and 211.8MB in the end (delta: -63.9MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. [2024-01-30 14:16:02,486 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:16:02,487 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 184.5MB. Free memory is still 154.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:16:02,487 INFO L158 Benchmark]: CACSL2BoogieTranslator took 727.26ms. Allocated memory is still 184.5MB. Free memory was 147.9MB in the beginning and 120.6MB in the end (delta: 27.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-01-30 14:16:02,487 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.39ms. Allocated memory is still 184.5MB. Free memory was 120.6MB in the beginning and 117.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:16:02,487 INFO L158 Benchmark]: Boogie Preprocessor took 93.96ms. Allocated memory is still 184.5MB. Free memory was 117.5MB in the beginning and 153.4MB in the end (delta: -35.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-01-30 14:16:02,488 INFO L158 Benchmark]: RCFGBuilder took 763.69ms. Allocated memory is still 184.5MB. Free memory was 153.4MB in the beginning and 105.4MB in the end (delta: 48.0MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2024-01-30 14:16:02,488 INFO L158 Benchmark]: TraceAbstraction took 6460.89ms. Allocated memory was 184.5MB in the beginning and 323.0MB in the end (delta: 138.4MB). Free memory was 104.3MB in the beginning and 211.8MB in the end (delta: -107.5MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. [2024-01-30 14:16:02,490 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 184.5MB. Free memory is still 154.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 727.26ms. Allocated memory is still 184.5MB. Free memory was 147.9MB in the beginning and 120.6MB in the end (delta: 27.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.39ms. Allocated memory is still 184.5MB. Free memory was 120.6MB in the beginning and 117.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.96ms. Allocated memory is still 184.5MB. Free memory was 117.5MB in the beginning and 153.4MB in the end (delta: -35.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 763.69ms. Allocated memory is still 184.5MB. Free memory was 153.4MB in the beginning and 105.4MB in the end (delta: 48.0MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * TraceAbstraction took 6460.89ms. Allocated memory was 184.5MB in the beginning and 323.0MB in the end (delta: 138.4MB). Free memory was 104.3MB in the beginning and 211.8MB in the end (delta: -107.5MB). Peak memory consumption was 33.1MB. 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: 717]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L690] 0 volatile int max = 0x80000000; [L691] 0 pthread_mutex_t m = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L691] 0 pthread_mutex_t m = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L691] 0 pthread_mutex_t m = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L691] 0 pthread_mutex_t m = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L691] 0 pthread_mutex_t m = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L691] 0 pthread_mutex_t m = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L692] 0 int storage[2*3]; [L692] 0 int storage[2*3]; [L692] 0 int storage[2*3]; [L692] 0 int storage[2*3]; [L692] 0 int storage[2*3]; [L692] 0 int storage[2*3]; [L692] 0 int storage[2*3]; [L722] 0 int i = 0; VAL [i=0, m={3:0}, max=-2147483648, storage={4:0}] [L722] COND TRUE 0 i < 2*3 [L723] 0 storage[i] = __VERIFIER_nondet_int() [L722] 0 i++ VAL [i=1, m={3:0}, max=-2147483648, storage={4:0}] [L722] COND TRUE 0 i < 2*3 [L723] 0 storage[i] = __VERIFIER_nondet_int() [L722] 0 i++ VAL [i=2, m={3:0}, max=-2147483648, storage={4:0}] [L722] COND TRUE 0 i < 2*3 [L723] 0 storage[i] = __VERIFIER_nondet_int() [L722] 0 i++ VAL [i=3, m={3:0}, max=-2147483648, storage={4:0}] [L722] COND TRUE 0 i < 2*3 [L723] 0 storage[i] = __VERIFIER_nondet_int() [L722] 0 i++ VAL [i=4, m={3:0}, max=-2147483648, storage={4:0}] [L722] COND TRUE 0 i < 2*3 [L723] 0 storage[i] = __VERIFIER_nondet_int() [L722] 0 i++ VAL [i=5, m={3:0}, max=-2147483648, storage={4:0}] [L722] COND TRUE 0 i < 2*3 [L723] 0 storage[i] = __VERIFIER_nondet_int() [L722] 0 i++ VAL [i=6, m={3:0}, max=-2147483648, storage={4:0}] [L722] COND FALSE 0 !(i < 2*3) [L724] 0 pthread_t t; VAL [m={3:0}, max=-2147483648, storage={4:0}, t={5:0}] [L725] COND TRUE 0 1 [L725] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m={3:0}, max=-2147483648, storage={4:0}, t={5:0}] [L716] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] [L716] 1 int offset=__VERIFIER_nondet_int(); [L717] 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={3:0}, max=-2147483648, offset=-1, storage={4:0}] - UnprovableResult [Line: 716]: 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: 696]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 698]: 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: 699]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 702]: 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 a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 697]: 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: 710]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 711]: 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: 712]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: 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, 113 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: 2.5s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 198 IncrementalHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 9 mSDtfsCounter, 198 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 75 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 137 SizeOfPredicates, 2 NumberOfNonLiveVariables, 329 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, 166 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: 3.6s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 82 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 387 IncrementalHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 4 mSDtfsCounter, 387 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=311occurred 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, 0.3s InterpolantComputationTime, 75 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 137 SizeOfPredicates, 2 NumberOfNonLiveVariables, 328 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! [2024-01-30 14:16:02,535 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