./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races 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_eec5adb6-310b-4a36-a5cf-69e88b961d51/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec5adb6-310b-4a36-a5cf-69e88b961d51/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec5adb6-310b-4a36-a5cf-69e88b961d51/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec5adb6-310b-4a36-a5cf-69e88b961d51/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec5adb6-310b-4a36-a5cf-69e88b961d51/bin/utaipan-Xvt2sAort0/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec5adb6-310b-4a36-a5cf-69e88b961d51/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df --- 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 19:26:14,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:26:14,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:26:14,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:26:14,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:26:14,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:26:14,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:26:14,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:26:14,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:26:14,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:26:14,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:26:14,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:26:14,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:26:14,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:26:14,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:26:14,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:26:14,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:26:14,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:26:14,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:26:14,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:26:14,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:26:14,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:26:14,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:26:14,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:26:14,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:26:14,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:26:14,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:26:14,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:26:14,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:26:14,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:26:14,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:26:14,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:26:14,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:26:14,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:26:14,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:26:14,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:26:14,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:26:14,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:26:14,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:26:14,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:26:14,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:26:14,268 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec5adb6-310b-4a36-a5cf-69e88b961d51/bin/utaipan-Xvt2sAort0/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-16 19:26:14,304 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:26:14,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:26:14,310 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:26:14,311 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:26:14,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:26:14,312 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:26:14,312 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:26:14,312 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:26:14,312 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:26:14,313 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:26:14,314 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:26:14,314 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:26:14,314 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:26:14,314 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:26:14,314 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:26:14,315 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:26:14,315 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:26:14,315 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:26:14,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:26:14,316 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:26:14,316 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 19:26:14,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:26:14,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:26:14,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:26:14,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:26:14,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:26:14,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:26:14,318 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 19:26:14,318 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:26:14,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:26:14,319 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:26:14,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:26:14,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:26:14,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:26:14,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:26:14,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:26:14,320 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:26:14,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:26:14,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:26:14,321 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:26:14,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:26:14,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:26:14,321 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:26:14,322 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_eec5adb6-310b-4a36-a5cf-69e88b961d51/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec5adb6-310b-4a36-a5cf-69e88b961d51/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df [2022-11-16 19:26:14,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:26:14,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:26:14,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:26:14,608 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:26:14,609 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:26:14,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec5adb6-310b-4a36-a5cf-69e88b961d51/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2022-11-16 19:26:14,696 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec5adb6-310b-4a36-a5cf-69e88b961d51/bin/utaipan-Xvt2sAort0/data/a02f27854/853873a5d3c24c34ae4e7e8e930b1c67/FLAG882daa86b [2022-11-16 19:26:15,188 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:26:15,189 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec5adb6-310b-4a36-a5cf-69e88b961d51/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2022-11-16 19:26:15,206 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec5adb6-310b-4a36-a5cf-69e88b961d51/bin/utaipan-Xvt2sAort0/data/a02f27854/853873a5d3c24c34ae4e7e8e930b1c67/FLAG882daa86b [2022-11-16 19:26:15,496 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec5adb6-310b-4a36-a5cf-69e88b961d51/bin/utaipan-Xvt2sAort0/data/a02f27854/853873a5d3c24c34ae4e7e8e930b1c67 [2022-11-16 19:26:15,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:26:15,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:26:15,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:26:15,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:26:15,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:26:15,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:26:15" (1/1) ... [2022-11-16 19:26:15,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36f0a79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:15, skipping insertion in model container [2022-11-16 19:26:15,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:26:15" (1/1) ... [2022-11-16 19:26:15,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:26:15,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:26:16,036 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_eec5adb6-310b-4a36-a5cf-69e88b961d51/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i[30176,30189] [2022-11-16 19:26:16,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:26:16,086 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:26:16,124 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_eec5adb6-310b-4a36-a5cf-69e88b961d51/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i[30176,30189] [2022-11-16 19:26:16,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:26:16,207 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:26:16,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:16 WrapperNode [2022-11-16 19:26:16,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:26:16,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:26:16,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:26:16,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:26:16,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:16" (1/1) ... [2022-11-16 19:26:16,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:16" (1/1) ... [2022-11-16 19:26:16,281 INFO L138 Inliner]: procedures = 170, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2022-11-16 19:26:16,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:26:16,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:26:16,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:26:16,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:26:16,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:16" (1/1) ... [2022-11-16 19:26:16,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:16" (1/1) ... [2022-11-16 19:26:16,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:16" (1/1) ... [2022-11-16 19:26:16,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:16" (1/1) ... [2022-11-16 19:26:16,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:16" (1/1) ... [2022-11-16 19:26:16,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:16" (1/1) ... [2022-11-16 19:26:16,331 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:16" (1/1) ... [2022-11-16 19:26:16,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:16" (1/1) ... [2022-11-16 19:26:16,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:26:16,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:26:16,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:26:16,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:26:16,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:16" (1/1) ... [2022-11-16 19:26:16,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:26:16,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec5adb6-310b-4a36-a5cf-69e88b961d51/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:26:16,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec5adb6-310b-4a36-a5cf-69e88b961d51/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:26:16,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec5adb6-310b-4a36-a5cf-69e88b961d51/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:26:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 19:26:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 19:26:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 19:26:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:26:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 19:26:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 19:26:16,431 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 19:26:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:26:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:26:16,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:26:16,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:26:16,433 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 19:26:16,557 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:26:16,560 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:26:17,040 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:26:17,047 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:26:17,047 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-16 19:26:17,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:26:17 BoogieIcfgContainer [2022-11-16 19:26:17,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:26:17,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:26:17,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:26:17,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:26:17,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:26:15" (1/3) ... [2022-11-16 19:26:17,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7e76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:26:17, skipping insertion in model container [2022-11-16 19:26:17,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:16" (2/3) ... [2022-11-16 19:26:17,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7e76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:26:17, skipping insertion in model container [2022-11-16 19:26:17,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:26:17" (3/3) ... [2022-11-16 19:26:17,058 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2022-11-16 19:26:17,067 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 19:26:17,076 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:26:17,076 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 19:26:17,076 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 19:26:17,156 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 19:26:17,191 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 19:26:17,207 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 160 transitions, 328 flow [2022-11-16 19:26:17,210 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 160 transitions, 328 flow [2022-11-16 19:26:17,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 160 transitions, 328 flow [2022-11-16 19:26:17,399 INFO L130 PetriNetUnfolder]: 17/209 cut-off events. [2022-11-16 19:26:17,399 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 19:26:17,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 209 events. 17/209 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 620 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2022-11-16 19:26:17,410 INFO L119 LiptonReduction]: Number of co-enabled transitions 6710 [2022-11-16 19:26:23,282 INFO L134 LiptonReduction]: Checked pairs total: 49258 [2022-11-16 19:26:23,283 INFO L136 LiptonReduction]: Total number of compositions: 139 [2022-11-16 19:26:23,294 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 67 transitions, 142 flow [2022-11-16 19:26:23,369 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 804 states, 777 states have (on average 2.236808236808237) internal successors, (1738), 803 states have internal predecessors, (1738), 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 19:26:23,387 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:26:23,394 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=FINITE_AUTOMATA, 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;@467a8e4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:26:23,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 19:26:23,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 804 states, 777 states have (on average 2.236808236808237) internal successors, (1738), 803 states have internal predecessors, (1738), 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 19:26:23,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 19:26:23,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:23,404 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-16 19:26:23,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-16 19:26:23,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:23,410 INFO L85 PathProgramCache]: Analyzing trace with hash 7388368, now seen corresponding path program 1 times [2022-11-16 19:26:23,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:23,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492119560] [2022-11-16 19:26:23,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:23,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:26:23,534 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 19:26:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:26:23,589 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 19:26:23,591 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 19:26:23,592 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-16 19:26:23,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-16 19:26:23,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-16 19:26:23,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-16 19:26:23,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-16 19:26:23,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-16 19:26:23,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-16 19:26:23,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-16 19:26:23,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-16 19:26:23,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-16 19:26:23,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-16 19:26:23,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:26:23,604 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 19:26:23,607 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 19:26:23,607 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 19:26:23,667 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 19:26:23,673 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 19:26:23,674 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 223 transitions, 464 flow [2022-11-16 19:26:23,674 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 223 transitions, 464 flow [2022-11-16 19:26:23,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 223 transitions, 464 flow [2022-11-16 19:26:23,779 INFO L130 PetriNetUnfolder]: 31/352 cut-off events. [2022-11-16 19:26:23,779 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 19:26:23,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 352 events. 31/352 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1355 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 211. Up to 8 conditions per place. [2022-11-16 19:26:23,802 INFO L119 LiptonReduction]: Number of co-enabled transitions 22204 [2022-11-16 19:26:30,406 INFO L134 LiptonReduction]: Checked pairs total: 205485 [2022-11-16 19:26:30,407 INFO L136 LiptonReduction]: Total number of compositions: 187 [2022-11-16 19:26:30,409 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 103 places, 114 transitions, 246 flow [2022-11-16 19:26:31,579 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 32423 states, 32271 states have (on average 3.289485916147625) internal successors, (106155), 32422 states have internal predecessors, (106155), 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 19:26:31,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:26:31,581 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=FINITE_AUTOMATA, 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;@467a8e4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:26:31,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-16 19:26:31,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 32423 states, 32271 states have (on average 3.289485916147625) internal successors, (106155), 32422 states have internal predecessors, (106155), 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 19:26:31,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 19:26:31,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:31,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:31,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-16 19:26:31,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:31,672 INFO L85 PathProgramCache]: Analyzing trace with hash 609716699, now seen corresponding path program 1 times [2022-11-16 19:26:31,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:31,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973098209] [2022-11-16 19:26:31,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:31,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:31,893 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 19:26:31,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:31,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973098209] [2022-11-16 19:26:31,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973098209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:31,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:31,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:26:31,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685854091] [2022-11-16 19:26:31,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:31,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:26:31,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:31,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:26:31,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:26:31,981 INFO L87 Difference]: Start difference. First operand has 32423 states, 32271 states have (on average 3.289485916147625) internal successors, (106155), 32422 states have internal predecessors, (106155), 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 19:26:32,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:32,672 INFO L93 Difference]: Finished difference Result 32413 states and 92894 transitions. [2022-11-16 19:26:32,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:26:32,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) Word has length 9 [2022-11-16 19:26:32,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:33,085 INFO L225 Difference]: With dead ends: 32413 [2022-11-16 19:26:33,086 INFO L226 Difference]: Without dead ends: 32397 [2022-11-16 19:26:33,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:26:33,097 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 38 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:33,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 122 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:26:33,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32397 states. [2022-11-16 19:26:34,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32397 to 32397. [2022-11-16 19:26:34,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32397 states, 32250 states have (on average 2.8791937984496125) internal successors, (92854), 32396 states have internal predecessors, (92854), 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 19:26:34,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32397 states to 32397 states and 92854 transitions. [2022-11-16 19:26:34,918 INFO L78 Accepts]: Start accepts. Automaton has 32397 states and 92854 transitions. Word has length 9 [2022-11-16 19:26:34,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:34,918 INFO L495 AbstractCegarLoop]: Abstraction has 32397 states and 92854 transitions. [2022-11-16 19:26:34,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 19:26:34,919 INFO L276 IsEmpty]: Start isEmpty. Operand 32397 states and 92854 transitions. [2022-11-16 19:26:34,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 19:26:34,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:34,923 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-16 19:26:34,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 19:26:34,923 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-16 19:26:34,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:34,924 INFO L85 PathProgramCache]: Analyzing trace with hash 22705479, now seen corresponding path program 1 times [2022-11-16 19:26:34,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:34,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768736628] [2022-11-16 19:26:34,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:34,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:26:34,976 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 19:26:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:26:35,007 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 19:26:35,013 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 19:26:35,013 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-16 19:26:35,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-16 19:26:35,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-16 19:26:35,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-16 19:26:35,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-16 19:26:35,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-16 19:26:35,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-16 19:26:35,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-16 19:26:35,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-16 19:26:35,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-16 19:26:35,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-16 19:26:35,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-16 19:26:35,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-16 19:26:35,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-16 19:26:35,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-16 19:26:35,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 19:26:35,025 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 19:26:35,025 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 19:26:35,025 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 19:26:35,071 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 19:26:35,076 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 19:26:35,076 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 286 transitions, 602 flow [2022-11-16 19:26:35,076 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 286 transitions, 602 flow [2022-11-16 19:26:35,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 286 transitions, 602 flow [2022-11-16 19:26:35,214 INFO L130 PetriNetUnfolder]: 50/540 cut-off events. [2022-11-16 19:26:35,214 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 19:26:35,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 540 events. 50/540 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2345 event pairs, 1 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 360. Up to 16 conditions per place. [2022-11-16 19:26:35,256 INFO L119 LiptonReduction]: Number of co-enabled transitions 45018 [2022-11-16 19:26:45,828 INFO L134 LiptonReduction]: Checked pairs total: 475350 [2022-11-16 19:26:45,828 INFO L136 LiptonReduction]: Total number of compositions: 240 [2022-11-16 19:26:45,829 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 141 places, 157 transitions, 344 flow [2022-11-16 19:27:22,789 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1182371 states, 1181534 states have (on average 4.400718895943748) internal successors, (5199599), 1182370 states have internal predecessors, (5199599), 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 19:27:22,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:27:22,794 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=FINITE_AUTOMATA, 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;@467a8e4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:27:22,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations.