./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp --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 f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:58:54,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:58:54,251 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-06 20:58:54,264 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:58:54,265 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:58:54,312 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:58:54,313 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:58:54,314 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:58:54,315 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:58:54,320 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:58:54,321 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:58:54,322 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:58:54,323 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:58:54,325 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:58:54,325 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:58:54,326 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:58:54,326 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:58:54,327 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:58:54,327 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:58:54,328 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:58:54,328 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:58:54,329 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:58:54,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:58:54,331 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 20:58:54,331 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:58:54,332 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:58:54,332 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:58:54,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:58:54,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 20:58:54,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:58:54,335 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 20:58:54,336 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:58:54,336 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 20:58:54,336 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:58:54,337 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:58:54,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:58:54,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:58:54,338 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:58:54,338 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:58:54,339 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 20:58:54,339 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:58:54,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:58:54,340 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 20:58:54,340 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:58:54,341 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:58:54,341 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f [2023-11-06 20:58:54,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:58:54,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:58:54,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:58:54,745 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:58:54,745 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:58:54,747 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/pthread-wmm/safe017_tso.i [2023-11-06 20:58:57,936 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:58:58,295 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:58:58,298 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b68674-69d4-40f5-91f1-7ac56c4009e9/sv-benchmarks/c/pthread-wmm/safe017_tso.i [2023-11-06 20:58:58,328 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp/data/fb2832c86/530f53aa778f4182afc7ee9e9aeed374/FLAGb54f6dd36 [2023-11-06 20:58:58,348 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp/data/fb2832c86/530f53aa778f4182afc7ee9e9aeed374 [2023-11-06 20:58:58,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:58:58,356 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:58:58,360 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:58:58,360 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:58:58,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:58:58,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:58:58" (1/1) ... [2023-11-06 20:58:58,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1727ff87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:58, skipping insertion in model container [2023-11-06 20:58:58,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:58:58" (1/1) ... [2023-11-06 20:58:58,429 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:58:58,658 WARN L240 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_a6b68674-69d4-40f5-91f1-7ac56c4009e9/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2023-11-06 20:58:58,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:58:58,878 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:58:58,891 WARN L240 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_a6b68674-69d4-40f5-91f1-7ac56c4009e9/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2023-11-06 20:58:58,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:58:58,959 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:58:58,960 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:58:58,968 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:58:58,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:58 WrapperNode [2023-11-06 20:58:58,969 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:58:58,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:58:58,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:58:58,971 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:58:58,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:58" (1/1) ... [2023-11-06 20:58:59,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:58" (1/1) ... [2023-11-06 20:58:59,047 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2023-11-06 20:58:59,048 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:58:59,048 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:58:59,049 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:58:59,049 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:58:59,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:58" (1/1) ... [2023-11-06 20:58:59,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:58" (1/1) ... [2023-11-06 20:58:59,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:58" (1/1) ... [2023-11-06 20:58:59,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:58" (1/1) ... [2023-11-06 20:58:59,081 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:58" (1/1) ... [2023-11-06 20:58:59,083 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:58" (1/1) ... [2023-11-06 20:58:59,101 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:58" (1/1) ... [2023-11-06 20:58:59,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:58" (1/1) ... [2023-11-06 20:58:59,120 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:58:59,122 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:58:59,122 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:58:59,122 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:58:59,123 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:58" (1/1) ... [2023-11-06 20:58:59,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:58:59,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:58:59,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:58:59,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:58:59,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 20:58:59,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 20:58:59,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:58:59,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:58:59,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:58:59,209 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 20:58:59,210 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 20:58:59,210 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 20:58:59,210 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 20:58:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 20:58:59,211 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 20:58:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:58:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 20:58:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:58:59,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:58:59,214 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 20:58:59,416 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:58:59,421 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:58:59,692 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:58:59,699 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:58:59,699 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 20:58:59,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:58:59 BoogieIcfgContainer [2023-11-06 20:58:59,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:58:59,704 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:58:59,706 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:58:59,709 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:58:59,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:58:58" (1/3) ... [2023-11-06 20:58:59,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6144ce2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:58:59, skipping insertion in model container [2023-11-06 20:58:59,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:58" (2/3) ... [2023-11-06 20:58:59,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6144ce2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:58:59, skipping insertion in model container [2023-11-06 20:58:59,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:58:59" (3/3) ... [2023-11-06 20:58:59,716 INFO L112 eAbstractionObserver]: Analyzing ICFG safe017_tso.i [2023-11-06 20:58:59,726 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 20:58:59,738 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:58:59,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 20:58:59,738 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 20:58:59,808 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 20:58:59,854 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 20:58:59,873 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 85 transitions, 182 flow [2023-11-06 20:58:59,877 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 85 transitions, 182 flow [2023-11-06 20:58:59,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 182 flow [2023-11-06 20:58:59,946 INFO L124 PetriNetUnfolderBase]: 2/82 cut-off events. [2023-11-06 20:58:59,946 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 20:58:59,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-11-06 20:58:59,960 INFO L119 LiptonReduction]: Number of co-enabled transitions 1518 [2023-11-06 20:59:02,880 INFO L134 LiptonReduction]: Checked pairs total: 2781 [2023-11-06 20:59:02,880 INFO L136 LiptonReduction]: Total number of compositions: 77 [2023-11-06 20:59:02,888 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 21 transitions, 54 flow [2023-11-06 20:59:02,943 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 178 states, 177 states have (on average 2.7231638418079096) internal successors, (482), 177 states have internal predecessors, (482), 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) [2023-11-06 20:59:02,964 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:59:02,971 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;@7b904bcc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:59:02,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 20:59:02,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 177 states have (on average 2.7231638418079096) internal successors, (482), 177 states have internal predecessors, (482), 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) [2023-11-06 20:59:02,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 20:59:02,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:02,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:59:02,982 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:59:02,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:02,987 INFO L85 PathProgramCache]: Analyzing trace with hash -3726065, now seen corresponding path program 1 times [2023-11-06 20:59:02,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:02,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990230232] [2023-11-06 20:59:02,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:02,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:59:03,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:03,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990230232] [2023-11-06 20:59:03,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990230232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:59:03,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:59:03,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 20:59:03,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251800198] [2023-11-06 20:59:03,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:59:03,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:59:03,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:59:03,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:59:03,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:59:03,630 INFO L87 Difference]: Start difference. First operand has 178 states, 177 states have (on average 2.7231638418079096) internal successors, (482), 177 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-06 20:59:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:59:03,732 INFO L93 Difference]: Finished difference Result 269 states and 676 transitions. [2023-11-06 20:59:03,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:59:03,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2023-11-06 20:59:03,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:59:03,755 INFO L225 Difference]: With dead ends: 269 [2023-11-06 20:59:03,756 INFO L226 Difference]: Without dead ends: 237 [2023-11-06 20:59:03,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:59:03,761 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:59:03,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:59:03,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-11-06 20:59:03,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 209. [2023-11-06 20:59:03,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 2.5288461538461537) internal successors, (526), 208 states have internal predecessors, (526), 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) [2023-11-06 20:59:03,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 526 transitions. [2023-11-06 20:59:03,832 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 526 transitions. Word has length 8 [2023-11-06 20:59:03,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:59:03,833 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 526 transitions. [2023-11-06 20:59:03,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-06 20:59:03,834 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 526 transitions. [2023-11-06 20:59:03,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 20:59:03,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:03,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:59:03,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 20:59:03,836 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:59:03,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:03,837 INFO L85 PathProgramCache]: Analyzing trace with hash -115527583, now seen corresponding path program 1 times [2023-11-06 20:59:03,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:03,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756542176] [2023-11-06 20:59:03,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:03,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:59:04,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:04,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756542176] [2023-11-06 20:59:04,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756542176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:59:04,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:59:04,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:59:04,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824950554] [2023-11-06 20:59:04,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:59:04,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:59:04,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:59:04,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:59:04,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:59:04,073 INFO L87 Difference]: Start difference. First operand 209 states and 526 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:59:04,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:59:04,136 INFO L93 Difference]: Finished difference Result 222 states and 537 transitions. [2023-11-06 20:59:04,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:59:04,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-06 20:59:04,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:59:04,141 INFO L225 Difference]: With dead ends: 222 [2023-11-06 20:59:04,141 INFO L226 Difference]: Without dead ends: 222 [2023-11-06 20:59:04,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:59:04,144 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:59:04,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 7 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:59:04,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-11-06 20:59:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 182. [2023-11-06 20:59:04,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.5138121546961325) internal successors, (455), 181 states have internal predecessors, (455), 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) [2023-11-06 20:59:04,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 455 transitions. [2023-11-06 20:59:04,183 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 455 transitions. Word has length 9 [2023-11-06 20:59:04,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:59:04,184 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 455 transitions. [2023-11-06 20:59:04,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:59:04,184 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 455 transitions. [2023-11-06 20:59:04,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 20:59:04,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:04,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:59:04,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 20:59:04,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:59:04,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:04,187 INFO L85 PathProgramCache]: Analyzing trace with hash -115556413, now seen corresponding path program 1 times [2023-11-06 20:59:04,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:04,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470565626] [2023-11-06 20:59:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:04,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:04,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:59:04,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:04,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470565626] [2023-11-06 20:59:04,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470565626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:59:04,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:59:04,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:59:04,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630407644] [2023-11-06 20:59:04,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:59:04,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:59:04,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:59:04,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:59:04,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:59:04,390 INFO L87 Difference]: Start difference. First operand 182 states and 455 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:59:04,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:59:04,458 INFO L93 Difference]: Finished difference Result 212 states and 507 transitions. [2023-11-06 20:59:04,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:59:04,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-06 20:59:04,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:59:04,461 INFO L225 Difference]: With dead ends: 212 [2023-11-06 20:59:04,461 INFO L226 Difference]: Without dead ends: 212 [2023-11-06 20:59:04,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:59:04,466 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:59:04,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:59:04,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-06 20:59:04,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 172. [2023-11-06 20:59:04,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.473684210526316) internal successors, (423), 171 states have internal predecessors, (423), 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) [2023-11-06 20:59:04,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 423 transitions. [2023-11-06 20:59:04,487 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 423 transitions. Word has length 9 [2023-11-06 20:59:04,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:59:04,488 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 423 transitions. [2023-11-06 20:59:04,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:59:04,488 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 423 transitions. [2023-11-06 20:59:04,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 20:59:04,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:04,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:59:04,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 20:59:04,491 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:59:04,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:04,491 INFO L85 PathProgramCache]: Analyzing trace with hash 713563825, now seen corresponding path program 1 times [2023-11-06 20:59:04,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:04,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602997377] [2023-11-06 20:59:04,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:04,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:59:04,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:04,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602997377] [2023-11-06 20:59:04,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602997377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:59:04,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:59:04,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:59:04,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980168227] [2023-11-06 20:59:04,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:59:04,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:59:04,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:59:04,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:59:04,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:59:04,704 INFO L87 Difference]: Start difference. First operand 172 states and 423 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-06 20:59:04,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:59:04,773 INFO L93 Difference]: Finished difference Result 206 states and 492 transitions. [2023-11-06 20:59:04,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:59:04,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2023-11-06 20:59:04,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:59:04,776 INFO L225 Difference]: With dead ends: 206 [2023-11-06 20:59:04,776 INFO L226 Difference]: Without dead ends: 206 [2023-11-06 20:59:04,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:59:04,777 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:59:04,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 5 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:59:04,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-06 20:59:04,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 170. [2023-11-06 20:59:04,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.4615384615384617) internal successors, (416), 169 states have internal predecessors, (416), 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) [2023-11-06 20:59:04,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 416 transitions. [2023-11-06 20:59:04,787 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 416 transitions. Word has length 10 [2023-11-06 20:59:04,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:59:04,787 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 416 transitions. [2023-11-06 20:59:04,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-06 20:59:04,787 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 416 transitions. [2023-11-06 20:59:04,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 20:59:04,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:04,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:59:04,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 20:59:04,789 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:59:04,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:04,790 INFO L85 PathProgramCache]: Analyzing trace with hash 646517218, now seen corresponding path program 1 times [2023-11-06 20:59:04,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:04,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051107373] [2023-11-06 20:59:04,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:04,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:59:04,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:04,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051107373] [2023-11-06 20:59:04,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051107373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:59:04,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:59:04,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:59:04,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481966155] [2023-11-06 20:59:04,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:59:04,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:59:04,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:59:04,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:59:04,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:59:04,900 INFO L87 Difference]: Start difference. First operand 170 states and 416 transitions. Second operand has 4 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) [2023-11-06 20:59:04,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:59:04,963 INFO L93 Difference]: Finished difference Result 196 states and 436 transitions. [2023-11-06 20:59:04,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:59:04,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 [2023-11-06 20:59:04,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:59:04,965 INFO L225 Difference]: With dead ends: 196 [2023-11-06 20:59:04,965 INFO L226 Difference]: Without dead ends: 142 [2023-11-06 20:59:04,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:59:04,967 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:59:04,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 10 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:59:04,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-06 20:59:04,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2023-11-06 20:59:04,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 2.2056737588652484) internal successors, (311), 141 states have internal predecessors, (311), 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) [2023-11-06 20:59:04,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 311 transitions. [2023-11-06 20:59:04,975 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 311 transitions. Word has length 11 [2023-11-06 20:59:04,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:59:04,975 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 311 transitions. [2023-11-06 20:59:04,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2023-11-06 20:59:04,976 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 311 transitions. [2023-11-06 20:59:04,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 20:59:04,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:04,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:59:04,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 20:59:04,985 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:59:04,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:04,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1420845347, now seen corresponding path program 1 times [2023-11-06 20:59:04,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:04,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812238932] [2023-11-06 20:59:04,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:04,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:59:05,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:05,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812238932] [2023-11-06 20:59:05,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812238932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:59:05,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:59:05,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:59:05,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361698194] [2023-11-06 20:59:05,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:59:05,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:59:05,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:59:05,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:59:05,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:59:05,161 INFO L87 Difference]: Start difference. First operand 142 states and 311 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2023-11-06 20:59:05,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:59:05,242 INFO L93 Difference]: Finished difference Result 139 states and 282 transitions. [2023-11-06 20:59:05,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 20:59:05,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 [2023-11-06 20:59:05,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:59:05,245 INFO L225 Difference]: With dead ends: 139 [2023-11-06 20:59:05,245 INFO L226 Difference]: Without dead ends: 103 [2023-11-06 20:59:05,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:59:05,247 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:59:05,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 12 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:59:05,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-06 20:59:05,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2023-11-06 20:59:05,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.98) internal successors, (198), 100 states have internal predecessors, (198), 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) [2023-11-06 20:59:05,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 198 transitions. [2023-11-06 20:59:05,253 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 198 transitions. Word has length 12 [2023-11-06 20:59:05,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:59:05,254 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 198 transitions. [2023-11-06 20:59:05,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2023-11-06 20:59:05,254 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 198 transitions. [2023-11-06 20:59:05,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 20:59:05,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:05,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:59:05,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 20:59:05,255 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:59:05,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:05,256 INFO L85 PathProgramCache]: Analyzing trace with hash 748170212, now seen corresponding path program 1 times [2023-11-06 20:59:05,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:05,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374068920] [2023-11-06 20:59:05,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:05,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:05,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:59:05,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:05,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374068920] [2023-11-06 20:59:05,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374068920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:59:05,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:59:05,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:59:05,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429505554] [2023-11-06 20:59:05,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:59:05,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:59:05,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:59:05,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:59:05,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:59:05,410 INFO L87 Difference]: Start difference. First operand 101 states and 198 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:59:05,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:59:05,466 INFO L93 Difference]: Finished difference Result 139 states and 255 transitions. [2023-11-06 20:59:05,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:59:05,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-06 20:59:05,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:59:05,468 INFO L225 Difference]: With dead ends: 139 [2023-11-06 20:59:05,468 INFO L226 Difference]: Without dead ends: 92 [2023-11-06 20:59:05,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:59:05,470 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 31 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:59:05,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 6 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:59:05,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-06 20:59:05,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2023-11-06 20:59:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.9204545454545454) internal successors, (169), 88 states have internal predecessors, (169), 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) [2023-11-06 20:59:05,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 169 transitions. [2023-11-06 20:59:05,475 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 169 transitions. Word has length 13 [2023-11-06 20:59:05,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:59:05,475 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 169 transitions. [2023-11-06 20:59:05,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:59:05,476 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 169 transitions. [2023-11-06 20:59:05,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 20:59:05,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:05,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:59:05,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 20:59:05,477 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:59:05,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:05,478 INFO L85 PathProgramCache]: Analyzing trace with hash 344819225, now seen corresponding path program 1 times [2023-11-06 20:59:05,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:05,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285086476] [2023-11-06 20:59:05,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:05,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:59:05,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:05,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285086476] [2023-11-06 20:59:05,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285086476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:59:05,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:59:05,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:59:05,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146183266] [2023-11-06 20:59:05,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:59:05,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:59:05,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:59:05,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:59:05,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:59:05,584 INFO L87 Difference]: Start difference. First operand 89 states and 169 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-06 20:59:05,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:59:05,647 INFO L93 Difference]: Finished difference Result 112 states and 200 transitions. [2023-11-06 20:59:05,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:59:05,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2023-11-06 20:59:05,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:59:05,649 INFO L225 Difference]: With dead ends: 112 [2023-11-06 20:59:05,649 INFO L226 Difference]: Without dead ends: 64 [2023-11-06 20:59:05,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:59:05,650 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:59:05,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 6 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:59:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-06 20:59:05,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2023-11-06 20:59:05,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.7096774193548387) internal successors, (106), 62 states have internal predecessors, (106), 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) [2023-11-06 20:59:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 106 transitions. [2023-11-06 20:59:05,654 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 106 transitions. Word has length 14 [2023-11-06 20:59:05,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:59:05,655 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 106 transitions. [2023-11-06 20:59:05,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-06 20:59:05,655 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 106 transitions. [2023-11-06 20:59:05,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 20:59:05,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:05,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:59:05,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 20:59:05,656 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 20:59:05,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:05,657 INFO L85 PathProgramCache]: Analyzing trace with hash -532644889, now seen corresponding path program 1 times [2023-11-06 20:59:05,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:05,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913867907] [2023-11-06 20:59:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:05,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:59:05,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:05,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913867907] [2023-11-06 20:59:05,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913867907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:59:05,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:59:05,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:59:05,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188399083] [2023-11-06 20:59:05,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:59:05,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 20:59:05,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:59:05,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 20:59:05,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:59:05,766 INFO L87 Difference]: Start difference. First operand 63 states and 106 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2023-11-06 20:59:05,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:59:05,834 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2023-11-06 20:59:05,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 20:59:05,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2023-11-06 20:59:05,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:59:05,835 INFO L225 Difference]: With dead ends: 58 [2023-11-06 20:59:05,835 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 20:59:05,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-06 20:59:05,836 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:59:05,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 5 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:59:05,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 20:59:05,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 20:59:05,838 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) [2023-11-06 20:59:05,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 20:59:05,838 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2023-11-06 20:59:05,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:59:05,839 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 20:59:05,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2023-11-06 20:59:05,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 20:59:05,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 20:59:05,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-06 20:59:05,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-06 20:59:05,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-06 20:59:05,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-06 20:59:05,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 20:59:05,848 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:59:05,851 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 20:59:05,851 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 20:59:05,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 08:59:05 BasicIcfg [2023-11-06 20:59:05,855 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 20:59:05,855 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 20:59:05,855 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 20:59:05,856 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 20:59:05,856 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:58:59" (3/4) ... [2023-11-06 20:59:05,859 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 20:59:05,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-06 20:59:05,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-06 20:59:05,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-06 20:59:05,871 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-06 20:59:05,871 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 20:59:05,871 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 20:59:05,872 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 20:59:05,921 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp/witness.graphml.graphml [2023-11-06 20:59:05,921 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp/witness.graphml.yaml [2023-11-06 20:59:05,921 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 20:59:05,922 INFO L158 Benchmark]: Toolchain (without parser) took 7566.27ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 99.4MB in the beginning and 51.9MB in the end (delta: 47.5MB). Peak memory consumption was 78.7MB. Max. memory is 16.1GB. [2023-11-06 20:59:05,922 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory was 85.2MB in the beginning and 85.2MB in the end (delta: 84.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:59:05,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 609.64ms. Allocated memory is still 144.7MB. Free memory was 99.2MB in the beginning and 78.8MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 20:59:05,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.61ms. Allocated memory is still 144.7MB. Free memory was 78.8MB in the beginning and 76.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:59:05,924 INFO L158 Benchmark]: Boogie Preprocessor took 72.34ms. Allocated memory is still 144.7MB. Free memory was 76.7MB in the beginning and 75.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:59:05,924 INFO L158 Benchmark]: RCFGBuilder took 580.54ms. Allocated memory is still 144.7MB. Free memory was 75.4MB in the beginning and 110.5MB in the end (delta: -35.1MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2023-11-06 20:59:05,924 INFO L158 Benchmark]: TraceAbstraction took 6150.73ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 109.8MB in the beginning and 56.1MB in the end (delta: 53.7MB). Peak memory consumption was 81.5MB. Max. memory is 16.1GB. [2023-11-06 20:59:05,925 INFO L158 Benchmark]: Witness Printer took 66.19ms. Allocated memory is still 174.1MB. Free memory was 56.1MB in the beginning and 51.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 20:59:05,927 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory was 85.2MB in the beginning and 85.2MB in the end (delta: 84.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 609.64ms. Allocated memory is still 144.7MB. Free memory was 99.2MB in the beginning and 78.8MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.61ms. Allocated memory is still 144.7MB. Free memory was 78.8MB in the beginning and 76.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.34ms. Allocated memory is still 144.7MB. Free memory was 76.7MB in the beginning and 75.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 580.54ms. Allocated memory is still 144.7MB. Free memory was 75.4MB in the beginning and 110.5MB in the end (delta: -35.1MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * TraceAbstraction took 6150.73ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 109.8MB in the beginning and 56.1MB in the end (delta: 53.7MB). Peak memory consumption was 81.5MB. Max. memory is 16.1GB. * Witness Printer took 66.19ms. Allocated memory is still 174.1MB. Free memory was 56.1MB in the beginning and 51.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 93 PlacesBefore, 30 PlacesAfterwards, 85 TransitionsBefore, 21 TransitionsAfterwards, 1518 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 77 TotalNumberOfCompositions, 2781 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1552, independent: 1453, independent conditional: 0, independent unconditional: 1453, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1005, independent: 966, independent conditional: 0, independent unconditional: 966, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1005, independent: 953, independent conditional: 0, independent unconditional: 953, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, independent: 13, independent conditional: 0, independent unconditional: 13, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 215, independent: 43, independent conditional: 0, independent unconditional: 43, dependent: 172, dependent conditional: 0, dependent unconditional: 172, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1552, independent: 487, independent conditional: 0, independent unconditional: 487, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 1005, unknown conditional: 0, unknown unconditional: 1005] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, 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: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 6.0s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 147 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 59 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 429 IncrementalHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 27 mSDtfsCounter, 429 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209occurred in iteration=1, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 150 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 415 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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! [2023-11-06 20:59:05,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b68674-69d4-40f5-91f1-7ac56c4009e9/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE