./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-races/race-1_1-join.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/race-1_1-join.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/ldv-races/race-1_1-join.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/race-1_1-join.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 14:19:47,134 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:19:47,202 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:19:47,208 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:19:47,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:19:47,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:19:47,254 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:19:47,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:19:47,255 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:19:47,258 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:19:47,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:19:47,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:19:47,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:19:47,260 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:19:47,260 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:19:47,261 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:19:47,261 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:19:47,261 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:19:47,261 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:19:47,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:19:47,262 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:19:47,262 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:19:47,262 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:19:47,262 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:19:47,262 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:19:47,263 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:19:47,263 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:19:47,263 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:19:47,264 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:19:47,264 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:19:47,265 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:19:47,265 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:19:47,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:19:47,265 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:19:47,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:19:47,265 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:19:47,266 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:19:47,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:19:47,266 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:19:47,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:19:47,266 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:19:47,267 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:19:47,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:19:47,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:19:47,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:19:47,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:19:47,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:19:47,496 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:19:47,497 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:19:47,497 INFO L431 ainManager$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/race-1_1-join.yml/witness.yml [2024-01-30 14:19:47,649 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:19:47,649 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:19:47,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_1-join.i [2024-01-30 14:19:48,594 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:19:48,838 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:19:48,838 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i [2024-01-30 14:19:48,851 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a6784b95/f88e7c0ee6b64615a18f2b15e11d43a3/FLAG295ce809f [2024-01-30 14:19:48,878 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a6784b95/f88e7c0ee6b64615a18f2b15e11d43a3 [2024-01-30 14:19:48,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:19:48,879 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:19:48,882 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:19:48,882 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:19:48,885 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:19:48,886 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:19:47" (1/2) ... [2024-01-30 14:19:48,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@616758a8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:19:48, skipping insertion in model container [2024-01-30 14:19:48,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:19:47" (1/2) ... [2024-01-30 14:19:48,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7c0fc9d9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:19:48, skipping insertion in model container [2024-01-30 14:19:48,888 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:19:48" (2/2) ... [2024-01-30 14:19:48,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@616758a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:19:48, skipping insertion in model container [2024-01-30 14:19:48,889 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:19:48" (2/2) ... [2024-01-30 14:19:48,889 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:19:48,961 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:19:48,962 INFO L98 nessWitnessExtractor]: Location invariant before [L1709-L1709] pdev == 1 [2024-01-30 14:19:48,962 INFO L98 nessWitnessExtractor]: Location invariant before [L1714-L1714] pdev == 3 [2024-01-30 14:19:48,962 INFO L98 nessWitnessExtractor]: Location invariant before [L1707-L1707] pdev == 1 [2024-01-30 14:19:48,963 INFO L98 nessWitnessExtractor]: Location invariant before [L1715-L1715] pdev == 3 [2024-01-30 14:19:48,963 INFO L98 nessWitnessExtractor]: Location invariant before [L1699-L1699] ((((((0 <= pdev) && (1 <= pdev)) && (pdev <= 6)) && (pdev <= 127)) && ((unsigned long )arg == 0UL)) && (pdev != 0)) && ((pdev == 1 || pdev == 5) || pdev == 6) [2024-01-30 14:19:48,963 INFO L98 nessWitnessExtractor]: Location invariant before [L1698-L1698] (unsigned long )arg == 0UL [2024-01-30 14:19:48,963 INFO L98 nessWitnessExtractor]: Location invariant before [L1705-L1705] pdev == 0 [2024-01-30 14:19:48,964 INFO L98 nessWitnessExtractor]: Location invariant before [L1721-L1721] (unsigned long )status == 0UL [2024-01-30 14:19:48,964 INFO L98 nessWitnessExtractor]: Location invariant before [L1693-L1693] ((expression == 0) && (((((((((0 <= pdev && 1 <= pdev) && pdev <= 3) && pdev <= 127) && expression == 1) && pdev % 2 == 1) && pdev != 0) && (pdev == 1 || pdev == 3)) || ((0 <= expression && expression <= 1) && (expression == 0 || expression == 1))) || ((((((((0 <= expression && 0 <= pdev) && 1 <= pdev) && expression <= 1) && pdev <= 6) && pdev <= 127) && pdev != 0) && (expression == 0 || expression == 1)) && ((pdev == 1 || pdev == 5) || pdev == 6)))) && (expression == 1) [2024-01-30 14:19:48,964 INFO L98 nessWitnessExtractor]: Location invariant before [L22-L22] pdev == 1 [2024-01-30 14:19:48,964 INFO L98 nessWitnessExtractor]: Location invariant before [L1722-L1722] (unsigned long )status == 0UL [2024-01-30 14:19:48,964 INFO L98 nessWitnessExtractor]: Location invariant before [L1708-L1711] pdev == 1 [2024-01-30 14:19:48,964 INFO L98 nessWitnessExtractor]: Location invariant before [L1700-L1700] ((((((0 <= pdev) && (1 <= pdev)) && (pdev <= 6)) && (pdev <= 127)) && ((unsigned long )arg == 0UL)) && (pdev != 0)) && ((pdev == 1 || pdev == 5) || pdev == 6) [2024-01-30 14:19:48,964 INFO L98 nessWitnessExtractor]: Location invariant before [L1712-L1712] pdev == 1 [2024-01-30 14:19:48,965 INFO L98 nessWitnessExtractor]: Location invariant before [L1713-L1713] pdev == 3 [2024-01-30 14:19:48,965 INFO L98 nessWitnessExtractor]: Location invariant before [L1706-L1706] pdev == 0 [2024-01-30 14:19:48,965 INFO L98 nessWitnessExtractor]: Location invariant before [L1720-L1720] (unsigned long )status == 0UL [2024-01-30 14:19:48,965 INFO L98 nessWitnessExtractor]: Location invariant before [L1701-L1701] ((((((0 <= pdev) && (1 <= pdev)) && (pdev <= 6)) && (pdev <= 127)) && ((unsigned long )arg == 0UL)) && (pdev != 0)) && ((pdev == 1 || pdev == 5) || pdev == 6) [2024-01-30 14:19:48,965 INFO L98 nessWitnessExtractor]: Location invariant after [L1717-L1723] (unsigned long )status == 0UL [2024-01-30 14:19:48,965 INFO L98 nessWitnessExtractor]: Location invariant before [L1702-L1702] (unsigned long )arg == 0UL [2024-01-30 14:19:49,008 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:19:49,580 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i[76068,76081] [2024-01-30 14:19:49,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:19:49,629 INFO L202 MainTranslator]: Completed pre-run [2024-01-30 14:19:49,636 WARN L424 MainDispatcher]: Unable to annotate typedef unsigned int __mode_t; with a witness entry [2024-01-30 14:19:49,670 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i[76068,76081] [2024-01-30 14:19:49,671 WARN L424 MainDispatcher]: Unable to annotate void ldv_assert(int expression) { if (!expression) { ERROR: {reach_error();abort();}}; return; } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-30 14:19:49,721 WARN L424 MainDispatcher]: Unable to annotate void module_exit() { void *status; pthread_join(t1, &status); pthread_mutex_destroy(&mutex); pdev = 5; ldv_assert(pdev==5); } with a witness entry [2024-01-30 14:19:49,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:19:49,804 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:19:49,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:19:49 WrapperNode [2024-01-30 14:19:49,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:19:49,805 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:19:49,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:19:49,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:19:49,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:19:49" (1/1) ... [2024-01-30 14:19:49,834 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:19:49" (1/1) ... [2024-01-30 14:19:49,855 INFO L138 Inliner]: procedures = 481, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 120 [2024-01-30 14:19:49,856 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:19:49,856 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:19:49,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:19:49,857 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:19:49,864 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:19:49" (1/1) ... [2024-01-30 14:19:49,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:19:49" (1/1) ... [2024-01-30 14:19:49,871 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:19:49" (1/1) ... [2024-01-30 14:19:49,882 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 3, 5, 4]. 36 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 1, 5, 0]. The 2 writes are split as follows [0, 1, 0, 1]. [2024-01-30 14:19:49,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:19:49" (1/1) ... [2024-01-30 14:19:49,883 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:19:49" (1/1) ... [2024-01-30 14:19:49,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:19:49" (1/1) ... [2024-01-30 14:19:49,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:19:49" (1/1) ... [2024-01-30 14:19:49,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:19:49" (1/1) ... [2024-01-30 14:19:49,896 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:19:49" (1/1) ... [2024-01-30 14:19:49,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:19:49,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:19:49,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:19:49,902 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:19:49,903 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:19:49" (1/1) ... [2024-01-30 14:19:49,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:19:49,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:19:49,935 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 14:19:49,942 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 14:19:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:19:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:19:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:19:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:19:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:19:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-30 14:19:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:19:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-01-30 14:19:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-01-30 14:19:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-01-30 14:19:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-01-30 14:19:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:19:49,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:19:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:19:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-01-30 14:19:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-01-30 14:19:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-01-30 14:19:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-01-30 14:19:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-30 14:19:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-30 14:19:49,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-30 14:19:49,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:19:49,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:19:49,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:19:49,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:19:49,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:19:49,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:19:49,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:19:49,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:19:49,976 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 14:19:50,193 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:19:50,195 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:19:50,328 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:19:50,328 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:19:50,380 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:19:50,381 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-30 14:19:50,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:19:50 BoogieIcfgContainer [2024-01-30 14:19:50,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:19:50,382 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:19:50,383 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:19:50,385 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:19:50,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:19:47" (1/4) ... [2024-01-30 14:19:50,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4050c46 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:19:50, skipping insertion in model container [2024-01-30 14:19:50,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:19:48" (2/4) ... [2024-01-30 14:19:50,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4050c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:19:50, skipping insertion in model container [2024-01-30 14:19:50,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:19:49" (3/4) ... [2024-01-30 14:19:50,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4050c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:19:50, skipping insertion in model container [2024-01-30 14:19:50,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:19:50" (4/4) ... [2024-01-30 14:19:50,388 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_1-join.i [2024-01-30 14:19:50,401 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:19:50,401 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2024-01-30 14:19:50,402 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:19:50,445 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-01-30 14:19:50,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 71 transitions, 149 flow [2024-01-30 14:19:50,509 INFO L124 PetriNetUnfolderBase]: 5/74 cut-off events. [2024-01-30 14:19:50,509 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-30 14:19:50,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 74 events. 5/74 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 35. Up to 3 conditions per place. [2024-01-30 14:19:50,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 71 transitions, 149 flow [2024-01-30 14:19:50,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 66 transitions, 138 flow [2024-01-30 14:19:50,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:19:50,536 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;@124395f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:19:50,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-01-30 14:19:50,538 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:19:50,538 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:19:50,538 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:19:50,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:50,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:19:50,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-30 14:19:50,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:50,544 INFO L85 PathProgramCache]: Analyzing trace with hash 10998, now seen corresponding path program 1 times [2024-01-30 14:19:50,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:50,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848089563] [2024-01-30 14:19:50,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:50,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:50,847 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 14:19:50,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:50,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848089563] [2024-01-30 14:19:50,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848089563] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:50,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:50,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:19:50,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124380953] [2024-01-30 14:19:50,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:50,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:19:50,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:50,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:19:50,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:19:50,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 71 [2024-01-30 14:19:50,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 14:19:50,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:50,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 71 [2024-01-30 14:19:50,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:51,035 INFO L124 PetriNetUnfolderBase]: 35/161 cut-off events. [2024-01-30 14:19:51,036 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-30 14:19:51,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 161 events. 35/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 550 event pairs, 35 based on Foata normal form. 8/148 useless extension candidates. Maximal degree in co-relation 206. Up to 100 conditions per place. [2024-01-30 14:19:51,040 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 29 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-01-30 14:19:51,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 190 flow [2024-01-30 14:19:51,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:19:51,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:19:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-01-30 14:19:51,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197183098591549 [2024-01-30 14:19:51,053 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 138 flow. Second operand 3 states and 132 transitions. [2024-01-30 14:19:51,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 190 flow [2024-01-30 14:19:51,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 61 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:19:51,061 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 128 flow [2024-01-30 14:19:51,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-01-30 14:19:51,065 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -2 predicate places. [2024-01-30 14:19:51,065 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 128 flow [2024-01-30 14:19:51,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 14:19:51,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:51,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-30 14:19:51,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:19:51,066 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-30 14:19:51,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:51,067 INFO L85 PathProgramCache]: Analyzing trace with hash 10580495, now seen corresponding path program 1 times [2024-01-30 14:19:51,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:51,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303142284] [2024-01-30 14:19:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:51,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:51,150 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 14:19:51,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:51,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303142284] [2024-01-30 14:19:51,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303142284] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:51,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:51,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:19:51,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421197267] [2024-01-30 14:19:51,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:51,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:19:51,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:51,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:19:51,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:19:51,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 71 [2024-01-30 14:19:51,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 14:19:51,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:51,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 71 [2024-01-30 14:19:51,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:51,275 INFO L124 PetriNetUnfolderBase]: 30/157 cut-off events. [2024-01-30 14:19:51,275 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:19:51,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 157 events. 30/157 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 568 event pairs, 5 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 242. Up to 67 conditions per place. [2024-01-30 14:19:51,276 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 32 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-01-30 14:19:51,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 200 flow [2024-01-30 14:19:51,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:19:51,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:19:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-01-30 14:19:51,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197183098591549 [2024-01-30 14:19:51,280 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 128 flow. Second operand 3 states and 132 transitions. [2024-01-30 14:19:51,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 200 flow [2024-01-30 14:19:51,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:19:51,281 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 122 flow [2024-01-30 14:19:51,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-01-30 14:19:51,283 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -6 predicate places. [2024-01-30 14:19:51,283 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 122 flow [2024-01-30 14:19:51,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 14:19:51,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:51,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-30 14:19:51,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:19:51,285 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-30 14:19:51,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:51,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1577932772, now seen corresponding path program 1 times [2024-01-30 14:19:51,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:51,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134521761] [2024-01-30 14:19:51,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:51,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:51,381 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 14:19:51,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:51,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134521761] [2024-01-30 14:19:51,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134521761] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:51,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:51,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:19:51,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896038915] [2024-01-30 14:19:51,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:51,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:19:51,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:51,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:19:51,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:19:51,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 71 [2024-01-30 14:19:51,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 14:19:51,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:51,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 71 [2024-01-30 14:19:51,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:51,537 INFO L124 PetriNetUnfolderBase]: 30/153 cut-off events. [2024-01-30 14:19:51,538 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-30 14:19:51,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 153 events. 30/153 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 550 event pairs, 5 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 54. Up to 67 conditions per place. [2024-01-30 14:19:51,541 INFO L140 encePairwiseOnDemand]: 62/71 looper letters, 31 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-01-30 14:19:51,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 200 flow [2024-01-30 14:19:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:19:51,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:19:51,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-01-30 14:19:51,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647887323943662 [2024-01-30 14:19:51,548 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 122 flow. Second operand 5 states and 165 transitions. [2024-01-30 14:19:51,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 200 flow [2024-01-30 14:19:51,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:19:51,551 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 122 flow [2024-01-30 14:19:51,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-01-30 14:19:51,552 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -8 predicate places. [2024-01-30 14:19:51,553 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 122 flow [2024-01-30 14:19:51,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 14:19:51,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:51,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:51,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:19:51,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-30 14:19:51,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:51,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1744921114, now seen corresponding path program 1 times [2024-01-30 14:19:51,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:51,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446566433] [2024-01-30 14:19:51,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:51,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:51,611 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 14:19:51,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:51,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446566433] [2024-01-30 14:19:51,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446566433] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:51,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:51,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:19:51,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319091280] [2024-01-30 14:19:51,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:51,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:19:51,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:51,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:19:51,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:19:51,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 71 [2024-01-30 14:19:51,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 14:19:51,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:51,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 71 [2024-01-30 14:19:51,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:51,682 INFO L124 PetriNetUnfolderBase]: 35/150 cut-off events. [2024-01-30 14:19:51,683 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-01-30 14:19:51,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 150 events. 35/150 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 516 event pairs, 35 based on Foata normal form. 2/133 useless extension candidates. Maximal degree in co-relation 172. Up to 98 conditions per place. [2024-01-30 14:19:51,684 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 26 selfloop transitions, 0 changer transitions 6/50 dead transitions. [2024-01-30 14:19:51,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 178 flow [2024-01-30 14:19:51,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:19:51,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:19:51,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-01-30 14:19:51,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.596244131455399 [2024-01-30 14:19:51,687 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 122 flow. Second operand 3 states and 127 transitions. [2024-01-30 14:19:51,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 178 flow [2024-01-30 14:19:51,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 164 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:19:51,688 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 90 flow [2024-01-30 14:19:51,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-01-30 14:19:51,689 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -13 predicate places. [2024-01-30 14:19:51,690 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 90 flow [2024-01-30 14:19:51,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 14:19:51,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:51,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:51,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-30 14:19:51,691 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-30 14:19:51,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:51,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1831723593, now seen corresponding path program 1 times [2024-01-30 14:19:51,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:51,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100420857] [2024-01-30 14:19:51,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:51,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:51,791 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 14:19:51,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:51,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100420857] [2024-01-30 14:19:51,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100420857] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:51,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:51,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:19:51,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987632195] [2024-01-30 14:19:51,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:51,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:19:51,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:51,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:19:51,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:19:51,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 71 [2024-01-30 14:19:51,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 14:19:51,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:51,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 71 [2024-01-30 14:19:51,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:51,856 INFO L124 PetriNetUnfolderBase]: 35/162 cut-off events. [2024-01-30 14:19:51,857 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:19:51,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 162 events. 35/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 585 event pairs, 0 based on Foata normal form. 6/148 useless extension candidates. Maximal degree in co-relation 259. Up to 82 conditions per place. [2024-01-30 14:19:51,858 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 29 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2024-01-30 14:19:51,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 47 transitions, 158 flow [2024-01-30 14:19:51,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:19:51,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:19:51,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-01-30 14:19:51,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5809859154929577 [2024-01-30 14:19:51,859 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 90 flow. Second operand 4 states and 165 transitions. [2024-01-30 14:19:51,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 47 transitions, 158 flow [2024-01-30 14:19:51,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 158 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-30 14:19:51,860 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 90 flow [2024-01-30 14:19:51,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2024-01-30 14:19:51,861 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -19 predicate places. [2024-01-30 14:19:51,861 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 90 flow [2024-01-30 14:19:51,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 14:19:51,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:51,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:51,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-30 14:19:51,862 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-30 14:19:51,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:51,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1318438771, now seen corresponding path program 1 times [2024-01-30 14:19:51,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:51,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123947132] [2024-01-30 14:19:51,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:51,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:51,940 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 14:19:51,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:51,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123947132] [2024-01-30 14:19:51,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123947132] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:51,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:51,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:19:51,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352024918] [2024-01-30 14:19:51,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:51,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:19:51,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:51,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:19:51,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:19:51,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 71 [2024-01-30 14:19:51,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 14:19:51,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:51,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 71 [2024-01-30 14:19:51,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:52,020 INFO L124 PetriNetUnfolderBase]: 55/176 cut-off events. [2024-01-30 14:19:52,021 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-01-30 14:19:52,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 176 events. 55/176 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 555 event pairs, 5 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 324. Up to 96 conditions per place. [2024-01-30 14:19:52,022 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 37 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2024-01-30 14:19:52,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 51 transitions, 188 flow [2024-01-30 14:19:52,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:19:52,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:19:52,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-01-30 14:19:52,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46830985915492956 [2024-01-30 14:19:52,023 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 90 flow. Second operand 4 states and 133 transitions. [2024-01-30 14:19:52,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 51 transitions, 188 flow [2024-01-30 14:19:52,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 185 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:19:52,024 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 91 flow [2024-01-30 14:19:52,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-01-30 14:19:52,025 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -19 predicate places. [2024-01-30 14:19:52,025 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 91 flow [2024-01-30 14:19:52,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 14:19:52,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:52,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:52,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-30 14:19:52,026 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-30 14:19:52,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:52,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2078070676, now seen corresponding path program 1 times [2024-01-30 14:19:52,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:52,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850382126] [2024-01-30 14:19:52,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:52,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:52,158 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 14:19:52,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:52,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850382126] [2024-01-30 14:19:52,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850382126] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:52,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:52,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:19:52,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561350030] [2024-01-30 14:19:52,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:52,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:19:52,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:52,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:19:52,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:19:52,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 71 [2024-01-30 14:19:52,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 14:19:52,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:52,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 71 [2024-01-30 14:19:52,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:52,249 INFO L124 PetriNetUnfolderBase]: 45/154 cut-off events. [2024-01-30 14:19:52,249 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-01-30 14:19:52,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 154 events. 45/154 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 450 event pairs, 5 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 292. Up to 69 conditions per place. [2024-01-30 14:19:52,251 INFO L140 encePairwiseOnDemand]: 66/71 looper letters, 35 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2024-01-30 14:19:52,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 183 flow [2024-01-30 14:19:52,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:19:52,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:19:52,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-01-30 14:19:52,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5211267605633803 [2024-01-30 14:19:52,252 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 91 flow. Second operand 4 states and 148 transitions. [2024-01-30 14:19:52,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 183 flow [2024-01-30 14:19:52,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 177 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:19:52,254 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 87 flow [2024-01-30 14:19:52,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=87, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-01-30 14:19:52,257 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -21 predicate places. [2024-01-30 14:19:52,257 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 87 flow [2024-01-30 14:19:52,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 14:19:52,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:52,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:52,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-30 14:19:52,259 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-30 14:19:52,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:52,259 INFO L85 PathProgramCache]: Analyzing trace with hash 133885295, now seen corresponding path program 1 times [2024-01-30 14:19:52,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:52,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971834833] [2024-01-30 14:19:52,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:52,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:52,333 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 14:19:52,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:52,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971834833] [2024-01-30 14:19:52,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971834833] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:52,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:52,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:19:52,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24675652] [2024-01-30 14:19:52,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:52,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:19:52,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:52,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:19:52,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:19:52,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 71 [2024-01-30 14:19:52,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 14:19:52,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:52,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 71 [2024-01-30 14:19:52,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:52,418 INFO L124 PetriNetUnfolderBase]: 35/117 cut-off events. [2024-01-30 14:19:52,418 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-30 14:19:52,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 117 events. 35/117 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 299 event pairs, 5 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 223. Up to 47 conditions per place. [2024-01-30 14:19:52,419 INFO L140 encePairwiseOnDemand]: 66/71 looper letters, 26 selfloop transitions, 4 changer transitions 6/47 dead transitions. [2024-01-30 14:19:52,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 175 flow [2024-01-30 14:19:52,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:19:52,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:19:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-01-30 14:19:52,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5950704225352113 [2024-01-30 14:19:52,421 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 87 flow. Second operand 4 states and 169 transitions. [2024-01-30 14:19:52,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 175 flow [2024-01-30 14:19:52,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 169 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:19:52,422 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 81 flow [2024-01-30 14:19:52,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-01-30 14:19:52,422 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -23 predicate places. [2024-01-30 14:19:52,422 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 81 flow [2024-01-30 14:19:52,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 14:19:52,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:52,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:52,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-30 14:19:52,423 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-30 14:19:52,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:52,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1228426077, now seen corresponding path program 1 times [2024-01-30 14:19:52,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:52,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207481125] [2024-01-30 14:19:52,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:52,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:52,610 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 14:19:52,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:52,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207481125] [2024-01-30 14:19:52,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207481125] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:52,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:52,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:19:52,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105513078] [2024-01-30 14:19:52,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:52,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:19:52,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:52,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:19:52,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:19:52,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 71 [2024-01-30 14:19:52,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 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 14:19:52,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:52,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 71 [2024-01-30 14:19:52,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:52,689 INFO L124 PetriNetUnfolderBase]: 18/79 cut-off events. [2024-01-30 14:19:52,690 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-01-30 14:19:52,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 79 events. 18/79 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 142 event pairs, 15 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 153. Up to 48 conditions per place. [2024-01-30 14:19:52,691 INFO L140 encePairwiseOnDemand]: 66/71 looper letters, 22 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2024-01-30 14:19:52,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 137 flow [2024-01-30 14:19:52,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:19:52,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:19:52,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 202 transitions. [2024-01-30 14:19:52,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5690140845070423 [2024-01-30 14:19:52,693 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 81 flow. Second operand 5 states and 202 transitions. [2024-01-30 14:19:52,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 137 flow [2024-01-30 14:19:52,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 37 transitions, 129 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:19:52,696 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 79 flow [2024-01-30 14:19:52,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-01-30 14:19:52,697 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -25 predicate places. [2024-01-30 14:19:52,697 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 79 flow [2024-01-30 14:19:52,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 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 14:19:52,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:52,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:52,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-30 14:19:52,698 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-30 14:19:52,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:52,698 INFO L85 PathProgramCache]: Analyzing trace with hash 789095830, now seen corresponding path program 1 times [2024-01-30 14:19:52,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:52,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449515173] [2024-01-30 14:19:52,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:52,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:53,132 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 14:19:53,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:53,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449515173] [2024-01-30 14:19:53,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449515173] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:53,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:53,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:19:53,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994665373] [2024-01-30 14:19:53,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:53,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:19:53,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:53,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:19:53,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:19:53,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 71 [2024-01-30 14:19:53,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 79 flow. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 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 14:19:53,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:53,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 71 [2024-01-30 14:19:53,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:53,245 INFO L124 PetriNetUnfolderBase]: 18/78 cut-off events. [2024-01-30 14:19:53,245 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-30 14:19:53,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 78 events. 18/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 141 event pairs, 15 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 146. Up to 48 conditions per place. [2024-01-30 14:19:53,246 INFO L140 encePairwiseOnDemand]: 65/71 looper letters, 21 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-01-30 14:19:53,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 135 flow [2024-01-30 14:19:53,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:19:53,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:19:53,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-01-30 14:19:53,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422535211267606 [2024-01-30 14:19:53,248 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 79 flow. Second operand 6 states and 231 transitions. [2024-01-30 14:19:53,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 135 flow [2024-01-30 14:19:53,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 36 transitions, 127 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:19:53,249 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 79 flow [2024-01-30 14:19:53,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-01-30 14:19:53,250 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -25 predicate places. [2024-01-30 14:19:53,250 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 79 flow [2024-01-30 14:19:53,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 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 14:19:53,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:53,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:53,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-30 14:19:53,251 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-30 14:19:53,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:53,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1307832691, now seen corresponding path program 1 times [2024-01-30 14:19:53,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:53,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805463348] [2024-01-30 14:19:53,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:53,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:53,673 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 14:19:53,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:53,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805463348] [2024-01-30 14:19:53,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805463348] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:53,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:53,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:19:53,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804592639] [2024-01-30 14:19:53,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:53,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:19:53,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:53,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:19:53,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:19:53,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 71 [2024-01-30 14:19:53,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 79 flow. Second operand has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 states have internal predecessors, (261), 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 14:19:53,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:53,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 71 [2024-01-30 14:19:53,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:53,799 INFO L124 PetriNetUnfolderBase]: 18/77 cut-off events. [2024-01-30 14:19:53,799 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-30 14:19:53,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 77 events. 18/77 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 140 event pairs, 15 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 146. Up to 48 conditions per place. [2024-01-30 14:19:53,800 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 20 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-01-30 14:19:53,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 35 transitions, 135 flow [2024-01-30 14:19:53,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:53,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:53,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 265 transitions. [2024-01-30 14:19:53,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331991951710262 [2024-01-30 14:19:53,801 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 79 flow. Second operand 7 states and 265 transitions. [2024-01-30 14:19:53,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 35 transitions, 135 flow [2024-01-30 14:19:53,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 35 transitions, 125 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-30 14:19:53,802 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 79 flow [2024-01-30 14:19:53,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=79, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-01-30 14:19:53,803 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -25 predicate places. [2024-01-30 14:19:53,803 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 79 flow [2024-01-30 14:19:53,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 states have internal predecessors, (261), 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 14:19:53,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:53,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:53,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-30 14:19:53,804 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-30 14:19:53,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:53,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1598212229, now seen corresponding path program 1 times [2024-01-30 14:19:53,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:53,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932116801] [2024-01-30 14:19:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:53,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:53,881 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 14:19:53,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:53,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932116801] [2024-01-30 14:19:53,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932116801] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:53,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:53,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:19:53,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632462169] [2024-01-30 14:19:53,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:53,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:19:53,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:53,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:19:53,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:19:53,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 71 [2024-01-30 14:19:53,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 14:19:53,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:53,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 71 [2024-01-30 14:19:53,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:53,950 INFO L124 PetriNetUnfolderBase]: 18/75 cut-off events. [2024-01-30 14:19:53,950 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-30 14:19:53,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 75 events. 18/75 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 140 event pairs, 18 based on Foata normal form. 1/73 useless extension candidates. Maximal degree in co-relation 146. Up to 57 conditions per place. [2024-01-30 14:19:53,951 INFO L140 encePairwiseOnDemand]: 66/71 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-01-30 14:19:53,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 30 transitions, 123 flow [2024-01-30 14:19:53,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:19:53,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:19:53,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2024-01-30 14:19:53,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4788732394366197 [2024-01-30 14:19:53,952 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 79 flow. Second operand 5 states and 170 transitions. [2024-01-30 14:19:53,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 30 transitions, 123 flow [2024-01-30 14:19:53,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 30 transitions, 111 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-30 14:19:53,953 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2024-01-30 14:19:53,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2024-01-30 14:19:53,954 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -29 predicate places. [2024-01-30 14:19:53,954 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2024-01-30 14:19:53,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 14:19:53,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 28 remaining) [2024-01-30 14:19:53,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 28 remaining) [2024-01-30 14:19:53,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 28 remaining) [2024-01-30 14:19:53,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONERROR_FUNCTION (24 of 28 remaining) [2024-01-30 14:19:53,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 28 remaining) [2024-01-30 14:19:53,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 28 remaining) [2024-01-30 14:19:53,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 28 remaining) [2024-01-30 14:19:53,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 28 remaining) [2024-01-30 14:19:53,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 28 remaining) [2024-01-30 14:19:53,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (18 of 28 remaining) [2024-01-30 14:19:53,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 28 remaining) [2024-01-30 14:19:53,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 28 remaining) [2024-01-30 14:19:53,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 28 remaining) [2024-01-30 14:19:53,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 28 remaining) [2024-01-30 14:19:53,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (13 of 28 remaining) [2024-01-30 14:19:53,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 28 remaining) [2024-01-30 14:19:53,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 28 remaining) [2024-01-30 14:19:53,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 28 remaining) [2024-01-30 14:19:53,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 28 remaining) [2024-01-30 14:19:53,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 28 remaining) [2024-01-30 14:19:53,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION (7 of 28 remaining) [2024-01-30 14:19:53,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 28 remaining) [2024-01-30 14:19:53,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 28 remaining) [2024-01-30 14:19:53,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 28 remaining) [2024-01-30 14:19:53,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 28 remaining) [2024-01-30 14:19:53,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONERROR_FUNCTION (2 of 28 remaining) [2024-01-30 14:19:53,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 28 remaining) [2024-01-30 14:19:53,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 28 remaining) [2024-01-30 14:19:53,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-30 14:19:53,961 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:19:53,966 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-30 14:19:53,966 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-30 14:19:53,971 INFO L503 ceAbstractionStarter]: Automizer considered 17 witness invariants [2024-01-30 14:19:53,971 INFO L504 ceAbstractionStarter]: WitnessConsidered=17 [2024-01-30 14:19:53,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:19:53 BasicIcfg [2024-01-30 14:19:53,972 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-30 14:19:53,972 INFO L158 Benchmark]: Toolchain (without parser) took 5093.25ms. Allocated memory was 172.0MB in the beginning and 251.7MB in the end (delta: 79.7MB). Free memory was 137.8MB in the beginning and 142.3MB in the end (delta: -4.5MB). Peak memory consumption was 76.2MB. Max. memory is 16.1GB. [2024-01-30 14:19:53,973 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 130.0MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:19:53,973 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 130.0MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:19:53,973 INFO L158 Benchmark]: CACSL2BoogieTranslator took 923.17ms. Allocated memory is still 172.0MB. Free memory was 137.0MB in the beginning and 132.5MB in the end (delta: 4.5MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. [2024-01-30 14:19:53,973 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.63ms. Allocated memory is still 172.0MB. Free memory was 132.5MB in the beginning and 129.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-30 14:19:53,973 INFO L158 Benchmark]: Boogie Preprocessor took 45.01ms. Allocated memory is still 172.0MB. Free memory was 129.3MB in the beginning and 125.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-30 14:19:53,974 INFO L158 Benchmark]: RCFGBuilder took 479.39ms. Allocated memory is still 172.0MB. Free memory was 125.1MB in the beginning and 88.4MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-01-30 14:19:53,974 INFO L158 Benchmark]: TraceAbstraction took 3589.64ms. Allocated memory was 172.0MB in the beginning and 251.7MB in the end (delta: 79.7MB). Free memory was 88.4MB in the beginning and 142.3MB in the end (delta: -53.8MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2024-01-30 14:19:53,975 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 130.0MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 130.0MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 923.17ms. Allocated memory is still 172.0MB. Free memory was 137.0MB in the beginning and 132.5MB in the end (delta: 4.5MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.63ms. Allocated memory is still 172.0MB. Free memory was 132.5MB in the beginning and 129.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.01ms. Allocated memory is still 172.0MB. Free memory was 129.3MB in the beginning and 125.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 479.39ms. Allocated memory is still 172.0MB. Free memory was 125.1MB in the beginning and 88.4MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3589.64ms. Allocated memory was 172.0MB in the beginning and 251.7MB in the end (delta: 79.7MB). Free memory was 88.4MB in the beginning and 142.3MB in the end (delta: -53.8MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1698]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1699]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1700]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1701]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1702]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1705]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1706]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1707]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1708]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1709]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1712]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1713]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1714]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1715]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1720]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1721]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1722]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 87 locations, 28 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: 3.5s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 547 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 343 mSDsluCounter, 97 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1188 IncrementalHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 21 mSDtfsCounter, 1188 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=0, InterpolantAutomatonStates: 53, 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, 1.5s InterpolantComputationTime, 202 NumberOfCodeBlocks, 202 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 190 ConstructedInterpolants, 0 QuantifiedInterpolants, 457 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 21 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-30 14:19:54,014 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 Result: TRUE