./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c42c28f-58cf-4681-90c3-c8fac4392c4e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c42c28f-58cf-4681-90c3-c8fac4392c4e/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c42c28f-58cf-4681-90c3-c8fac4392c4e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c42c28f-58cf-4681-90c3-c8fac4392c4e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c42c28f-58cf-4681-90c3-c8fac4392c4e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c42c28f-58cf-4681-90c3-c8fac4392c4e/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6cbe8dd40fecf4391efe5e4ba3939c64a9fdbbfb53083def47a68bbefda43a3c --- 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-5e519f3 [2022-11-03 02:38:14,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:38:14,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:38:14,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:38:14,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:38:14,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:38:14,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:38:14,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:38:14,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:38:14,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:38:14,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:38:14,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:38:14,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:38:14,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:38:14,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:38:14,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:38:14,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:38:14,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:38:14,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:38:14,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:38:14,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:38:14,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:38:14,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:38:14,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:38:14,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:38:14,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:38:14,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:38:14,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:38:14,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:38:14,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:38:14,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:38:14,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:38:14,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:38:14,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:38:14,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:38:14,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:38:14,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:38:14,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:38:14,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:38:14,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:38:14,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:38:14,348 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c42c28f-58cf-4681-90c3-c8fac4392c4e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:38:14,400 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:38:14,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:38:14,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:38:14,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:38:14,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:38:14,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:38:14,404 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:38:14,404 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:38:14,405 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:38:14,405 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:38:14,406 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:38:14,407 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:38:14,407 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:38:14,408 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:38:14,408 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:38:14,408 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:38:14,409 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:38:14,409 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:38:14,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:38:14,411 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:38:14,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:38:14,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:38:14,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:38:14,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:38:14,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:38:14,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:38:14,413 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:38:14,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:38:14,414 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:38:14,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:38:14,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:38:14,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:38:14,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:38:14,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:38:14,416 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:38:14,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:38:14,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:38:14,417 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:38:14,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:38:14,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:38:14,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:38:14,419 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_2c42c28f-58cf-4681-90c3-c8fac4392c4e/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c42c28f-58cf-4681-90c3-c8fac4392c4e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cbe8dd40fecf4391efe5e4ba3939c64a9fdbbfb53083def47a68bbefda43a3c [2022-11-03 02:38:14,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:38:14,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:38:14,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:38:14,868 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:38:14,870 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:38:14,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c42c28f-58cf-4681-90c3-c8fac4392c4e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c [2022-11-03 02:38:14,950 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c42c28f-58cf-4681-90c3-c8fac4392c4e/bin/utaipan-7li7fVZpFI/data/5e1545fc1/33845a16f802440f86387eb5f83b5c29/FLAG9e217d7d0 [2022-11-03 02:38:15,585 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:38:15,586 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c42c28f-58cf-4681-90c3-c8fac4392c4e/sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c [2022-11-03 02:38:15,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c42c28f-58cf-4681-90c3-c8fac4392c4e/bin/utaipan-7li7fVZpFI/data/5e1545fc1/33845a16f802440f86387eb5f83b5c29/FLAG9e217d7d0 [2022-11-03 02:38:15,880 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c42c28f-58cf-4681-90c3-c8fac4392c4e/bin/utaipan-7li7fVZpFI/data/5e1545fc1/33845a16f802440f86387eb5f83b5c29 [2022-11-03 02:38:15,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:38:15,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:38:15,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:38:15,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:38:15,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:38:15,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:38:15" (1/1) ... [2022-11-03 02:38:15,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1294d8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:15, skipping insertion in model container [2022-11-03 02:38:15,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:38:15" (1/1) ... [2022-11-03 02:38:15,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:38:15,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:38:16,325 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_2c42c28f-58cf-4681-90c3-c8fac4392c4e/sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c[5938,5951] [2022-11-03 02:38:16,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:38:16,356 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:38:16,405 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_2c42c28f-58cf-4681-90c3-c8fac4392c4e/sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c[5938,5951] [2022-11-03 02:38:16,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:38:16,431 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:38:16,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:16 WrapperNode [2022-11-03 02:38:16,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:38:16,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:38:16,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:38:16,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:38:16,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:16" (1/1) ... [2022-11-03 02:38:16,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:16" (1/1) ... [2022-11-03 02:38:16,492 INFO L138 Inliner]: procedures = 25, calls = 120, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 248 [2022-11-03 02:38:16,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:38:16,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:38:16,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:38:16,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:38:16,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:16" (1/1) ... [2022-11-03 02:38:16,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:16" (1/1) ... [2022-11-03 02:38:16,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:16" (1/1) ... [2022-11-03 02:38:16,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:16" (1/1) ... [2022-11-03 02:38:16,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:16" (1/1) ... [2022-11-03 02:38:16,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:16" (1/1) ... [2022-11-03 02:38:16,530 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:16" (1/1) ... [2022-11-03 02:38:16,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:16" (1/1) ... [2022-11-03 02:38:16,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:38:16,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:38:16,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:38:16,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:38:16,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:16" (1/1) ... [2022-11-03 02:38:16,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:38:16,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c42c28f-58cf-4681-90c3-c8fac4392c4e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:16,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c42c28f-58cf-4681-90c3-c8fac4392c4e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:38:16,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c42c28f-58cf-4681-90c3-c8fac4392c4e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:38:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:38:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:38:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:38:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:38:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-03 02:38:16,666 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-03 02:38:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-03 02:38:16,666 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-03 02:38:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-03 02:38:16,667 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-03 02:38:16,667 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-03 02:38:16,667 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-03 02:38:16,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:38:16,667 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-03 02:38:16,667 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-03 02:38:16,667 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-03 02:38:16,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-03 02:38:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-03 02:38:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-03 02:38:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:38:16,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:38:16,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:38:16,671 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 02:38:16,822 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:38:16,825 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:38:17,401 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:38:17,492 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:38:17,493 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-03 02:38:17,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:38:17 BoogieIcfgContainer [2022-11-03 02:38:17,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:38:17,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:38:17,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:38:17,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:38:17,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:38:15" (1/3) ... [2022-11-03 02:38:17,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710ed09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:38:17, skipping insertion in model container [2022-11-03 02:38:17,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:16" (2/3) ... [2022-11-03 02:38:17,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710ed09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:38:17, skipping insertion in model container [2022-11-03 02:38:17,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:38:17" (3/3) ... [2022-11-03 02:38:17,507 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier-loop.wvr.c [2022-11-03 02:38:17,517 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 02:38:17,530 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:38:17,530 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:38:17,530 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 02:38:17,735 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-03 02:38:17,798 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:38:17,821 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 252 transitions, 576 flow [2022-11-03 02:38:17,828 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 252 transitions, 576 flow [2022-11-03 02:38:17,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 252 transitions, 576 flow [2022-11-03 02:38:18,039 INFO L130 PetriNetUnfolder]: 14/224 cut-off events. [2022-11-03 02:38:18,040 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-03 02:38:18,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 224 events. 14/224 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 359 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 187. Up to 3 conditions per place. [2022-11-03 02:38:18,061 INFO L118 LiptonReduction]: Number of co-enabled transitions 10592 [2022-11-03 02:38:24,525 INFO L133 LiptonReduction]: Checked pairs total: 66149 [2022-11-03 02:38:24,526 INFO L135 LiptonReduction]: Total number of compositions: 165 [2022-11-03 02:38:24,539 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 115 places, 104 transitions, 280 flow [2022-11-03 02:38:31,556 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 111864 states, 111863 states have (on average 5.166006633113719) internal successors, (577885), 111863 states have internal predecessors, (577885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:31,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:38:31,618 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;@53d4a528, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:38:31,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-03 02:38:31,801 INFO L276 IsEmpty]: Start isEmpty. Operand has 111864 states, 111863 states have (on average 5.166006633113719) internal successors, (577885), 111863 states have internal predecessors, (577885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:33,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 02:38:33,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:33,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:33,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:38:33,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:33,173 INFO L85 PathProgramCache]: Analyzing trace with hash -245478316, now seen corresponding path program 1 times [2022-11-03 02:38:33,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:33,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687073638] [2022-11-03 02:38:33,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:33,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:35,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:35,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:35,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687073638] [2022-11-03 02:38:35,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687073638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:35,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:35,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:38:35,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522540714] [2022-11-03 02:38:35,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:35,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:35,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:35,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:35,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:35,410 INFO L87 Difference]: Start difference. First operand has 111864 states, 111863 states have (on average 5.166006633113719) internal successors, (577885), 111863 states have internal predecessors, (577885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:38,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:38,420 INFO L93 Difference]: Finished difference Result 116865 states and 600755 transitions. [2022-11-03 02:38:38,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:38,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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 51 [2022-11-03 02:38:38,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:40,488 INFO L225 Difference]: With dead ends: 116865 [2022-11-03 02:38:40,488 INFO L226 Difference]: Without dead ends: 116684 [2022-11-03 02:38:40,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:40,496 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:40,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 68 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:38:40,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116684 states. [2022-11-03 02:38:47,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116684 to 113828. [2022-11-03 02:38:48,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113828 states, 113827 states have (on average 5.150816590088468) internal successors, (586302), 113827 states have internal predecessors, (586302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:50,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113828 states to 113828 states and 586302 transitions. [2022-11-03 02:38:50,319 INFO L78 Accepts]: Start accepts. Automaton has 113828 states and 586302 transitions. Word has length 51 [2022-11-03 02:38:50,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:50,321 INFO L495 AbstractCegarLoop]: Abstraction has 113828 states and 586302 transitions. [2022-11-03 02:38:50,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 113828 states and 586302 transitions. [2022-11-03 02:38:51,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 02:38:51,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:51,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:51,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:38:51,811 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:38:51,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:51,812 INFO L85 PathProgramCache]: Analyzing trace with hash -232742159, now seen corresponding path program 1 times [2022-11-03 02:38:51,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:51,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701064955] [2022-11-03 02:38:51,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:51,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:52,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:52,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701064955] [2022-11-03 02:38:52,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701064955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:52,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:52,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:38:52,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039733490] [2022-11-03 02:38:52,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:52,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:52,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:52,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:52,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:52,273 INFO L87 Difference]: Start difference. First operand 113828 states and 586302 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:54,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:54,723 INFO L93 Difference]: Finished difference Result 113828 states and 580140 transitions. [2022-11-03 02:38:54,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:54,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2022-11-03 02:38:54,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:55,823 INFO L225 Difference]: With dead ends: 113828 [2022-11-03 02:38:55,823 INFO L226 Difference]: Without dead ends: 106556 [2022-11-03 02:38:55,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:55,825 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 62 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:55,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 95 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:38:56,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106556 states. [2022-11-03 02:39:02,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106556 to 106556. [2022-11-03 02:39:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106556 states, 106555 states have (on average 5.08623715452114) internal successors, (541964), 106555 states have internal predecessors, (541964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:39:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106556 states to 106556 states and 541964 transitions. [2022-11-03 02:39:03,509 INFO L78 Accepts]: Start accepts. Automaton has 106556 states and 541964 transitions. Word has length 59 [2022-11-03 02:39:03,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:03,510 INFO L495 AbstractCegarLoop]: Abstraction has 106556 states and 541964 transitions. [2022-11-03 02:39:03,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:39:03,511 INFO L276 IsEmpty]: Start isEmpty. Operand 106556 states and 541964 transitions. [2022-11-03 02:39:05,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 02:39:05,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:05,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:39:05,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:39:05,106 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:39:05,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:05,107 INFO L85 PathProgramCache]: Analyzing trace with hash -628450822, now seen corresponding path program 1 times [2022-11-03 02:39:05,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:05,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382637667] [2022-11-03 02:39:05,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:05,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:05,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:05,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382637667] [2022-11-03 02:39:05,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382637667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:05,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:39:05,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:39:05,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154095819] [2022-11-03 02:39:05,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:05,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:39:05,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:05,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:39:05,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:39:05,465 INFO L87 Difference]: Start difference. First operand 106556 states and 541964 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:39:07,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:07,528 INFO L93 Difference]: Finished difference Result 99388 states and 501680 transitions. [2022-11-03 02:39:07,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:39:07,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2022-11-03 02:39:07,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:08,639 INFO L225 Difference]: With dead ends: 99388 [2022-11-03 02:39:08,639 INFO L226 Difference]: Without dead ends: 96660 [2022-11-03 02:39:08,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:39:08,641 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 63 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:08,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 93 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:39:09,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96660 states. [2022-11-03 02:39:13,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96660 to 96660. [2022-11-03 02:39:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96660 states, 96659 states have (on average 5.041227407690955) internal successors, (487280), 96659 states have internal predecessors, (487280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:39:15,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96660 states to 96660 states and 487280 transitions. [2022-11-03 02:39:15,189 INFO L78 Accepts]: Start accepts. Automaton has 96660 states and 487280 transitions. Word has length 59 [2022-11-03 02:39:15,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:15,193 INFO L495 AbstractCegarLoop]: Abstraction has 96660 states and 487280 transitions. [2022-11-03 02:39:15,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:39:15,194 INFO L276 IsEmpty]: Start isEmpty. Operand 96660 states and 487280 transitions. [2022-11-03 02:39:15,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 02:39:15,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:15,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:39:15,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:39:15,614 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:39:15,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:15,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1374349623, now seen corresponding path program 1 times [2022-11-03 02:39:15,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:15,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589782265] [2022-11-03 02:39:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:15,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:15,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:16,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589782265] [2022-11-03 02:39:16,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589782265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:16,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:39:16,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:39:16,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970732900] [2022-11-03 02:39:16,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:16,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:39:16,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:16,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:39:16,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:39:16,013 INFO L87 Difference]: Start difference. First operand 96660 states and 487280 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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)