./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 958ec4d9 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-dev-958ec4d-m [2024-02-07 14:27:29,074 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:27:29,137 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:27:29,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:27:29,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:27:29,162 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:27:29,163 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:27:29,163 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:27:29,164 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:27:29,167 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:27:29,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:27:29,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:27:29,169 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:27:29,170 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:27:29,170 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:27:29,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:27:29,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:27:29,171 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:27:29,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:27:29,171 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:27:29,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:27:29,173 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:27:29,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:27:29,173 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:27:29,173 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:27:29,173 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:27:29,174 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:27:29,174 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:27:29,174 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:27:29,175 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:27:29,175 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:27:29,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:27:29,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:27:29,176 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:27:29,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:27:29,176 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:27:29,176 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:27:29,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:27:29,177 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:27:29,177 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:27:29,177 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:27:29,177 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:27:29,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:27:29,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:27:29,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:27:29,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:27:29,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:27:29,402 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:27:29,403 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:27:29,404 INFO L431 ainManager$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 14:27:30,514 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:27:30,746 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:27:30,746 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2024-02-07 14:27:30,756 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c89a70a3b/472efed181f74ad584865d3303c11b5c/FLAGd751c2a02 [2024-02-07 14:27:30,766 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c89a70a3b/472efed181f74ad584865d3303c11b5c [2024-02-07 14:27:30,768 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:27:30,768 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:27:30,769 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_51-mutexptr_racefree.yml/witness.yml [2024-02-07 14:27:30,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:27:30,850 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:27:30,852 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:27:30,852 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:27:30,856 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:27:30,856 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:27:30" (1/2) ... [2024-02-07 14:27:30,857 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@299d6bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:30, skipping insertion in model container [2024-02-07 14:27:30,857 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:27:30" (1/2) ... [2024-02-07 14:27:30,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ae08e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:30, skipping insertion in model container [2024-02-07 14:27:30,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:27:30" (2/2) ... [2024-02-07 14:27:30,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@299d6bfa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:30, skipping insertion in model container [2024-02-07 14:27:30,859 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:27:30" (2/2) ... [2024-02-07 14:27:30,859 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:27:30,905 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:27:30,906 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 14:27:30,907 INFO L76 edCorrectnessWitness]: Location invariant after [L706-L706] (global == 1) && (p == & global) [2024-02-07 14:27:30,907 INFO L76 edCorrectnessWitness]: Location invariant before [L706-L706] (global == 0) && (p == & global) [2024-02-07 14:27:30,907 INFO L76 edCorrectnessWitness]: Location invariant after [L706-L706] (global == 0) && (p == & global) [2024-02-07 14:27:30,907 INFO L76 edCorrectnessWitness]: Location invariant before [L704-L704] ((((0 <= *p) && (*p <= 1)) && (mp == & mutex1)) && (p == & global)) && (*p == 0 || *p == 1) [2024-02-07 14:27:30,908 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 14:27:30,908 INFO L76 edCorrectnessWitness]: Location invariant before [L706-L706] p == & global [2024-02-07 14:27:30,908 INFO L76 edCorrectnessWitness]: Location invariant before [L716-L716] global == 0 [2024-02-07 14:27:30,908 INFO L76 edCorrectnessWitness]: Location invariant before [L715-L715] mp1 == & mutex1 [2024-02-07 14:27:30,908 INFO L76 edCorrectnessWitness]: Location invariant before [L706-L706] (global == 1) && (p == & global) [2024-02-07 14:27:30,908 INFO L76 edCorrectnessWitness]: Location invariant before [L705-L705] (mp1 == & mutex1) && (p == & global) [2024-02-07 14:27:30,909 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 14:27:30,909 INFO L76 edCorrectnessWitness]: Location invariant before [L706-L706] (global == 1) && (p == & global) [2024-02-07 14:27:30,909 INFO L76 edCorrectnessWitness]: Location invariant after [L706-L706] (global == 0) && (p == & global) [2024-02-07 14:27:30,909 INFO L76 edCorrectnessWitness]: Location invariant before [L708-L708] p == & global [2024-02-07 14:27:30,909 INFO L76 edCorrectnessWitness]: Location invariant after [L706-L706] (global == 1) && (p == & global) [2024-02-07 14:27:30,909 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 14:27:30,909 INFO L76 edCorrectnessWitness]: Location invariant before [L706-L706] p == & global [2024-02-07 14:27:30,909 INFO L76 edCorrectnessWitness]: Location invariant before [L707-L707] p == & global [2024-02-07 14:27:30,910 INFO L76 edCorrectnessWitness]: Location invariant before [L714-L714] mp == & mutex1 [2024-02-07 14:27:30,910 INFO L76 edCorrectnessWitness]: Location invariant after [L716-L716] global == 0 [2024-02-07 14:27:30,910 INFO L76 edCorrectnessWitness]: Location invariant before [L706-L706] (global == 0) && (p == & global) [2024-02-07 14:27:30,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:27:31,197 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 14:27:31,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:27:31,229 INFO L203 MainTranslator]: Completed pre-run [2024-02-07 14:27:31,253 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 14:27:31,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:27:31,349 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:27:31,349 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31 WrapperNode [2024-02-07 14:27:31,349 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:27:31,350 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:27:31,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:27:31,350 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:27:31,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,397 INFO L138 Inliner]: procedures = 171, calls = 51, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 100 [2024-02-07 14:27:31,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:27:31,398 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:27:31,398 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:27:31,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:27:31,405 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,409 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,421 INFO L175 MemorySlicer]: Split 29 memory accesses to 5 slices as follows [2, 15, 5, 2, 5]. 52 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 1, 5, 0, 5]. The 3 writes are split as follows [0, 2, 0, 1, 0]. [2024-02-07 14:27:31,426 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,427 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,434 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,440 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,442 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,446 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:27:31,447 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:27:31,447 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:27:31,448 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:27:31,458 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:27:31,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:27:31,488 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 14:27:31,491 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 14:27:31,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:27:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:27:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:27:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:27:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:27:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:27:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:27:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:27:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:27:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:27:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:27:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:27:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:27:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 14:27:31,535 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 14:27:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:27:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:27:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:27:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:27:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:27:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:27:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:27:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:27:31,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:27:31,539 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 14:27:31,697 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:27:31,699 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:27:32,051 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:27:32,051 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:27:32,195 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:27:32,195 INFO L320 CfgBuilder]: Removed 10 assume(true) statements. [2024-02-07 14:27:32,196 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:27:32 BoogieIcfgContainer [2024-02-07 14:27:32,196 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:27:32,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:27:32,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:27:32,201 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:27:32,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:27:30" (1/4) ... [2024-02-07 14:27:32,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d6f687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:27:32, skipping insertion in model container [2024-02-07 14:27:32,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:27:30" (2/4) ... [2024-02-07 14:27:32,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d6f687 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:27:32, skipping insertion in model container [2024-02-07 14:27:32,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (3/4) ... [2024-02-07 14:27:32,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d6f687 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:27:32, skipping insertion in model container [2024-02-07 14:27:32,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:27:32" (4/4) ... [2024-02-07 14:27:32,205 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2024-02-07 14:27:32,219 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:27:32,219 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-02-07 14:27:32,219 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:27:32,255 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 14:27:32,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 79 transitions, 165 flow [2024-02-07 14:27:32,305 INFO L124 PetriNetUnfolderBase]: 13/105 cut-off events. [2024-02-07 14:27:32,305 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 14:27:32,309 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 14:27:32,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 79 transitions, 165 flow [2024-02-07 14:27:32,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 78 transitions, 163 flow [2024-02-07 14:27:32,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:27:32,323 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;@fd628d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:27:32,324 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-02-07 14:27:32,326 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:27:32,326 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-02-07 14:27:32,326 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:32,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:32,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 14:27:32,327 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 14:27:32,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:32,331 INFO L85 PathProgramCache]: Analyzing trace with hash 445583, now seen corresponding path program 1 times [2024-02-07 14:27:32,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:32,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451274066] [2024-02-07 14:27:32,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:32,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:32,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:32,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:32,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451274066] [2024-02-07 14:27:32,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451274066] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:32,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:32,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:32,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874634052] [2024-02-07 14:27:32,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:32,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:27:32,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:32,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:27:32,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:27:32,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 79 [2024-02-07 14:27:32,546 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 14:27:32,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:32,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 79 [2024-02-07 14:27:32,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:32,790 INFO L124 PetriNetUnfolderBase]: 195/732 cut-off events. [2024-02-07 14:27:32,790 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 14:27:32,794 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 14:27:32,799 INFO L140 encePairwiseOnDemand]: 67/79 looper letters, 44 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-02-07 14:27:32,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 265 flow [2024-02-07 14:27:32,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:27:32,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:27:32,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2024-02-07 14:27:32,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.729957805907173 [2024-02-07 14:27:32,814 INFO L175 Difference]: Start difference. First operand has 72 places, 78 transitions, 163 flow. Second operand 3 states and 173 transitions. [2024-02-07 14:27:32,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 265 flow [2024-02-07 14:27:32,819 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 14:27:32,823 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 153 flow [2024-02-07 14:27:32,825 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 14:27:32,829 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2024-02-07 14:27:32,829 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 153 flow [2024-02-07 14:27:32,830 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 14:27:32,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:32,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:27:32,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:27:32,831 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 14:27:32,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:32,857 INFO L85 PathProgramCache]: Analyzing trace with hash 428303783, now seen corresponding path program 1 times [2024-02-07 14:27:32,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:32,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148059136] [2024-02-07 14:27:32,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:32,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:33,076 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 14:27:33,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:33,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148059136] [2024-02-07 14:27:33,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148059136] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:33,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:33,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:33,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938770046] [2024-02-07 14:27:33,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:33,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:33,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:33,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:33,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:33,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2024-02-07 14:27:33,159 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 14:27:33,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:33,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2024-02-07 14:27:33,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:33,329 INFO L124 PetriNetUnfolderBase]: 249/799 cut-off events. [2024-02-07 14:27:33,329 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-02-07 14:27:33,331 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 14:27:33,335 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 60 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2024-02-07 14:27:33,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 96 transitions, 345 flow [2024-02-07 14:27:33,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:27:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:27:33,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-02-07 14:27:33,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170886075949367 [2024-02-07 14:27:33,341 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 153 flow. Second operand 4 states and 195 transitions. [2024-02-07 14:27:33,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 96 transitions, 345 flow [2024-02-07 14:27:33,342 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 14:27:33,344 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 165 flow [2024-02-07 14:27:33,344 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 14:27:33,345 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2024-02-07 14:27:33,345 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 165 flow [2024-02-07 14:27:33,345 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 14:27:33,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:33,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:27:33,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:27:33,346 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 14:27:33,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash 428301538, now seen corresponding path program 1 times [2024-02-07 14:27:33,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:33,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756211563] [2024-02-07 14:27:33,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:33,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:33,425 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 14:27:33,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:33,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756211563] [2024-02-07 14:27:33,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756211563] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:33,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:33,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:33,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48796885] [2024-02-07 14:27:33,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:33,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:33,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:33,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:33,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:33,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 79 [2024-02-07 14:27:33,429 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 14:27:33,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:33,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 79 [2024-02-07 14:27:33,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:33,479 INFO L124 PetriNetUnfolderBase]: 39/186 cut-off events. [2024-02-07 14:27:33,479 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-02-07 14:27:33,479 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 14:27:33,480 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 30 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-02-07 14:27:33,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 207 flow [2024-02-07 14:27:33,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:27:33,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:27:33,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-02-07 14:27:33,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5759493670886076 [2024-02-07 14:27:33,482 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 165 flow. Second operand 4 states and 182 transitions. [2024-02-07 14:27:33,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 207 flow [2024-02-07 14:27:33,482 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 14:27:33,483 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 92 flow [2024-02-07 14:27:33,483 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 14:27:33,484 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -24 predicate places. [2024-02-07 14:27:33,484 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 92 flow [2024-02-07 14:27:33,484 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 14:27:33,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:33,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 14:27:33,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:27:33,485 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 14:27:33,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:33,485 INFO L85 PathProgramCache]: Analyzing trace with hash 392515885, now seen corresponding path program 1 times [2024-02-07 14:27:33,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:33,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780063144] [2024-02-07 14:27:33,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:33,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:33,546 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 14:27:33,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:33,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780063144] [2024-02-07 14:27:33,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780063144] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:33,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:33,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:27:33,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931043646] [2024-02-07 14:27:33,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:33,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:27:33,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:33,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:27:33,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:27:33,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 79 [2024-02-07 14:27:33,630 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 14:27:33,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:33,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 79 [2024-02-07 14:27:33,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:33,689 INFO L124 PetriNetUnfolderBase]: 51/182 cut-off events. [2024-02-07 14:27:33,689 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-02-07 14:27:33,689 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 14:27:33,690 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 25 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2024-02-07 14:27:33,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 154 flow [2024-02-07 14:27:33,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:27:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:27:33,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-02-07 14:27:33,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4379746835443038 [2024-02-07 14:27:33,691 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 92 flow. Second operand 5 states and 173 transitions. [2024-02-07 14:27:33,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 154 flow [2024-02-07 14:27:33,692 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 14:27:33,693 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 85 flow [2024-02-07 14:27:33,693 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 14:27:33,693 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -27 predicate places. [2024-02-07 14:27:33,694 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 85 flow [2024-02-07 14:27:33,694 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 14:27:33,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:33,694 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-07 14:27:33,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:27:33,694 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 14:27:33,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:33,695 INFO L85 PathProgramCache]: Analyzing trace with hash -719067257, now seen corresponding path program 1 times [2024-02-07 14:27:33,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:33,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154778029] [2024-02-07 14:27:33,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:33,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:27:33,712 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:27:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:27:33,749 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:27:33,749 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:27:33,750 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2024-02-07 14:27:33,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 27 remaining) [2024-02-07 14:27:33,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 27 remaining) [2024-02-07 14:27:33,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 27 remaining) [2024-02-07 14:27:33,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 27 remaining) [2024-02-07 14:27:33,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (21 of 27 remaining) [2024-02-07 14:27:33,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 27 remaining) [2024-02-07 14:27:33,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 27 remaining) [2024-02-07 14:27:33,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 27 remaining) [2024-02-07 14:27:33,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 27 remaining) [2024-02-07 14:27:33,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 27 remaining) [2024-02-07 14:27:33,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 27 remaining) [2024-02-07 14:27:33,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 27 remaining) [2024-02-07 14:27:33,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 27 remaining) [2024-02-07 14:27:33,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 27 remaining) [2024-02-07 14:27:33,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 27 remaining) [2024-02-07 14:27:33,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 27 remaining) [2024-02-07 14:27:33,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 27 remaining) [2024-02-07 14:27:33,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 27 remaining) [2024-02-07 14:27:33,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 27 remaining) [2024-02-07 14:27:33,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 27 remaining) [2024-02-07 14:27:33,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 27 remaining) [2024-02-07 14:27:33,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 27 remaining) [2024-02-07 14:27:33,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 27 remaining) [2024-02-07 14:27:33,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 27 remaining) [2024-02-07 14:27:33,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 27 remaining) [2024-02-07 14:27:33,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 27 remaining) [2024-02-07 14:27:33,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:27:33,762 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-02-07 14:27:33,764 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 14:27:33,764 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-07 14:27:33,813 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 14:27:33,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 124 transitions, 264 flow [2024-02-07 14:27:33,836 INFO L124 PetriNetUnfolderBase]: 24/189 cut-off events. [2024-02-07 14:27:33,837 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-07 14:27:33,838 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 14:27:33,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 124 transitions, 264 flow [2024-02-07 14:27:33,840 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 124 transitions, 264 flow [2024-02-07 14:27:33,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:27:33,841 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;@fd628d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:27:33,841 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-02-07 14:27:33,842 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:27:33,842 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-02-07 14:27:33,843 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:33,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:33,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 14:27:33,843 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 14:27:33,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:33,843 INFO L85 PathProgramCache]: Analyzing trace with hash 568715, now seen corresponding path program 1 times [2024-02-07 14:27:33,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:33,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040360824] [2024-02-07 14:27:33,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:33,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:33,858 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 14:27:33,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:33,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040360824] [2024-02-07 14:27:33,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040360824] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:33,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:33,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:33,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162084315] [2024-02-07 14:27:33,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:33,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:27:33,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:33,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:27:33,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:27:33,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 124 [2024-02-07 14:27:33,862 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 14:27:33,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:33,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 124 [2024-02-07 14:27:33,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:35,077 INFO L124 PetriNetUnfolderBase]: 5943/14642 cut-off events. [2024-02-07 14:27:35,077 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2024-02-07 14:27:35,094 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 14:27:35,149 INFO L140 encePairwiseOnDemand]: 106/124 looper letters, 61 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2024-02-07 14:27:35,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 124 transitions, 390 flow [2024-02-07 14:27:35,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:27:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:27:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2024-02-07 14:27:35,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7204301075268817 [2024-02-07 14:27:35,151 INFO L175 Difference]: Start difference. First operand has 112 places, 124 transitions, 264 flow. Second operand 3 states and 268 transitions. [2024-02-07 14:27:35,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 124 transitions, 390 flow [2024-02-07 14:27:35,155 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 14:27:35,157 INFO L231 Difference]: Finished difference. Result has 115 places, 110 transitions, 246 flow [2024-02-07 14:27:35,157 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 14:27:35,159 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 3 predicate places. [2024-02-07 14:27:35,159 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 110 transitions, 246 flow [2024-02-07 14:27:35,159 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 14:27:35,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:35,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:27:35,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:27:35,160 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 14:27:35,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:35,160 INFO L85 PathProgramCache]: Analyzing trace with hash 546678926, now seen corresponding path program 1 times [2024-02-07 14:27:35,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:35,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494808349] [2024-02-07 14:27:35,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:35,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:35,241 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 14:27:35,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:35,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494808349] [2024-02-07 14:27:35,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494808349] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:35,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:35,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:35,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319284806] [2024-02-07 14:27:35,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:35,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:35,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:35,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:35,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:35,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 124 [2024-02-07 14:27:35,332 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 14:27:35,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:35,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 124 [2024-02-07 14:27:35,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:36,987 INFO L124 PetriNetUnfolderBase]: 8156/19369 cut-off events. [2024-02-07 14:27:36,988 INFO L125 PetriNetUnfolderBase]: For 663/663 co-relation queries the response was YES. [2024-02-07 14:27:37,024 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 14:27:37,078 INFO L140 encePairwiseOnDemand]: 117/124 looper letters, 121 selfloop transitions, 7 changer transitions 0/184 dead transitions. [2024-02-07 14:27:37,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 184 transitions, 681 flow [2024-02-07 14:27:37,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:27:37,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:27:37,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 410 transitions. [2024-02-07 14:27:37,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-02-07 14:27:37,082 INFO L175 Difference]: Start difference. First operand has 115 places, 110 transitions, 246 flow. Second operand 5 states and 410 transitions. [2024-02-07 14:27:37,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 184 transitions, 681 flow [2024-02-07 14:27:37,084 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 14:27:37,087 INFO L231 Difference]: Finished difference. Result has 121 places, 116 transitions, 298 flow [2024-02-07 14:27:37,087 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 14:27:37,089 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 9 predicate places. [2024-02-07 14:27:37,089 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 116 transitions, 298 flow [2024-02-07 14:27:37,089 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 14:27:37,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:37,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:27:37,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:27:37,090 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 14:27:37,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:37,090 INFO L85 PathProgramCache]: Analyzing trace with hash 546676681, now seen corresponding path program 1 times [2024-02-07 14:27:37,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:37,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798570027] [2024-02-07 14:27:37,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:37,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:37,143 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 14:27:37,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:37,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798570027] [2024-02-07 14:27:37,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798570027] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:37,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:37,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:37,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960592991] [2024-02-07 14:27:37,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:37,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:37,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:37,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:37,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 124 [2024-02-07 14:27:37,149 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 14:27:37,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:37,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 124 [2024-02-07 14:27:37,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:38,219 INFO L124 PetriNetUnfolderBase]: 6107/12434 cut-off events. [2024-02-07 14:27:38,219 INFO L125 PetriNetUnfolderBase]: For 2467/2485 co-relation queries the response was YES. [2024-02-07 14:27:38,234 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 14:27:38,267 INFO L140 encePairwiseOnDemand]: 120/124 looper letters, 100 selfloop transitions, 3 changer transitions 0/164 dead transitions. [2024-02-07 14:27:38,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 164 transitions, 640 flow [2024-02-07 14:27:38,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:27:38,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:27:38,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 337 transitions. [2024-02-07 14:27:38,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6794354838709677 [2024-02-07 14:27:38,269 INFO L175 Difference]: Start difference. First operand has 121 places, 116 transitions, 298 flow. Second operand 4 states and 337 transitions. [2024-02-07 14:27:38,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 164 transitions, 640 flow [2024-02-07 14:27:38,271 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 14:27:38,272 INFO L231 Difference]: Finished difference. Result has 125 places, 116 transitions, 310 flow [2024-02-07 14:27:38,273 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 14:27:38,273 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 13 predicate places. [2024-02-07 14:27:38,273 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 116 transitions, 310 flow [2024-02-07 14:27:38,273 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 14:27:38,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:38,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 14:27:38,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:27:38,274 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 14:27:38,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:38,274 INFO L85 PathProgramCache]: Analyzing trace with hash -232821854, now seen corresponding path program 1 times [2024-02-07 14:27:38,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:38,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463784120] [2024-02-07 14:27:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:38,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:38,335 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 14:27:38,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:38,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463784120] [2024-02-07 14:27:38,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463784120] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:38,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:38,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:27:38,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774980523] [2024-02-07 14:27:38,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:38,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:27:38,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:38,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:27:38,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:27:38,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 124 [2024-02-07 14:27:38,411 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 14:27:38,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:38,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 124 [2024-02-07 14:27:38,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:39,546 INFO L124 PetriNetUnfolderBase]: 7299/16786 cut-off events. [2024-02-07 14:27:39,546 INFO L125 PetriNetUnfolderBase]: For 4384/4408 co-relation queries the response was YES. [2024-02-07 14:27:39,587 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 14:27:39,641 INFO L140 encePairwiseOnDemand]: 115/124 looper letters, 115 selfloop transitions, 6 changer transitions 0/173 dead transitions. [2024-02-07 14:27:39,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 173 transitions, 707 flow [2024-02-07 14:27:39,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:27:39,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:27:39,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 381 transitions. [2024-02-07 14:27:39,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.614516129032258 [2024-02-07 14:27:39,643 INFO L175 Difference]: Start difference. First operand has 125 places, 116 transitions, 310 flow. Second operand 5 states and 381 transitions. [2024-02-07 14:27:39,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 173 transitions, 707 flow [2024-02-07 14:27:39,646 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 14:27:39,648 INFO L231 Difference]: Finished difference. Result has 121 places, 110 transitions, 298 flow [2024-02-07 14:27:39,648 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 14:27:39,648 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 9 predicate places. [2024-02-07 14:27:39,648 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 110 transitions, 298 flow [2024-02-07 14:27:39,649 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 14:27:39,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:39,649 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:39,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:27:39,649 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 14:27:39,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:39,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1697136452, now seen corresponding path program 1 times [2024-02-07 14:27:39,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:39,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823347112] [2024-02-07 14:27:39,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:39,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:39,724 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 14:27:39,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:39,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823347112] [2024-02-07 14:27:39,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823347112] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:39,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:39,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:39,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111217025] [2024-02-07 14:27:39,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:39,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:39,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:39,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:39,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:39,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 124 [2024-02-07 14:27:39,812 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 14:27:39,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:39,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 124 [2024-02-07 14:27:39,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:40,930 INFO L124 PetriNetUnfolderBase]: 7872/16771 cut-off events. [2024-02-07 14:27:40,931 INFO L125 PetriNetUnfolderBase]: For 4389/4389 co-relation queries the response was YES. [2024-02-07 14:27:40,969 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 14:27:41,026 INFO L140 encePairwiseOnDemand]: 118/124 looper letters, 119 selfloop transitions, 8 changer transitions 0/178 dead transitions. [2024-02-07 14:27:41,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 178 transitions, 733 flow [2024-02-07 14:27:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:27:41,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:27:41,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 405 transitions. [2024-02-07 14:27:41,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6532258064516129 [2024-02-07 14:27:41,028 INFO L175 Difference]: Start difference. First operand has 121 places, 110 transitions, 298 flow. Second operand 5 states and 405 transitions. [2024-02-07 14:27:41,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 178 transitions, 733 flow [2024-02-07 14:27:41,032 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 14:27:41,033 INFO L231 Difference]: Finished difference. Result has 125 places, 114 transitions, 335 flow [2024-02-07 14:27:41,033 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 14:27:41,034 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 13 predicate places. [2024-02-07 14:27:41,034 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 114 transitions, 335 flow [2024-02-07 14:27:41,035 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 14:27:41,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:41,035 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-02-07 14:27:41,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 14:27:41,035 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 14:27:41,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:41,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1697140073, now seen corresponding path program 1 times [2024-02-07 14:27:41,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:41,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697924015] [2024-02-07 14:27:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:41,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:41,098 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 14:27:41,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:41,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697924015] [2024-02-07 14:27:41,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697924015] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:27:41,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867261287] [2024-02-07 14:27:41,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:41,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:27:41,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:27:41,117 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 14:27:41,192 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 14:27:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:41,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-07 14:27:41,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:27:41,314 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 14:27:41,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:27:41,331 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 14:27:41,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867261287] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:27:41,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:27:41,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 14:27:41,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227950428] [2024-02-07 14:27:41,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:27:41,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:27:41,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:41,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:27:41,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:27:41,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 124 [2024-02-07 14:27:41,337 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 14:27:41,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:41,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 124 [2024-02-07 14:27:41,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:41,676 INFO L124 PetriNetUnfolderBase]: 1431/3485 cut-off events. [2024-02-07 14:27:41,677 INFO L125 PetriNetUnfolderBase]: For 1624/1624 co-relation queries the response was YES. [2024-02-07 14:27:41,682 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 14:27:41,689 INFO L140 encePairwiseOnDemand]: 120/124 looper letters, 92 selfloop transitions, 3 changer transitions 0/139 dead transitions. [2024-02-07 14:27:41,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 139 transitions, 641 flow [2024-02-07 14:27:41,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:27:41,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:27:41,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2024-02-07 14:27:41,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161290322580645 [2024-02-07 14:27:41,691 INFO L175 Difference]: Start difference. First operand has 125 places, 114 transitions, 335 flow. Second operand 5 states and 382 transitions. [2024-02-07 14:27:41,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 139 transitions, 641 flow [2024-02-07 14:27:41,693 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 14:27:41,694 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 271 flow [2024-02-07 14:27:41,695 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 14:27:41,696 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -10 predicate places. [2024-02-07 14:27:41,696 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 271 flow [2024-02-07 14:27:41,696 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 14:27:41,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:41,696 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:41,722 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 14:27:41,908 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 14:27:41,909 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 14:27:41,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:41,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1071621793, now seen corresponding path program 1 times [2024-02-07 14:27:41,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:41,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250823668] [2024-02-07 14:27:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:41,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:41,990 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 14:27:41,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:41,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250823668] [2024-02-07 14:27:41,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250823668] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:41,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:41,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:27:41,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692704657] [2024-02-07 14:27:41,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:41,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:27:41,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:41,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:27:41,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:27:42,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 124 [2024-02-07 14:27:42,063 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 14:27:42,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:42,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 124 [2024-02-07 14:27:42,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:42,472 INFO L124 PetriNetUnfolderBase]: 1821/4177 cut-off events. [2024-02-07 14:27:42,473 INFO L125 PetriNetUnfolderBase]: For 1581/1581 co-relation queries the response was YES. [2024-02-07 14:27:42,481 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 14:27:42,493 INFO L140 encePairwiseOnDemand]: 116/124 looper letters, 72 selfloop transitions, 6 changer transitions 0/113 dead transitions. [2024-02-07 14:27:42,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 113 transitions, 509 flow [2024-02-07 14:27:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:27:42,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:27:42,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 333 transitions. [2024-02-07 14:27:42,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370967741935484 [2024-02-07 14:27:42,495 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 271 flow. Second operand 5 states and 333 transitions. [2024-02-07 14:27:42,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 113 transitions, 509 flow [2024-02-07 14:27:42,498 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 14:27:42,499 INFO L231 Difference]: Finished difference. Result has 98 places, 82 transitions, 268 flow [2024-02-07 14:27:42,500 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 14:27:42,500 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -14 predicate places. [2024-02-07 14:27:42,500 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 268 flow [2024-02-07 14:27:42,500 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 14:27:42,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:42,501 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-02-07 14:27:42,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-07 14:27:42,501 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 14:27:42,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:42,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1135981479, now seen corresponding path program 1 times [2024-02-07 14:27:42,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:42,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299408107] [2024-02-07 14:27:42,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:42,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:27:42,513 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:27:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:27:42,523 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:27:42,524 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:27:42,524 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2024-02-07 14:27:42,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 37 remaining) [2024-02-07 14:27:42,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 37 remaining) [2024-02-07 14:27:42,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 37 remaining) [2024-02-07 14:27:42,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 37 remaining) [2024-02-07 14:27:42,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (31 of 37 remaining) [2024-02-07 14:27:42,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 37 remaining) [2024-02-07 14:27:42,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 37 remaining) [2024-02-07 14:27:42,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 37 remaining) [2024-02-07 14:27:42,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 37 remaining) [2024-02-07 14:27:42,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 37 remaining) [2024-02-07 14:27:42,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 37 remaining) [2024-02-07 14:27:42,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 37 remaining) [2024-02-07 14:27:42,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 37 remaining) [2024-02-07 14:27:42,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 37 remaining) [2024-02-07 14:27:42,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 37 remaining) [2024-02-07 14:27:42,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 37 remaining) [2024-02-07 14:27:42,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 37 remaining) [2024-02-07 14:27:42,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 37 remaining) [2024-02-07 14:27:42,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 37 remaining) [2024-02-07 14:27:42,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 37 remaining) [2024-02-07 14:27:42,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 37 remaining) [2024-02-07 14:27:42,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 37 remaining) [2024-02-07 14:27:42,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 37 remaining) [2024-02-07 14:27:42,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 37 remaining) [2024-02-07 14:27:42,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 37 remaining) [2024-02-07 14:27:42,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 37 remaining) [2024-02-07 14:27:42,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 37 remaining) [2024-02-07 14:27:42,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 37 remaining) [2024-02-07 14:27:42,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 37 remaining) [2024-02-07 14:27:42,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 37 remaining) [2024-02-07 14:27:42,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 37 remaining) [2024-02-07 14:27:42,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 37 remaining) [2024-02-07 14:27:42,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 37 remaining) [2024-02-07 14:27:42,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 37 remaining) [2024-02-07 14:27:42,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 37 remaining) [2024-02-07 14:27:42,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 37 remaining) [2024-02-07 14:27:42,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-07 14:27:42,529 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:42,530 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 14:27:42,530 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-07 14:27:42,561 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-07 14:27:42,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 169 transitions, 365 flow [2024-02-07 14:27:42,587 INFO L124 PetriNetUnfolderBase]: 38/288 cut-off events. [2024-02-07 14:27:42,588 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-02-07 14:27:42,590 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 14:27:42,590 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 169 transitions, 365 flow [2024-02-07 14:27:42,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 169 transitions, 365 flow [2024-02-07 14:27:42,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:27:42,593 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;@fd628d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:27:42,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-02-07 14:27:42,595 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:27:42,595 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-02-07 14:27:42,595 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:42,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:42,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 14:27:42,595 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 14:27:42,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:42,596 INFO L85 PathProgramCache]: Analyzing trace with hash 736532, now seen corresponding path program 1 times [2024-02-07 14:27:42,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:42,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185859667] [2024-02-07 14:27:42,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:42,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:42,609 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 14:27:42,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:42,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185859667] [2024-02-07 14:27:42,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185859667] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:42,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:42,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:42,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275054082] [2024-02-07 14:27:42,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:42,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:27:42,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:42,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:27:42,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:27:42,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 169 [2024-02-07 14:27:42,613 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 14:27:42,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:42,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 169 [2024-02-07 14:27:42,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:28:04,061 INFO L124 PetriNetUnfolderBase]: 130371/257677 cut-off events. [2024-02-07 14:28:04,062 INFO L125 PetriNetUnfolderBase]: For 2425/2425 co-relation queries the response was YES. [2024-02-07 14:28:04,644 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 14:28:05,662 INFO L140 encePairwiseOnDemand]: 145/169 looper letters, 76 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2024-02-07 14:28:05,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 163 transitions, 509 flow [2024-02-07 14:28:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:28:05,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:28:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2024-02-07 14:28:05,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7120315581854043 [2024-02-07 14:28:05,668 INFO L175 Difference]: Start difference. First operand has 152 places, 169 transitions, 365 flow. Second operand 3 states and 361 transitions. [2024-02-07 14:28:05,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 163 transitions, 509 flow [2024-02-07 14:28:05,671 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 14:28:05,673 INFO L231 Difference]: Finished difference. Result has 155 places, 149 transitions, 335 flow [2024-02-07 14:28:05,673 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 14:28:05,674 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 3 predicate places. [2024-02-07 14:28:05,674 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 149 transitions, 335 flow [2024-02-07 14:28:05,674 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 14:28:05,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:28:05,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:28:05,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-07 14:28:05,675 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 14:28:05,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:28:05,675 INFO L85 PathProgramCache]: Analyzing trace with hash 708000546, now seen corresponding path program 1 times [2024-02-07 14:28:05,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:28:05,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98333843] [2024-02-07 14:28:05,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:05,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:28:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:28:05,750 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 14:28:05,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:28:05,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98333843] [2024-02-07 14:28:05,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98333843] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:28:05,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:28:05,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:28:05,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296615573] [2024-02-07 14:28:05,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:28:05,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:28:05,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:28:05,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:28:05,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:28:05,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 169 [2024-02-07 14:28:05,837 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 14:28:05,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:28:05,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 169 [2024-02-07 14:28:05,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand