./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/01_inc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7901e4-4961-4b3b-8b9c-7ab817e77096/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7901e4-4961-4b3b-8b9c-7ab817e77096/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7901e4-4961-4b3b-8b9c-7ab817e77096/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7901e4-4961-4b3b-8b9c-7ab817e77096/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/01_inc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7901e4-4961-4b3b-8b9c-7ab817e77096/bin/utaipan-G1rejxKTta/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7901e4-4961-4b3b-8b9c-7ab817e77096/bin/utaipan-G1rejxKTta --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 dc44c09c63836e77e2249e5abf8328354015a2494c028ff1b2e04f58fa741976 --- 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-dbf71c6-m [2022-10-17 17:21:44,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:21:44,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:21:44,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:21:44,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:21:44,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:21:44,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:21:44,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:21:44,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:21:44,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:21:44,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:21:44,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:21:44,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:21:44,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:21:44,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:21:44,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:21:44,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:21:44,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:21:44,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:21:44,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:21:44,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:21:44,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:21:44,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:21:44,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:21:44,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:21:44,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:21:44,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:21:44,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:21:44,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:21:44,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:21:44,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:21:44,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:21:44,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:21:44,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:21:44,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:21:44,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:21:44,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:21:44,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:21:44,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:21:44,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:21:44,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:21:44,234 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7901e4-4961-4b3b-8b9c-7ab817e77096/bin/utaipan-G1rejxKTta/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-10-17 17:21:44,296 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:21:44,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:21:44,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:21:44,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:21:44,302 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:21:44,302 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:21:44,302 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:21:44,303 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:21:44,303 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:21:44,303 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:21:44,305 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:21:44,305 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:21:44,305 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:21:44,306 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:21:44,306 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:21:44,306 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:21:44,306 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:21:44,307 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:21:44,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:21:44,308 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:21:44,308 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:21:44,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:21:44,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:21:44,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:21:44,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:21:44,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:21:44,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:21:44,312 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-10-17 17:21:44,313 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:21:44,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:21:44,313 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:21:44,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:21:44,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:21:44,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:21:44,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:21:44,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:21:44,315 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:21:44,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:21:44,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:21:44,316 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:21:44,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:21:44,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:21:44,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:21:44,317 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_8d7901e4-4961-4b3b-8b9c-7ab817e77096/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7901e4-4961-4b3b-8b9c-7ab817e77096/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc44c09c63836e77e2249e5abf8328354015a2494c028ff1b2e04f58fa741976 [2022-10-17 17:21:44,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:21:44,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:21:44,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:21:44,701 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:21:44,702 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:21:44,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7901e4-4961-4b3b-8b9c-7ab817e77096/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/pthread-ext/01_inc.i [2022-10-17 17:21:44,779 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7901e4-4961-4b3b-8b9c-7ab817e77096/bin/utaipan-G1rejxKTta/data/8233d7b55/de4687eb00cc4e02a22ac8b75b617a17/FLAG48be19433 [2022-10-17 17:21:45,463 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:21:45,464 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7901e4-4961-4b3b-8b9c-7ab817e77096/sv-benchmarks/c/pthread-ext/01_inc.i [2022-10-17 17:21:45,478 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7901e4-4961-4b3b-8b9c-7ab817e77096/bin/utaipan-G1rejxKTta/data/8233d7b55/de4687eb00cc4e02a22ac8b75b617a17/FLAG48be19433 [2022-10-17 17:21:45,662 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7901e4-4961-4b3b-8b9c-7ab817e77096/bin/utaipan-G1rejxKTta/data/8233d7b55/de4687eb00cc4e02a22ac8b75b617a17 [2022-10-17 17:21:45,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:21:45,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:21:45,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:21:45,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:21:45,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:21:45,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:21:45" (1/1) ... [2022-10-17 17:21:45,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a42ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:45, skipping insertion in model container [2022-10-17 17:21:45,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:21:45" (1/1) ... [2022-10-17 17:21:45,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:21:45,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:21:45,964 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-10-17 17:21:46,127 WARN L230 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_8d7901e4-4961-4b3b-8b9c-7ab817e77096/sv-benchmarks/c/pthread-ext/01_inc.i[30915,30928] [2022-10-17 17:21:46,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:21:46,143 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:21:46,162 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-10-17 17:21:46,190 WARN L230 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_8d7901e4-4961-4b3b-8b9c-7ab817e77096/sv-benchmarks/c/pthread-ext/01_inc.i[30915,30928] [2022-10-17 17:21:46,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:21:46,244 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:21:46,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:46 WrapperNode [2022-10-17 17:21:46,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:21:46,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:21:46,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:21:46,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:21:46,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:46" (1/1) ... [2022-10-17 17:21:46,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:46" (1/1) ... [2022-10-17 17:21:46,298 INFO L138 Inliner]: procedures = 173, calls = 18, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 88 [2022-10-17 17:21:46,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:21:46,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:21:46,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:21:46,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:21:46,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:46" (1/1) ... [2022-10-17 17:21:46,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:46" (1/1) ... [2022-10-17 17:21:46,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:46" (1/1) ... [2022-10-17 17:21:46,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:46" (1/1) ... [2022-10-17 17:21:46,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:46" (1/1) ... [2022-10-17 17:21:46,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:46" (1/1) ... [2022-10-17 17:21:46,337 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:46" (1/1) ... [2022-10-17 17:21:46,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:46" (1/1) ... [2022-10-17 17:21:46,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:21:46,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:21:46,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:21:46,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:21:46,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:46" (1/1) ... [2022-10-17 17:21:46,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:21:46,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7901e4-4961-4b3b-8b9c-7ab817e77096/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:21:46,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7901e4-4961-4b3b-8b9c-7ab817e77096/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:21:46,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7901e4-4961-4b3b-8b9c-7ab817e77096/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:21:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-10-17 17:21:46,429 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-10-17 17:21:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:21:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 17:21:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:21:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:21:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:21:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:21:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 17:21:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:21:46,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:21:46,433 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 17:21:46,566 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:21:46,569 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:21:46,886 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:21:47,029 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:21:47,029 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:21:47,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:21:47 BoogieIcfgContainer [2022-10-17 17:21:47,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:21:47,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:21:47,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:21:47,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:21:47,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:21:45" (1/3) ... [2022-10-17 17:21:47,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b6ff3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:21:47, skipping insertion in model container [2022-10-17 17:21:47,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:46" (2/3) ... [2022-10-17 17:21:47,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b6ff3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:21:47, skipping insertion in model container [2022-10-17 17:21:47,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:21:47" (3/3) ... [2022-10-17 17:21:47,045 INFO L112 eAbstractionObserver]: Analyzing ICFG 01_inc.i [2022-10-17 17:21:47,055 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 17:21:47,068 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:21:47,069 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-10-17 17:21:47,069 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 17:21:47,157 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 17:21:47,222 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-10-17 17:21:47,244 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 61 transitions, 127 flow [2022-10-17 17:21:47,251 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 61 transitions, 127 flow [2022-10-17 17:21:47,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 61 transitions, 127 flow [2022-10-17 17:21:47,324 INFO L130 PetriNetUnfolder]: 3/72 cut-off events. [2022-10-17 17:21:47,325 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 17:21:47,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 72 events. 3/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 103 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2022-10-17 17:21:47,331 INFO L118 LiptonReduction]: Number of co-enabled transitions 868 [2022-10-17 17:21:50,263 INFO L133 LiptonReduction]: Checked pairs total: 830 [2022-10-17 17:21:50,263 INFO L135 LiptonReduction]: Total number of compositions: 75 [2022-10-17 17:21:50,275 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 17 transitions, 39 flow [2022-10-17 17:21:50,294 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 62 states, 41 states have (on average 2.5365853658536586) internal successors, (104), 61 states have internal predecessors, (104), 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) [2022-10-17 17:21:50,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:21:50,328 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;@17d0d2bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:21:50,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-10-17 17:21:50,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 41 states have (on average 2.5365853658536586) internal successors, (104), 61 states have internal predecessors, (104), 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) [2022-10-17 17:21:50,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-17 17:21:50,338 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:21:50,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-17 17:21:50,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-10-17 17:21:50,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:21:50,346 INFO L85 PathProgramCache]: Analyzing trace with hash 12406746, now seen corresponding path program 1 times [2022-10-17 17:21:50,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:21:50,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880436561] [2022-10-17 17:21:50,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:50,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:21:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:21:50,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:21:50,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880436561] [2022-10-17 17:21:50,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880436561] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:21:50,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:21:50,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 17:21:50,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180477661] [2022-10-17 17:21:50,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:21:50,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:21:50,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:21:50,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:21:50,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:21:50,687 INFO L87 Difference]: Start difference. First operand has 62 states, 41 states have (on average 2.5365853658536586) internal successors, (104), 61 states have internal predecessors, (104), 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 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-10-17 17:21:50,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:21:50,730 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-10-17 17:21:50,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:21:50,733 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-10-17 17:21:50,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:21:50,742 INFO L225 Difference]: With dead ends: 11 [2022-10-17 17:21:50,742 INFO L226 Difference]: Without dead ends: 11 [2022-10-17 17:21:50,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:21:50,750 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:21:50,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:21:50,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-10-17 17:21:50,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-10-17 17:21:50,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2022-10-17 17:21:50,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-10-17 17:21:50,793 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2022-10-17 17:21:50,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:21:50,793 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-10-17 17:21:50,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-10-17 17:21:50,794 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-10-17 17:21:50,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:21:50,795 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:21:50,795 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-10-17 17:21:50,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:21:50,796 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-10-17 17:21:50,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:21:50,798 INFO L85 PathProgramCache]: Analyzing trace with hash -962053149, now seen corresponding path program 1 times [2022-10-17 17:21:50,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:21:50,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080223979] [2022-10-17 17:21:50,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:50,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:21:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:21:50,871 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:21:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:21:50,930 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-10-17 17:21:50,930 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 17:21:50,932 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-10-17 17:21:50,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2022-10-17 17:21:50,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2022-10-17 17:21:50,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2022-10-17 17:21:50,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2022-10-17 17:21:50,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2022-10-17 17:21:50,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2022-10-17 17:21:50,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2022-10-17 17:21:50,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2022-10-17 17:21:50,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2022-10-17 17:21:50,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2022-10-17 17:21:50,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2022-10-17 17:21:50,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2022-10-17 17:21:50,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2022-10-17 17:21:50,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2022-10-17 17:21:50,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2022-10-17 17:21:50,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2022-10-17 17:21:50,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2022-10-17 17:21:50,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2022-10-17 17:21:50,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2022-10-17 17:21:50,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2022-10-17 17:21:50,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:21:50,944 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 17:21:50,947 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 17:21:50,947 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-10-17 17:21:50,980 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 17:21:50,985 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-10-17 17:21:50,985 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 93 transitions, 198 flow [2022-10-17 17:21:50,986 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 93 transitions, 198 flow [2022-10-17 17:21:50,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 93 transitions, 198 flow [2022-10-17 17:21:51,023 INFO L130 PetriNetUnfolder]: 5/117 cut-off events. [2022-10-17 17:21:51,024 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 17:21:51,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 117 events. 5/117 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 286 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 75. Up to 6 conditions per place. [2022-10-17 17:21:51,031 INFO L118 LiptonReduction]: Number of co-enabled transitions 3720 [2022-10-17 17:21:53,723 INFO L133 LiptonReduction]: Checked pairs total: 31331 [2022-10-17 17:21:53,723 INFO L135 LiptonReduction]: Total number of compositions: 126 [2022-10-17 17:21:53,724 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 56 transitions, 124 flow [2022-10-17 17:21:53,920 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3577 states, 3320 states have (on average 3.0201807228915665) internal successors, (10027), 3576 states have internal predecessors, (10027), 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) [2022-10-17 17:21:53,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:21:53,923 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;@17d0d2bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:21:53,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-10-17 17:21:53,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 3577 states, 3320 states have (on average 3.0201807228915665) internal successors, (10027), 3576 states have internal predecessors, (10027), 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) [2022-10-17 17:21:53,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-17 17:21:53,936 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:21:53,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-17 17:21:53,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-10-17 17:21:53,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:21:53,938 INFO L85 PathProgramCache]: Analyzing trace with hash 19060352, now seen corresponding path program 1 times [2022-10-17 17:21:53,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:21:53,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959442475] [2022-10-17 17:21:53,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:53,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:21:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:53,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:21:53,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:21:53,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959442475] [2022-10-17 17:21:53,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959442475] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:21:53,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:21:53,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 17:21:53,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056088603] [2022-10-17 17:21:53,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:21:53,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:21:53,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:21:53,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:21:53,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:21:53,991 INFO L87 Difference]: Start difference. First operand has 3577 states, 3320 states have (on average 3.0201807228915665) internal successors, (10027), 3576 states have internal predecessors, (10027), 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 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-10-17 17:21:54,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:21:54,072 INFO L93 Difference]: Finished difference Result 1516 states and 4185 transitions. [2022-10-17 17:21:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:21:54,075 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-10-17 17:21:54,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:21:54,114 INFO L225 Difference]: With dead ends: 1516 [2022-10-17 17:21:54,114 INFO L226 Difference]: Without dead ends: 1516 [2022-10-17 17:21:54,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:21:54,119 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:21:54,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:21:54,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2022-10-17 17:21:54,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1516. [2022-10-17 17:21:54,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1500 states have (on average 2.79) internal successors, (4185), 1515 states have internal predecessors, (4185), 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) [2022-10-17 17:21:54,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 4185 transitions. [2022-10-17 17:21:54,306 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 4185 transitions. Word has length 4 [2022-10-17 17:21:54,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:21:54,307 INFO L495 AbstractCegarLoop]: Abstraction has 1516 states and 4185 transitions. [2022-10-17 17:21:54,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-10-17 17:21:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 4185 transitions. [2022-10-17 17:21:54,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:21:54,308 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:21:54,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:21:54,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:21:54,308 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-10-17 17:21:54,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:21:54,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1137142463, now seen corresponding path program 1 times [2022-10-17 17:21:54,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:21:54,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278903922] [2022-10-17 17:21:54,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:54,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:21:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:21:54,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:21:54,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278903922] [2022-10-17 17:21:54,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278903922] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:21:54,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:21:54,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:21:54,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593446405] [2022-10-17 17:21:54,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:21:54,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:21:54,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:21:54,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:21:54,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:21:54,444 INFO L87 Difference]: Start difference. First operand 1516 states and 4185 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-10-17 17:21:54,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:21:54,580 INFO L93 Difference]: Finished difference Result 1648 states and 4521 transitions. [2022-10-17 17:21:54,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:21:54,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-10-17 17:21:54,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:21:54,605 INFO L225 Difference]: With dead ends: 1648 [2022-10-17 17:21:54,605 INFO L226 Difference]: Without dead ends: 1648 [2022-10-17 17:21:54,606 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 [2022-10-17 17:21:54,611 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:21:54,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 36 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:21:54,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-10-17 17:21:54,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1368. [2022-10-17 17:21:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1356 states have (on average 2.755899705014749) internal successors, (3737), 1367 states have internal predecessors, (3737), 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) [2022-10-17 17:21:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 3737 transitions. [2022-10-17 17:21:54,768 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 3737 transitions. Word has length 6 [2022-10-17 17:21:54,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:21:54,769 INFO L495 AbstractCegarLoop]: Abstraction has 1368 states and 3737 transitions. [2022-10-17 17:21:54,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-10-17 17:21:54,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 3737 transitions. [2022-10-17 17:21:54,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 17:21:54,772 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:21:54,773 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-10-17 17:21:54,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:21:54,780 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-10-17 17:21:54,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:21:54,781 INFO L85 PathProgramCache]: Analyzing trace with hash 629667398, now seen corresponding path program 1 times [2022-10-17 17:21:54,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:21:54,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082664954] [2022-10-17 17:21:54,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:54,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:21:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:21:54,826 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:21:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:21:54,856 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-10-17 17:21:54,862 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 17:21:54,862 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-10-17 17:21:54,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2022-10-17 17:21:54,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2022-10-17 17:21:54,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2022-10-17 17:21:54,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2022-10-17 17:21:54,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2022-10-17 17:21:54,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2022-10-17 17:21:54,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2022-10-17 17:21:54,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2022-10-17 17:21:54,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2022-10-17 17:21:54,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2022-10-17 17:21:54,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2022-10-17 17:21:54,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2022-10-17 17:21:54,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2022-10-17 17:21:54,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2022-10-17 17:21:54,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2022-10-17 17:21:54,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2022-10-17 17:21:54,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2022-10-17 17:21:54,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2022-10-17 17:21:54,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2022-10-17 17:21:54,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2022-10-17 17:21:54,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2022-10-17 17:21:54,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2022-10-17 17:21:54,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2022-10-17 17:21:54,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2022-10-17 17:21:54,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2022-10-17 17:21:54,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2022-10-17 17:21:54,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2022-10-17 17:21:54,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2022-10-17 17:21:54,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2022-10-17 17:21:54,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2022-10-17 17:21:54,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 17:21:54,876 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-17 17:21:54,877 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 17:21:54,877 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-10-17 17:21:54,931 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 17:21:54,940 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-10-17 17:21:54,940 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 125 transitions, 271 flow [2022-10-17 17:21:54,941 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 125 transitions, 271 flow [2022-10-17 17:21:54,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 125 transitions, 271 flow [2022-10-17 17:21:55,020 INFO L130 PetriNetUnfolder]: 7/162 cut-off events. [2022-10-17 17:21:55,023 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-10-17 17:21:55,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 162 events. 7/162 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 476 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 121. Up to 8 conditions per place. [2022-10-17 17:21:55,041 INFO L118 LiptonReduction]: Number of co-enabled transitions 8556 [2022-10-17 17:21:59,222 INFO L133 LiptonReduction]: Checked pairs total: 86295 [2022-10-17 17:21:59,223 INFO L135 LiptonReduction]: Total number of compositions: 177 [2022-10-17 17:21:59,224 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 81 transitions, 183 flow [2022-10-17 17:22:03,219 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 85944 states, 83141 states have (on average 3.930912546156529) internal successors, (326820), 85943 states have internal predecessors, (326820), 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) [2022-10-17 17:22:03,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:22:03,223 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;@17d0d2bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:22:03,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-10-17 17:22:03,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 85944 states, 83141 states have (on average 3.930912546156529) internal successors, (326820), 85943 states have internal predecessors, (326820), 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) [2022-10-17 17:22:03,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-17 17:22:03,624 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:22:03,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-17 17:22:03,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-10-17 17:22:03,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:22:03,628 INFO L85 PathProgramCache]: Analyzing trace with hash 28748688, now seen corresponding path program 1 times [2022-10-17 17:22:03,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:22:03,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542047991] [2022-10-17 17:22:03,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:03,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:22:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:22:03,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:22:03,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542047991] [2022-10-17 17:22:03,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542047991] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:22:03,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:22:03,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 17:22:03,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86643806] [2022-10-17 17:22:03,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:22:03,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:22:03,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:22:03,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:22:03,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:22:03,992 INFO L87 Difference]: Start difference. First operand has 85944 states, 83141 states have (on average 3.930912546156529) internal successors, (326820), 85943 states have internal predecessors, (326820), 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 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-10-17 17:22:05,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:22:05,043 INFO L93 Difference]: Finished difference Result 25792 states and 96954 transitions. [2022-10-17 17:22:05,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:22:05,043 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-10-17 17:22:05,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:22:05,638 INFO L225 Difference]: With dead ends: 25792 [2022-10-17 17:22:05,638 INFO L226 Difference]: Without dead ends: 25792 [2022-10-17 17:22:05,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:22:05,640 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:22:05,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:22:05,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25792 states. [2022-10-17 17:22:07,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25792 to 25792. [2022-10-17 17:22:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25792 states, 25728 states have (on average 3.7684235074626864) internal successors, (96954), 25791 states have internal predecessors, (96954), 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) [2022-10-17 17:22:07,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25792 states to 25792 states and 96954 transitions. [2022-10-17 17:22:07,616 INFO L78 Accepts]: Start accepts. Automaton has 25792 states and 96954 transitions. Word has length 4 [2022-10-17 17:22:07,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:22:07,616 INFO L495 AbstractCegarLoop]: Abstraction has 25792 states and 96954 transitions. [2022-10-17 17:22:07,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-10-17 17:22:07,617 INFO L276 IsEmpty]: Start isEmpty. Operand 25792 states and 96954 transitions. [2022-10-17 17:22:07,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:22:07,618 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:22:07,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:22:07,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 17:22:07,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-10-17 17:22:07,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:22:07,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1857597245, now seen corresponding path program 1 times [2022-10-17 17:22:07,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:22:07,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033566184] [2022-10-17 17:22:07,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:07,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:22:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:22:07,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:22:07,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033566184] [2022-10-17 17:22:07,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033566184] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:22:07,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:22:07,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:22:07,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353952926] [2022-10-17 17:22:07,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:22:07,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:22:07,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:22:07,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:22:07,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:22:07,664 INFO L87 Difference]: Start difference. First operand 25792 states and 96954 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-10-17 17:22:08,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:22:08,326 INFO L93 Difference]: Finished difference Result 33596 states and 122932 transitions. [2022-10-17 17:22:08,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:22:08,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-10-17 17:22:08,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:22:08,922 INFO L225 Difference]: With dead ends: 33596 [2022-10-17 17:22:08,923 INFO L226 Difference]: Without dead ends: 33596 [2022-10-17 17:22:08,923 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 [2022-10-17 17:22:08,924 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 39 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:22:08,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 51 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:22:09,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33596 states. [2022-10-17 17:22:10,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33596 to 25392. [2022-10-17 17:22:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25392 states, 25336 states have (on average 3.694979475844648) internal successors, (93616), 25391 states have internal predecessors, (93616), 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) [2022-10-17 17:22:10,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25392 states to 25392 states and 93616 transitions. [2022-10-17 17:22:10,531 INFO L78 Accepts]: Start accepts. Automaton has 25392 states and 93616 transitions. Word has length 6 [2022-10-17 17:22:10,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:22:10,531 INFO L495 AbstractCegarLoop]: Abstraction has 25392 states and 93616 transitions. [2022-10-17 17:22:10,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-10-17 17:22:10,532 INFO L276 IsEmpty]: Start isEmpty. Operand 25392 states and 93616 transitions. [2022-10-17 17:22:10,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:22:10,534 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:22:10,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:22:10,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 17:22:10,535 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-10-17 17:22:10,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:22:10,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1284431402, now seen corresponding path program 1 times [2022-10-17 17:22:10,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:22:10,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471150497] [2022-10-17 17:22:10,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:10,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:22:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:22:10,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:22:10,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471150497] [2022-10-17 17:22:10,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471150497] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:22:10,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:22:10,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:22:10,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792987495] [2022-10-17 17:22:10,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:22:10,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:22:10,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:22:10,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:22:10,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:22:10,579 INFO L87 Difference]: Start difference. First operand 25392 states and 93616 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-10-17 17:22:10,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:22:10,932 INFO L93 Difference]: Finished difference Result 27850 states and 102446 transitions. [2022-10-17 17:22:10,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:22:10,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2022-10-17 17:22:10,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:22:11,714 INFO L225 Difference]: With dead ends: 27850 [2022-10-17 17:22:11,714 INFO L226 Difference]: Without dead ends: 27850 [2022-10-17 17:22:11,714 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 [2022-10-17 17:22:11,715 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 33 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:22:11,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 63 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:22:11,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27850 states.