./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_51-mutexptr_racefree.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_51-mutexptr_racefree.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:07:07,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:07:07,175 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:07:07,181 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:07:07,182 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:07:07,218 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:07:07,219 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:07:07,220 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:07:07,220 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:07:07,225 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:07:07,225 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:07:07,225 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:07:07,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:07:07,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:07:07,228 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:07:07,228 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:07:07,228 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:07:07,229 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:07:07,229 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:07:07,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:07:07,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:07:07,230 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:07:07,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:07:07,230 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:07:07,231 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:07:07,231 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:07:07,231 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:07:07,232 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:07:07,232 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:07:07,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:07:07,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:07:07,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:07:07,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:07:07,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:07:07,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:07:07,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:07:07,235 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:07:07,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:07:07,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:07:07,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:07:07,236 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:07:07,236 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:07:07,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:07:07,237 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:07:07,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:07:07,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:07:07,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:07:07,551 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:07:07,552 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:07:07,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_51-mutexptr_racefree.yml/witness.yml [2024-02-07 19:07:07,647 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:07:07,648 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:07:07,648 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2024-02-07 19:07:08,911 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:07:09,167 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:07:09,167 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2024-02-07 19:07:09,181 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9703051e/2dd3490a58264b3b9a699172631547bd/FLAGf34358488 [2024-02-07 19:07:09,200 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9703051e/2dd3490a58264b3b9a699172631547bd [2024-02-07 19:07:09,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:07:09,203 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:07:09,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:07:09,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:07:09,209 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:07:09,210 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:07:07" (1/2) ... [2024-02-07 19:07:09,211 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0c26f3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:09, skipping insertion in model container [2024-02-07 19:07:09,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:07:07" (1/2) ... [2024-02-07 19:07:09,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@f30048a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:09, skipping insertion in model container [2024-02-07 19:07:09,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:07:09" (2/2) ... [2024-02-07 19:07:09,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0c26f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:09, skipping insertion in model container [2024-02-07 19:07:09,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:07:09" (2/2) ... [2024-02-07 19:07:09,214 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:07:09,279 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:07:09,280 INFO L76 edCorrectnessWitness]: Location invariant before [L716-L716] global == 0 [2024-02-07 19:07:09,280 INFO L76 edCorrectnessWitness]: Location invariant before [L706-L706] p == & global [2024-02-07 19:07:09,280 INFO L76 edCorrectnessWitness]: Location invariant before [L707-L707] p == & global [2024-02-07 19:07:09,280 INFO L76 edCorrectnessWitness]: Location invariant before [L714-L714] mp == & mutex1 [2024-02-07 19:07:09,281 INFO L76 edCorrectnessWitness]: Location invariant before [L718-L718] ((((((((((((((((((((((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5 [2024-02-07 19:07:09,281 INFO L76 edCorrectnessWitness]: Location invariant before [L713-L713] ((((((((((((((((((((((((i == 19 || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20 [2024-02-07 19:07:09,281 INFO L76 edCorrectnessWitness]: Location invariant before [L706-L706] (global == 1) && (p == & global) [2024-02-07 19:07:09,281 INFO L76 edCorrectnessWitness]: Location invariant after [L706-L706] (global == 0) && (p == & global) [2024-02-07 19:07:09,281 INFO L76 edCorrectnessWitness]: Location invariant after [L713-L713] ((((((((((((((((((((((((i == 19 || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20 [2024-02-07 19:07:09,282 INFO L76 edCorrectnessWitness]: Location invariant after [L718-L718] ((((((((((((((((((((((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5 [2024-02-07 19:07:09,282 INFO L76 edCorrectnessWitness]: Location invariant before [L708-L708] p == & global [2024-02-07 19:07:09,282 INFO L76 edCorrectnessWitness]: Location invariant before [L706-L706] (global == 1) && (p == & global) [2024-02-07 19:07:09,282 INFO L76 edCorrectnessWitness]: Location invariant after [L706-L706] (global == 0) && (p == & global) [2024-02-07 19:07:09,282 INFO L76 edCorrectnessWitness]: Location invariant before [L715-L715] mp1 == & mutex1 [2024-02-07 19:07:09,282 INFO L76 edCorrectnessWitness]: Location invariant before [L704-L704] ((((0 <= *p) && (*p <= 1)) && (mp == & mutex1)) && (p == & global)) && (*p == 0 || *p == 1) [2024-02-07 19:07:09,283 INFO L76 edCorrectnessWitness]: Location invariant before [L705-L705] (mp1 == & mutex1) && (p == & global) [2024-02-07 19:07:09,283 INFO L76 edCorrectnessWitness]: Location invariant before [L706-L706] p == & global [2024-02-07 19:07:09,283 INFO L76 edCorrectnessWitness]: Location invariant before [L706-L706] (global == 0) && (p == & global) [2024-02-07 19:07:09,283 INFO L76 edCorrectnessWitness]: Location invariant before [L706-L706] (global == 0) && (p == & global) [2024-02-07 19:07:09,283 INFO L76 edCorrectnessWitness]: Location invariant after [L706-L706] (global == 1) && (p == & global) [2024-02-07 19:07:09,283 INFO L76 edCorrectnessWitness]: Location invariant after [L716-L716] global == 0 [2024-02-07 19:07:09,284 INFO L76 edCorrectnessWitness]: Location invariant after [L706-L706] (global == 1) && (p == & global) [2024-02-07 19:07:09,339 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:07:09,672 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] [2024-02-07 19:07:09,704 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:07:09,730 INFO L206 MainTranslator]: Completed pre-run [2024-02-07 19:07:09,784 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:07:09,857 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:07:09,902 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:07:09,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:09 WrapperNode [2024-02-07 19:07:09,903 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:07:09,904 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:07:09,905 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:07:09,905 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:07:09,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:09" (1/1) ... [2024-02-07 19:07:09,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:09" (1/1) ... [2024-02-07 19:07:09,990 INFO L138 Inliner]: procedures = 171, calls = 51, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 100 [2024-02-07 19:07:09,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:07:09,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:07:09,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:07:09,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:07:10,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:09" (1/1) ... [2024-02-07 19:07:10,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:09" (1/1) ... [2024-02-07 19:07:10,017 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:09" (1/1) ... [2024-02-07 19:07:10,038 INFO L175 MemorySlicer]: Split 29 memory accesses to 5 slices as follows [2, 5, 2, 15, 5]. 52 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 0, 1, 5]. The 3 writes are split as follows [0, 0, 1, 2, 0]. [2024-02-07 19:07:10,044 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:09" (1/1) ... [2024-02-07 19:07:10,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:09" (1/1) ... [2024-02-07 19:07:10,056 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:09" (1/1) ... [2024-02-07 19:07:10,095 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:09" (1/1) ... [2024-02-07 19:07:10,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:09" (1/1) ... [2024-02-07 19:07:10,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:09" (1/1) ... [2024-02-07 19:07:10,109 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:07:10,109 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:07:10,110 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:07:10,110 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:07:10,111 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:09" (1/1) ... [2024-02-07 19:07:10,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:07:10,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:10,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 19:07:10,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 19:07:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:07:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:07:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:07:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 19:07:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 19:07:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:07:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:07:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:07:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:07:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 19:07:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:07:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:07:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:07:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 19:07:10,225 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 19:07:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:07:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:07:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:07:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:07:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:07:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 19:07:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:07:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:07:10,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:07:10,228 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 19:07:10,353 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:07:10,355 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:07:10,640 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:07:10,640 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:07:10,855 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:07:10,856 INFO L320 CfgBuilder]: Removed 10 assume(true) statements. [2024-02-07 19:07:10,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:07:10 BoogieIcfgContainer [2024-02-07 19:07:10,857 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:07:10,861 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:07:10,861 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:07:10,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:07:10,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:07:07" (1/4) ... [2024-02-07 19:07:10,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be3f87a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:07:10, skipping insertion in model container [2024-02-07 19:07:10,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:07:09" (2/4) ... [2024-02-07 19:07:10,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be3f87a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:07:10, skipping insertion in model container [2024-02-07 19:07:10,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:09" (3/4) ... [2024-02-07 19:07:10,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be3f87a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:07:10, skipping insertion in model container [2024-02-07 19:07:10,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:07:10" (4/4) ... [2024-02-07 19:07:10,869 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2024-02-07 19:07:10,887 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:07:10,888 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-02-07 19:07:10,888 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:07:10,951 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 19:07:10,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 79 transitions, 165 flow [2024-02-07 19:07:11,047 INFO L124 PetriNetUnfolderBase]: 13/105 cut-off events. [2024-02-07 19:07:11,047 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:07:11,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 105 events. 13/105 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 380 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 72. Up to 4 conditions per place. [2024-02-07 19:07:11,053 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 79 transitions, 165 flow [2024-02-07 19:07:11,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 78 transitions, 163 flow [2024-02-07 19:07:11,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:07:11,088 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;@1f8d7a68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:07:11,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-02-07 19:07:11,094 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:07:11,094 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-02-07 19:07:11,094 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:07:11,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:11,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 19:07:11,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 24 more)] === [2024-02-07 19:07:11,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:11,100 INFO L85 PathProgramCache]: Analyzing trace with hash 445583, now seen corresponding path program 1 times [2024-02-07 19:07:11,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:11,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582129193] [2024-02-07 19:07:11,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:11,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:11,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:11,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:11,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582129193] [2024-02-07 19:07:11,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582129193] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:11,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:11,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:07:11,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555668635] [2024-02-07 19:07:11,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:11,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:07:11,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:11,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:07:11,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:07:11,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 79 [2024-02-07 19:07:11,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 78 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:11,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:11,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 79 [2024-02-07 19:07:11,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:11,638 INFO L124 PetriNetUnfolderBase]: 195/732 cut-off events. [2024-02-07 19:07:11,638 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:07:11,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 732 events. 195/732 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4118 event pairs, 154 based on Foata normal form. 121/759 useless extension candidates. Maximal degree in co-relation 1141. Up to 408 conditions per place. [2024-02-07 19:07:11,646 INFO L140 encePairwiseOnDemand]: 67/79 looper letters, 44 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-02-07 19:07:11,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 265 flow [2024-02-07 19:07:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:07:11,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:07:11,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2024-02-07 19:07:11,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.729957805907173 [2024-02-07 19:07:11,660 INFO L175 Difference]: Start difference. First operand has 72 places, 78 transitions, 163 flow. Second operand 3 states and 173 transitions. [2024-02-07 19:07:11,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 265 flow [2024-02-07 19:07:11,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 83 transitions, 265 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:07:11,667 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 153 flow [2024-02-07 19:07:11,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=72, 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=3, PETRI_FLOW=153, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2024-02-07 19:07:11,672 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2024-02-07 19:07:11,672 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 153 flow [2024-02-07 19:07:11,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:11,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:11,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:07:11,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:07:11,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 24 more)] === [2024-02-07 19:07:11,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:11,674 INFO L85 PathProgramCache]: Analyzing trace with hash 428303783, now seen corresponding path program 1 times [2024-02-07 19:07:11,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:11,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363071713] [2024-02-07 19:07:11,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:11,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:11,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:11,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:11,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363071713] [2024-02-07 19:07:11,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363071713] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:11,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:11,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:07:11,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436701936] [2024-02-07 19:07:11,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:11,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:07:11,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:11,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:07:11,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:07:12,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2024-02-07 19:07:12,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:12,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:12,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2024-02-07 19:07:12,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:12,256 INFO L124 PetriNetUnfolderBase]: 249/799 cut-off events. [2024-02-07 19:07:12,257 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-02-07 19:07:12,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 799 events. 249/799 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4525 event pairs, 55 based on Foata normal form. 0/728 useless extension candidates. Maximal degree in co-relation 1372. Up to 374 conditions per place. [2024-02-07 19:07:12,264 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 60 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2024-02-07 19:07:12,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 96 transitions, 345 flow [2024-02-07 19:07:12,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:07:12,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:07:12,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-02-07 19:07:12,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170886075949367 [2024-02-07 19:07:12,271 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 153 flow. Second operand 4 states and 195 transitions. [2024-02-07 19:07:12,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 96 transitions, 345 flow [2024-02-07 19:07:12,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 96 transitions, 337 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:07:12,275 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 165 flow [2024-02-07 19:07:12,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2024-02-07 19:07:12,275 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2024-02-07 19:07:12,276 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 165 flow [2024-02-07 19:07:12,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:12,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:12,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:07:12,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:07:12,277 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 24 more)] === [2024-02-07 19:07:12,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:12,277 INFO L85 PathProgramCache]: Analyzing trace with hash 428301538, now seen corresponding path program 1 times [2024-02-07 19:07:12,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:12,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85970838] [2024-02-07 19:07:12,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:12,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:12,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:12,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:12,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85970838] [2024-02-07 19:07:12,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85970838] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:12,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:12,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:07:12,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71553610] [2024-02-07 19:07:12,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:12,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:07:12,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:12,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:07:12,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:07:12,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 79 [2024-02-07 19:07:12,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:12,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:12,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 79 [2024-02-07 19:07:12,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:12,497 INFO L124 PetriNetUnfolderBase]: 39/186 cut-off events. [2024-02-07 19:07:12,497 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-02-07 19:07:12,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 186 events. 39/186 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 583 event pairs, 22 based on Foata normal form. 14/187 useless extension candidates. Maximal degree in co-relation 312. Up to 81 conditions per place. [2024-02-07 19:07:12,500 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 30 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-02-07 19:07:12,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 207 flow [2024-02-07 19:07:12,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:07:12,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:07:12,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-02-07 19:07:12,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5759493670886076 [2024-02-07 19:07:12,503 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 165 flow. Second operand 4 states and 182 transitions. [2024-02-07 19:07:12,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 207 flow [2024-02-07 19:07:12,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 180 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-07 19:07:12,506 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 92 flow [2024-02-07 19:07:12,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2024-02-07 19:07:12,508 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -24 predicate places. [2024-02-07 19:07:12,508 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 92 flow [2024-02-07 19:07:12,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:12,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:12,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 19:07:12,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:07:12,509 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 24 more)] === [2024-02-07 19:07:12,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:12,510 INFO L85 PathProgramCache]: Analyzing trace with hash 392515885, now seen corresponding path program 1 times [2024-02-07 19:07:12,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:12,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254451330] [2024-02-07 19:07:12,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:12,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:12,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:12,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:12,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254451330] [2024-02-07 19:07:12,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254451330] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:12,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:12,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:07:12,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91053394] [2024-02-07 19:07:12,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:12,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:07:12,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:12,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:07:12,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:07:12,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 79 [2024-02-07 19:07:12,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:12,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:12,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 79 [2024-02-07 19:07:12,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:12,820 INFO L124 PetriNetUnfolderBase]: 51/182 cut-off events. [2024-02-07 19:07:12,820 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-02-07 19:07:12,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 182 events. 51/182 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 487 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 318. Up to 112 conditions per place. [2024-02-07 19:07:12,821 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 25 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2024-02-07 19:07:12,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 154 flow [2024-02-07 19:07:12,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:07:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:07:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-02-07 19:07:12,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4379746835443038 [2024-02-07 19:07:12,823 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 92 flow. Second operand 5 states and 173 transitions. [2024-02-07 19:07:12,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 154 flow [2024-02-07 19:07:12,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 149 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:07:12,824 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 85 flow [2024-02-07 19:07:12,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=85, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-02-07 19:07:12,825 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -27 predicate places. [2024-02-07 19:07:12,825 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 85 flow [2024-02-07 19:07:12,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:12,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:12,826 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-07 19:07:12,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:07:12,826 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 24 more)] === [2024-02-07 19:07:12,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:12,826 INFO L85 PathProgramCache]: Analyzing trace with hash -719067257, now seen corresponding path program 1 times [2024-02-07 19:07:12,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:12,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131643152] [2024-02-07 19:07:12,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:12,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:07:12,846 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:07:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:07:12,882 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:07:12,883 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:07:12,885 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2024-02-07 19:07:12,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 27 remaining) [2024-02-07 19:07:12,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 27 remaining) [2024-02-07 19:07:12,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 27 remaining) [2024-02-07 19:07:12,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 27 remaining) [2024-02-07 19:07:12,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (21 of 27 remaining) [2024-02-07 19:07:12,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 27 remaining) [2024-02-07 19:07:12,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 27 remaining) [2024-02-07 19:07:12,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 27 remaining) [2024-02-07 19:07:12,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 27 remaining) [2024-02-07 19:07:12,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 27 remaining) [2024-02-07 19:07:12,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 27 remaining) [2024-02-07 19:07:12,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 27 remaining) [2024-02-07 19:07:12,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 27 remaining) [2024-02-07 19:07:12,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 27 remaining) [2024-02-07 19:07:12,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 27 remaining) [2024-02-07 19:07:12,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 27 remaining) [2024-02-07 19:07:12,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 27 remaining) [2024-02-07 19:07:12,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 27 remaining) [2024-02-07 19:07:12,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 27 remaining) [2024-02-07 19:07:12,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 27 remaining) [2024-02-07 19:07:12,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 27 remaining) [2024-02-07 19:07:12,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 27 remaining) [2024-02-07 19:07:12,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 27 remaining) [2024-02-07 19:07:12,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 27 remaining) [2024-02-07 19:07:12,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 27 remaining) [2024-02-07 19:07:12,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 27 remaining) [2024-02-07 19:07:12,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:07:12,896 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-02-07 19:07:12,899 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:07:12,900 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-07 19:07:12,963 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 19:07:12,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 124 transitions, 264 flow [2024-02-07 19:07:12,991 INFO L124 PetriNetUnfolderBase]: 24/189 cut-off events. [2024-02-07 19:07:12,991 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-07 19:07:12,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 189 events. 24/189 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 862 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 122. Up to 6 conditions per place. [2024-02-07 19:07:12,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 124 transitions, 264 flow [2024-02-07 19:07:12,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 124 transitions, 264 flow [2024-02-07 19:07:13,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:07:13,002 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;@1f8d7a68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:07:13,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-02-07 19:07:13,004 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:07:13,004 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-02-07 19:07:13,004 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:07:13,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:13,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 19:07:13,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 19:07:13,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:13,006 INFO L85 PathProgramCache]: Analyzing trace with hash 568715, now seen corresponding path program 1 times [2024-02-07 19:07:13,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:13,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102481381] [2024-02-07 19:07:13,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:13,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:13,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:13,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:13,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102481381] [2024-02-07 19:07:13,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102481381] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:13,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:13,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:07:13,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503142371] [2024-02-07 19:07:13,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:13,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:07:13,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:13,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:07:13,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:07:13,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 124 [2024-02-07 19:07:13,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 124 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:13,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:13,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 124 [2024-02-07 19:07:13,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:14,786 INFO L124 PetriNetUnfolderBase]: 5943/14642 cut-off events. [2024-02-07 19:07:14,786 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2024-02-07 19:07:14,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24128 conditions, 14642 events. 5943/14642 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 138288 event pairs, 5435 based on Foata normal form. 3159/16107 useless extension candidates. Maximal degree in co-relation 14630. Up to 9393 conditions per place. [2024-02-07 19:07:14,905 INFO L140 encePairwiseOnDemand]: 106/124 looper letters, 61 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2024-02-07 19:07:14,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 124 transitions, 390 flow [2024-02-07 19:07:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:07:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:07:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2024-02-07 19:07:14,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7204301075268817 [2024-02-07 19:07:14,907 INFO L175 Difference]: Start difference. First operand has 112 places, 124 transitions, 264 flow. Second operand 3 states and 268 transitions. [2024-02-07 19:07:14,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 124 transitions, 390 flow [2024-02-07 19:07:14,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 124 transitions, 390 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:07:14,914 INFO L231 Difference]: Finished difference. Result has 115 places, 110 transitions, 246 flow [2024-02-07 19:07:14,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=115, PETRI_TRANSITIONS=110} [2024-02-07 19:07:14,917 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 3 predicate places. [2024-02-07 19:07:14,918 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 110 transitions, 246 flow [2024-02-07 19:07:14,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:14,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:14,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:07:14,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:07:14,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 19:07:14,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:14,919 INFO L85 PathProgramCache]: Analyzing trace with hash 546678926, now seen corresponding path program 1 times [2024-02-07 19:07:14,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:14,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072879115] [2024-02-07 19:07:14,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:14,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:15,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:15,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072879115] [2024-02-07 19:07:15,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072879115] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:15,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:15,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:07:15,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854666839] [2024-02-07 19:07:15,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:15,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:07:15,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:15,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:07:15,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:07:15,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 124 [2024-02-07 19:07:15,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 110 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:15,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:15,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 124 [2024-02-07 19:07:15,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:17,210 INFO L124 PetriNetUnfolderBase]: 8156/19369 cut-off events. [2024-02-07 19:07:17,211 INFO L125 PetriNetUnfolderBase]: For 663/663 co-relation queries the response was YES. [2024-02-07 19:07:17,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32922 conditions, 19369 events. 8156/19369 cut-off events. For 663/663 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 189903 event pairs, 2664 based on Foata normal form. 0/17492 useless extension candidates. Maximal degree in co-relation 29940. Up to 11272 conditions per place. [2024-02-07 19:07:17,350 INFO L140 encePairwiseOnDemand]: 117/124 looper letters, 121 selfloop transitions, 7 changer transitions 0/184 dead transitions. [2024-02-07 19:07:17,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 184 transitions, 681 flow [2024-02-07 19:07:17,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:07:17,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:07:17,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 410 transitions. [2024-02-07 19:07:17,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-02-07 19:07:17,352 INFO L175 Difference]: Start difference. First operand has 115 places, 110 transitions, 246 flow. Second operand 5 states and 410 transitions. [2024-02-07 19:07:17,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 184 transitions, 681 flow [2024-02-07 19:07:17,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 184 transitions, 677 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:07:17,357 INFO L231 Difference]: Finished difference. Result has 121 places, 116 transitions, 298 flow [2024-02-07 19:07:17,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=121, PETRI_TRANSITIONS=116} [2024-02-07 19:07:17,358 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 9 predicate places. [2024-02-07 19:07:17,358 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 116 transitions, 298 flow [2024-02-07 19:07:17,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:17,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:17,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:07:17,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:07:17,359 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 19:07:17,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:17,360 INFO L85 PathProgramCache]: Analyzing trace with hash 546676681, now seen corresponding path program 1 times [2024-02-07 19:07:17,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:17,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827200606] [2024-02-07 19:07:17,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:17,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:17,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:17,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827200606] [2024-02-07 19:07:17,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827200606] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:17,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:17,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:07:17,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838971210] [2024-02-07 19:07:17,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:17,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:07:17,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:17,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:07:17,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:07:17,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 124 [2024-02-07 19:07:17,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 116 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:17,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:17,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 124 [2024-02-07 19:07:17,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:18,747 INFO L124 PetriNetUnfolderBase]: 6107/12434 cut-off events. [2024-02-07 19:07:18,747 INFO L125 PetriNetUnfolderBase]: For 2467/2485 co-relation queries the response was YES. [2024-02-07 19:07:18,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24666 conditions, 12434 events. 6107/12434 cut-off events. For 2467/2485 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 107768 event pairs, 18 based on Foata normal form. 14/11329 useless extension candidates. Maximal degree in co-relation 22523. Up to 9095 conditions per place. [2024-02-07 19:07:18,862 INFO L140 encePairwiseOnDemand]: 120/124 looper letters, 100 selfloop transitions, 3 changer transitions 0/164 dead transitions. [2024-02-07 19:07:18,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 164 transitions, 640 flow [2024-02-07 19:07:18,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:07:18,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:07:18,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 337 transitions. [2024-02-07 19:07:18,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6794354838709677 [2024-02-07 19:07:18,865 INFO L175 Difference]: Start difference. First operand has 121 places, 116 transitions, 298 flow. Second operand 4 states and 337 transitions. [2024-02-07 19:07:18,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 164 transitions, 640 flow [2024-02-07 19:07:18,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 164 transitions, 640 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:07:18,874 INFO L231 Difference]: Finished difference. Result has 125 places, 116 transitions, 310 flow [2024-02-07 19:07:18,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=125, PETRI_TRANSITIONS=116} [2024-02-07 19:07:18,876 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 13 predicate places. [2024-02-07 19:07:18,876 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 116 transitions, 310 flow [2024-02-07 19:07:18,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:18,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:18,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 19:07:18,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 19:07:18,877 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 19:07:18,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:18,878 INFO L85 PathProgramCache]: Analyzing trace with hash -232821854, now seen corresponding path program 1 times [2024-02-07 19:07:18,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:18,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715802657] [2024-02-07 19:07:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:18,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:18,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:18,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:18,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715802657] [2024-02-07 19:07:18,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715802657] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:18,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:18,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:07:18,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104028003] [2024-02-07 19:07:18,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:18,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:07:18,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:18,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:07:18,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:07:19,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 124 [2024-02-07 19:07:19,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 116 transitions, 310 flow. Second operand has 5 states, 5 states have (on average 53.2) internal successors, (266), 5 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:19,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:19,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 124 [2024-02-07 19:07:19,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:20,891 INFO L124 PetriNetUnfolderBase]: 7299/16786 cut-off events. [2024-02-07 19:07:20,891 INFO L125 PetriNetUnfolderBase]: For 4384/4408 co-relation queries the response was YES. [2024-02-07 19:07:20,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31282 conditions, 16786 events. 7299/16786 cut-off events. For 4384/4408 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 154362 event pairs, 2341 based on Foata normal form. 232/16060 useless extension candidates. Maximal degree in co-relation 30490. Up to 10185 conditions per place. [2024-02-07 19:07:21,015 INFO L140 encePairwiseOnDemand]: 115/124 looper letters, 115 selfloop transitions, 6 changer transitions 0/173 dead transitions. [2024-02-07 19:07:21,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 173 transitions, 707 flow [2024-02-07 19:07:21,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:07:21,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:07:21,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 381 transitions. [2024-02-07 19:07:21,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.614516129032258 [2024-02-07 19:07:21,018 INFO L175 Difference]: Start difference. First operand has 125 places, 116 transitions, 310 flow. Second operand 5 states and 381 transitions. [2024-02-07 19:07:21,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 173 transitions, 707 flow [2024-02-07 19:07:21,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 173 transitions, 693 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-02-07 19:07:21,026 INFO L231 Difference]: Finished difference. Result has 121 places, 110 transitions, 298 flow [2024-02-07 19:07:21,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=121, PETRI_TRANSITIONS=110} [2024-02-07 19:07:21,028 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 9 predicate places. [2024-02-07 19:07:21,028 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 110 transitions, 298 flow [2024-02-07 19:07:21,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.2) internal successors, (266), 5 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:21,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:21,029 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:07:21,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 19:07:21,029 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 19:07:21,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:21,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1697136452, now seen corresponding path program 1 times [2024-02-07 19:07:21,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:21,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42277866] [2024-02-07 19:07:21,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:21,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 19:07:21,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:21,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42277866] [2024-02-07 19:07:21,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42277866] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:21,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:21,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:07:21,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656429123] [2024-02-07 19:07:21,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:21,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:07:21,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:21,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:07:21,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:07:21,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 124 [2024-02-07 19:07:21,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 110 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:21,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:21,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 124 [2024-02-07 19:07:21,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:23,166 INFO L124 PetriNetUnfolderBase]: 7872/16771 cut-off events. [2024-02-07 19:07:23,166 INFO L125 PetriNetUnfolderBase]: For 4389/4389 co-relation queries the response was YES. [2024-02-07 19:07:23,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32687 conditions, 16771 events. 7872/16771 cut-off events. For 4389/4389 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 150126 event pairs, 2493 based on Foata normal form. 0/15838 useless extension candidates. Maximal degree in co-relation 30707. Up to 10881 conditions per place. [2024-02-07 19:07:23,277 INFO L140 encePairwiseOnDemand]: 118/124 looper letters, 119 selfloop transitions, 8 changer transitions 0/178 dead transitions. [2024-02-07 19:07:23,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 178 transitions, 733 flow [2024-02-07 19:07:23,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:07:23,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:07:23,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 405 transitions. [2024-02-07 19:07:23,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6532258064516129 [2024-02-07 19:07:23,281 INFO L175 Difference]: Start difference. First operand has 121 places, 110 transitions, 298 flow. Second operand 5 states and 405 transitions. [2024-02-07 19:07:23,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 178 transitions, 733 flow [2024-02-07 19:07:23,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 178 transitions, 721 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:07:23,289 INFO L231 Difference]: Finished difference. Result has 125 places, 114 transitions, 335 flow [2024-02-07 19:07:23,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=125, PETRI_TRANSITIONS=114} [2024-02-07 19:07:23,291 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 13 predicate places. [2024-02-07 19:07:23,291 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 114 transitions, 335 flow [2024-02-07 19:07:23,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:23,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:23,292 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-02-07 19:07:23,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 19:07:23,292 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 19:07:23,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:23,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1697140073, now seen corresponding path program 1 times [2024-02-07 19:07:23,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:23,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938631561] [2024-02-07 19:07:23,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:23,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:23,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:23,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:23,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938631561] [2024-02-07 19:07:23,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938631561] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:07:23,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319008464] [2024-02-07 19:07:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:23,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:23,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:23,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:07:23,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 19:07:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:23,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-07 19:07:23,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:07:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:23,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:07:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:23,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319008464] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:07:23,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:07:23,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 19:07:23,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657233197] [2024-02-07 19:07:23,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:07:23,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:07:23,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:23,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:07:23,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:07:23,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 124 [2024-02-07 19:07:23,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 114 transitions, 335 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:23,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:23,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 124 [2024-02-07 19:07:23,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:24,152 INFO L124 PetriNetUnfolderBase]: 1431/3485 cut-off events. [2024-02-07 19:07:24,152 INFO L125 PetriNetUnfolderBase]: For 1624/1624 co-relation queries the response was YES. [2024-02-07 19:07:24,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6967 conditions, 3485 events. 1431/3485 cut-off events. For 1624/1624 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 25390 event pairs, 420 based on Foata normal form. 428/3741 useless extension candidates. Maximal degree in co-relation 6610. Up to 1836 conditions per place. [2024-02-07 19:07:24,174 INFO L140 encePairwiseOnDemand]: 120/124 looper letters, 92 selfloop transitions, 3 changer transitions 0/139 dead transitions. [2024-02-07 19:07:24,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 139 transitions, 641 flow [2024-02-07 19:07:24,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:07:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:07:24,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2024-02-07 19:07:24,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161290322580645 [2024-02-07 19:07:24,177 INFO L175 Difference]: Start difference. First operand has 125 places, 114 transitions, 335 flow. Second operand 5 states and 382 transitions. [2024-02-07 19:07:24,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 139 transitions, 641 flow [2024-02-07 19:07:24,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 139 transitions, 637 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:07:24,181 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 271 flow [2024-02-07 19:07:24,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=102, PETRI_TRANSITIONS=87} [2024-02-07 19:07:24,182 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -10 predicate places. [2024-02-07 19:07:24,182 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 271 flow [2024-02-07 19:07:24,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:24,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:24,183 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:07:24,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-07 19:07:24,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-02-07 19:07:24,403 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 19:07:24,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:24,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1071621793, now seen corresponding path program 1 times [2024-02-07 19:07:24,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:24,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078546776] [2024-02-07 19:07:24,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:24,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 19:07:24,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:24,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078546776] [2024-02-07 19:07:24,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078546776] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:24,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:24,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:07:24,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078028967] [2024-02-07 19:07:24,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:24,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:07:24,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:24,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:07:24,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:07:24,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 124 [2024-02-07 19:07:24,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 87 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:24,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:24,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 124 [2024-02-07 19:07:24,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:25,150 INFO L124 PetriNetUnfolderBase]: 1821/4177 cut-off events. [2024-02-07 19:07:25,150 INFO L125 PetriNetUnfolderBase]: For 1581/1581 co-relation queries the response was YES. [2024-02-07 19:07:25,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8521 conditions, 4177 events. 1821/4177 cut-off events. For 1581/1581 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 29237 event pairs, 635 based on Foata normal form. 0/4144 useless extension candidates. Maximal degree in co-relation 8057. Up to 2553 conditions per place. [2024-02-07 19:07:25,167 INFO L140 encePairwiseOnDemand]: 116/124 looper letters, 72 selfloop transitions, 6 changer transitions 0/113 dead transitions. [2024-02-07 19:07:25,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 113 transitions, 509 flow [2024-02-07 19:07:25,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:07:25,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:07:25,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 333 transitions. [2024-02-07 19:07:25,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370967741935484 [2024-02-07 19:07:25,169 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 271 flow. Second operand 5 states and 333 transitions. [2024-02-07 19:07:25,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 113 transitions, 509 flow [2024-02-07 19:07:25,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 113 transitions, 502 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:07:25,174 INFO L231 Difference]: Finished difference. Result has 98 places, 82 transitions, 268 flow [2024-02-07 19:07:25,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2024-02-07 19:07:25,175 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -14 predicate places. [2024-02-07 19:07:25,175 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 268 flow [2024-02-07 19:07:25,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:25,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:25,175 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-02-07 19:07:25,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-07 19:07:25,176 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 19:07:25,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:25,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1135981479, now seen corresponding path program 1 times [2024-02-07 19:07:25,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:25,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767752966] [2024-02-07 19:07:25,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:25,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:07:25,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:07:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:07:25,219 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:07:25,219 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:07:25,219 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2024-02-07 19:07:25,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 37 remaining) [2024-02-07 19:07:25,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 37 remaining) [2024-02-07 19:07:25,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 37 remaining) [2024-02-07 19:07:25,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 37 remaining) [2024-02-07 19:07:25,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (31 of 37 remaining) [2024-02-07 19:07:25,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 37 remaining) [2024-02-07 19:07:25,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 37 remaining) [2024-02-07 19:07:25,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 37 remaining) [2024-02-07 19:07:25,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 37 remaining) [2024-02-07 19:07:25,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 37 remaining) [2024-02-07 19:07:25,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 37 remaining) [2024-02-07 19:07:25,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 37 remaining) [2024-02-07 19:07:25,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 37 remaining) [2024-02-07 19:07:25,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 37 remaining) [2024-02-07 19:07:25,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 37 remaining) [2024-02-07 19:07:25,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 37 remaining) [2024-02-07 19:07:25,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 37 remaining) [2024-02-07 19:07:25,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 37 remaining) [2024-02-07 19:07:25,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 37 remaining) [2024-02-07 19:07:25,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 37 remaining) [2024-02-07 19:07:25,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 37 remaining) [2024-02-07 19:07:25,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 37 remaining) [2024-02-07 19:07:25,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 37 remaining) [2024-02-07 19:07:25,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 37 remaining) [2024-02-07 19:07:25,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 37 remaining) [2024-02-07 19:07:25,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 37 remaining) [2024-02-07 19:07:25,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 37 remaining) [2024-02-07 19:07:25,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 37 remaining) [2024-02-07 19:07:25,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 37 remaining) [2024-02-07 19:07:25,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 37 remaining) [2024-02-07 19:07:25,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 37 remaining) [2024-02-07 19:07:25,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 37 remaining) [2024-02-07 19:07:25,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 37 remaining) [2024-02-07 19:07:25,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 37 remaining) [2024-02-07 19:07:25,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 37 remaining) [2024-02-07 19:07:25,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 37 remaining) [2024-02-07 19:07:25,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-07 19:07:25,225 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:07:25,226 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:07:25,226 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-07 19:07:25,273 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-07 19:07:25,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 169 transitions, 365 flow [2024-02-07 19:07:25,311 INFO L124 PetriNetUnfolderBase]: 38/288 cut-off events. [2024-02-07 19:07:25,312 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-02-07 19:07:25,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 288 events. 38/288 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1453 event pairs, 1 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 202. Up to 12 conditions per place. [2024-02-07 19:07:25,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 169 transitions, 365 flow [2024-02-07 19:07:25,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 169 transitions, 365 flow [2024-02-07 19:07:25,324 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:07:25,325 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;@1f8d7a68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:07:25,325 INFO L358 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-02-07 19:07:25,326 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:07:25,327 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-02-07 19:07:25,327 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:07:25,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:25,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 19:07:25,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-02-07 19:07:25,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:25,328 INFO L85 PathProgramCache]: Analyzing trace with hash 736532, now seen corresponding path program 1 times [2024-02-07 19:07:25,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:25,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547234986] [2024-02-07 19:07:25,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:25,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:25,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:25,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547234986] [2024-02-07 19:07:25,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547234986] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:25,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:25,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:07:25,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942434593] [2024-02-07 19:07:25,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:25,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:07:25,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:25,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:07:25,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:07:25,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 169 [2024-02-07 19:07:25,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 169 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:25,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:25,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 169 [2024-02-07 19:07:25,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:48,549 INFO L124 PetriNetUnfolderBase]: 130371/257677 cut-off events. [2024-02-07 19:07:48,549 INFO L125 PetriNetUnfolderBase]: For 2425/2425 co-relation queries the response was YES. [2024-02-07 19:07:49,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439347 conditions, 257677 events. 130371/257677 cut-off events. For 2425/2425 co-relation queries the response was YES. Maximal size of possible extension queue 4908. Compared 3088621 event pairs, 84956 based on Foata normal form. 66039/299216 useless extension candidates. Maximal degree in co-relation 24446. Up to 180147 conditions per place. [2024-02-07 19:07:50,935 INFO L140 encePairwiseOnDemand]: 145/169 looper letters, 76 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2024-02-07 19:07:50,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 163 transitions, 509 flow [2024-02-07 19:07:50,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:07:50,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:07:50,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2024-02-07 19:07:50,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7120315581854043 [2024-02-07 19:07:50,937 INFO L175 Difference]: Start difference. First operand has 152 places, 169 transitions, 365 flow. Second operand 3 states and 361 transitions. [2024-02-07 19:07:50,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 163 transitions, 509 flow [2024-02-07 19:07:50,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 163 transitions, 509 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:07:50,947 INFO L231 Difference]: Finished difference. Result has 155 places, 149 transitions, 335 flow [2024-02-07 19:07:50,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=335, PETRI_PLACES=155, PETRI_TRANSITIONS=149} [2024-02-07 19:07:50,948 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 3 predicate places. [2024-02-07 19:07:50,949 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 149 transitions, 335 flow [2024-02-07 19:07:50,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:50,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:50,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:07:50,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-07 19:07:50,950 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-02-07 19:07:50,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:50,950 INFO L85 PathProgramCache]: Analyzing trace with hash 708000546, now seen corresponding path program 1 times [2024-02-07 19:07:50,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:50,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942140129] [2024-02-07 19:07:50,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:50,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:51,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:51,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:51,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942140129] [2024-02-07 19:07:51,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942140129] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:51,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:51,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:07:51,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126917296] [2024-02-07 19:07:51,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:51,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:07:51,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:51,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:07:51,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:07:51,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 169 [2024-02-07 19:07:51,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 149 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:51,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:51,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 169 [2024-02-07 19:07:51,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand