./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/36-apron_21-traces-cluster-based_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec 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/36-apron_21-traces-cluster-based_true.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/36-apron_21-traces-cluster-based_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-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:07:58,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:07:58,679 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:07:58,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:07:58,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:07:58,746 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:07:58,748 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:07:58,749 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:07:58,750 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:07:58,753 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:07:58,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:07:58,754 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:07:58,755 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:07:58,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:07:58,756 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:07:58,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:07:58,769 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:07:58,769 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:07:58,770 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:07:58,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:07:58,770 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:07:58,771 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:07:58,771 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:07:58,771 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:07:58,771 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:07:58,772 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:07:58,772 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:07:58,772 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:07:58,773 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:07:58,773 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:07:58,774 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:07:58,774 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:07:58,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:07:58,775 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:07:58,775 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:07:58,775 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:07:58,775 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:07:58,776 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:07:58,776 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:07:58,776 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:07:58,776 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:07:58,777 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:07:58,777 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:07:58,777 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:07:59,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:07:59,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:07:59,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:07:59,170 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:07:59,171 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:07:59,172 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/36-apron_21-traces-cluster-based_true.yml/witness.yml [2024-02-07 19:07:59,455 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:07:59,455 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:07:59,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-02-07 19:08:01,389 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:08:01,782 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:08:01,787 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-02-07 19:08:01,810 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45b27c885/b5eaa66a5f59491e90bdcc872f62647a/FLAG7fabede2c [2024-02-07 19:08:01,861 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45b27c885/b5eaa66a5f59491e90bdcc872f62647a [2024-02-07 19:08:01,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:08:01,863 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:08:01,867 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:08:01,867 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:08:01,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:08:01,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:07:59" (1/2) ... [2024-02-07 19:08:01,874 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ec90f1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:08:01, skipping insertion in model container [2024-02-07 19:08:01,874 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:07:59" (1/2) ... [2024-02-07 19:08:01,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@388814e4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:08:01, skipping insertion in model container [2024-02-07 19:08:01,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:08:01" (2/2) ... [2024-02-07 19:08:01,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ec90f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:01, skipping insertion in model container [2024-02-07 19:08:01,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:08:01" (2/2) ... [2024-02-07 19:08:01,886 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:08:02,051 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:08:02,052 INFO L76 edCorrectnessWitness]: Location invariant before [L695-L695] -999 <= x [2024-02-07 19:08:02,052 INFO L76 edCorrectnessWitness]: Location invariant before [L732-L732] (-1016 <= h) && (-999 <= x) [2024-02-07 19:08:02,052 INFO L76 edCorrectnessWitness]: Location invariant before [L697-L697] -999 <= x [2024-02-07 19:08:02,052 INFO L76 edCorrectnessWitness]: Location invariant before [L705-L705] -999 <= g [2024-02-07 19:08:02,053 INFO L76 edCorrectnessWitness]: Location invariant before [L733-L733] -1016 <= y [2024-02-07 19:08:02,053 INFO L76 edCorrectnessWitness]: Location invariant before [L696-L696] -999 <= h [2024-02-07 19:08:02,054 INFO L76 edCorrectnessWitness]: Location invariant before [L717-L717] (-1016 <= h) && (-999 <= x) [2024-02-07 19:08:02,054 INFO L76 edCorrectnessWitness]: Location invariant before [L712-L712] ((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL) [2024-02-07 19:08:02,054 INFO L76 edCorrectnessWitness]: Location invariant before [L716-L716] -999 <= g [2024-02-07 19:08:02,054 INFO L76 edCorrectnessWitness]: Location invariant after [L712-L712] ((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL) [2024-02-07 19:08:02,054 INFO L76 edCorrectnessWitness]: Location invariant before [L724-L724] ((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL) [2024-02-07 19:08:02,054 INFO L76 edCorrectnessWitness]: Location invariant before [L706-L706] (-1016 <= h) && (-999 <= x) [2024-02-07 19:08:02,055 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] ((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL) [2024-02-07 19:08:02,055 INFO L76 edCorrectnessWitness]: Location invariant before [L693-L693] (-1016 <= h) && (h <= 2147483630) [2024-02-07 19:08:02,055 INFO L76 edCorrectnessWitness]: Location invariant before [L737-L737] (-1016 <= y) && (-999 <= x) [2024-02-07 19:08:02,055 INFO L76 edCorrectnessWitness]: Location invariant before [L691-L691] -999 <= x [2024-02-07 19:08:02,055 INFO L76 edCorrectnessWitness]: Location invariant before [L718-L718] -1016 <= y [2024-02-07 19:08:02,055 INFO L76 edCorrectnessWitness]: Location invariant before [L720-L720] (-1016 <= y) && (-999 <= x) [2024-02-07 19:08:02,056 INFO L76 edCorrectnessWitness]: Location invariant after [L724-L724] ((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL) [2024-02-07 19:08:02,056 INFO L76 edCorrectnessWitness]: Location invariant before [L731-L731] -999 <= g [2024-02-07 19:08:02,056 INFO L76 edCorrectnessWitness]: Location invariant before [L692-L692] (-999 <= g) && (-999 <= x) [2024-02-07 19:08:02,057 INFO L76 edCorrectnessWitness]: Location invariant before [L707-L707] -1016 <= y [2024-02-07 19:08:02,057 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] ((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL) [2024-02-07 19:08:02,057 INFO L76 edCorrectnessWitness]: Location invariant before [L708-L708] (-1016 <= y) && (-999 <= x) [2024-02-07 19:08:02,057 INFO L76 edCorrectnessWitness]: Location invariant before [L734-L734] (-1016 <= y) && (-999 <= x) [2024-02-07 19:08:02,134 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:08:02,447 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/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-02-07 19:08:02,741 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:08:02,763 INFO L206 MainTranslator]: Completed pre-run [2024-02-07 19:08:02,789 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/36-apron_21-traces-cluster-based_true.i[1092,1105] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:08:02,912 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 19:08:02,920 WARN L423 MainDispatcher]: Unable to annotate x = __VERIFIER_nondet_int() with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:08:02,923 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 19:08:02,933 WARN L423 MainDispatcher]: Unable to annotate x = __VERIFIER_nondet_int() with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:08:02,938 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 19:08:02,938 WARN L423 MainDispatcher]: Unable to annotate x = __VERIFIER_nondet_int() with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:08:02,959 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:08:03,025 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:08:03,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:03 WrapperNode [2024-02-07 19:08:03,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:08:03,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:08:03,046 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:08:03,046 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:08:03,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:03" (1/1) ... [2024-02-07 19:08:03,087 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:03" (1/1) ... [2024-02-07 19:08:03,134 INFO L138 Inliner]: procedures = 166, calls = 53, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 162 [2024-02-07 19:08:03,148 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:08:03,149 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:08:03,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:08:03,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:08:03,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:03" (1/1) ... [2024-02-07 19:08:03,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:03" (1/1) ... [2024-02-07 19:08:03,194 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:03" (1/1) ... [2024-02-07 19:08:03,219 INFO L175 MemorySlicer]: Split 15 memory accesses to 6 slices as follows [2, 1, 5, 5, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5, 0, 0]. The 3 writes are split as follows [0, 1, 0, 0, 1, 1]. [2024-02-07 19:08:03,236 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:03" (1/1) ... [2024-02-07 19:08:03,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:03" (1/1) ... [2024-02-07 19:08:03,243 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:03" (1/1) ... [2024-02-07 19:08:03,254 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:03" (1/1) ... [2024-02-07 19:08:03,263 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:03" (1/1) ... [2024-02-07 19:08:03,265 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:03" (1/1) ... [2024-02-07 19:08:03,276 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:08:03,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:08:03,289 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:08:03,289 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:08:03,290 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:03" (1/1) ... [2024-02-07 19:08:03,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:08:03,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:08:03,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 19:08:03,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 19:08:03,487 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-02-07 19:08:03,487 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-02-07 19:08:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:08:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:08:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:08:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:08:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 19:08:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 19:08:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:08:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:08:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:08:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-02-07 19:08:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-02-07 19:08:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 19:08:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 19:08:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:08:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:08:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:08:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:08:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:08:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 19:08:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 19:08:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:08:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:08:03,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:08:03,508 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 19:08:03,813 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:08:03,816 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:08:04,297 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:08:04,298 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:08:04,635 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:08:04,635 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 19:08:04,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:08:04 BoogieIcfgContainer [2024-02-07 19:08:04,636 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:08:04,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:08:04,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:08:04,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:08:04,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:07:59" (1/4) ... [2024-02-07 19:08:04,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43929084 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:08:04, skipping insertion in model container [2024-02-07 19:08:04,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:08:01" (2/4) ... [2024-02-07 19:08:04,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43929084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:08:04, skipping insertion in model container [2024-02-07 19:08:04,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:03" (3/4) ... [2024-02-07 19:08:04,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43929084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:08:04, skipping insertion in model container [2024-02-07 19:08:04,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:08:04" (4/4) ... [2024-02-07 19:08:04,645 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2024-02-07 19:08:04,686 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:08:04,687 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2024-02-07 19:08:04,688 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:08:04,797 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:08:04,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 106 transitions, 224 flow [2024-02-07 19:08:04,911 INFO L124 PetriNetUnfolderBase]: 5/103 cut-off events. [2024-02-07 19:08:04,911 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:08:04,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 103 events. 5/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 319 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2024-02-07 19:08:04,930 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 106 transitions, 224 flow [2024-02-07 19:08:04,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 103 transitions, 215 flow [2024-02-07 19:08:04,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:08:04,957 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;@73185b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:08:04,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2024-02-07 19:08:04,993 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:08:04,993 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2024-02-07 19:08:04,993 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:08:04,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:04,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:04,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 39 more)] === [2024-02-07 19:08:05,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:05,000 INFO L85 PathProgramCache]: Analyzing trace with hash -602409997, now seen corresponding path program 1 times [2024-02-07 19:08:05,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:05,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198618081] [2024-02-07 19:08:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:05,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:05,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:05,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198618081] [2024-02-07 19:08:05,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198618081] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:05,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:05,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:08:05,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230733885] [2024-02-07 19:08:05,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:05,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:08:05,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:05,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:08:05,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:08:05,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 106 [2024-02-07 19:08:05,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 103 transitions, 215 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:05,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:05,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 106 [2024-02-07 19:08:05,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:17,762 INFO L124 PetriNetUnfolderBase]: 40078/74646 cut-off events. [2024-02-07 19:08:17,763 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-02-07 19:08:18,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130328 conditions, 74646 events. 40078/74646 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 1902. Compared 746199 event pairs, 14662 based on Foata normal form. 5445/72006 useless extension candidates. Maximal degree in co-relation 130317. Up to 38432 conditions per place. [2024-02-07 19:08:19,092 INFO L140 encePairwiseOnDemand]: 97/106 looper letters, 77 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2024-02-07 19:08:19,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 131 transitions, 435 flow [2024-02-07 19:08:19,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:08:19,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:08:19,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2024-02-07 19:08:19,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8018867924528302 [2024-02-07 19:08:19,127 INFO L175 Difference]: Start difference. First operand has 108 places, 103 transitions, 215 flow. Second operand 3 states and 255 transitions. [2024-02-07 19:08:19,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 131 transitions, 435 flow [2024-02-07 19:08:19,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 131 transitions, 430 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:08:19,152 INFO L231 Difference]: Finished difference. Result has 108 places, 99 transitions, 216 flow [2024-02-07 19:08:19,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=108, PETRI_TRANSITIONS=99} [2024-02-07 19:08:19,157 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 0 predicate places. [2024-02-07 19:08:19,157 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 99 transitions, 216 flow [2024-02-07 19:08:19,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:19,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:19,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:19,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:08:19,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 39 more)] === [2024-02-07 19:08:19,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:19,176 INFO L85 PathProgramCache]: Analyzing trace with hash -801844937, now seen corresponding path program 1 times [2024-02-07 19:08:19,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:19,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285719751] [2024-02-07 19:08:19,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:19,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:19,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:19,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285719751] [2024-02-07 19:08:19,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285719751] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:19,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:19,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:08:19,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850018533] [2024-02-07 19:08:19,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:19,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:08:19,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:19,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:08:19,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:08:19,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 106 [2024-02-07 19:08:19,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 99 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 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) [2024-02-07 19:08:19,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:19,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 106 [2024-02-07 19:08:19,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:25,316 INFO L124 PetriNetUnfolderBase]: 40911/73631 cut-off events. [2024-02-07 19:08:25,317 INFO L125 PetriNetUnfolderBase]: For 978/978 co-relation queries the response was YES. [2024-02-07 19:08:25,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132771 conditions, 73631 events. 40911/73631 cut-off events. For 978/978 co-relation queries the response was YES. Maximal size of possible extension queue 1756. Compared 707584 event pairs, 9519 based on Foata normal form. 978/70107 useless extension candidates. Maximal degree in co-relation 132760. Up to 43128 conditions per place. [2024-02-07 19:08:26,003 INFO L140 encePairwiseOnDemand]: 102/106 looper letters, 78 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2024-02-07 19:08:26,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 128 transitions, 436 flow [2024-02-07 19:08:26,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:08:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:08:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2024-02-07 19:08:26,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7484276729559748 [2024-02-07 19:08:26,008 INFO L175 Difference]: Start difference. First operand has 108 places, 99 transitions, 216 flow. Second operand 3 states and 238 transitions. [2024-02-07 19:08:26,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 128 transitions, 436 flow [2024-02-07 19:08:26,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 128 transitions, 432 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:08:26,284 INFO L231 Difference]: Finished difference. Result has 105 places, 96 transitions, 208 flow [2024-02-07 19:08:26,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=105, PETRI_TRANSITIONS=96} [2024-02-07 19:08:26,285 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -3 predicate places. [2024-02-07 19:08:26,285 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 96 transitions, 208 flow [2024-02-07 19:08:26,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 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) [2024-02-07 19:08:26,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:26,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:26,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:08:26,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 39 more)] === [2024-02-07 19:08:26,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:26,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1494840171, now seen corresponding path program 1 times [2024-02-07 19:08:26,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:26,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484466663] [2024-02-07 19:08:26,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:26,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:26,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:26,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484466663] [2024-02-07 19:08:26,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484466663] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:26,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:26,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:08:26,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202605330] [2024-02-07 19:08:26,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:26,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:08:26,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:26,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:08:26,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:08:26,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 106 [2024-02-07 19:08:26,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 96 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:26,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:26,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 106 [2024-02-07 19:08:26,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:31,680 INFO L124 PetriNetUnfolderBase]: 49052/84376 cut-off events. [2024-02-07 19:08:31,680 INFO L125 PetriNetUnfolderBase]: For 2746/2746 co-relation queries the response was YES. [2024-02-07 19:08:31,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156980 conditions, 84376 events. 49052/84376 cut-off events. For 2746/2746 co-relation queries the response was YES. Maximal size of possible extension queue 2114. Compared 788439 event pairs, 8319 based on Foata normal form. 0/79301 useless extension candidates. Maximal degree in co-relation 156970. Up to 48233 conditions per place. [2024-02-07 19:08:32,210 INFO L140 encePairwiseOnDemand]: 101/106 looper letters, 132 selfloop transitions, 5 changer transitions 0/184 dead transitions. [2024-02-07 19:08:32,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 184 transitions, 671 flow [2024-02-07 19:08:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:08:32,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:08:32,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 404 transitions. [2024-02-07 19:08:32,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7622641509433963 [2024-02-07 19:08:32,213 INFO L175 Difference]: Start difference. First operand has 105 places, 96 transitions, 208 flow. Second operand 5 states and 404 transitions. [2024-02-07 19:08:32,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 184 transitions, 671 flow [2024-02-07 19:08:32,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 184 transitions, 670 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:08:32,216 INFO L231 Difference]: Finished difference. Result has 111 places, 99 transitions, 239 flow [2024-02-07 19:08:32,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=111, PETRI_TRANSITIONS=99} [2024-02-07 19:08:32,217 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 3 predicate places. [2024-02-07 19:08:32,218 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 99 transitions, 239 flow [2024-02-07 19:08:32,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:32,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:32,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:32,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:08:32,219 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 39 more)] === [2024-02-07 19:08:32,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:32,219 INFO L85 PathProgramCache]: Analyzing trace with hash 912611326, now seen corresponding path program 1 times [2024-02-07 19:08:32,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:32,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197423276] [2024-02-07 19:08:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:32,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:32,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:32,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197423276] [2024-02-07 19:08:32,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197423276] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:32,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:32,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:08:32,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499313229] [2024-02-07 19:08:32,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:32,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:08:32,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:32,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:08:32,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:08:32,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 106 [2024-02-07 19:08:32,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 99 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:32,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:32,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 106 [2024-02-07 19:08:32,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:37,173 INFO L124 PetriNetUnfolderBase]: 42589/75698 cut-off events. [2024-02-07 19:08:37,174 INFO L125 PetriNetUnfolderBase]: For 9206/9206 co-relation queries the response was YES. [2024-02-07 19:08:37,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144380 conditions, 75698 events. 42589/75698 cut-off events. For 9206/9206 co-relation queries the response was YES. Maximal size of possible extension queue 1797. Compared 719188 event pairs, 9487 based on Foata normal form. 4380/75332 useless extension candidates. Maximal degree in co-relation 144366. Up to 34666 conditions per place. [2024-02-07 19:08:37,618 INFO L140 encePairwiseOnDemand]: 100/106 looper letters, 109 selfloop transitions, 3 changer transitions 0/157 dead transitions. [2024-02-07 19:08:37,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 157 transitions, 585 flow [2024-02-07 19:08:37,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:08:37,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:08:37,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2024-02-07 19:08:37,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7216981132075472 [2024-02-07 19:08:37,619 INFO L175 Difference]: Start difference. First operand has 111 places, 99 transitions, 239 flow. Second operand 4 states and 306 transitions. [2024-02-07 19:08:37,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 157 transitions, 585 flow [2024-02-07 19:08:37,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 157 transitions, 579 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:08:37,634 INFO L231 Difference]: Finished difference. Result has 108 places, 95 transitions, 225 flow [2024-02-07 19:08:37,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=108, PETRI_TRANSITIONS=95} [2024-02-07 19:08:37,635 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 0 predicate places. [2024-02-07 19:08:37,636 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 95 transitions, 225 flow [2024-02-07 19:08:37,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:37,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:37,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:37,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:08:37,637 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 39 more)] === [2024-02-07 19:08:37,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:37,637 INFO L85 PathProgramCache]: Analyzing trace with hash 904595509, now seen corresponding path program 1 times [2024-02-07 19:08:37,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:37,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840165414] [2024-02-07 19:08:37,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:37,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:37,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:37,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:37,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840165414] [2024-02-07 19:08:37,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840165414] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:37,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:37,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:08:37,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274567139] [2024-02-07 19:08:37,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:37,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:08:37,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:37,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:08:37,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:08:37,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 106 [2024-02-07 19:08:37,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 95 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:37,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:37,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 106 [2024-02-07 19:08:37,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:44,549 INFO L124 PetriNetUnfolderBase]: 49451/91113 cut-off events. [2024-02-07 19:08:44,550 INFO L125 PetriNetUnfolderBase]: For 9435/9435 co-relation queries the response was YES. [2024-02-07 19:08:45,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166944 conditions, 91113 events. 49451/91113 cut-off events. For 9435/9435 co-relation queries the response was YES. Maximal size of possible extension queue 2242. Compared 928230 event pairs, 11367 based on Foata normal form. 1830/88616 useless extension candidates. Maximal degree in co-relation 166931. Up to 32099 conditions per place. [2024-02-07 19:08:45,919 INFO L140 encePairwiseOnDemand]: 102/106 looper letters, 136 selfloop transitions, 6 changer transitions 0/188 dead transitions. [2024-02-07 19:08:45,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 188 transitions, 715 flow [2024-02-07 19:08:45,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:08:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:08:45,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 420 transitions. [2024-02-07 19:08:45,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7924528301886793 [2024-02-07 19:08:45,927 INFO L175 Difference]: Start difference. First operand has 108 places, 95 transitions, 225 flow. Second operand 5 states and 420 transitions. [2024-02-07 19:08:45,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 188 transitions, 715 flow [2024-02-07 19:08:45,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 188 transitions, 710 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:08:45,956 INFO L231 Difference]: Finished difference. Result has 113 places, 98 transitions, 258 flow [2024-02-07 19:08:45,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=113, PETRI_TRANSITIONS=98} [2024-02-07 19:08:45,959 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 5 predicate places. [2024-02-07 19:08:45,959 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 98 transitions, 258 flow [2024-02-07 19:08:45,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:45,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:45,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:45,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:08:45,960 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 39 more)] === [2024-02-07 19:08:45,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:45,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1773819367, now seen corresponding path program 1 times [2024-02-07 19:08:45,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:45,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500998230] [2024-02-07 19:08:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:45,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:46,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:46,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:46,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500998230] [2024-02-07 19:08:46,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500998230] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:46,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:46,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:08:46,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036456530] [2024-02-07 19:08:46,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:46,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:08:46,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:46,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:08:46,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:08:46,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 106 [2024-02-07 19:08:46,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 98 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:46,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:46,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 106 [2024-02-07 19:08:46,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:55,553 INFO L124 PetriNetUnfolderBase]: 55931/93199 cut-off events. [2024-02-07 19:08:55,553 INFO L125 PetriNetUnfolderBase]: For 14760/14760 co-relation queries the response was YES. [2024-02-07 19:08:56,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187520 conditions, 93199 events. 55931/93199 cut-off events. For 14760/14760 co-relation queries the response was YES. Maximal size of possible extension queue 2124. Compared 847117 event pairs, 3103 based on Foata normal form. 0/89775 useless extension candidates. Maximal degree in co-relation 187503. Up to 37520 conditions per place. [2024-02-07 19:08:56,935 INFO L140 encePairwiseOnDemand]: 101/106 looper letters, 144 selfloop transitions, 4 changer transitions 0/191 dead transitions. [2024-02-07 19:08:56,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 191 transitions, 772 flow [2024-02-07 19:08:56,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:08:56,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:08:56,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 443 transitions. [2024-02-07 19:08:56,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6965408805031447 [2024-02-07 19:08:56,947 INFO L175 Difference]: Start difference. First operand has 113 places, 98 transitions, 258 flow. Second operand 6 states and 443 transitions. [2024-02-07 19:08:56,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 191 transitions, 772 flow [2024-02-07 19:08:57,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 191 transitions, 769 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:08:57,015 INFO L231 Difference]: Finished difference. Result has 116 places, 97 transitions, 261 flow [2024-02-07 19:08:57,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=261, PETRI_PLACES=116, PETRI_TRANSITIONS=97} [2024-02-07 19:08:57,019 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 8 predicate places. [2024-02-07 19:08:57,019 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 97 transitions, 261 flow [2024-02-07 19:08:57,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:57,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:57,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:57,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:08:57,020 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 39 more)] === [2024-02-07 19:08:57,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:57,021 INFO L85 PathProgramCache]: Analyzing trace with hash -31903421, now seen corresponding path program 1 times [2024-02-07 19:08:57,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:57,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429025325] [2024-02-07 19:08:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:57,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:57,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:57,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429025325] [2024-02-07 19:08:57,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429025325] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:57,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:57,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:08:57,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670044966] [2024-02-07 19:08:57,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:57,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:08:57,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:57,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:08:57,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:08:57,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 106 [2024-02-07 19:08:57,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 97 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:08:57,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:57,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 106 [2024-02-07 19:08:57,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand