./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/01b_inc-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/01b_inc-pthread.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-59af5db-m [2024-02-02 09:11:39,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:11:39,238 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:11:39,243 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:11:39,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:11:39,311 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:11:39,311 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:11:39,312 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:11:39,312 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:11:39,316 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:11:39,316 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:11:39,316 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:11:39,317 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:11:39,318 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:11:39,318 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:11:39,318 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:11:39,319 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:11:39,319 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:11:39,319 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:11:39,320 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:11:39,320 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:11:39,321 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:11:39,321 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:11:39,321 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:11:39,321 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:11:39,322 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:11:39,322 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:11:39,322 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:11:39,323 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:11:39,323 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:11:39,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:11:39,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:11:39,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:11:39,324 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:11:39,324 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:11:39,325 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:11:39,325 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:11:39,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:11:39,325 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:11:39,325 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:11:39,325 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:11:39,326 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:11:39,326 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:11:39,326 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:11:39,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:11:39,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:11:39,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:11:39,589 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:11:39,589 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:11:39,590 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i [2024-02-02 09:11:40,778 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:11:40,982 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:11:40,983 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i [2024-02-02 09:11:40,997 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/057dfca6d/3587b29f947f47978afbbfdc496da86c/FLAGe255946f2 [2024-02-02 09:11:41,026 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/057dfca6d/3587b29f947f47978afbbfdc496da86c [2024-02-02 09:11:41,028 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:11:41,029 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:11:41,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/01b_inc-pthread.yml/witness.yml [2024-02-02 09:11:41,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:11:41,148 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:11:41,150 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:11:41,150 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:11:41,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:11:41,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:11:41" (1/2) ... [2024-02-02 09:11:41,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508b675e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:41, skipping insertion in model container [2024-02-02 09:11:41,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:11:41" (1/2) ... [2024-02-02 09:11:41,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@19949551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:41, skipping insertion in model container [2024-02-02 09:11:41,156 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:41" (2/2) ... [2024-02-02 09:11:41,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508b675e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:41, skipping insertion in model container [2024-02-02 09:11:41,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:41" (2/2) ... [2024-02-02 09:11:41,158 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:11:41,207 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:11:41,208 INFO L101 nessWitnessExtractor]: Location invariant before [L691-L691] ((0U == v) && (v == 0U)) && ((unsigned long )arg == 0UL) [2024-02-02 09:11:41,208 INFO L101 nessWitnessExtractor]: Location invariant before [L699-L699] ((v <= 4294967294U) && ((unsigned long )arg == 0UL)) && (v != 4294967295U) [2024-02-02 09:11:41,208 INFO L101 nessWitnessExtractor]: Location invariant before [L698-L698] ((((1U <= (unsigned int )value) && (v <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 0U) [2024-02-02 09:11:41,208 INFO L101 nessWitnessExtractor]: Location invariant before [L700-L700] ((((((v <= 4294967294U) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && (v <= 4294967294U)) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U) [2024-02-02 09:11:41,208 INFO L101 nessWitnessExtractor]: Location invariant before [L702-L702] ((v <= 4294967294U) && ((unsigned long )arg == 0UL)) && (v != 4294967295U) [2024-02-02 09:11:41,208 INFO L101 nessWitnessExtractor]: Location invariant before [L694-L694] ((0U == v) && (v == 0U)) && ((unsigned long )arg == 0UL) [2024-02-02 09:11:41,208 INFO L101 nessWitnessExtractor]: Location invariant before [L697-L697] ((((((((((((((v <= 4294967294U) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 4294967295U)) && (1U <= (unsigned int )value)) && (v <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 0U)) && (v <= 4294967294U)) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 4294967295U) [2024-02-02 09:11:41,208 INFO L101 nessWitnessExtractor]: Location invariant before [L697-L697] ((((((((((((((v <= 4294967294U) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 4294967295U)) && (1U <= (unsigned int )value)) && (v <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 0U)) && (v <= 4294967294U)) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 4294967295U) [2024-02-02 09:11:41,209 INFO L101 nessWitnessExtractor]: Location invariant before [L700-L700] ((((((v <= 4294967294U) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && (v <= 4294967294U)) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U) [2024-02-02 09:11:41,209 INFO L101 nessWitnessExtractor]: Location invariant before [L697-L697] ((((((((((((((v <= 4294967294U) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 4294967295U)) && (1U <= (unsigned int )value)) && (v <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 0U)) && (v <= 4294967294U)) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 4294967295U) [2024-02-02 09:11:41,209 INFO L101 nessWitnessExtractor]: Location invariant before [L696-L696] (((((unsigned int )value <= 4294967294U) && (0U == v)) && (v == 0U)) && ((unsigned long )arg == 0UL)) && ((unsigned int )value != 4294967295U) [2024-02-02 09:11:41,209 INFO L101 nessWitnessExtractor]: Location invariant before [L693-L693] (((0U == v) && (v == 0U)) && ((unsigned int )value == 4294967295U)) && ((unsigned long )arg == 0UL) [2024-02-02 09:11:41,209 INFO L101 nessWitnessExtractor]: Location invariant before [L690-L690] (unsigned long )arg == 0UL [2024-02-02 09:11:41,209 INFO L101 nessWitnessExtractor]: Location invariant before [L701-L701] ((((1U <= (unsigned int )value) && (v <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 0U) [2024-02-02 09:11:41,209 INFO L101 nessWitnessExtractor]: Location invariant before [L692-L703] ((0U == v) && (v == 0U)) && ((unsigned long )arg == 0UL) [2024-02-02 09:11:41,246 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:11:41,545 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i[30747,30760] [2024-02-02 09:11:41,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:11:41,562 INFO L202 MainTranslator]: Completed pre-run 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 09:11:41,638 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i[30747,30760] Start Parsing Local [2024-02-02 09:11:41,646 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:11:41,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:11:41,685 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:11:41,686 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:41 WrapperNode [2024-02-02 09:11:41,686 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:11:41,687 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:11:41,687 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:11:41,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:11:41,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:41" (1/1) ... [2024-02-02 09:11:41,717 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:41" (1/1) ... [2024-02-02 09:11:41,734 INFO L138 Inliner]: procedures = 164, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2024-02-02 09:11:41,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:11:41,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:11:41,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:11:41,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:11:41,743 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:41" (1/1) ... [2024-02-02 09:11:41,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:41" (1/1) ... [2024-02-02 09:11:41,746 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:41" (1/1) ... [2024-02-02 09:11:41,757 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 5, 1]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-02-02 09:11:41,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:41" (1/1) ... [2024-02-02 09:11:41,758 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:41" (1/1) ... [2024-02-02 09:11:41,763 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:41" (1/1) ... [2024-02-02 09:11:41,770 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:41" (1/1) ... [2024-02-02 09:11:41,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:41" (1/1) ... [2024-02-02 09:11:41,772 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:41" (1/1) ... [2024-02-02 09:11:41,774 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:11:41,775 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:11:41,775 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:11:41,775 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:11:41,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:41" (1/1) ... [2024-02-02 09:11:41,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:11:41,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:11:41,821 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 09:11:41,825 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 09:11:41,848 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-02-02 09:11:41,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-02-02 09:11:41,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:11:41,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:11:41,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:11:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-02 09:11:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-02 09:11:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:11:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:11:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:11:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:11:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:11:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:11:41,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-02 09:11:41,850 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-02 09:11:41,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:11:41,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:11:41,851 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 09:11:41,959 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:11:41,961 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:11:42,187 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:11:42,187 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:11:42,253 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:11:42,256 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-02-02 09:11:42,256 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:11:42 BoogieIcfgContainer [2024-02-02 09:11:42,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:11:42,258 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:11:42,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:11:42,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:11:42,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:11:41" (1/4) ... [2024-02-02 09:11:42,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df7e9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:11:42, skipping insertion in model container [2024-02-02 09:11:42,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:41" (2/4) ... [2024-02-02 09:11:42,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df7e9b5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:11:42, skipping insertion in model container [2024-02-02 09:11:42,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:41" (3/4) ... [2024-02-02 09:11:42,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df7e9b5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:11:42, skipping insertion in model container [2024-02-02 09:11:42,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:11:42" (4/4) ... [2024-02-02 09:11:42,263 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc-pthread.i [2024-02-02 09:11:42,276 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:11:42,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-02-02 09:11:42,277 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:11:42,348 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 09:11:42,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 41 transitions, 86 flow [2024-02-02 09:11:42,413 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-02-02 09:11:42,413 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:11:42,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-02-02 09:11:42,417 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 41 transitions, 86 flow [2024-02-02 09:11:42,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 41 transitions, 86 flow [2024-02-02 09:11:42,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:11:42,441 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;@2e9ebfd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:11:42,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-02-02 09:11:42,444 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:11:42,445 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-02-02 09:11:42,445 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:11:42,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:42,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:11:42,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 24 more)] === [2024-02-02 09:11:42,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:42,450 INFO L85 PathProgramCache]: Analyzing trace with hash 199583646, now seen corresponding path program 1 times [2024-02-02 09:11:42,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:42,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391662598] [2024-02-02 09:11:42,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:42,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:42,892 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 09:11:42,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:42,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391662598] [2024-02-02 09:11:42,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391662598] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:42,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:42,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:11:42,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226894049] [2024-02-02 09:11:42,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:42,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:11:42,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:42,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:11:42,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:11:42,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 41 [2024-02-02 09:11:43,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:11:43,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:43,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 41 [2024-02-02 09:11:43,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:11:43,068 INFO L124 PetriNetUnfolderBase]: 23/125 cut-off events. [2024-02-02 09:11:43,068 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:11:43,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 125 events. 23/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 433 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 176. Up to 53 conditions per place. [2024-02-02 09:11:43,071 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 16 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2024-02-02 09:11:43,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 122 flow [2024-02-02 09:11:43,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:11:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:11:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-02-02 09:11:43,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7012195121951219 [2024-02-02 09:11:43,084 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 86 flow. Second operand 4 states and 115 transitions. [2024-02-02 09:11:43,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 122 flow [2024-02-02 09:11:43,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 122 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-02 09:11:43,089 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 84 flow [2024-02-02 09:11:43,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-02-02 09:11:43,093 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-02-02 09:11:43,094 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 84 flow [2024-02-02 09:11:43,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:11:43,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:43,094 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-02-02 09:11:43,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:11:43,095 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 24 more)] === [2024-02-02 09:11:43,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:43,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1892123784, now seen corresponding path program 1 times [2024-02-02 09:11:43,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:43,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747082514] [2024-02-02 09:11:43,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:43,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:11:43,124 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 09:11:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:11:43,169 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 09:11:43,169 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 09:11:43,170 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2024-02-02 09:11:43,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 27 remaining) [2024-02-02 09:11:43,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 27 remaining) [2024-02-02 09:11:43,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 27 remaining) [2024-02-02 09:11:43,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 27 remaining) [2024-02-02 09:11:43,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 27 remaining) [2024-02-02 09:11:43,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 27 remaining) [2024-02-02 09:11:43,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 27 remaining) [2024-02-02 09:11:43,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 27 remaining) [2024-02-02 09:11:43,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 27 remaining) [2024-02-02 09:11:43,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 27 remaining) [2024-02-02 09:11:43,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONERROR_FUNCTION (15 of 27 remaining) [2024-02-02 09:11:43,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 27 remaining) [2024-02-02 09:11:43,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 27 remaining) [2024-02-02 09:11:43,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 27 remaining) [2024-02-02 09:11:43,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 27 remaining) [2024-02-02 09:11:43,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 27 remaining) [2024-02-02 09:11:43,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 27 remaining) [2024-02-02 09:11:43,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 27 remaining) [2024-02-02 09:11:43,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 27 remaining) [2024-02-02 09:11:43,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 27 remaining) [2024-02-02 09:11:43,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 27 remaining) [2024-02-02 09:11:43,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 27 remaining) [2024-02-02 09:11:43,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 27 remaining) [2024-02-02 09:11:43,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONERROR_FUNCTION (2 of 27 remaining) [2024-02-02 09:11:43,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 27 remaining) [2024-02-02 09:11:43,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 27 remaining) [2024-02-02 09:11:43,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:11:43,177 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-02-02 09:11:43,179 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-02 09:11:43,179 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-02 09:11:43,210 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 09:11:43,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 77 transitions, 164 flow [2024-02-02 09:11:43,223 INFO L124 PetriNetUnfolderBase]: 2/82 cut-off events. [2024-02-02 09:11:43,223 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-02 09:11:43,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 82 events. 2/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 226 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 73. Up to 3 conditions per place. [2024-02-02 09:11:43,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 77 transitions, 164 flow [2024-02-02 09:11:43,225 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 77 transitions, 164 flow [2024-02-02 09:11:43,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:11:43,226 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;@2e9ebfd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:11:43,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2024-02-02 09:11:43,228 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:11:43,228 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-02-02 09:11:43,228 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:11:43,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:43,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:11:43,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-02-02 09:11:43,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:43,229 INFO L85 PathProgramCache]: Analyzing trace with hash 273099886, now seen corresponding path program 1 times [2024-02-02 09:11:43,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:43,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704754954] [2024-02-02 09:11:43,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:43,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:43,288 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 09:11:43,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:43,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704754954] [2024-02-02 09:11:43,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704754954] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:43,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:43,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:11:43,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359701693] [2024-02-02 09:11:43,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:43,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:11:43,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:43,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:11:43,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:11:43,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 77 [2024-02-02 09:11:43,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 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 09:11:43,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:43,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 77 [2024-02-02 09:11:43,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:11:43,562 INFO L124 PetriNetUnfolderBase]: 584/1709 cut-off events. [2024-02-02 09:11:43,562 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-02-02 09:11:43,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2697 conditions, 1709 events. 584/1709 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 13453 event pairs, 18 based on Foata normal form. 0/1312 useless extension candidates. Maximal degree in co-relation 2444. Up to 893 conditions per place. [2024-02-02 09:11:43,574 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 38 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2024-02-02 09:11:43,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 87 transitions, 269 flow [2024-02-02 09:11:43,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:11:43,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:11:43,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2024-02-02 09:11:43,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.762987012987013 [2024-02-02 09:11:43,577 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 164 flow. Second operand 4 states and 235 transitions. [2024-02-02 09:11:43,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 87 transitions, 269 flow [2024-02-02 09:11:43,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 87 transitions, 269 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-02 09:11:43,579 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 160 flow [2024-02-02 09:11:43,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2024-02-02 09:11:43,580 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -1 predicate places. [2024-02-02 09:11:43,580 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 160 flow [2024-02-02 09:11:43,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 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 09:11:43,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:43,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-02 09:11:43,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:11:43,581 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-02-02 09:11:43,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:43,581 INFO L85 PathProgramCache]: Analyzing trace with hash -123837791, now seen corresponding path program 1 times [2024-02-02 09:11:43,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:43,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226216690] [2024-02-02 09:11:43,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:43,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:43,643 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 09:11:43,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:43,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226216690] [2024-02-02 09:11:43,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226216690] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:43,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:43,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:11:43,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173951255] [2024-02-02 09:11:43,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:43,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:11:43,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:43,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:11:43,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:11:43,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 77 [2024-02-02 09:11:43,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 09:11:43,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:43,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 77 [2024-02-02 09:11:43,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:11:43,829 INFO L124 PetriNetUnfolderBase]: 710/1830 cut-off events. [2024-02-02 09:11:43,829 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-02-02 09:11:43,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3087 conditions, 1830 events. 710/1830 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 13961 event pairs, 468 based on Foata normal form. 66/1457 useless extension candidates. Maximal degree in co-relation 2695. Up to 831 conditions per place. [2024-02-02 09:11:43,839 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 39 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-02-02 09:11:43,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 83 transitions, 267 flow [2024-02-02 09:11:43,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:11:43,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:11:43,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2024-02-02 09:11:43,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7359307359307359 [2024-02-02 09:11:43,844 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 160 flow. Second operand 3 states and 170 transitions. [2024-02-02 09:11:43,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 83 transitions, 267 flow [2024-02-02 09:11:43,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 83 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:11:43,848 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 155 flow [2024-02-02 09:11:43,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2024-02-02 09:11:43,850 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -4 predicate places. [2024-02-02 09:11:43,850 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 155 flow [2024-02-02 09:11:43,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 09:11:43,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:43,851 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-02-02 09:11:43,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:11:43,851 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-02-02 09:11:43,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:43,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1215527243, now seen corresponding path program 1 times [2024-02-02 09:11:43,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:43,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137194380] [2024-02-02 09:11:43,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:43,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-02 09:11:43,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:43,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137194380] [2024-02-02 09:11:43,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137194380] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:43,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:43,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:11:43,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878421664] [2024-02-02 09:11:43,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:43,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:11:43,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:43,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:11:43,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:11:43,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 77 [2024-02-02 09:11:43,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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 09:11:43,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:43,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 77 [2024-02-02 09:11:43,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:11:44,169 INFO L124 PetriNetUnfolderBase]: 603/1689 cut-off events. [2024-02-02 09:11:44,169 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-02-02 09:11:44,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2803 conditions, 1689 events. 603/1689 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 13272 event pairs, 74 based on Foata normal form. 0/1346 useless extension candidates. Maximal degree in co-relation 2788. Up to 883 conditions per place. [2024-02-02 09:11:44,178 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 48 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2024-02-02 09:11:44,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 93 transitions, 309 flow [2024-02-02 09:11:44,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:11:44,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:11:44,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-02-02 09:11:44,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.775974025974026 [2024-02-02 09:11:44,179 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 155 flow. Second operand 4 states and 239 transitions. [2024-02-02 09:11:44,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 93 transitions, 309 flow [2024-02-02 09:11:44,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 93 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:11:44,181 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 153 flow [2024-02-02 09:11:44,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2024-02-02 09:11:44,182 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -4 predicate places. [2024-02-02 09:11:44,182 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 153 flow [2024-02-02 09:11:44,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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 09:11:44,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:44,183 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:11:44,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:11:44,183 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-02-02 09:11:44,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:44,183 INFO L85 PathProgramCache]: Analyzing trace with hash -973360831, now seen corresponding path program 1 times [2024-02-02 09:11:44,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:44,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176990256] [2024-02-02 09:11:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:44,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:44,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-02 09:11:44,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:44,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176990256] [2024-02-02 09:11:44,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176990256] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:44,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:44,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:11:44,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405210153] [2024-02-02 09:11:44,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:44,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:11:44,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:44,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:11:44,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:11:44,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 77 [2024-02-02 09:11:44,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 09:11:44,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:44,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 77 [2024-02-02 09:11:44,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:11:44,386 INFO L124 PetriNetUnfolderBase]: 701/1723 cut-off events. [2024-02-02 09:11:44,386 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-02-02 09:11:44,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2954 conditions, 1723 events. 701/1723 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 13130 event pairs, 468 based on Foata normal form. 60/1463 useless extension candidates. Maximal degree in co-relation 2939. Up to 834 conditions per place. [2024-02-02 09:11:44,393 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 38 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2024-02-02 09:11:44,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 78 transitions, 251 flow [2024-02-02 09:11:44,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:11:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:11:44,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-02-02 09:11:44,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7316017316017316 [2024-02-02 09:11:44,394 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 153 flow. Second operand 3 states and 169 transitions. [2024-02-02 09:11:44,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 78 transitions, 251 flow [2024-02-02 09:11:44,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 78 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:11:44,396 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 148 flow [2024-02-02 09:11:44,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2024-02-02 09:11:44,396 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -7 predicate places. [2024-02-02 09:11:44,397 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 148 flow [2024-02-02 09:11:44,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 09:11:44,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:44,397 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-02-02 09:11:44,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:11:44,397 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-02-02 09:11:44,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:44,398 INFO L85 PathProgramCache]: Analyzing trace with hash -973362965, now seen corresponding path program 1 times [2024-02-02 09:11:44,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:44,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767466298] [2024-02-02 09:11:44,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:44,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:11:44,405 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 09:11:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:11:44,412 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 09:11:44,412 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 09:11:44,412 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (39 of 40 remaining) [2024-02-02 09:11:44,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 40 remaining) [2024-02-02 09:11:44,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 40 remaining) [2024-02-02 09:11:44,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 40 remaining) [2024-02-02 09:11:44,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 40 remaining) [2024-02-02 09:11:44,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 40 remaining) [2024-02-02 09:11:44,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 40 remaining) [2024-02-02 09:11:44,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 40 remaining) [2024-02-02 09:11:44,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 40 remaining) [2024-02-02 09:11:44,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 40 remaining) [2024-02-02 09:11:44,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 40 remaining) [2024-02-02 09:11:44,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONERROR_FUNCTION (28 of 40 remaining) [2024-02-02 09:11:44,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 40 remaining) [2024-02-02 09:11:44,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 40 remaining) [2024-02-02 09:11:44,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 40 remaining) [2024-02-02 09:11:44,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 40 remaining) [2024-02-02 09:11:44,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 40 remaining) [2024-02-02 09:11:44,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 40 remaining) [2024-02-02 09:11:44,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 40 remaining) [2024-02-02 09:11:44,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 40 remaining) [2024-02-02 09:11:44,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 40 remaining) [2024-02-02 09:11:44,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 40 remaining) [2024-02-02 09:11:44,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 40 remaining) [2024-02-02 09:11:44,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 40 remaining) [2024-02-02 09:11:44,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONERROR_FUNCTION (15 of 40 remaining) [2024-02-02 09:11:44,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 40 remaining) [2024-02-02 09:11:44,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 40 remaining) [2024-02-02 09:11:44,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 40 remaining) [2024-02-02 09:11:44,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 40 remaining) [2024-02-02 09:11:44,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 40 remaining) [2024-02-02 09:11:44,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 40 remaining) [2024-02-02 09:11:44,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 40 remaining) [2024-02-02 09:11:44,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 40 remaining) [2024-02-02 09:11:44,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 40 remaining) [2024-02-02 09:11:44,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 40 remaining) [2024-02-02 09:11:44,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 40 remaining) [2024-02-02 09:11:44,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 40 remaining) [2024-02-02 09:11:44,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONERROR_FUNCTION (2 of 40 remaining) [2024-02-02 09:11:44,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 40 remaining) [2024-02-02 09:11:44,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 40 remaining) [2024-02-02 09:11:44,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-02 09:11:44,418 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-02-02 09:11:44,419 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-02 09:11:44,419 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-02 09:11:44,455 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 09:11:44,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 113 transitions, 244 flow [2024-02-02 09:11:44,465 INFO L124 PetriNetUnfolderBase]: 3/121 cut-off events. [2024-02-02 09:11:44,465 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-02-02 09:11:44,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 3/121 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 447 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 108. Up to 4 conditions per place. [2024-02-02 09:11:44,466 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 113 transitions, 244 flow [2024-02-02 09:11:44,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 113 transitions, 244 flow [2024-02-02 09:11:44,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:11:44,468 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;@2e9ebfd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:11:44,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-02-02 09:11:44,469 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:11:44,469 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-02-02 09:11:44,469 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:11:44,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:44,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:11:44,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-02 09:11:44,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:44,470 INFO L85 PathProgramCache]: Analyzing trace with hash 380969986, now seen corresponding path program 1 times [2024-02-02 09:11:44,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:44,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676476167] [2024-02-02 09:11:44,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:44,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:44,508 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 09:11:44,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:44,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676476167] [2024-02-02 09:11:44,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676476167] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:44,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:44,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:11:44,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355453949] [2024-02-02 09:11:44,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:44,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:11:44,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:44,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:11:44,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:11:44,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 113 [2024-02-02 09:11:44,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 113 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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 09:11:44,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:44,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 113 [2024-02-02 09:11:44,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:11:46,040 INFO L124 PetriNetUnfolderBase]: 9494/20849 cut-off events. [2024-02-02 09:11:46,040 INFO L125 PetriNetUnfolderBase]: For 961/961 co-relation queries the response was YES. [2024-02-02 09:11:46,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34488 conditions, 20849 events. 9494/20849 cut-off events. For 961/961 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 217097 event pairs, 468 based on Foata normal form. 0/16087 useless extension candidates. Maximal degree in co-relation 4427. Up to 12293 conditions per place. [2024-02-02 09:11:46,269 INFO L140 encePairwiseOnDemand]: 106/113 looper letters, 60 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-02-02 09:11:46,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 133 transitions, 420 flow [2024-02-02 09:11:46,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:11:46,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:11:46,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2024-02-02 09:11:46,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7853982300884956 [2024-02-02 09:11:46,274 INFO L175 Difference]: Start difference. First operand has 117 places, 113 transitions, 244 flow. Second operand 4 states and 355 transitions. [2024-02-02 09:11:46,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 133 transitions, 420 flow [2024-02-02 09:11:46,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 133 transitions, 416 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-02-02 09:11:46,277 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 236 flow [2024-02-02 09:11:46,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2024-02-02 09:11:46,278 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -2 predicate places. [2024-02-02 09:11:46,278 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 236 flow [2024-02-02 09:11:46,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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 09:11:46,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:46,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-02 09:11:46,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-02 09:11:46,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-02 09:11:46,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:46,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1074831874, now seen corresponding path program 1 times [2024-02-02 09:11:46,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:46,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661488600] [2024-02-02 09:11:46,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:46,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:46,310 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 09:11:46,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:46,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661488600] [2024-02-02 09:11:46,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661488600] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:46,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:46,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:11:46,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305064346] [2024-02-02 09:11:46,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:46,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:11:46,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:46,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:11:46,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:11:46,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 113 [2024-02-02 09:11:46,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 09:11:46,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:46,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 113 [2024-02-02 09:11:46,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:11:48,113 INFO L124 PetriNetUnfolderBase]: 11750/23010 cut-off events. [2024-02-02 09:11:48,113 INFO L125 PetriNetUnfolderBase]: For 3031/3031 co-relation queries the response was YES. [2024-02-02 09:11:48,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40228 conditions, 23010 events. 11750/23010 cut-off events. For 3031/3031 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 226735 event pairs, 7668 based on Foata normal form. 666/18252 useless extension candidates. Maximal degree in co-relation 37091. Up to 11631 conditions per place. [2024-02-02 09:11:48,258 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 61 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2024-02-02 09:11:48,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 129 transitions, 414 flow [2024-02-02 09:11:48,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:11:48,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:11:48,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2024-02-02 09:11:48,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7787610619469026 [2024-02-02 09:11:48,260 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 236 flow. Second operand 3 states and 264 transitions. [2024-02-02 09:11:48,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 129 transitions, 414 flow [2024-02-02 09:11:48,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 129 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:11:48,266 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 231 flow [2024-02-02 09:11:48,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2024-02-02 09:11:48,266 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -5 predicate places. [2024-02-02 09:11:48,267 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 231 flow [2024-02-02 09:11:48,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 09:11:48,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:48,267 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-02-02 09:11:48,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-02 09:11:48,267 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-02 09:11:48,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:48,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2138287019, now seen corresponding path program 1 times [2024-02-02 09:11:48,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:48,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370167550] [2024-02-02 09:11:48,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:48,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-02 09:11:48,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:48,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370167550] [2024-02-02 09:11:48,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370167550] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:48,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:48,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:11:48,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826560031] [2024-02-02 09:11:48,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:48,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:11:48,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:48,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:11:48,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:11:48,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 113 [2024-02-02 09:11:48,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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 09:11:48,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:48,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 113 [2024-02-02 09:11:48,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:11:49,915 INFO L124 PetriNetUnfolderBase]: 10074/22485 cut-off events. [2024-02-02 09:11:49,915 INFO L125 PetriNetUnfolderBase]: For 1416/1416 co-relation queries the response was YES. [2024-02-02 09:11:49,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37724 conditions, 22485 events. 10074/22485 cut-off events. For 1416/1416 co-relation queries the response was YES. Maximal size of possible extension queue 938. Compared 239649 event pairs, 218 based on Foata normal form. 0/17370 useless extension candidates. Maximal degree in co-relation 37708. Up to 13123 conditions per place. [2024-02-02 09:11:50,062 INFO L140 encePairwiseOnDemand]: 110/113 looper letters, 70 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2024-02-02 09:11:50,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 139 transitions, 456 flow [2024-02-02 09:11:50,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:11:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:11:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2024-02-02 09:11:50,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7898230088495575 [2024-02-02 09:11:50,064 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 231 flow. Second operand 4 states and 357 transitions. [2024-02-02 09:11:50,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 139 transitions, 456 flow [2024-02-02 09:11:50,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 139 transitions, 444 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:11:50,067 INFO L231 Difference]: Finished difference. Result has 112 places, 104 transitions, 229 flow [2024-02-02 09:11:50,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=112, PETRI_TRANSITIONS=104} [2024-02-02 09:11:50,069 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -5 predicate places. [2024-02-02 09:11:50,069 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 104 transitions, 229 flow [2024-02-02 09:11:50,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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 09:11:50,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:50,070 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:11:50,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-02 09:11:50,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-02 09:11:50,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:50,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1862388632, now seen corresponding path program 1 times [2024-02-02 09:11:50,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:50,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462826353] [2024-02-02 09:11:50,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:50,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-02 09:11:50,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:50,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462826353] [2024-02-02 09:11:50,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462826353] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:50,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:50,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:11:50,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261352885] [2024-02-02 09:11:50,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:50,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:11:50,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:50,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:11:50,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:11:50,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 113 [2024-02-02 09:11:50,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 104 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 09:11:50,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:50,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 113 [2024-02-02 09:11:50,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:11:51,753 INFO L124 PetriNetUnfolderBase]: 11741/22973 cut-off events. [2024-02-02 09:11:51,753 INFO L125 PetriNetUnfolderBase]: For 3150/3150 co-relation queries the response was YES. [2024-02-02 09:11:51,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40165 conditions, 22973 events. 11741/22973 cut-off events. For 3150/3150 co-relation queries the response was YES. Maximal size of possible extension queue 914. Compared 226857 event pairs, 7668 based on Foata normal form. 660/18293 useless extension candidates. Maximal degree in co-relation 40149. Up to 11634 conditions per place. [2024-02-02 09:11:51,903 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 60 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2024-02-02 09:11:51,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 124 transitions, 398 flow [2024-02-02 09:11:51,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:11:51,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:11:51,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2024-02-02 09:11:51,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.775811209439528 [2024-02-02 09:11:51,905 INFO L175 Difference]: Start difference. First operand has 112 places, 104 transitions, 229 flow. Second operand 3 states and 263 transitions. [2024-02-02 09:11:51,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 124 transitions, 398 flow [2024-02-02 09:11:51,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 124 transitions, 395 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:11:51,910 INFO L231 Difference]: Finished difference. Result has 109 places, 101 transitions, 224 flow [2024-02-02 09:11:51,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=109, PETRI_TRANSITIONS=101} [2024-02-02 09:11:51,911 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -8 predicate places. [2024-02-02 09:11:51,911 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 101 transitions, 224 flow [2024-02-02 09:11:51,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 09:11:51,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:51,912 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-02-02 09:11:51,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-02 09:11:51,912 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-02 09:11:51,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:51,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1314688317, now seen corresponding path program 1 times [2024-02-02 09:11:51,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:51,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642391511] [2024-02-02 09:11:51,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:51,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:51,964 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-02-02 09:11:51,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:51,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642391511] [2024-02-02 09:11:51,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642391511] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:51,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:51,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:11:51,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097307520] [2024-02-02 09:11:51,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:51,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:11:51,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:51,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:11:51,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:11:52,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 113 [2024-02-02 09:11:52,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 101 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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 09:11:52,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:52,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 113 [2024-02-02 09:11:52,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:11:53,537 INFO L124 PetriNetUnfolderBase]: 10011/21623 cut-off events. [2024-02-02 09:11:53,537 INFO L125 PetriNetUnfolderBase]: For 1190/1190 co-relation queries the response was YES. [2024-02-02 09:11:53,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36725 conditions, 21623 events. 10011/21623 cut-off events. For 1190/1190 co-relation queries the response was YES. Maximal size of possible extension queue 925. Compared 226518 event pairs, 515 based on Foata normal form. 0/16946 useless extension candidates. Maximal degree in co-relation 36709. Up to 12130 conditions per place. [2024-02-02 09:11:53,752 INFO L140 encePairwiseOnDemand]: 110/113 looper letters, 79 selfloop transitions, 2 changer transitions 0/144 dead transitions. [2024-02-02 09:11:53,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 144 transitions, 480 flow [2024-02-02 09:11:53,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:11:53,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:11:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2024-02-02 09:11:53,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8097345132743363 [2024-02-02 09:11:53,766 INFO L175 Difference]: Start difference. First operand has 109 places, 101 transitions, 224 flow. Second operand 4 states and 366 transitions. [2024-02-02 09:11:53,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 144 transitions, 480 flow [2024-02-02 09:11:53,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 144 transitions, 468 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:11:53,769 INFO L231 Difference]: Finished difference. Result has 109 places, 100 transitions, 222 flow [2024-02-02 09:11:53,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=109, PETRI_TRANSITIONS=100} [2024-02-02 09:11:53,770 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -8 predicate places. [2024-02-02 09:11:53,770 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 100 transitions, 222 flow [2024-02-02 09:11:53,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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 09:11:53,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:53,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:11:53,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-02 09:11:53,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-02 09:11:53,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:53,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1528582760, now seen corresponding path program 1 times [2024-02-02 09:11:53,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:53,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208604880] [2024-02-02 09:11:53,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:53,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:53,895 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 09:11:53,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:53,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208604880] [2024-02-02 09:11:53,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208604880] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:53,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:53,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:11:53,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23927854] [2024-02-02 09:11:53,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:53,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:11:53,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:53,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:11:53,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:11:54,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 113 [2024-02-02 09:11:54,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 100 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 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 09:11:54,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:54,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 113 [2024-02-02 09:11:54,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:00,582 INFO L124 PetriNetUnfolderBase]: 53632/86137 cut-off events. [2024-02-02 09:12:00,582 INFO L125 PetriNetUnfolderBase]: For 2777/2777 co-relation queries the response was YES. [2024-02-02 09:12:00,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164849 conditions, 86137 events. 53632/86137 cut-off events. For 2777/2777 co-relation queries the response was YES. Maximal size of possible extension queue 2980. Compared 784038 event pairs, 3250 based on Foata normal form. 1170/73579 useless extension candidates. Maximal degree in co-relation 158128. Up to 34008 conditions per place. [2024-02-02 09:12:01,391 INFO L140 encePairwiseOnDemand]: 90/113 looper letters, 150 selfloop transitions, 11 changer transitions 0/200 dead transitions. [2024-02-02 09:12:01,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 200 transitions, 780 flow [2024-02-02 09:12:01,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:12:01,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:12:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2024-02-02 09:12:01,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6973451327433628 [2024-02-02 09:12:01,394 INFO L175 Difference]: Start difference. First operand has 109 places, 100 transitions, 222 flow. Second operand 5 states and 394 transitions. [2024-02-02 09:12:01,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 200 transitions, 780 flow [2024-02-02 09:12:01,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 200 transitions, 771 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:12:01,398 INFO L231 Difference]: Finished difference. Result has 113 places, 109 transitions, 321 flow [2024-02-02 09:12:01,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=321, PETRI_PLACES=113, PETRI_TRANSITIONS=109} [2024-02-02 09:12:01,399 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -4 predicate places. [2024-02-02 09:12:01,399 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 109 transitions, 321 flow [2024-02-02 09:12:01,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:01,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:01,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:01,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-02 09:12:01,400 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-02 09:12:01,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:01,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1528582793, now seen corresponding path program 1 times [2024-02-02 09:12:01,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:01,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125020177] [2024-02-02 09:12:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:01,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:01,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:01,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125020177] [2024-02-02 09:12:01,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125020177] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:01,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:01,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:12:01,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518384606] [2024-02-02 09:12:01,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:01,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:12:01,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:01,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:12:01,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:12:01,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 113 [2024-02-02 09:12:01,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 321 flow. Second operand has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:01,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:01,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 113 [2024-02-02 09:12:01,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:07,629 INFO L124 PetriNetUnfolderBase]: 56846/92015 cut-off events. [2024-02-02 09:12:07,629 INFO L125 PetriNetUnfolderBase]: For 23568/24267 co-relation queries the response was YES. [2024-02-02 09:12:07,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205000 conditions, 92015 events. 56846/92015 cut-off events. For 23568/24267 co-relation queries the response was YES. Maximal size of possible extension queue 3150. Compared 845137 event pairs, 4660 based on Foata normal form. 2181/86170 useless extension candidates. Maximal degree in co-relation 197548. Up to 34260 conditions per place. [2024-02-02 09:12:08,309 INFO L140 encePairwiseOnDemand]: 90/113 looper letters, 159 selfloop transitions, 17 changer transitions 0/215 dead transitions. [2024-02-02 09:12:08,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 215 transitions, 1010 flow [2024-02-02 09:12:08,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:12:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:12:08,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2024-02-02 09:12:08,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6973451327433628 [2024-02-02 09:12:08,311 INFO L175 Difference]: Start difference. First operand has 113 places, 109 transitions, 321 flow. Second operand 5 states and 394 transitions. [2024-02-02 09:12:08,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 215 transitions, 1010 flow [2024-02-02 09:12:08,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 215 transitions, 1009 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:12:08,317 INFO L231 Difference]: Finished difference. Result has 118 places, 124 transitions, 488 flow [2024-02-02 09:12:08,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=488, PETRI_PLACES=118, PETRI_TRANSITIONS=124} [2024-02-02 09:12:08,318 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 1 predicate places. [2024-02-02 09:12:08,318 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 124 transitions, 488 flow [2024-02-02 09:12:08,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:08,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:08,318 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-02-02 09:12:08,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-02 09:12:08,319 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-02 09:12:08,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:08,319 INFO L85 PathProgramCache]: Analyzing trace with hash -2100633849, now seen corresponding path program 1 times [2024-02-02 09:12:08,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:08,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042219811] [2024-02-02 09:12:08,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:08,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:12:08,327 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 09:12:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:12:08,333 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 09:12:08,333 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 09:12:08,333 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (52 of 53 remaining) [2024-02-02 09:12:08,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 53 remaining) [2024-02-02 09:12:08,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 53 remaining) [2024-02-02 09:12:08,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 53 remaining) [2024-02-02 09:12:08,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 53 remaining) [2024-02-02 09:12:08,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 53 remaining) [2024-02-02 09:12:08,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 53 remaining) [2024-02-02 09:12:08,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 53 remaining) [2024-02-02 09:12:08,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 53 remaining) [2024-02-02 09:12:08,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 53 remaining) [2024-02-02 09:12:08,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 53 remaining) [2024-02-02 09:12:08,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONERROR_FUNCTION (41 of 53 remaining) [2024-02-02 09:12:08,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 53 remaining) [2024-02-02 09:12:08,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 53 remaining) [2024-02-02 09:12:08,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 53 remaining) [2024-02-02 09:12:08,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 53 remaining) [2024-02-02 09:12:08,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 53 remaining) [2024-02-02 09:12:08,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 53 remaining) [2024-02-02 09:12:08,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 53 remaining) [2024-02-02 09:12:08,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 53 remaining) [2024-02-02 09:12:08,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 53 remaining) [2024-02-02 09:12:08,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 53 remaining) [2024-02-02 09:12:08,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 53 remaining) [2024-02-02 09:12:08,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 53 remaining) [2024-02-02 09:12:08,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONERROR_FUNCTION (28 of 53 remaining) [2024-02-02 09:12:08,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 53 remaining) [2024-02-02 09:12:08,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 53 remaining) [2024-02-02 09:12:08,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 53 remaining) [2024-02-02 09:12:08,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 53 remaining) [2024-02-02 09:12:08,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 53 remaining) [2024-02-02 09:12:08,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 53 remaining) [2024-02-02 09:12:08,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 53 remaining) [2024-02-02 09:12:08,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 53 remaining) [2024-02-02 09:12:08,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 53 remaining) [2024-02-02 09:12:08,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 53 remaining) [2024-02-02 09:12:08,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 53 remaining) [2024-02-02 09:12:08,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 53 remaining) [2024-02-02 09:12:08,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONERROR_FUNCTION (15 of 53 remaining) [2024-02-02 09:12:08,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 53 remaining) [2024-02-02 09:12:08,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 53 remaining) [2024-02-02 09:12:08,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 53 remaining) [2024-02-02 09:12:08,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 53 remaining) [2024-02-02 09:12:08,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 53 remaining) [2024-02-02 09:12:08,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 53 remaining) [2024-02-02 09:12:08,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 53 remaining) [2024-02-02 09:12:08,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 53 remaining) [2024-02-02 09:12:08,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 53 remaining) [2024-02-02 09:12:08,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 53 remaining) [2024-02-02 09:12:08,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 53 remaining) [2024-02-02 09:12:08,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 53 remaining) [2024-02-02 09:12:08,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONERROR_FUNCTION (2 of 53 remaining) [2024-02-02 09:12:08,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 53 remaining) [2024-02-02 09:12:08,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 53 remaining) [2024-02-02 09:12:08,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-02 09:12:08,340 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:08,341 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-02 09:12:08,341 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-02-02 09:12:08,537 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 09:12:08,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 149 transitions, 326 flow [2024-02-02 09:12:08,551 INFO L124 PetriNetUnfolderBase]: 4/160 cut-off events. [2024-02-02 09:12:08,552 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-02-02 09:12:08,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 160 events. 4/160 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 684 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 143. Up to 5 conditions per place. [2024-02-02 09:12:08,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 149 transitions, 326 flow [2024-02-02 09:12:08,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 149 transitions, 326 flow [2024-02-02 09:12:08,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:12:08,557 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;@2e9ebfd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:12:08,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 66 error locations. [2024-02-02 09:12:08,558 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:12:08,558 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-02-02 09:12:08,558 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-02 09:12:08,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:08,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:12:08,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 63 more)] === [2024-02-02 09:12:08,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:08,559 INFO L85 PathProgramCache]: Analyzing trace with hash 523196186, now seen corresponding path program 1 times [2024-02-02 09:12:08,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:08,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028453394] [2024-02-02 09:12:08,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:08,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:08,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:08,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028453394] [2024-02-02 09:12:08,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028453394] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:08,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:08,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:12:08,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697395564] [2024-02-02 09:12:08,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:08,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:12:08,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:08,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:12:08,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:12:08,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 149 [2024-02-02 09:12:08,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 149 transitions, 326 flow. Second operand has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:08,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:08,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 149 [2024-02-02 09:12:08,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand