./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/bigshot_s2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/bigshot_s2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh --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 fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:53:44,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:53:44,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:53:44,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:53:44,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:53:44,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:53:44,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:53:44,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:53:44,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:53:44,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:53:44,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:53:44,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:53:44,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:53:44,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:53:44,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:53:44,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:53:44,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:53:44,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:53:44,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:53:44,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:53:44,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:53:44,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:53:44,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:53:44,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:53:44,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:53:44,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:53:44,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:53:44,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:53:44,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:53:44,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:53:44,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:53:44,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:53:44,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:53:44,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:53:44,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:53:44,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:53:44,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:53:44,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:53:44,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:53:44,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:53:44,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:53:44,490 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 09:53:44,521 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:53:44,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:53:44,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:53:44,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:53:44,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:53:44,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:53:44,523 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:53:44,523 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:53:44,523 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:53:44,523 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:53:44,523 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:53:44,523 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:53:44,524 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:53:44,524 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:53:44,524 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:53:44,524 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:53:44,524 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:53:44,524 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:53:44,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:53:44,525 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:53:44,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:53:44,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:53:44,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:53:44,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:53:44,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:53:44,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:53:44,526 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:53:44,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:53:44,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:53:44,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:53:44,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:53:44,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:53:44,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:53:44,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:53:44,527 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:53:44,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:53:44,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:53:44,527 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:53:44,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:53:44,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:53:44,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:53:44,528 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_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb [2022-12-14 09:53:44,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:53:44,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:53:44,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:53:44,730 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:53:44,730 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:53:44,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread/bigshot_s2.i [2022-12-14 09:53:47,303 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:53:47,500 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:53:47,501 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/sv-benchmarks/c/pthread/bigshot_s2.i [2022-12-14 09:53:47,514 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/data/204636a12/cfe401bf455c4637be7c4d972a4ff1f6/FLAGde5a14086 [2022-12-14 09:53:47,527 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/data/204636a12/cfe401bf455c4637be7c4d972a4ff1f6 [2022-12-14 09:53:47,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:53:47,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:53:47,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:53:47,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:53:47,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:53:47,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:53:47" (1/1) ... [2022-12-14 09:53:47,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a0f303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:53:47, skipping insertion in model container [2022-12-14 09:53:47,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:53:47" (1/1) ... [2022-12-14 09:53:47,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:53:47,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:53:48,036 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/sv-benchmarks/c/pthread/bigshot_s2.i[55203,55216] [2022-12-14 09:53:48,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:53:48,061 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:53:48,097 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/sv-benchmarks/c/pthread/bigshot_s2.i[55203,55216] [2022-12-14 09:53:48,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:53:48,167 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:53:48,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:53:48 WrapperNode [2022-12-14 09:53:48,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:53:48,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:53:48,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:53:48,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:53:48,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:53:48" (1/1) ... [2022-12-14 09:53:48,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:53:48" (1/1) ... [2022-12-14 09:53:48,213 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-14 09:53:48,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:53:48,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:53:48,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:53:48,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:53:48,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:53:48" (1/1) ... [2022-12-14 09:53:48,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:53:48" (1/1) ... [2022-12-14 09:53:48,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:53:48" (1/1) ... [2022-12-14 09:53:48,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:53:48" (1/1) ... [2022-12-14 09:53:48,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:53:48" (1/1) ... [2022-12-14 09:53:48,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:53:48" (1/1) ... [2022-12-14 09:53:48,238 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:53:48" (1/1) ... [2022-12-14 09:53:48,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:53:48" (1/1) ... [2022-12-14 09:53:48,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:53:48,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:53:48,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:53:48,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:53:48,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:53:48" (1/1) ... [2022-12-14 09:53:48,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:53:48,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:53:48,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:53:48,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:53:48,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 09:53:48,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 09:53:48,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 09:53:48,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 09:53:48,309 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-14 09:53:48,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-14 09:53:48,309 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-14 09:53:48,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-14 09:53:48,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 09:53:48,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 09:53:48,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:53:48,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:53:48,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:53:48,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:53:48,311 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 09:53:48,412 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:53:48,414 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:53:48,573 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:53:48,580 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:53:48,581 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 09:53:48,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:53:48 BoogieIcfgContainer [2022-12-14 09:53:48,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:53:48,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:53:48,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:53:48,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:53:48,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:53:47" (1/3) ... [2022-12-14 09:53:48,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbc163f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:53:48, skipping insertion in model container [2022-12-14 09:53:48,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:53:48" (2/3) ... [2022-12-14 09:53:48,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbc163f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:53:48, skipping insertion in model container [2022-12-14 09:53:48,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:53:48" (3/3) ... [2022-12-14 09:53:48,591 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2022-12-14 09:53:48,599 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 09:53:48,608 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:53:48,608 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:53:48,608 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 09:53:48,665 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 09:53:48,689 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 09:53:48,700 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 90 transitions, 196 flow [2022-12-14 09:53:48,702 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 90 transitions, 196 flow [2022-12-14 09:53:48,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 90 transitions, 196 flow [2022-12-14 09:53:48,736 INFO L130 PetriNetUnfolder]: 4/88 cut-off events. [2022-12-14 09:53:48,737 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 09:53:48,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 4/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-12-14 09:53:48,740 INFO L119 LiptonReduction]: Number of co-enabled transitions 156 [2022-12-14 09:53:50,988 INFO L134 LiptonReduction]: Checked pairs total: 195 [2022-12-14 09:53:50,988 INFO L136 LiptonReduction]: Total number of compositions: 85 [2022-12-14 09:53:50,993 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions, 50 flow [2022-12-14 09:53:51,001 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:53:51,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:53:51,021 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;@7ebd5d24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:53:51,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-14 09:53:51,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:53:51,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 09:53:51,027 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:53:51,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:53:51,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-14 09:53:51,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:53:51,032 INFO L85 PathProgramCache]: Analyzing trace with hash 310474121, now seen corresponding path program 1 times [2022-12-14 09:53:51,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:53:51,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342488564] [2022-12-14 09:53:51,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:53:51,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:53:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:53:51,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:53:51,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:53:51,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342488564] [2022-12-14 09:53:51,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342488564] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:53:51,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:53:51,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:53:51,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621465573] [2022-12-14 09:53:51,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:53:51,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:53:51,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:53:51,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:53:51,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:53:51,260 INFO L87 Difference]: Start difference. First operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:53:51,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:53:51,292 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2022-12-14 09:53:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:53:51,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-12-14 09:53:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:53:51,299 INFO L225 Difference]: With dead ends: 16 [2022-12-14 09:53:51,299 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 09:53:51,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:53:51,302 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:53:51,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:53:51,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 09:53:51,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 09:53:51,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:53:51,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-12-14 09:53:51,323 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 11 [2022-12-14 09:53:51,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:53:51,324 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-12-14 09:53:51,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:53:51,324 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-12-14 09:53:51,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 09:53:51,324 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:53:51,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:53:51,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:53:51,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-14 09:53:51,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:53:51,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1025306728, now seen corresponding path program 1 times [2022-12-14 09:53:51,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:53:51,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597175706] [2022-12-14 09:53:51,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:53:51,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:53:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:53:51,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:53:51,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:53:51,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597175706] [2022-12-14 09:53:51,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597175706] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:53:51,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:53:51,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 09:53:51,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726666114] [2022-12-14 09:53:51,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:53:51,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 09:53:51,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:53:51,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 09:53:51,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 09:53:51,747 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:53:51,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:53:51,840 INFO L93 Difference]: Finished difference Result 20 states and 28 transitions. [2022-12-14 09:53:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 09:53:51,840 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 12 [2022-12-14 09:53:51,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:53:51,840 INFO L225 Difference]: With dead ends: 20 [2022-12-14 09:53:51,841 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 09:53:51,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-12-14 09:53:51,841 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:53:51,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:53:51,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 09:53:51,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-12-14 09:53:51,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:53:51,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-12-14 09:53:51,844 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 12 [2022-12-14 09:53:51,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:53:51,845 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-12-14 09:53:51,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:53:51,845 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-12-14 09:53:51,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 09:53:51,845 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:53:51,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:53:51,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 09:53:51,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-14 09:53:51,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:53:51,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1719128992, now seen corresponding path program 1 times [2022-12-14 09:53:51,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:53:51,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707676718] [2022-12-14 09:53:51,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:53:51,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:53:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:53:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:53:52,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:53:52,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707676718] [2022-12-14 09:53:52,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707676718] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:53:52,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993315874] [2022-12-14 09:53:52,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:53:52,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:53:52,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:53:52,176 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:53:52,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 09:53:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:53:52,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-14 09:53:52,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:53:52,330 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-12-14 09:53:52,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2022-12-14 09:53:52,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 09:53:52,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 09:53:52,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:53:52,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:53:52,486 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 09:53:52,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 23 [2022-12-14 09:53:52,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:53:52,528 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 09:53:52,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-12-14 09:53:52,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:53:52,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:53:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:53:52,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993315874] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:53:52,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [778261431] [2022-12-14 09:53:52,717 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 09:53:52,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:53:52,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 17 [2022-12-14 09:53:52,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515662453] [2022-12-14 09:53:52,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:53:52,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 09:53:52,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:53:52,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 09:53:52,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-12-14 09:53:52,721 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:53:53,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:53:53,091 INFO L93 Difference]: Finished difference Result 32 states and 45 transitions. [2022-12-14 09:53:53,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 09:53:53,092 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 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 [2022-12-14 09:53:53,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:53:53,092 INFO L225 Difference]: With dead ends: 32 [2022-12-14 09:53:53,092 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 09:53:53,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2022-12-14 09:53:53,094 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:53:53,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:53:53,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 09:53:53,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-12-14 09:53:53,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:53:53,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2022-12-14 09:53:53,098 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 13 [2022-12-14 09:53:53,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:53:53,098 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2022-12-14 09:53:53,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:53:53,098 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2022-12-14 09:53:53,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 09:53:53,098 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:53:53,098 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:53:53,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:53:53,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:53:53,299 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-14 09:53:53,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:53:53,300 INFO L85 PathProgramCache]: Analyzing trace with hash 777518696, now seen corresponding path program 2 times [2022-12-14 09:53:53,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:53:53,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736029267] [2022-12-14 09:53:53,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:53:53,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:53:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:53:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:53:53,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:53:53,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736029267] [2022-12-14 09:53:53,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736029267] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:53:53,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403917181] [2022-12-14 09:53:53,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 09:53:53,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:53:53,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:53:53,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:53:53,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 09:53:53,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 09:53:53,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:53:53,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-14 09:53:53,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:53:53,899 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-12-14 09:53:53,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 34 treesize of output 53 [2022-12-14 09:53:53,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 09:53:54,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:53:54,027 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-14 09:53:54,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2022-12-14 09:53:54,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 09:53:54,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 09:53:54,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 09:53:54,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 09:53:54,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 09:53:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:53:54,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:53:54,407 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_112) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (+ 2 |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1|)))) is different from false [2022-12-14 09:53:54,455 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_112) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| 4)))) is different from false [2022-12-14 09:53:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-12-14 09:53:54,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403917181] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:53:54,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2116545866] [2022-12-14 09:53:54,605 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 09:53:54,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:53:54,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2022-12-14 09:53:54,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553036305] [2022-12-14 09:53:54,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:53:54,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-14 09:53:54,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:53:54,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-14 09:53:54,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=530, Unknown=6, NotChecked=94, Total=702 [2022-12-14 09:53:54,608 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:53:55,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:53:55,412 INFO L93 Difference]: Finished difference Result 28 states and 40 transitions. [2022-12-14 09:53:55,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 09:53:55,412 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 26 states have internal predecessors, (44), 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 16 [2022-12-14 09:53:55,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:53:55,413 INFO L225 Difference]: With dead ends: 28 [2022-12-14 09:53:55,413 INFO L226 Difference]: Without dead ends: 28 [2022-12-14 09:53:55,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=172, Invalid=822, Unknown=6, NotChecked=122, Total=1122 [2022-12-14 09:53:55,415 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 36 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:53:55,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 315 Invalid, 6 Unknown, 46 Unchecked, 0.2s Time] [2022-12-14 09:53:55,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-14 09:53:55,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2022-12-14 09:53:55,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:53:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2022-12-14 09:53:55,417 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 16 [2022-12-14 09:53:55,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:53:55,418 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2022-12-14 09:53:55,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:53:55,418 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2022-12-14 09:53:55,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 09:53:55,418 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:53:55,418 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:53:55,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 09:53:55,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:53:55,620 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-14 09:53:55,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:53:55,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1667332704, now seen corresponding path program 3 times [2022-12-14 09:53:55,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:53:55,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696077806] [2022-12-14 09:53:55,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:53:55,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:53:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:53:56,068 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:53:56,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:53:56,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696077806] [2022-12-14 09:53:56,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696077806] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:53:56,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579525212] [2022-12-14 09:53:56,068 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 09:53:56,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:53:56,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:53:56,069 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:53:56,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 09:53:56,157 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 09:53:56,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:53:56,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-14 09:53:56,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:53:56,181 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-12-14 09:53:56,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2022-12-14 09:53:56,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 09:53:56,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 09:53:56,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:53:56,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:53:56,312 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 09:53:56,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 23 [2022-12-14 09:53:56,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:53:56,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:53:56,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:53:56,349 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 09:53:56,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 09:53:56,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:53:56,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:53:56,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:53:56,396 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 09:53:56,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 09:53:56,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:53:56,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:53:56,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:53:56,447 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 09:53:56,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 09:53:56,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:53:56,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:53:56,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:53:56,497 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 09:53:56,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 09:53:56,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:53:56,542 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 09:53:56,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 09:53:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:53:56,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:54:23,887 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_168 Int) (v_ArrVal_166 Int) (v_ArrVal_165 Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_74| Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_73| Int) (v_ArrVal_172 Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_72| Int) (v_ArrVal_170 Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_75| Int)) (or (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1|) v_ArrVal_165) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_75| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_166) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_74| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_168) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_73| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_170) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_72| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_172)) c_~v~0.base) c_~v~0.offset)) (not (<= (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_74| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_73|)) (not (<= (+ |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_75|)) (not (<= (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_73| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_72|)) (not (<= (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_75| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_74|)))) is different from false [2022-12-14 09:54:40,180 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 2 times theorem prover too weak. 0 trivial. 5 not checked. [2022-12-14 09:54:40,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579525212] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:54:40,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1666034322] [2022-12-14 09:54:40,181 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 09:54:40,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:54:40,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 29 [2022-12-14 09:54:40,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720391579] [2022-12-14 09:54:40,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:54:40,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 09:54:40,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:54:40,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 09:54:40,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=667, Unknown=20, NotChecked=54, Total=870 [2022-12-14 09:54:40,184 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:54:41,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:54:41,094 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-12-14 09:54:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 09:54:41,094 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 29 states have internal predecessors, (49), 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 17 [2022-12-14 09:54:41,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:54:41,094 INFO L225 Difference]: With dead ends: 27 [2022-12-14 09:54:41,094 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 09:54:41,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 44.3s TimeCoverageRelationStatistics Valid=282, Invalid=1034, Unknown=20, NotChecked=70, Total=1406 [2022-12-14 09:54:41,095 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 67 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:54:41,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 0 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 238 Invalid, 0 Unknown, 11 Unchecked, 0.3s Time] [2022-12-14 09:54:41,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 09:54:41,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 09:54:41,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:54:41,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 09:54:41,096 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-12-14 09:54:41,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:54:41,096 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 09:54:41,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:54:41,096 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 09:54:41,096 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 09:54:41,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-14 09:54:41,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-14 09:54:41,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-14 09:54:41,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 09:54:41,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:54:41,307 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-12-14 09:54:41,310 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 09:54:41,310 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 09:54:41,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 09:54:41 BasicIcfg [2022-12-14 09:54:41,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 09:54:41,313 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 09:54:41,313 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 09:54:41,313 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 09:54:41,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:53:48" (3/4) ... [2022-12-14 09:54:41,316 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 09:54:41,321 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-14 09:54:41,321 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-14 09:54:41,325 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-12-14 09:54:41,325 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-12-14 09:54:41,325 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 09:54:41,325 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 09:54:41,325 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 09:54:41,352 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 09:54:41,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 09:54:41,353 INFO L158 Benchmark]: Toolchain (without parser) took 53823.37ms. Allocated memory was 127.9MB in the beginning and 157.3MB in the end (delta: 29.4MB). Free memory was 85.9MB in the beginning and 50.0MB in the end (delta: 35.9MB). Peak memory consumption was 66.6MB. Max. memory is 16.1GB. [2022-12-14 09:54:41,353 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 127.9MB. Free memory is still 95.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:54:41,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 637.59ms. Allocated memory is still 127.9MB. Free memory was 85.9MB in the beginning and 53.6MB in the end (delta: 32.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-12-14 09:54:41,354 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.21ms. Allocated memory is still 127.9MB. Free memory was 53.6MB in the beginning and 51.1MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 09:54:41,354 INFO L158 Benchmark]: Boogie Preprocessor took 27.00ms. Allocated memory is still 127.9MB. Free memory was 51.1MB in the beginning and 49.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:54:41,354 INFO L158 Benchmark]: RCFGBuilder took 340.80ms. Allocated memory is still 127.9MB. Free memory was 49.7MB in the beginning and 94.4MB in the end (delta: -44.6MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2022-12-14 09:54:41,355 INFO L158 Benchmark]: TraceAbstraction took 52727.25ms. Allocated memory was 127.9MB in the beginning and 157.3MB in the end (delta: 29.4MB). Free memory was 93.7MB in the beginning and 52.7MB in the end (delta: 41.0MB). Peak memory consumption was 70.8MB. Max. memory is 16.1GB. [2022-12-14 09:54:41,355 INFO L158 Benchmark]: Witness Printer took 39.81ms. Allocated memory is still 157.3MB. Free memory was 52.7MB in the beginning and 50.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:54:41,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 127.9MB. Free memory is still 95.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 637.59ms. Allocated memory is still 127.9MB. Free memory was 85.9MB in the beginning and 53.6MB in the end (delta: 32.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.21ms. Allocated memory is still 127.9MB. Free memory was 53.6MB in the beginning and 51.1MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.00ms. Allocated memory is still 127.9MB. Free memory was 51.1MB in the beginning and 49.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 340.80ms. Allocated memory is still 127.9MB. Free memory was 49.7MB in the beginning and 94.4MB in the end (delta: -44.6MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * TraceAbstraction took 52727.25ms. Allocated memory was 127.9MB in the beginning and 157.3MB in the end (delta: 29.4MB). Free memory was 93.7MB in the beginning and 52.7MB in the end (delta: 41.0MB). Peak memory consumption was 70.8MB. Max. memory is 16.1GB. * Witness Printer took 39.81ms. Allocated memory is still 157.3MB. Free memory was 52.7MB in the beginning and 50.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 93 PlacesBefore, 22 PlacesAfterwards, 90 TransitionsBefore, 17 TransitionsAfterwards, 156 CoEnabledTransitionPairs, 6 FixpointIterations, 50 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 85 TotalNumberOfCompositions, 195 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 165, independent: 155, independent conditional: 0, independent unconditional: 155, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 129, independent: 121, independent conditional: 0, independent unconditional: 121, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 129, independent: 121, independent conditional: 0, independent unconditional: 121, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 17, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 165, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 129, unknown conditional: 0, unknown unconditional: 129] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1107]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 114 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 52.6s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 166 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 57 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 127 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 751 IncrementalHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 127 mSolverCounterUnsat, 0 mSDtfsCounter, 751 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 98 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 45.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 46.9s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 150 ConstructedInterpolants, 25 QuantifiedInterpolants, 2642 SizeOfPredicates, 27 NumberOfNonLiveVariables, 612 ConjunctsInSsa, 138 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 10/78 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 09:54:41,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb89dc2-3678-4334-a7fb-fa103c7c816a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE