./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:41:17,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:41:17,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:41:17,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:41:17,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:41:17,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:41:17,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:41:17,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:41:17,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:41:17,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:41:17,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:41:17,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:41:17,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:41:17,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:41:17,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:41:17,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:41:17,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:41:17,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:41:17,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:41:17,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:41:17,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:41:17,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:41:17,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:41:17,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:41:17,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:41:17,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:41:17,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:41:17,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:41:17,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:41:17,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:41:17,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:41:17,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:41:17,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:41:17,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:41:17,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:41:17,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:41:17,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:41:17,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:41:17,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:41:17,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:41:17,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:41:17,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:41:17,404 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:41:17,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:41:17,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:41:17,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:41:17,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:41:17,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:41:17,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:41:17,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:41:17,408 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:41:17,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:41:17,409 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:41:17,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:41:17,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:41:17,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:41:17,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:41:17,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:41:17,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:41:17,416 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:41:17,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:41:17,417 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:41:17,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:41:17,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:41:17,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:41:17,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:41:17,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:41:17,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:41:17,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:41:17,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:41:17,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:41:17,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:41:17,420 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:41:17,421 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:41:17,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:41:17,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 [2022-11-16 12:41:17,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:41:17,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:41:17,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:41:17,825 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:41:17,826 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:41:17,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2022-11-16 12:41:17,904 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/bin/uautomizer-tPACEb0tL8/data/cddd97f35/2e96fac959c34d4693c26779a50e719b/FLAG9d908b8f8 [2022-11-16 12:41:18,662 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:41:18,666 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2022-11-16 12:41:18,695 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/bin/uautomizer-tPACEb0tL8/data/cddd97f35/2e96fac959c34d4693c26779a50e719b/FLAG9d908b8f8 [2022-11-16 12:41:18,864 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/bin/uautomizer-tPACEb0tL8/data/cddd97f35/2e96fac959c34d4693c26779a50e719b [2022-11-16 12:41:18,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:41:18,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:41:18,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:41:18,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:41:18,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:41:18,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:41:18" (1/1) ... [2022-11-16 12:41:18,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f24471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:18, skipping insertion in model container [2022-11-16 12:41:18,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:41:18" (1/1) ... [2022-11-16 12:41:18,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:41:18,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:41:19,677 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2022-11-16 12:41:19,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:41:19,761 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:41:19,821 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2022-11-16 12:41:19,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:41:19,942 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:41:19,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:19 WrapperNode [2022-11-16 12:41:19,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:41:19,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:41:19,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:41:19,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:41:19,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:19" (1/1) ... [2022-11-16 12:41:19,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:19" (1/1) ... [2022-11-16 12:41:20,071 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 206 [2022-11-16 12:41:20,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:41:20,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:41:20,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:41:20,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:41:20,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:19" (1/1) ... [2022-11-16 12:41:20,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:19" (1/1) ... [2022-11-16 12:41:20,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:19" (1/1) ... [2022-11-16 12:41:20,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:19" (1/1) ... [2022-11-16 12:41:20,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:19" (1/1) ... [2022-11-16 12:41:20,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:19" (1/1) ... [2022-11-16 12:41:20,150 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:19" (1/1) ... [2022-11-16 12:41:20,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:19" (1/1) ... [2022-11-16 12:41:20,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:41:20,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:41:20,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:41:20,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:41:20,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:19" (1/1) ... [2022-11-16 12:41:20,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:41:20,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:20,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:41:20,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08dc6f1b-2b60-4f85-9270-6adcc67ac984/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:41:20,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:41:20,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:41:20,284 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-16 12:41:20,284 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-16 12:41:20,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:41:20,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:41:20,285 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-16 12:41:20,286 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-16 12:41:20,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:41:20,288 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:41:20,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:41:20,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:41:20,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:41:20,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:41:20,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:41:20,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:41:20,291 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:41:20,537 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:41:20,540 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:41:21,070 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:41:21,081 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:41:21,081 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-16 12:41:21,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:41:21 BoogieIcfgContainer [2022-11-16 12:41:21,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:41:21,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:41:21,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:41:21,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:41:21,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:41:18" (1/3) ... [2022-11-16 12:41:21,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f3c067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:41:21, skipping insertion in model container [2022-11-16 12:41:21,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:19" (2/3) ... [2022-11-16 12:41:21,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f3c067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:41:21, skipping insertion in model container [2022-11-16 12:41:21,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:41:21" (3/3) ... [2022-11-16 12:41:21,112 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2022-11-16 12:41:21,123 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:41:21,136 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:41:21,151 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:41:21,151 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:41:21,380 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 12:41:21,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 221 transitions, 464 flow [2022-11-16 12:41:21,612 INFO L130 PetriNetUnfolder]: 52/418 cut-off events. [2022-11-16 12:41:21,612 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-11-16 12:41:21,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 418 events. 52/418 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1642 event pairs, 0 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 214. Up to 8 conditions per place. [2022-11-16 12:41:21,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 221 transitions, 464 flow [2022-11-16 12:41:21,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 219 transitions, 454 flow [2022-11-16 12:41:21,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:41:21,654 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@359b0ea7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:41:21,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 12:41:21,687 INFO L130 PetriNetUnfolder]: 9/126 cut-off events. [2022-11-16 12:41:21,687 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:41:21,687 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:21,688 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:21,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:41:21,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:21,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1720871167, now seen corresponding path program 1 times [2022-11-16 12:41:21,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:21,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883928473] [2022-11-16 12:41:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:21,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:41:21,995 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:41:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:41:22,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:41:22,086 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:41:22,088 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-11-16 12:41:22,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-16 12:41:22,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-16 12:41:22,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-11-16 12:41:22,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:41:22,093 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 12:41:22,098 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:41:22,098 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 12:41:22,205 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-16 12:41:22,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 344 transitions, 736 flow [2022-11-16 12:41:22,731 INFO L130 PetriNetUnfolder]: 191/1235 cut-off events. [2022-11-16 12:41:22,731 INFO L131 PetriNetUnfolder]: For 72/118 co-relation queries the response was YES. [2022-11-16 12:41:22,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1332 conditions, 1235 events. 191/1235 cut-off events. For 72/118 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 7657 event pairs, 2 based on Foata normal form. 0/1039 useless extension candidates. Maximal degree in co-relation 779. Up to 32 conditions per place. [2022-11-16 12:41:22,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 311 places, 344 transitions, 736 flow [2022-11-16 12:41:22,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 344 transitions, 736 flow [2022-11-16 12:41:22,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:41:22,786 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@359b0ea7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:41:22,787 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-16 12:41:22,827 INFO L130 PetriNetUnfolder]: 20/263 cut-off events. [2022-11-16 12:41:22,828 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:41:22,828 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:22,828 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:22,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:41:22,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:22,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1549829307, now seen corresponding path program 1 times [2022-11-16 12:41:22,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:22,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395689356] [2022-11-16 12:41:22,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:22,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:41:22,914 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:41:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:41:22,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:41:22,961 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:41:22,962 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-16 12:41:22,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-16 12:41:22,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-16 12:41:22,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-11-16 12:41:22,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-16 12:41:22,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:41:22,963 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 12:41:22,964 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:41:22,964 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 12:41:23,133 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-16 12:41:23,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 419 places, 467 transitions, 1012 flow [2022-11-16 12:41:25,050 INFO L130 PetriNetUnfolder]: 664/3422 cut-off events. [2022-11-16 12:41:25,051 INFO L131 PetriNetUnfolder]: For 419/519 co-relation queries the response was YES. [2022-11-16 12:41:25,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3873 conditions, 3422 events. 664/3422 cut-off events. For 419/519 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 26361 event pairs, 52 based on Foata normal form. 0/2908 useless extension candidates. Maximal degree in co-relation 2240. Up to 192 conditions per place. [2022-11-16 12:41:25,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 419 places, 467 transitions, 1012 flow [2022-11-16 12:41:25,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 419 places, 467 transitions, 1012 flow [2022-11-16 12:41:25,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:41:25,264 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@359b0ea7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:41:25,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-16 12:41:25,408 INFO L130 PetriNetUnfolder]: 44/507 cut-off events. [2022-11-16 12:41:25,408 INFO L131 PetriNetUnfolder]: For 22/42 co-relation queries the response was YES. [2022-11-16 12:41:25,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:25,409 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:25,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-16 12:41:25,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:25,413 INFO L85 PathProgramCache]: Analyzing trace with hash -544960333, now seen corresponding path program 1 times [2022-11-16 12:41:25,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:25,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364121639] [2022-11-16 12:41:25,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:25,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:41:25,543 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:41:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:41:25,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:41:25,651 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:41:25,651 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-16 12:41:25,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-16 12:41:25,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-16 12:41:25,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-11-16 12:41:25,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-16 12:41:25,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-16 12:41:25,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:41:25,654 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 12:41:25,654 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:41:25,659 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 12:41:25,851 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-16 12:41:25,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 527 places, 590 transitions, 1292 flow [2022-11-16 12:41:33,213 INFO L130 PetriNetUnfolder]: 2659/10759 cut-off events. [2022-11-16 12:41:33,213 INFO L131 PetriNetUnfolder]: For 2144/2314 co-relation queries the response was YES. [2022-11-16 12:41:33,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12924 conditions, 10759 events. 2659/10759 cut-off events. For 2144/2314 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 98795 event pairs, 626 based on Foata normal form. 0/9311 useless extension candidates. Maximal degree in co-relation 6922. Up to 1024 conditions per place. [2022-11-16 12:41:33,707 INFO L82 GeneralOperation]: Start removeDead. Operand has 527 places, 590 transitions, 1292 flow [2022-11-16 12:41:34,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 527 places, 590 transitions, 1292 flow [2022-11-16 12:41:34,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:41:34,087 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@359b0ea7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:41:34,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 12:41:34,392 INFO L130 PetriNetUnfolder]: 50/591 cut-off events. [2022-11-16 12:41:34,395 INFO L131 PetriNetUnfolder]: For 39/59 co-relation queries the response was YES. [2022-11-16 12:41:34,395 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:34,395 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:34,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:41:34,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:34,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1212469492, now seen corresponding path program 1 times [2022-11-16 12:41:34,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:34,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983958400] [2022-11-16 12:41:34,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:34,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:34,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:34,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983958400] [2022-11-16 12:41:34,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983958400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:34,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:34,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:41:34,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108770131] [2022-11-16 12:41:34,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:34,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:41:34,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:34,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:41:34,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:41:34,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 510 out of 590 [2022-11-16 12:41:34,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 590 transitions, 1292 flow. Second operand has 2 states, 2 states have (on average 511.5) internal successors, (1023), 2 states have internal predecessors, (1023), 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) [2022-11-16 12:41:34,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:34,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 510 of 590 [2022-11-16 12:41:34,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:41,834 INFO L130 PetriNetUnfolder]: 1877/9957 cut-off events. [2022-11-16 12:41:41,835 INFO L131 PetriNetUnfolder]: For 6431/7878 co-relation queries the response was YES. [2022-11-16 12:41:42,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14195 conditions, 9957 events. 1877/9957 cut-off events. For 6431/7878 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 96820 event pairs, 313 based on Foata normal form. 12704/21941 useless extension candidates. Maximal degree in co-relation 7317. Up to 2073 conditions per place. [2022-11-16 12:41:42,465 INFO L137 encePairwiseOnDemand]: 538/590 looper letters, 24 selfloop transitions, 0 changer transitions 0/534 dead transitions. [2022-11-16 12:41:42,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 534 transitions, 1228 flow [2022-11-16 12:41:42,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:41:42,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:41:42,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1096 transitions. [2022-11-16 12:41:42,500 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9288135593220339 [2022-11-16 12:41:42,501 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1096 transitions. [2022-11-16 12:41:42,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1096 transitions. [2022-11-16 12:41:42,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:42,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1096 transitions. [2022-11-16 12:41:42,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 548.0) internal successors, (1096), 2 states have internal predecessors, (1096), 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) [2022-11-16 12:41:42,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 590.0) internal successors, (1770), 3 states have internal predecessors, (1770), 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) [2022-11-16 12:41:42,534 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 590.0) internal successors, (1770), 3 states have internal predecessors, (1770), 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) [2022-11-16 12:41:42,536 INFO L175 Difference]: Start difference. First operand has 527 places, 590 transitions, 1292 flow. Second operand 2 states and 1096 transitions. [2022-11-16 12:41:42,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 534 transitions, 1228 flow [2022-11-16 12:41:42,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 534 transitions, 1228 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:41:42,570 INFO L231 Difference]: Finished difference. Result has 524 places, 534 transitions, 1180 flow [2022-11-16 12:41:42,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=590, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1180, PETRI_PLACES=524, PETRI_TRANSITIONS=534} [2022-11-16 12:41:42,580 INFO L288 CegarLoopForPetriNet]: 527 programPoint places, -3 predicate places. [2022-11-16 12:41:42,580 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 534 transitions, 1180 flow [2022-11-16 12:41:42,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 511.5) internal successors, (1023), 2 states have internal predecessors, (1023), 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) [2022-11-16 12:41:42,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:42,582 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:42,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:41:42,582 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:41:42,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:42,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2083016406, now seen corresponding path program 1 times [2022-11-16 12:41:42,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:42,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878824336] [2022-11-16 12:41:42,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:42,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:42,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:42,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878824336] [2022-11-16 12:41:42,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878824336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:42,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:42,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:41:42,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147256466] [2022-11-16 12:41:42,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:42,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:41:42,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:42,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:41:42,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:41:42,784 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 503 out of 590 [2022-11-16 12:41:42,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 534 transitions, 1180 flow. Second operand has 3 states, 3 states have (on average 504.3333333333333) internal successors, (1513), 3 states have internal predecessors, (1513), 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) [2022-11-16 12:41:42,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:42,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 503 of 590 [2022-11-16 12:41:42,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:48,452 INFO L130 PetriNetUnfolder]: 1860/9591 cut-off events. [2022-11-16 12:41:48,452 INFO L131 PetriNetUnfolder]: For 6428/8140 co-relation queries the response was YES. [2022-11-16 12:41:48,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13832 conditions, 9591 events. 1860/9591 cut-off events. For 6428/8140 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 92967 event pairs, 324 based on Foata normal form. 2/8903 useless extension candidates. Maximal degree in co-relation 13821. Up to 2088 conditions per place. [2022-11-16 12:41:48,995 INFO L137 encePairwiseOnDemand]: 587/590 looper letters, 33 selfloop transitions, 2 changer transitions 0/538 dead transitions. [2022-11-16 12:41:48,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 538 transitions, 1258 flow [2022-11-16 12:41:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:41:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:41:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1545 transitions. [2022-11-16 12:41:49,001 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8728813559322034 [2022-11-16 12:41:49,001 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1545 transitions. [2022-11-16 12:41:49,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1545 transitions. [2022-11-16 12:41:49,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:49,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1545 transitions. [2022-11-16 12:41:49,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 515.0) internal successors, (1545), 3 states have internal predecessors, (1545), 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) [2022-11-16 12:41:49,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 590.0) internal successors, (2360), 4 states have internal predecessors, (2360), 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) [2022-11-16 12:41:49,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 590.0) internal successors, (2360), 4 states have internal predecessors, (2360), 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) [2022-11-16 12:41:49,015 INFO L175 Difference]: Start difference. First operand has 524 places, 534 transitions, 1180 flow. Second operand 3 states and 1545 transitions. [2022-11-16 12:41:49,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 538 transitions, 1258 flow [2022-11-16 12:41:49,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 538 transitions, 1258 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:41:49,044 INFO L231 Difference]: Finished difference. Result has 527 places, 535 transitions, 1192 flow [2022-11-16 12:41:49,045 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=590, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1192, PETRI_PLACES=527, PETRI_TRANSITIONS=535} [2022-11-16 12:41:49,047 INFO L288 CegarLoopForPetriNet]: 527 programPoint places, 0 predicate places. [2022-11-16 12:41:49,048 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 535 transitions, 1192 flow [2022-11-16 12:41:49,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 504.3333333333333) internal successors, (1513), 3 states have internal predecessors, (1513), 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) [2022-11-16 12:41:49,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:49,050 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:49,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:41:49,051 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:41:49,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:49,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1646303511, now seen corresponding path program 1 times [2022-11-16 12:41:49,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:49,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153043690] [2022-11-16 12:41:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:49,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:41:49,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:41:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:41:49,199 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:41:49,199 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:41:49,200 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-11-16 12:41:49,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-11-16 12:41:49,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-11-16 12:41:49,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-11-16 12:41:49,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-11-16 12:41:49,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-11-16 12:41:49,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-11-16 12:41:49,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:41:49,202 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 12:41:49,203 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:41:49,203 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-16 12:41:49,354 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-11-16 12:41:49,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 635 places, 713 transitions, 1576 flow [2022-11-16 12:42:16,445 INFO L130 PetriNetUnfolder]: 11792/39230 cut-off events. [2022-11-16 12:42:16,445 INFO L131 PetriNetUnfolder]: For 10450/10706 co-relation queries the response was YES. [2022-11-16 12:42:19,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49656 conditions, 39230 events. 11792/39230 cut-off events. For 10450/10706 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 425634 event pairs, 4296 based on Foata normal form. 0/34504 useless extension candidates. Maximal degree in co-relation 24980. Up to 5120 conditions per place. [2022-11-16 12:42:19,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 635 places, 713 transitions, 1576 flow [2022-11-16 12:42:20,880 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 635 places, 713 transitions, 1576 flow [2022-11-16 12:42:20,882 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:42:20,883 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@359b0ea7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:42:20,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-16 12:42:20,981 INFO L130 PetriNetUnfolder]: 52/594 cut-off events. [2022-11-16 12:42:20,982 INFO L131 PetriNetUnfolder]: For 39/59 co-relation queries the response was YES. [2022-11-16 12:42:20,982 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:20,982 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:20,982 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2022-11-16 12:42:20,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:20,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1755503871, now seen corresponding path program 1 times [2022-11-16 12:42:20,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:20,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477451319] [2022-11-16 12:42:20,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:20,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:21,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:21,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:21,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477451319] [2022-11-16 12:42:21,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477451319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:21,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:21,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:42:21,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209968424] [2022-11-16 12:42:21,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:21,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:42:21,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:21,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:42:21,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:42:21,060 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 614 out of 713 [2022-11-16 12:42:21,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 713 transitions, 1576 flow. Second operand has 2 states, 2 states have (on average 615.5) internal successors, (1231), 2 states have internal predecessors, (1231), 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) [2022-11-16 12:42:21,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:21,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 614 of 713 [2022-11-16 12:42:21,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand