./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_1296118a-ef09-4d61-be44-778b616cab95/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1296118a-ef09-4d61-be44-778b616cab95/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1296118a-ef09-4d61-be44-778b616cab95/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1296118a-ef09-4d61-be44-778b616cab95/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1296118a-ef09-4d61-be44-778b616cab95/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1296118a-ef09-4d61-be44-778b616cab95/bin/uautomizer-uyxdKDjOR8 --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 da9f6c449f4da806b6a3bb0aaf2c3c9171ea9b71d075f7e8b1d9543f656f7b8b --- 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-2329fc7 [2022-12-13 18:19:15,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:19:15,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:19:15,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:19:15,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:19:15,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:19:15,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:19:15,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:19:15,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:19:15,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:19:15,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:19:15,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:19:15,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:19:15,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:19:15,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:19:15,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:19:15,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:19:15,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:19:15,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:19:15,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:19:15,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:19:15,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:19:15,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:19:15,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:19:15,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:19:15,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:19:15,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:19:15,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:19:15,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:19:15,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:19:15,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:19:15,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:19:15,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:19:15,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:19:15,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:19:15,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:19:15,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:19:15,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:19:15,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:19:15,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:19:15,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:19:15,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1296118a-ef09-4d61-be44-778b616cab95/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:19:15,257 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:19:15,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:19:15,257 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:19:15,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:19:15,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:19:15,263 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:19:15,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:19:15,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:19:15,264 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:19:15,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:19:15,264 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:19:15,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:19:15,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:19:15,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:19:15,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:19:15,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:19:15,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:19:15,265 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:19:15,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:19:15,265 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:19:15,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:19:15,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:19:15,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:19:15,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:19:15,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:19:15,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:19:15,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:19:15,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:19:15,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:19:15,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:19:15,267 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:19:15,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:19:15,267 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:19:15,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:19:15,268 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:19:15,268 INFO L138 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1296118a-ef09-4d61-be44-778b616cab95/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1296118a-ef09-4d61-be44-778b616cab95/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da9f6c449f4da806b6a3bb0aaf2c3c9171ea9b71d075f7e8b1d9543f656f7b8b [2022-12-13 18:19:15,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:19:15,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:19:15,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:19:15,479 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:19:15,479 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:19:15,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1296118a-ef09-4d61-be44-778b616cab95/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i [2022-12-13 18:19:18,129 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:19:18,363 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:19:18,364 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1296118a-ef09-4d61-be44-778b616cab95/sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i [2022-12-13 18:19:18,376 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1296118a-ef09-4d61-be44-778b616cab95/bin/uautomizer-uyxdKDjOR8/data/75046ff84/49e0ebb2e04f4a7f9fd18b1fa6a08475/FLAG0ad616e6d [2022-12-13 18:19:18,390 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1296118a-ef09-4d61-be44-778b616cab95/bin/uautomizer-uyxdKDjOR8/data/75046ff84/49e0ebb2e04f4a7f9fd18b1fa6a08475 [2022-12-13 18:19:18,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:19:18,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:19:18,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:19:18,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:19:18,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:19:18,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:18,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41282c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18, skipping insertion in model container [2022-12-13 18:19:18,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:18,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:19:18,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:19:18,820 WARN L237 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_1296118a-ef09-4d61-be44-778b616cab95/sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i[47038,47051] [2022-12-13 18:19:18,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:19:18,867 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:19:18,904 WARN L237 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_1296118a-ef09-4d61-be44-778b616cab95/sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i[47038,47051] [2022-12-13 18:19:18,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:19:18,988 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:19:18,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18 WrapperNode [2022-12-13 18:19:18,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:19:18,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:19:18,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:19:18,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:19:18,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:19,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:19,041 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 339 [2022-12-13 18:19:19,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:19:19,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:19:19,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:19:19,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:19:19,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:19,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:19,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:19,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:19,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:19,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:19,076 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:19,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:19,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:19:19,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:19:19,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:19:19,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:19:19,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:19,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:19:19,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1296118a-ef09-4d61-be44-778b616cab95/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:19:19,109 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1296118a-ef09-4d61-be44-778b616cab95/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:19:19,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1296118a-ef09-4d61-be44-778b616cab95/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:19:19,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:19:19,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 18:19:19,144 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-12-13 18:19:19,144 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-12-13 18:19:19,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:19:19,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:19:19,145 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-13 18:19:19,145 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-13 18:19:19,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:19:19,145 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 18:19:19,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 18:19:19,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:19:19,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 18:19:19,145 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2022-12-13 18:19:19,145 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2022-12-13 18:19:19,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:19:19,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:19:19,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:19:19,147 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 18:19:19,285 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:19:19,287 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:19:19,675 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:19:19,683 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:19:19,684 INFO L300 CfgBuilder]: Removed 28 assume(true) statements. [2022-12-13 18:19:19,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:19:19 BoogieIcfgContainer [2022-12-13 18:19:19,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:19:19,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:19:19,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:19:19,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:19:19,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:19:18" (1/3) ... [2022-12-13 18:19:19,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758405c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:19:19, skipping insertion in model container [2022-12-13 18:19:19,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (2/3) ... [2022-12-13 18:19:19,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758405c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:19:19, skipping insertion in model container [2022-12-13 18:19:19,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:19:19" (3/3) ... [2022-12-13 18:19:19,693 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_85-list2_racefree.i [2022-12-13 18:19:19,700 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:19:19,708 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:19:19,708 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 18:19:19,709 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:19:19,805 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-12-13 18:19:19,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 363 transitions, 768 flow [2022-12-13 18:19:20,138 INFO L130 PetriNetUnfolder]: 164/1099 cut-off events. [2022-12-13 18:19:20,138 INFO L131 PetriNetUnfolder]: For 36/65 co-relation queries the response was YES. [2022-12-13 18:19:20,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1160 conditions, 1099 events. 164/1099 cut-off events. For 36/65 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6857 event pairs, 0 based on Foata normal form. 0/919 useless extension candidates. Maximal degree in co-relation 572. Up to 16 conditions per place. [2022-12-13 18:19:20,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 363 transitions, 768 flow [2022-12-13 18:19:20,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 363 transitions, 768 flow [2022-12-13 18:19:20,167 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:19:20,175 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 363 transitions, 768 flow [2022-12-13 18:19:20,177 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 363 transitions, 768 flow [2022-12-13 18:19:20,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 363 transitions, 768 flow [2022-12-13 18:19:20,324 INFO L130 PetriNetUnfolder]: 164/1099 cut-off events. [2022-12-13 18:19:20,325 INFO L131 PetriNetUnfolder]: For 36/65 co-relation queries the response was YES. [2022-12-13 18:19:20,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1160 conditions, 1099 events. 164/1099 cut-off events. For 36/65 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6857 event pairs, 0 based on Foata normal form. 0/919 useless extension candidates. Maximal degree in co-relation 572. Up to 16 conditions per place. [2022-12-13 18:19:20,364 INFO L119 LiptonReduction]: Number of co-enabled transitions 54600 [2022-12-13 18:19:35,418 INFO L134 LiptonReduction]: Checked pairs total: 102995 [2022-12-13 18:19:35,418 INFO L136 LiptonReduction]: Total number of compositions: 283 [2022-12-13 18:19:35,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:19:35,432 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;@556a7453, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:19:35,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 18:19:35,437 INFO L130 PetriNetUnfolder]: 2/32 cut-off events. [2022-12-13 18:19:35,437 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:19:35,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:35,438 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 18:19:35,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 18:19:35,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:35,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1000724452, now seen corresponding path program 1 times [2022-12-13 18:19:35,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:35,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580018838] [2022-12-13 18:19:35,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:35,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:19:35,586 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:19:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:19:35,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:19:35,687 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:19:35,688 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-12-13 18:19:35,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-12-13 18:19:35,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-12-13 18:19:35,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-12-13 18:19:35,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-12-13 18:19:35,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-12-13 18:19:35,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-13 18:19:35,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:19:35,691 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 18:19:35,695 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:19:35,695 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 18:19:35,761 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-12-13 18:19:35,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 514 places, 585 transitions, 1260 flow [2022-12-13 18:19:37,533 INFO L130 PetriNetUnfolder]: 1130/5606 cut-off events. [2022-12-13 18:19:37,534 INFO L131 PetriNetUnfolder]: For 602/779 co-relation queries the response was YES. [2022-12-13 18:19:37,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6280 conditions, 5606 events. 1130/5606 cut-off events. For 602/779 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 51622 event pairs, 22 based on Foata normal form. 0/4727 useless extension candidates. Maximal degree in co-relation 3512. Up to 192 conditions per place. [2022-12-13 18:19:37,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 514 places, 585 transitions, 1260 flow [2022-12-13 18:19:37,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 514 places, 585 transitions, 1260 flow [2022-12-13 18:19:37,687 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:19:37,687 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 514 places, 585 transitions, 1260 flow [2022-12-13 18:19:37,688 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 514 places, 585 transitions, 1260 flow [2022-12-13 18:19:37,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 514 places, 585 transitions, 1260 flow [2022-12-13 18:19:38,940 INFO L130 PetriNetUnfolder]: 1130/5606 cut-off events. [2022-12-13 18:19:38,940 INFO L131 PetriNetUnfolder]: For 602/779 co-relation queries the response was YES. [2022-12-13 18:19:39,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6280 conditions, 5606 events. 1130/5606 cut-off events. For 602/779 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 51622 event pairs, 22 based on Foata normal form. 0/4727 useless extension candidates. Maximal degree in co-relation 3512. Up to 192 conditions per place. [2022-12-13 18:19:39,425 INFO L119 LiptonReduction]: Number of co-enabled transitions 205980 [2022-12-13 18:19:59,122 INFO L134 LiptonReduction]: Checked pairs total: 428576 [2022-12-13 18:19:59,122 INFO L136 LiptonReduction]: Total number of compositions: 453 [2022-12-13 18:19:59,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:19:59,125 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;@556a7453, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:19:59,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-12-13 18:19:59,133 INFO L130 PetriNetUnfolder]: 14/117 cut-off events. [2022-12-13 18:19:59,133 INFO L131 PetriNetUnfolder]: For 8/11 co-relation queries the response was YES. [2022-12-13 18:19:59,133 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:59,133 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 18:19:59,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-13 18:19:59,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:59,134 INFO L85 PathProgramCache]: Analyzing trace with hash -183085109, now seen corresponding path program 1 times [2022-12-13 18:19:59,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:59,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419910988] [2022-12-13 18:19:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:59,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:19:59,172 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:19:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:19:59,204 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:19:59,204 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:19:59,204 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-12-13 18:19:59,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2022-12-13 18:19:59,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2022-12-13 18:19:59,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 9 remaining) [2022-12-13 18:19:59,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2022-12-13 18:19:59,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2022-12-13 18:19:59,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2022-12-13 18:19:59,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2022-12-13 18:19:59,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2022-12-13 18:19:59,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:19:59,206 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 18:19:59,207 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:19:59,207 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 18:19:59,268 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2022-12-13 18:19:59,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 703 places, 807 transitions, 1758 flow [2022-12-13 18:20:11,468 INFO L130 PetriNetUnfolder]: 8984/31893 cut-off events. [2022-12-13 18:20:11,468 INFO L131 PetriNetUnfolder]: For 7059/7580 co-relation queries the response was YES. [2022-12-13 18:20:12,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39067 conditions, 31893 events. 8984/31893 cut-off events. For 7059/7580 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 353009 event pairs, 1024 based on Foata normal form. 0/27585 useless extension candidates. Maximal degree in co-relation 20460. Up to 2304 conditions per place. [2022-12-13 18:20:12,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 703 places, 807 transitions, 1758 flow [2022-12-13 18:20:13,661 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 703 places, 807 transitions, 1758 flow [2022-12-13 18:20:13,661 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:20:13,661 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 703 places, 807 transitions, 1758 flow [2022-12-13 18:20:13,662 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 703 places, 807 transitions, 1758 flow [2022-12-13 18:20:13,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 703 places, 807 transitions, 1758 flow [2022-12-13 18:20:25,560 INFO L130 PetriNetUnfolder]: 8984/31893 cut-off events. [2022-12-13 18:20:25,561 INFO L131 PetriNetUnfolder]: For 7059/7580 co-relation queries the response was YES. [2022-12-13 18:20:26,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39067 conditions, 31893 events. 8984/31893 cut-off events. For 7059/7580 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 353009 event pairs, 1024 based on Foata normal form. 0/27585 useless extension candidates. Maximal degree in co-relation 20460. Up to 2304 conditions per place. [2022-12-13 18:20:29,680 INFO L119 LiptonReduction]: Number of co-enabled transitions 454140 [2022-12-13 18:20:52,364 INFO L134 LiptonReduction]: Checked pairs total: 981683 [2022-12-13 18:20:52,364 INFO L136 LiptonReduction]: Total number of compositions: 620 [2022-12-13 18:20:52,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:20:52,367 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;@556a7453, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:20:52,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 18:20:52,379 INFO L130 PetriNetUnfolder]: 11/108 cut-off events. [2022-12-13 18:20:52,379 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 18:20:52,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:20:52,379 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:20:52,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-12-13 18:20:52,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:20:52,380 INFO L85 PathProgramCache]: Analyzing trace with hash 391848776, now seen corresponding path program 1 times [2022-12-13 18:20:52,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:20:52,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363692800] [2022-12-13 18:20:52,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:20:52,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:20:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:52,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:20:52,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:20:52,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363692800] [2022-12-13 18:20:52,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363692800] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:20:52,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:20:52,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:20:52,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074965094] [2022-12-13 18:20:52,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:20:52,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:20:52,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:20:52,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:20:52,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:20:52,550 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 683 out of 1427 [2022-12-13 18:20:52,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 299 transitions, 742 flow. Second operand has 3 states, 3 states have (on average 686.3333333333334) internal successors, (2059), 3 states have internal predecessors, (2059), 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) [2022-12-13 18:20:52,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:20:52,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 683 of 1427 [2022-12-13 18:20:52,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand