./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.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/13-privatized_34-traces-minepp-L-needs-to-be-um_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_34-traces-minepp-L-needs-to-be-um_true.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-59af5db-m [2024-02-02 09:17:44,764 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:17:44,829 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:17:44,834 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:17:44,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:17:44,848 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:17:44,849 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:17:44,849 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:17:44,849 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:17:44,850 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:17:44,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:17:44,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:17:44,852 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:17:44,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:17:44,855 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:17:44,855 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:17:44,856 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:17:44,856 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:17:44,857 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:17:44,857 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:17:44,857 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:17:44,857 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:17:44,858 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:17:44,858 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:17:44,858 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:17:44,858 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:17:44,858 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:17:44,859 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:17:44,859 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:17:44,859 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:17:44,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:17:44,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:17:44,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:17:44,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:17:44,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:17:44,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:17:44,861 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:17:44,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:17:44,862 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:17:44,862 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:17:44,862 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:17:44,862 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:17:44,862 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:17:44,862 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:17:45,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:17:45,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:17:45,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:17:45,108 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:17:45,109 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:17:45,110 INFO L431 ainManager$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/13-privatized_34-traces-minepp-L-needs-to-be-um_true.yml/witness.yml [2024-02-02 09:17:45,249 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:17:45,249 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:17:45,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2024-02-02 09:17:46,292 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:17:46,501 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:17:46,501 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2024-02-02 09:17:46,512 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50da6d5e/2d873d5a556e42128dbdf4a53453afeb/FLAGbfe35a694 [2024-02-02 09:17:46,521 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50da6d5e/2d873d5a556e42128dbdf4a53453afeb [2024-02-02 09:17:46,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:17:46,523 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:17:46,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:17:46,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:17:46,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:17:46,529 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:17:45" (1/2) ... [2024-02-02 09:17:46,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f7fd6a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:17:46, skipping insertion in model container [2024-02-02 09:17:46,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:17:45" (1/2) ... [2024-02-02 09:17:46,531 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4b43ef8f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:17:46, skipping insertion in model container [2024-02-02 09:17:46,532 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:17:46" (2/2) ... [2024-02-02 09:17:46,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f7fd6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:46, skipping insertion in model container [2024-02-02 09:17:46,532 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:17:46" (2/2) ... [2024-02-02 09:17:46,533 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:17:46,613 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:17:46,614 INFO L101 nessWitnessExtractor]: Location invariant before [L688-L688] (((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && ((unsigned long )arg == 0UL)) && (g != 0)) && (g == 15 || g == 42) [2024-02-02 09:17:46,614 INFO L101 nessWitnessExtractor]: Location invariant before [L689-L689] (((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && ((unsigned long )arg == 0UL)) && (g != 0)) && (g == 15 || g == 42) [2024-02-02 09:17:46,614 INFO L101 nessWitnessExtractor]: Location invariant before [L709-L709] r == 0 [2024-02-02 09:17:46,615 INFO L101 nessWitnessExtractor]: Location invariant before [L706-L706] (((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && (g != 0)) && (r != 0)) && (g == 15 || g == 42) [2024-02-02 09:17:46,615 INFO L101 nessWitnessExtractor]: Location invariant before [L19-L19] ((((((((((((((((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && (g != 0)) && (g == 15 || g == 42)) && (0 <= g)) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && (g != 0)) && (g == 15 || g == 42)) && (0 <= g)) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && (g != 0)) && (g == 15 || g == 42) [2024-02-02 09:17:46,615 INFO L101 nessWitnessExtractor]: Location invariant before [L690-L690] (((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && ((unsigned long )arg == 0UL)) && (g != 0)) && (g == 15 || g == 42) [2024-02-02 09:17:46,616 INFO L101 nessWitnessExtractor]: Location invariant before [L691-L691] (g == 15) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:46,616 INFO L101 nessWitnessExtractor]: Location invariant before [L693-L693] (g == 15) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:46,616 INFO L101 nessWitnessExtractor]: Location invariant before [L710-L710] (((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (r == 0)) && (g % 27 == 15)) && (g != 0)) && (g == 15 || g == 42) [2024-02-02 09:17:46,616 INFO L101 nessWitnessExtractor]: Location invariant before [L701-L701] g == 42 [2024-02-02 09:17:46,616 INFO L101 nessWitnessExtractor]: Location invariant before [L694-L694] (g == 42) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:46,616 INFO L101 nessWitnessExtractor]: Location invariant before [L705-L705] (((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && (g != 0)) && (r != 0)) && (g == 15 || g == 42) [2024-02-02 09:17:46,616 INFO L101 nessWitnessExtractor]: Location invariant before [L696-L696] (g == 42) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:46,617 INFO L101 nessWitnessExtractor]: Location invariant before [L714-L714] ((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && (g != 0)) && (g == 15 || g == 42) [2024-02-02 09:17:46,617 INFO L101 nessWitnessExtractor]: Location invariant before [L697-L697] (unsigned long )arg == 0UL [2024-02-02 09:17:46,617 INFO L101 nessWitnessExtractor]: Location invariant before [L704-L704] r != 0 [2024-02-02 09:17:46,617 INFO L101 nessWitnessExtractor]: Location invariant before [L695-L695] (g == 42) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:46,617 INFO L101 nessWitnessExtractor]: Location invariant before [L711-L711] (((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (r == 0)) && (g % 27 == 15)) && (g != 0)) && (g == 15 || g == 42) [2024-02-02 09:17:46,617 INFO L101 nessWitnessExtractor]: Location invariant before [L692-L692] (g == 15) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:46,617 INFO L101 nessWitnessExtractor]: Location invariant before [L713-L713] ((((((0 <= g) && (15 <= g)) && (g <= 42)) && (g <= 127)) && (g % 27 == 15)) && (g != 0)) && (g == 15 || g == 42) [2024-02-02 09:17:46,618 INFO L101 nessWitnessExtractor]: Location invariant before [L687-L687] (unsigned long )arg == 0UL [2024-02-02 09:17:46,655 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:17:46,812 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i[1107,1120] [2024-02-02 09:17:46,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:17:46,979 INFO L202 MainTranslator]: Completed pre-run [2024-02-02 09:17:46,990 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i[1107,1120] [2024-02-02 09:17:46,990 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_assert(int cond) { if(!(cond)) { ERROR: {reach_error();abort();} } } 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 Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:17:47,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:17:47,092 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:17:47,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:47 WrapperNode [2024-02-02 09:17:47,092 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:17:47,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:17:47,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:17:47,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:17:47,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:47" (1/1) ... [2024-02-02 09:17:47,108 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:47" (1/1) ... [2024-02-02 09:17:47,136 INFO L138 Inliner]: procedures = 164, calls = 44, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2024-02-02 09:17:47,138 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:17:47,139 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:17:47,139 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:17:47,139 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:17:47,147 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:47" (1/1) ... [2024-02-02 09:17:47,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:47" (1/1) ... [2024-02-02 09:17:47,154 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:47" (1/1) ... [2024-02-02 09:17:47,170 INFO L175 MemorySlicer]: Split 18 memory accesses to 5 slices as follows [2, 1, 5, 5, 5]. 28 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 5, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0, 0]. [2024-02-02 09:17:47,174 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:47" (1/1) ... [2024-02-02 09:17:47,175 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:47" (1/1) ... [2024-02-02 09:17:47,180 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:47" (1/1) ... [2024-02-02 09:17:47,187 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:47" (1/1) ... [2024-02-02 09:17:47,188 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:47" (1/1) ... [2024-02-02 09:17:47,189 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:47" (1/1) ... [2024-02-02 09:17:47,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:17:47,192 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:17:47,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:17:47,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:17:47,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:47" (1/1) ... [2024-02-02 09:17:47,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:17:47,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:17:47,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-02 09:17:47,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-02 09:17:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:17:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:17:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:17:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-02 09:17:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-02 09:17:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-02 09:17:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:17:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:17:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-02 09:17:47,247 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-02 09:17:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:17:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:17:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:17:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:17:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-02 09:17:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-02 09:17:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-02 09:17:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:17:47,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:17:47,249 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:17:47,340 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:17:47,341 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:17:47,565 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:17:47,565 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:17:47,685 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:17:47,685 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-02 09:17:47,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:17:47 BoogieIcfgContainer [2024-02-02 09:17:47,686 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:17:47,689 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:17:47,689 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:17:47,691 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:17:47,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:17:45" (1/4) ... [2024-02-02 09:17:47,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ceea7b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:17:47, skipping insertion in model container [2024-02-02 09:17:47,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:17:46" (2/4) ... [2024-02-02 09:17:47,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ceea7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:17:47, skipping insertion in model container [2024-02-02 09:17:47,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:47" (3/4) ... [2024-02-02 09:17:47,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ceea7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:17:47, skipping insertion in model container [2024-02-02 09:17:47,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:17:47" (4/4) ... [2024-02-02 09:17:47,694 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2024-02-02 09:17:47,708 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:17:47,709 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2024-02-02 09:17:47,709 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:17:47,769 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 09:17:47,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 80 transitions, 164 flow [2024-02-02 09:17:47,834 INFO L124 PetriNetUnfolderBase]: 2/79 cut-off events. [2024-02-02 09:17:47,835 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:17:47,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 148 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2024-02-02 09:17:47,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 80 transitions, 164 flow [2024-02-02 09:17:47,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 79 transitions, 161 flow [2024-02-02 09:17:47,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:17:47,866 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;@55e96bd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:17:47,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-02-02 09:17:47,868 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:17:47,868 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:17:47,869 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:17:47,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:47,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:17:47,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:17:47,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:47,875 INFO L85 PathProgramCache]: Analyzing trace with hash 10117, now seen corresponding path program 1 times [2024-02-02 09:17:47,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:47,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295530683] [2024-02-02 09:17:47,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:47,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:48,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:48,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295530683] [2024-02-02 09:17:48,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295530683] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:48,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:48,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:17:48,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936326515] [2024-02-02 09:17:48,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:48,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:17:48,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:48,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:17:48,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:17:48,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 80 [2024-02-02 09:17:48,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 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) [2024-02-02 09:17:48,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:48,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 80 [2024-02-02 09:17:48,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:48,407 INFO L124 PetriNetUnfolderBase]: 173/645 cut-off events. [2024-02-02 09:17:48,407 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:17:48,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 645 events. 173/645 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4005 event pairs, 118 based on Foata normal form. 17/599 useless extension candidates. Maximal degree in co-relation 1022. Up to 260 conditions per place. [2024-02-02 09:17:48,415 INFO L140 encePairwiseOnDemand]: 73/80 looper letters, 38 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2024-02-02 09:17:48,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 87 transitions, 259 flow [2024-02-02 09:17:48,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:17:48,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:17:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-02-02 09:17:48,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7791666666666667 [2024-02-02 09:17:48,428 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 161 flow. Second operand 3 states and 187 transitions. [2024-02-02 09:17:48,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 87 transitions, 259 flow [2024-02-02 09:17:48,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:17:48,435 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 169 flow [2024-02-02 09:17:48,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2024-02-02 09:17:48,440 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2024-02-02 09:17:48,440 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 169 flow [2024-02-02 09:17:48,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 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) [2024-02-02 09:17:48,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:48,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:17:48,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:17:48,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:17:48,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:48,442 INFO L85 PathProgramCache]: Analyzing trace with hash 301792462, now seen corresponding path program 1 times [2024-02-02 09:17:48,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:48,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851348400] [2024-02-02 09:17:48,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:48,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:48,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:48,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851348400] [2024-02-02 09:17:48,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851348400] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:48,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:48,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:17:48,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324623783] [2024-02-02 09:17:48,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:48,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:17:48,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:48,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:17:48,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:17:48,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 80 [2024-02-02 09:17:48,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:48,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:48,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 80 [2024-02-02 09:17:48,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:48,737 INFO L124 PetriNetUnfolderBase]: 121/593 cut-off events. [2024-02-02 09:17:48,737 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-02-02 09:17:48,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 593 events. 121/593 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3757 event pairs, 0 based on Foata normal form. 11/511 useless extension candidates. Maximal degree in co-relation 899. Up to 262 conditions per place. [2024-02-02 09:17:48,742 INFO L140 encePairwiseOnDemand]: 76/80 looper letters, 33 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-02-02 09:17:48,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 85 transitions, 255 flow [2024-02-02 09:17:48,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:48,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:48,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 245 transitions. [2024-02-02 09:17:48,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.765625 [2024-02-02 09:17:48,749 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 169 flow. Second operand 4 states and 245 transitions. [2024-02-02 09:17:48,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 85 transitions, 255 flow [2024-02-02 09:17:48,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 249 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:17:48,752 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 163 flow [2024-02-02 09:17:48,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-02-02 09:17:48,753 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 0 predicate places. [2024-02-02 09:17:48,753 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 163 flow [2024-02-02 09:17:48,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:48,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:48,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-02 09:17:48,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:17:48,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:17:48,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:48,755 INFO L85 PathProgramCache]: Analyzing trace with hash 765579996, now seen corresponding path program 1 times [2024-02-02 09:17:48,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:48,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062711871] [2024-02-02 09:17:48,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:48,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:48,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:48,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:48,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062711871] [2024-02-02 09:17:48,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062711871] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:48,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:48,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:17:48,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670628970] [2024-02-02 09:17:48,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:48,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:17:48,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:48,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:17:48,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:17:48,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 80 [2024-02-02 09:17:48,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 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) [2024-02-02 09:17:48,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:48,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 80 [2024-02-02 09:17:48,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:48,956 INFO L124 PetriNetUnfolderBase]: 243/888 cut-off events. [2024-02-02 09:17:48,957 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-02-02 09:17:48,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 888 events. 243/888 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5985 event pairs, 198 based on Foata normal form. 0/767 useless extension candidates. Maximal degree in co-relation 1446. Up to 290 conditions per place. [2024-02-02 09:17:48,962 INFO L140 encePairwiseOnDemand]: 76/80 looper letters, 44 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2024-02-02 09:17:48,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 88 transitions, 285 flow [2024-02-02 09:17:48,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:17:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:17:48,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2024-02-02 09:17:48,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7625 [2024-02-02 09:17:48,964 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 163 flow. Second operand 3 states and 183 transitions. [2024-02-02 09:17:48,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 88 transitions, 285 flow [2024-02-02 09:17:48,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 88 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:17:48,967 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 171 flow [2024-02-02 09:17:48,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-02-02 09:17:48,968 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 0 predicate places. [2024-02-02 09:17:48,968 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 171 flow [2024-02-02 09:17:48,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 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) [2024-02-02 09:17:48,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:48,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-02 09:17:48,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:17:48,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:17:48,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:48,971 INFO L85 PathProgramCache]: Analyzing trace with hash 765580015, now seen corresponding path program 1 times [2024-02-02 09:17:48,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:48,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292873540] [2024-02-02 09:17:48,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:48,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:49,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:49,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292873540] [2024-02-02 09:17:49,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292873540] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:49,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:49,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:17:49,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98926812] [2024-02-02 09:17:49,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:49,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:17:49,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:49,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:17:49,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:17:49,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 80 [2024-02-02 09:17:49,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 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) [2024-02-02 09:17:49,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:49,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 80 [2024-02-02 09:17:49,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:49,135 INFO L124 PetriNetUnfolderBase]: 232/820 cut-off events. [2024-02-02 09:17:49,136 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-02-02 09:17:49,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1415 conditions, 820 events. 232/820 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5523 event pairs, 209 based on Foata normal form. 12/748 useless extension candidates. Maximal degree in co-relation 1402. Up to 290 conditions per place. [2024-02-02 09:17:49,140 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 44 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2024-02-02 09:17:49,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 87 transitions, 286 flow [2024-02-02 09:17:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:17:49,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:17:49,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2024-02-02 09:17:49,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7583333333333333 [2024-02-02 09:17:49,141 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 171 flow. Second operand 3 states and 182 transitions. [2024-02-02 09:17:49,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 87 transitions, 286 flow [2024-02-02 09:17:49,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:17:49,143 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 168 flow [2024-02-02 09:17:49,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2024-02-02 09:17:49,144 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 0 predicate places. [2024-02-02 09:17:49,144 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 168 flow [2024-02-02 09:17:49,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 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) [2024-02-02 09:17:49,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:49,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:49,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:17:49,145 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:17:49,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:49,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1333046400, now seen corresponding path program 1 times [2024-02-02 09:17:49,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:49,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964647830] [2024-02-02 09:17:49,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:49,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:49,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:49,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964647830] [2024-02-02 09:17:49,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964647830] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:49,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:49,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:17:49,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580660875] [2024-02-02 09:17:49,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:49,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:17:49,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:49,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:17:49,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:17:49,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 80 [2024-02-02 09:17:49,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:49,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:49,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 80 [2024-02-02 09:17:49,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:49,411 INFO L124 PetriNetUnfolderBase]: 277/783 cut-off events. [2024-02-02 09:17:49,412 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2024-02-02 09:17:49,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1505 conditions, 783 events. 277/783 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4839 event pairs, 28 based on Foata normal form. 0/767 useless extension candidates. Maximal degree in co-relation 1492. Up to 396 conditions per place. [2024-02-02 09:17:49,415 INFO L140 encePairwiseOnDemand]: 70/80 looper letters, 54 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2024-02-02 09:17:49,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 90 transitions, 328 flow [2024-02-02 09:17:49,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:49,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:49,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2024-02-02 09:17:49,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.628125 [2024-02-02 09:17:49,416 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 168 flow. Second operand 4 states and 201 transitions. [2024-02-02 09:17:49,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 90 transitions, 328 flow [2024-02-02 09:17:49,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 90 transitions, 314 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-02-02 09:17:49,418 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 158 flow [2024-02-02 09:17:49,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2024-02-02 09:17:49,419 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -5 predicate places. [2024-02-02 09:17:49,419 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 158 flow [2024-02-02 09:17:49,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:49,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:49,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:49,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:17:49,420 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:17:49,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:49,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1117675898, now seen corresponding path program 1 times [2024-02-02 09:17:49,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:49,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144694591] [2024-02-02 09:17:49,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:49,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:49,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:49,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:49,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144694591] [2024-02-02 09:17:49,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144694591] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:49,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:49,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:17:49,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095880676] [2024-02-02 09:17:49,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:49,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:17:49,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:49,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:17:49,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:17:49,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 80 [2024-02-02 09:17:49,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:49,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:49,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 80 [2024-02-02 09:17:49,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:49,735 INFO L124 PetriNetUnfolderBase]: 470/1342 cut-off events. [2024-02-02 09:17:49,736 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-02-02 09:17:49,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 1342 events. 470/1342 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9194 event pairs, 145 based on Foata normal form. 0/1241 useless extension candidates. Maximal degree in co-relation 2496. Up to 479 conditions per place. [2024-02-02 09:17:49,741 INFO L140 encePairwiseOnDemand]: 68/80 looper letters, 75 selfloop transitions, 11 changer transitions 1/111 dead transitions. [2024-02-02 09:17:49,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 111 transitions, 426 flow [2024-02-02 09:17:49,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:49,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:49,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-02-02 09:17:49,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.684375 [2024-02-02 09:17:49,742 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 158 flow. Second operand 4 states and 219 transitions. [2024-02-02 09:17:49,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 111 transitions, 426 flow [2024-02-02 09:17:49,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 111 transitions, 416 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:17:49,745 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 227 flow [2024-02-02 09:17:49,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2024-02-02 09:17:49,745 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -3 predicate places. [2024-02-02 09:17:49,746 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 227 flow [2024-02-02 09:17:49,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:49,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:49,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:49,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:17:49,746 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:17:49,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:49,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1118230449, now seen corresponding path program 1 times [2024-02-02 09:17:49,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:49,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028962444] [2024-02-02 09:17:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:49,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:49,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:49,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028962444] [2024-02-02 09:17:49,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028962444] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:49,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:49,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:17:49,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694673395] [2024-02-02 09:17:49,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:49,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:17:49,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:17:49,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:17:49,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 80 [2024-02-02 09:17:49,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:49,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:49,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 80 [2024-02-02 09:17:49,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:50,058 INFO L124 PetriNetUnfolderBase]: 523/1510 cut-off events. [2024-02-02 09:17:50,059 INFO L125 PetriNetUnfolderBase]: For 590/590 co-relation queries the response was YES. [2024-02-02 09:17:50,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3061 conditions, 1510 events. 523/1510 cut-off events. For 590/590 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 10520 event pairs, 236 based on Foata normal form. 24/1506 useless extension candidates. Maximal degree in co-relation 3046. Up to 628 conditions per place. [2024-02-02 09:17:50,064 INFO L140 encePairwiseOnDemand]: 68/80 looper letters, 78 selfloop transitions, 12 changer transitions 2/116 dead transitions. [2024-02-02 09:17:50,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 116 transitions, 511 flow [2024-02-02 09:17:50,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-02-02 09:17:50,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.684375 [2024-02-02 09:17:50,066 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 227 flow. Second operand 4 states and 219 transitions. [2024-02-02 09:17:50,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 116 transitions, 511 flow [2024-02-02 09:17:50,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 116 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:17:50,069 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 309 flow [2024-02-02 09:17:50,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=309, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2024-02-02 09:17:50,070 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2024-02-02 09:17:50,070 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 309 flow [2024-02-02 09:17:50,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:50,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:50,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:50,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-02 09:17:50,071 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:17:50,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:50,071 INFO L85 PathProgramCache]: Analyzing trace with hash -159088843, now seen corresponding path program 1 times [2024-02-02 09:17:50,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:50,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995298483] [2024-02-02 09:17:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:50,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:50,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:50,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995298483] [2024-02-02 09:17:50,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995298483] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:50,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:50,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:17:50,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72979078] [2024-02-02 09:17:50,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:50,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:17:50,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:50,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:17:50,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:17:50,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 80 [2024-02-02 09:17:50,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:50,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:50,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 80 [2024-02-02 09:17:50,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:50,292 INFO L124 PetriNetUnfolderBase]: 355/1073 cut-off events. [2024-02-02 09:17:50,292 INFO L125 PetriNetUnfolderBase]: For 556/560 co-relation queries the response was YES. [2024-02-02 09:17:50,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2176 conditions, 1073 events. 355/1073 cut-off events. For 556/560 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7092 event pairs, 225 based on Foata normal form. 35/1064 useless extension candidates. Maximal degree in co-relation 2158. Up to 626 conditions per place. [2024-02-02 09:17:50,296 INFO L140 encePairwiseOnDemand]: 72/80 looper letters, 44 selfloop transitions, 5 changer transitions 11/101 dead transitions. [2024-02-02 09:17:50,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 101 transitions, 475 flow [2024-02-02 09:17:50,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:50,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:50,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-02-02 09:17:50,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.63125 [2024-02-02 09:17:50,297 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 309 flow. Second operand 4 states and 202 transitions. [2024-02-02 09:17:50,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 101 transitions, 475 flow [2024-02-02 09:17:50,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 101 transitions, 465 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:17:50,300 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 269 flow [2024-02-02 09:17:50,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=269, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-02-02 09:17:50,301 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -3 predicate places. [2024-02-02 09:17:50,301 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 269 flow [2024-02-02 09:17:50,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:50,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:50,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:50,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-02 09:17:50,302 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:17:50,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:50,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1280603758, now seen corresponding path program 1 times [2024-02-02 09:17:50,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:50,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726193271] [2024-02-02 09:17:50,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:50,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:50,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:50,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:50,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726193271] [2024-02-02 09:17:50,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726193271] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:50,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:50,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:17:50,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441180593] [2024-02-02 09:17:50,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:50,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:17:50,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:50,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:17:50,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:17:50,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 80 [2024-02-02 09:17:50,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:50,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:50,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 80 [2024-02-02 09:17:50,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:50,554 INFO L124 PetriNetUnfolderBase]: 302/955 cut-off events. [2024-02-02 09:17:50,554 INFO L125 PetriNetUnfolderBase]: For 269/273 co-relation queries the response was YES. [2024-02-02 09:17:50,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1926 conditions, 955 events. 302/955 cut-off events. For 269/273 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6361 event pairs, 135 based on Foata normal form. 0/909 useless extension candidates. Maximal degree in co-relation 1909. Up to 409 conditions per place. [2024-02-02 09:17:50,558 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 33 selfloop transitions, 5 changer transitions 28/103 dead transitions. [2024-02-02 09:17:50,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 103 transitions, 465 flow [2024-02-02 09:17:50,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:17:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:17:50,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 284 transitions. [2024-02-02 09:17:50,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.71 [2024-02-02 09:17:50,559 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 269 flow. Second operand 5 states and 284 transitions. [2024-02-02 09:17:50,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 103 transitions, 465 flow [2024-02-02 09:17:50,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 103 transitions, 445 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-02 09:17:50,562 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 238 flow [2024-02-02 09:17:50,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2024-02-02 09:17:50,562 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -1 predicate places. [2024-02-02 09:17:50,563 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 238 flow [2024-02-02 09:17:50,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:50,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:50,563 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] [2024-02-02 09:17:50,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-02 09:17:50,563 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:17:50,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:50,564 INFO L85 PathProgramCache]: Analyzing trace with hash 445099894, now seen corresponding path program 1 times [2024-02-02 09:17:50,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:50,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009087013] [2024-02-02 09:17:50,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:50,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:50,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:50,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009087013] [2024-02-02 09:17:50,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009087013] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:50,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:50,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:17:50,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883315133] [2024-02-02 09:17:50,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:50,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:17:50,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:50,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:17:50,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:17:50,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 80 [2024-02-02 09:17:50,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:50,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:50,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 80 [2024-02-02 09:17:50,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:50,761 INFO L124 PetriNetUnfolderBase]: 66/469 cut-off events. [2024-02-02 09:17:50,761 INFO L125 PetriNetUnfolderBase]: For 223/225 co-relation queries the response was YES. [2024-02-02 09:17:50,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 469 events. 66/469 cut-off events. For 223/225 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2867 event pairs, 22 based on Foata normal form. 14/473 useless extension candidates. Maximal degree in co-relation 851. Up to 162 conditions per place. [2024-02-02 09:17:50,763 INFO L140 encePairwiseOnDemand]: 75/80 looper letters, 24 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2024-02-02 09:17:50,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 69 transitions, 290 flow [2024-02-02 09:17:50,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2024-02-02 09:17:50,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.778125 [2024-02-02 09:17:50,764 INFO L175 Difference]: Start difference. First operand has 80 places, 67 transitions, 238 flow. Second operand 4 states and 249 transitions. [2024-02-02 09:17:50,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 69 transitions, 290 flow [2024-02-02 09:17:50,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 69 transitions, 274 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-02-02 09:17:50,766 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 216 flow [2024-02-02 09:17:50,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2024-02-02 09:17:50,767 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -6 predicate places. [2024-02-02 09:17:50,767 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 216 flow [2024-02-02 09:17:50,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:50,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:50,768 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] [2024-02-02 09:17:50,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-02 09:17:50,768 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:17:50,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:50,768 INFO L85 PathProgramCache]: Analyzing trace with hash -180050475, now seen corresponding path program 1 times [2024-02-02 09:17:50,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:50,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542548543] [2024-02-02 09:17:50,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:50,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:50,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:50,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542548543] [2024-02-02 09:17:50,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542548543] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:50,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:50,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:17:50,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911035943] [2024-02-02 09:17:50,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:50,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:17:50,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:50,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:17:50,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:17:50,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 80 [2024-02-02 09:17:50,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 56.8) internal successors, (284), 5 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:50,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:50,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 80 [2024-02-02 09:17:50,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:50,938 INFO L124 PetriNetUnfolderBase]: 64/484 cut-off events. [2024-02-02 09:17:50,938 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-02-02 09:17:50,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 484 events. 64/484 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3055 event pairs, 20 based on Foata normal form. 5/478 useless extension candidates. Maximal degree in co-relation 913. Up to 166 conditions per place. [2024-02-02 09:17:50,940 INFO L140 encePairwiseOnDemand]: 73/80 looper letters, 27 selfloop transitions, 7 changer transitions 1/75 dead transitions. [2024-02-02 09:17:50,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 75 transitions, 319 flow [2024-02-02 09:17:50,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:50,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:50,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2024-02-02 09:17:50,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.796875 [2024-02-02 09:17:50,942 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 216 flow. Second operand 4 states and 255 transitions. [2024-02-02 09:17:50,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 75 transitions, 319 flow [2024-02-02 09:17:50,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 75 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:17:50,944 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 239 flow [2024-02-02 09:17:50,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-02-02 09:17:50,944 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -4 predicate places. [2024-02-02 09:17:50,945 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 239 flow [2024-02-02 09:17:50,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.8) internal successors, (284), 5 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:50,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:50,945 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] [2024-02-02 09:17:50,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-02 09:17:50,945 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:17:50,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:50,946 INFO L85 PathProgramCache]: Analyzing trace with hash -181903238, now seen corresponding path program 1 times [2024-02-02 09:17:50,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:50,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868194081] [2024-02-02 09:17:50,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:50,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:51,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:51,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:51,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868194081] [2024-02-02 09:17:51,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868194081] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:51,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:51,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:17:51,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16619722] [2024-02-02 09:17:51,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:51,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:17:51,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:51,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:17:51,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:17:51,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 80 [2024-02-02 09:17:51,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 239 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:51,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:51,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 80 [2024-02-02 09:17:51,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:51,111 INFO L124 PetriNetUnfolderBase]: 33/345 cut-off events. [2024-02-02 09:17:51,112 INFO L125 PetriNetUnfolderBase]: For 188/188 co-relation queries the response was YES. [2024-02-02 09:17:51,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 345 events. 33/345 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1878 event pairs, 15 based on Foata normal form. 6/342 useless extension candidates. Maximal degree in co-relation 698. Up to 81 conditions per place. [2024-02-02 09:17:51,113 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 22 selfloop transitions, 6 changer transitions 2/67 dead transitions. [2024-02-02 09:17:51,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 67 transitions, 290 flow [2024-02-02 09:17:51,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:51,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:51,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2024-02-02 09:17:51,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.778125 [2024-02-02 09:17:51,114 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 239 flow. Second operand 4 states and 249 transitions. [2024-02-02 09:17:51,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 67 transitions, 290 flow [2024-02-02 09:17:51,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 67 transitions, 278 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-02-02 09:17:51,116 INFO L231 Difference]: Finished difference. Result has 78 places, 62 transitions, 224 flow [2024-02-02 09:17:51,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=78, PETRI_TRANSITIONS=62} [2024-02-02 09:17:51,117 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -3 predicate places. [2024-02-02 09:17:51,117 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 62 transitions, 224 flow [2024-02-02 09:17:51,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:51,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:51,118 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] [2024-02-02 09:17:51,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-02 09:17:51,118 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:17:51,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:51,118 INFO L85 PathProgramCache]: Analyzing trace with hash -849191126, now seen corresponding path program 1 times [2024-02-02 09:17:51,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:51,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673688999] [2024-02-02 09:17:51,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:51,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:51,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:51,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673688999] [2024-02-02 09:17:51,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673688999] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:51,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:51,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:17:51,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113096490] [2024-02-02 09:17:51,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:51,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:17:51,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:51,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:17:51,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:17:51,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 80 [2024-02-02 09:17:51,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 62 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:51,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:51,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 80 [2024-02-02 09:17:51,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:51,322 INFO L124 PetriNetUnfolderBase]: 29/266 cut-off events. [2024-02-02 09:17:51,322 INFO L125 PetriNetUnfolderBase]: For 205/207 co-relation queries the response was YES. [2024-02-02 09:17:51,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 266 events. 29/266 cut-off events. For 205/207 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1209 event pairs, 12 based on Foata normal form. 2/257 useless extension candidates. Maximal degree in co-relation 573. Up to 65 conditions per place. [2024-02-02 09:17:51,323 INFO L140 encePairwiseOnDemand]: 73/80 looper letters, 16 selfloop transitions, 5 changer transitions 17/65 dead transitions. [2024-02-02 09:17:51,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 65 transitions, 301 flow [2024-02-02 09:17:51,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:51,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:51,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 247 transitions. [2024-02-02 09:17:51,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.771875 [2024-02-02 09:17:51,324 INFO L175 Difference]: Start difference. First operand has 78 places, 62 transitions, 224 flow. Second operand 4 states and 247 transitions. [2024-02-02 09:17:51,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 65 transitions, 301 flow [2024-02-02 09:17:51,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 65 transitions, 290 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:17:51,326 INFO L231 Difference]: Finished difference. Result has 75 places, 47 transitions, 183 flow [2024-02-02 09:17:51,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=75, PETRI_TRANSITIONS=47} [2024-02-02 09:17:51,327 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -6 predicate places. [2024-02-02 09:17:51,327 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 47 transitions, 183 flow [2024-02-02 09:17:51,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:51,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:51,327 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] [2024-02-02 09:17:51,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-02 09:17:51,328 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:17:51,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:51,328 INFO L85 PathProgramCache]: Analyzing trace with hash 506918243, now seen corresponding path program 1 times [2024-02-02 09:17:51,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:51,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162103654] [2024-02-02 09:17:51,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:51,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:51,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:51,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:51,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162103654] [2024-02-02 09:17:51,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162103654] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:51,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:51,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:17:51,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169093089] [2024-02-02 09:17:51,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:51,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:17:51,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:51,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:17:51,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:17:51,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 80 [2024-02-02 09:17:51,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 47 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:51,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:51,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 80 [2024-02-02 09:17:51,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:51,522 INFO L124 PetriNetUnfolderBase]: 90/347 cut-off events. [2024-02-02 09:17:51,522 INFO L125 PetriNetUnfolderBase]: For 273/274 co-relation queries the response was YES. [2024-02-02 09:17:51,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 347 events. 90/347 cut-off events. For 273/274 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1592 event pairs, 55 based on Foata normal form. 6/342 useless extension candidates. Maximal degree in co-relation 883. Up to 140 conditions per place. [2024-02-02 09:17:51,524 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 25 selfloop transitions, 0 changer transitions 32/71 dead transitions. [2024-02-02 09:17:51,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 379 flow [2024-02-02 09:17:51,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:51,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:51,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-02-02 09:17:51,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-02-02 09:17:51,525 INFO L175 Difference]: Start difference. First operand has 75 places, 47 transitions, 183 flow. Second operand 4 states and 192 transitions. [2024-02-02 09:17:51,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 379 flow [2024-02-02 09:17:51,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 71 transitions, 356 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:17:51,527 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 136 flow [2024-02-02 09:17:51,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2024-02-02 09:17:51,528 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -18 predicate places. [2024-02-02 09:17:51,528 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 136 flow [2024-02-02 09:17:51,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:51,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:51,528 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, 1, 1, 1] [2024-02-02 09:17:51,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-02 09:17:51,529 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:17:51,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:51,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1703318972, now seen corresponding path program 1 times [2024-02-02 09:17:51,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:51,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669410680] [2024-02-02 09:17:51,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:51,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:51,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:51,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669410680] [2024-02-02 09:17:51,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669410680] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:51,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:51,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:17:51,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298780752] [2024-02-02 09:17:51,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:51,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:17:51,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:51,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:17:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:17:51,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 80 [2024-02-02 09:17:51,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:51,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:51,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 80 [2024-02-02 09:17:51,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:51,750 INFO L124 PetriNetUnfolderBase]: 54/211 cut-off events. [2024-02-02 09:17:51,750 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-02-02 09:17:51,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540 conditions, 211 events. 54/211 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 689 event pairs, 26 based on Foata normal form. 2/209 useless extension candidates. Maximal degree in co-relation 532. Up to 62 conditions per place. [2024-02-02 09:17:51,751 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2024-02-02 09:17:51,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 62 transitions, 314 flow [2024-02-02 09:17:51,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:51,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2024-02-02 09:17:51,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.590625 [2024-02-02 09:17:51,752 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 136 flow. Second operand 4 states and 189 transitions. [2024-02-02 09:17:51,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 62 transitions, 314 flow [2024-02-02 09:17:51,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 253 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-02-02 09:17:51,753 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-02-02 09:17:51,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-02-02 09:17:51,754 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -32 predicate places. [2024-02-02 09:17:51,754 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-02-02 09:17:51,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:51,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 33 remaining) [2024-02-02 09:17:51,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 33 remaining) [2024-02-02 09:17:51,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 33 remaining) [2024-02-02 09:17:51,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 33 remaining) [2024-02-02 09:17:51,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 33 remaining) [2024-02-02 09:17:51,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 33 remaining) [2024-02-02 09:17:51,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 33 remaining) [2024-02-02 09:17:51,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 33 remaining) [2024-02-02 09:17:51,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (24 of 33 remaining) [2024-02-02 09:17:51,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 33 remaining) [2024-02-02 09:17:51,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 33 remaining) [2024-02-02 09:17:51,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 33 remaining) [2024-02-02 09:17:51,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 33 remaining) [2024-02-02 09:17:51,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 33 remaining) [2024-02-02 09:17:51,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 33 remaining) [2024-02-02 09:17:51,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 33 remaining) [2024-02-02 09:17:51,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 33 remaining) [2024-02-02 09:17:51,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 33 remaining) [2024-02-02 09:17:51,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 33 remaining) [2024-02-02 09:17:51,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 33 remaining) [2024-02-02 09:17:51,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 33 remaining) [2024-02-02 09:17:51,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 33 remaining) [2024-02-02 09:17:51,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 33 remaining) [2024-02-02 09:17:51,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 33 remaining) [2024-02-02 09:17:51,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 33 remaining) [2024-02-02 09:17:51,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 33 remaining) [2024-02-02 09:17:51,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 33 remaining) [2024-02-02 09:17:51,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 33 remaining) [2024-02-02 09:17:51,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 33 remaining) [2024-02-02 09:17:51,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 33 remaining) [2024-02-02 09:17:51,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 33 remaining) [2024-02-02 09:17:51,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 33 remaining) [2024-02-02 09:17:51,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 33 remaining) [2024-02-02 09:17:51,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-02 09:17:51,761 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:51,766 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-02 09:17:51,766 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-02 09:17:51,776 INFO L503 ceAbstractionStarter]: Automizer considered 20 witness invariants [2024-02-02 09:17:51,776 INFO L504 ceAbstractionStarter]: WitnessConsidered=20 [2024-02-02 09:17:51,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:17:51 BasicIcfg [2024-02-02 09:17:51,777 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-02 09:17:51,777 INFO L158 Benchmark]: Toolchain (without parser) took 5254.34ms. Allocated memory was 155.2MB in the beginning and 276.8MB in the end (delta: 121.6MB). Free memory was 112.4MB in the beginning and 83.9MB in the end (delta: 28.5MB). Peak memory consumption was 151.2MB. Max. memory is 16.1GB. [2024-02-02 09:17:51,778 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 113.2MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:17:51,778 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 113.2MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:17:51,778 INFO L158 Benchmark]: CACSL2BoogieTranslator took 567.36ms. Allocated memory is still 155.2MB. Free memory was 111.7MB in the beginning and 87.2MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-02-02 09:17:51,778 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.86ms. Allocated memory is still 155.2MB. Free memory was 87.2MB in the beginning and 85.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:17:51,778 INFO L158 Benchmark]: Boogie Preprocessor took 52.59ms. Allocated memory is still 155.2MB. Free memory was 85.1MB in the beginning and 82.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-02 09:17:51,778 INFO L158 Benchmark]: RCFGBuilder took 494.76ms. Allocated memory is still 155.2MB. Free memory was 82.3MB in the beginning and 111.7MB in the end (delta: -29.4MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. [2024-02-02 09:17:51,778 INFO L158 Benchmark]: TraceAbstraction took 4088.43ms. Allocated memory was 155.2MB in the beginning and 276.8MB in the end (delta: 121.6MB). Free memory was 110.5MB in the beginning and 83.9MB in the end (delta: 26.6MB). Peak memory consumption was 148.1MB. Max. memory is 16.1GB. [2024-02-02 09:17:51,779 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 0.14ms. Allocated memory is still 113.2MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 113.2MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 567.36ms. Allocated memory is still 155.2MB. Free memory was 111.7MB in the beginning and 87.2MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.86ms. Allocated memory is still 155.2MB. Free memory was 87.2MB in the beginning and 85.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.59ms. Allocated memory is still 155.2MB. Free memory was 85.1MB in the beginning and 82.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 494.76ms. Allocated memory is still 155.2MB. Free memory was 82.3MB in the beginning and 111.7MB in the end (delta: -29.4MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4088.43ms. Allocated memory was 155.2MB in the beginning and 276.8MB in the end (delta: 121.6MB). Free memory was 110.5MB in the beginning and 83.9MB in the end (delta: 26.6MB). Peak memory consumption was 148.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 701]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 704]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 709]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 705]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 710]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 706]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 711]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 713]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: 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: 714]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 687]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 688]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 689]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 690]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 691]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 692]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 694]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 695]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 696]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 697]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 120 locations, 33 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: 4.0s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1227 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 776 mSDsluCounter, 241 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 86 mSDsCounter, 205 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1503 IncrementalHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 205 mSolverCounterUnsat, 155 mSDtfsCounter, 1503 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=309occurred in iteration=7, InterpolantAutomatonStates: 58, 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, 1.2s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 219 ConstructedInterpolants, 0 QuantifiedInterpolants, 1341 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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! [2024-02-02 09:17:51,813 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