./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.05.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.05.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --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 d8722862ca37b1ee13dec8b9e420cd40ba7901837b8f3b6258499da6e8a2ca6f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:37:32,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:37:32,921 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:37:32,929 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:37:32,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:37:32,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:37:32,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:37:32,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:37:32,969 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:37:32,970 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:37:32,970 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:37:32,971 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:37:32,971 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:37:32,972 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:37:32,972 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:37:32,972 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:37:32,973 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:37:32,973 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:37:32,974 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:37:32,974 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:37:32,978 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:37:32,979 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:37:32,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:37:32,980 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:37:32,980 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:37:32,981 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:37:32,981 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:37:32,981 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:37:32,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:37:32,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:37:32,982 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:37:32,986 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:37:32,987 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:37:32,987 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:37:32,987 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:37:32,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:37:32,988 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:37:32,988 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:37:32,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:32,989 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:37:32,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:37:32,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:37:32,990 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:37:32,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:37:32,991 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:37:32,991 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:37:32,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:37:32,991 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_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8722862ca37b1ee13dec8b9e420cd40ba7901837b8f3b6258499da6e8a2ca6f [2024-11-02 12:37:33,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:37:33,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:37:33,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:37:33,318 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:37:33,318 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:37:33,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/systemc/transmitter.05.cil.c Unable to find full path for "g++" [2024-11-02 12:37:35,476 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:37:35,749 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:37:35,750 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/sv-benchmarks/c/systemc/transmitter.05.cil.c [2024-11-02 12:37:35,770 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/bin/utaipan-verify-DbMuA5NWw2/data/78e7588b3/061babd518684c6a8bf47a9c3832d6b7/FLAG0910502e6 [2024-11-02 12:37:35,790 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/bin/utaipan-verify-DbMuA5NWw2/data/78e7588b3/061babd518684c6a8bf47a9c3832d6b7 [2024-11-02 12:37:35,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:37:35,793 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:37:35,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:35,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:37:35,804 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:37:35,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:35" (1/1) ... [2024-11-02 12:37:35,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a6aebfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:35, skipping insertion in model container [2024-11-02 12:37:35,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:35" (1/1) ... [2024-11-02 12:37:35,856 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:37:36,047 WARN L251 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_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/sv-benchmarks/c/systemc/transmitter.05.cil.c[706,719] [2024-11-02 12:37:36,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:36,147 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:37:36,163 WARN L251 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_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/sv-benchmarks/c/systemc/transmitter.05.cil.c[706,719] [2024-11-02 12:37:36,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:36,227 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:37:36,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:36 WrapperNode [2024-11-02 12:37:36,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:36,228 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:36,228 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:37:36,229 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:37:36,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:36" (1/1) ... [2024-11-02 12:37:36,244 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:36" (1/1) ... [2024-11-02 12:37:36,275 INFO L138 Inliner]: procedures = 38, calls = 45, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 446 [2024-11-02 12:37:36,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:36,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:37:36,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:37:36,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:37:36,284 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:36" (1/1) ... [2024-11-02 12:37:36,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:36" (1/1) ... [2024-11-02 12:37:36,288 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:36" (1/1) ... [2024-11-02 12:37:36,288 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:36" (1/1) ... [2024-11-02 12:37:36,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:36" (1/1) ... [2024-11-02 12:37:36,304 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:36" (1/1) ... [2024-11-02 12:37:36,307 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:36" (1/1) ... [2024-11-02 12:37:36,309 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:36" (1/1) ... [2024-11-02 12:37:36,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:37:36,314 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:37:36,314 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:37:36,314 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:37:36,315 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:36" (1/1) ... [2024-11-02 12:37:36,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:36,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:37:36,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:37:36,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_084d0015-c3fa-4f5f-8fdb-077b3018e0ca/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:37:36,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:37:36,410 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-02 12:37:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-02 12:37:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-02 12:37:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-02 12:37:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-02 12:37:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-02 12:37:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-02 12:37:36,413 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-02 12:37:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-02 12:37:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-02 12:37:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:37:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-02 12:37:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-02 12:37:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:37:36,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:37:36,501 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:37:36,503 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:37:37,127 INFO L? ?]: Removed 55 outVars from TransFormulas that were not future-live. [2024-11-02 12:37:37,127 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:37:37,459 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:37:37,461 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-02 12:37:37,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:37 BoogieIcfgContainer [2024-11-02 12:37:37,463 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:37:37,465 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:37:37,467 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:37:37,471 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:37:37,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:37:35" (1/3) ... [2024-11-02 12:37:37,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6b753f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:37, skipping insertion in model container [2024-11-02 12:37:37,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:36" (2/3) ... [2024-11-02 12:37:37,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6b753f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:37, skipping insertion in model container [2024-11-02 12:37:37,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:37" (3/3) ... [2024-11-02 12:37:37,476 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.05.cil.c [2024-11-02 12:37:37,496 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:37:37,497 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:37:37,575 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:37:37,581 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@cc60b4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:37:37,581 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:37:37,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 89 states have (on average 1.4943820224719102) internal successors, (133), 91 states have internal predecessors, (133), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-02 12:37:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-02 12:37:37,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:37,595 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:37,595 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:37,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1296061986, now seen corresponding path program 1 times [2024-11-02 12:37:37,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:37,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064097065] [2024-11-02 12:37:37,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:37,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:38,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:37:38,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064097065] [2024-11-02 12:37:38,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064097065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:38,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:38,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:37:38,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656327463] [2024-11-02 12:37:38,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:38,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:37:38,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:37:38,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:37:38,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:37:38,159 INFO L87 Difference]: Start difference. First operand has 115 states, 89 states have (on average 1.4943820224719102) internal successors, (133), 91 states have internal predecessors, (133), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:37:38,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:38,637 INFO L93 Difference]: Finished difference Result 332 states and 495 transitions. [2024-11-02 12:37:38,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:37:38,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2024-11-02 12:37:38,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:38,653 INFO L225 Difference]: With dead ends: 332 [2024-11-02 12:37:38,653 INFO L226 Difference]: Without dead ends: 218 [2024-11-02 12:37:38,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:37:38,665 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 288 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:38,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 434 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:37:38,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-02 12:37:38,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2024-11-02 12:37:38,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 169 states have (on average 1.4260355029585798) internal successors, (241), 171 states have internal predecessors, (241), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-02 12:37:38,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 305 transitions. [2024-11-02 12:37:38,802 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 305 transitions. Word has length 49 [2024-11-02 12:37:38,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:38,803 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 305 transitions. [2024-11-02 12:37:38,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:37:38,807 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 305 transitions. [2024-11-02 12:37:38,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-02 12:37:38,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:38,810 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:38,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:37:38,811 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:38,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:38,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2041976927, now seen corresponding path program 1 times [2024-11-02 12:37:38,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:38,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483221290] [2024-11-02 12:37:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:38,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:39,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:37:39,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483221290] [2024-11-02 12:37:39,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483221290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:39,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:39,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:37:39,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001747769] [2024-11-02 12:37:39,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:39,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:37:39,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:37:39,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:37:39,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:37:39,138 INFO L87 Difference]: Start difference. First operand 214 states and 305 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:37:39,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:39,934 INFO L93 Difference]: Finished difference Result 1225 states and 1825 transitions. [2024-11-02 12:37:39,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:37:39,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2024-11-02 12:37:39,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:39,952 INFO L225 Difference]: With dead ends: 1225 [2024-11-02 12:37:39,953 INFO L226 Difference]: Without dead ends: 1016 [2024-11-02 12:37:39,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:37:39,961 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 689 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:39,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 547 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:37:39,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2024-11-02 12:37:40,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 980. [2024-11-02 12:37:40,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 787 states have (on average 1.4142312579415501) internal successors, (1113), 795 states have internal predecessors, (1113), 132 states have call successors, (132), 60 states have call predecessors, (132), 60 states have return successors, (190), 125 states have call predecessors, (190), 132 states have call successors, (190) [2024-11-02 12:37:40,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1435 transitions. [2024-11-02 12:37:40,089 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1435 transitions. Word has length 49 [2024-11-02 12:37:40,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:40,090 INFO L471 AbstractCegarLoop]: Abstraction has 980 states and 1435 transitions. [2024-11-02 12:37:40,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:37:40,090 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1435 transitions. [2024-11-02 12:37:40,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-02 12:37:40,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:40,095 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:40,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:37:40,097 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:40,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash 465419168, now seen corresponding path program 1 times [2024-11-02 12:37:40,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:40,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374447175] [2024-11-02 12:37:40,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:40,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:40,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:37:40,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374447175] [2024-11-02 12:37:40,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374447175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:40,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:40,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:37:40,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970991906] [2024-11-02 12:37:40,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:40,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:37:40,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:37:40,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:37:40,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:37:40,241 INFO L87 Difference]: Start difference. First operand 980 states and 1435 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:37:40,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:40,967 INFO L93 Difference]: Finished difference Result 3843 states and 5771 transitions. [2024-11-02 12:37:40,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:37:40,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2024-11-02 12:37:40,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:40,998 INFO L225 Difference]: With dead ends: 3843 [2024-11-02 12:37:40,998 INFO L226 Difference]: Without dead ends: 2868 [2024-11-02 12:37:41,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:37:41,005 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 686 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:41,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 549 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:37:41,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2024-11-02 12:37:41,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2630. [2024-11-02 12:37:41,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2630 states, 2155 states have (on average 1.4241299303944315) internal successors, (3069), 2153 states have internal predecessors, (3069), 310 states have call successors, (310), 148 states have call predecessors, (310), 164 states have return successors, (552), 329 states have call predecessors, (552), 310 states have call successors, (552) [2024-11-02 12:37:41,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 3931 transitions. [2024-11-02 12:37:41,271 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 3931 transitions. Word has length 49 [2024-11-02 12:37:41,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:41,272 INFO L471 AbstractCegarLoop]: Abstraction has 2630 states and 3931 transitions. [2024-11-02 12:37:41,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:37:41,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 3931 transitions. [2024-11-02 12:37:41,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-02 12:37:41,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:41,274 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:41,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:37:41,274 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:41,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:41,276 INFO L85 PathProgramCache]: Analyzing trace with hash 408274943, now seen corresponding path program 1 times [2024-11-02 12:37:41,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:41,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823443061] [2024-11-02 12:37:41,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:41,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:41,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:37:41,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823443061] [2024-11-02 12:37:41,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823443061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:41,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:41,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:37:41,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816968516] [2024-11-02 12:37:41,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:41,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:37:41,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:37:41,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:37:41,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:37:41,405 INFO L87 Difference]: Start difference. First operand 2630 states and 3931 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:37:42,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:42,486 INFO L93 Difference]: Finished difference Result 9697 states and 15016 transitions. [2024-11-02 12:37:42,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:37:42,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2024-11-02 12:37:42,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:42,537 INFO L225 Difference]: With dead ends: 9697 [2024-11-02 12:37:42,538 INFO L226 Difference]: Without dead ends: 7072 [2024-11-02 12:37:42,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:37:42,552 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 658 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:42,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 595 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:37:42,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7072 states. [2024-11-02 12:37:43,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7072 to 6510. [2024-11-02 12:37:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6510 states, 5363 states have (on average 1.4243893343278016) internal successors, (7639), 5303 states have internal predecessors, (7639), 726 states have call successors, (726), 348 states have call predecessors, (726), 420 states have return successors, (1596), 859 states have call predecessors, (1596), 726 states have call successors, (1596) [2024-11-02 12:37:43,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6510 states to 6510 states and 9961 transitions. [2024-11-02 12:37:43,122 INFO L78 Accepts]: Start accepts. Automaton has 6510 states and 9961 transitions. Word has length 49 [2024-11-02 12:37:43,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:43,124 INFO L471 AbstractCegarLoop]: Abstraction has 6510 states and 9961 transitions. [2024-11-02 12:37:43,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:37:43,125 INFO L276 IsEmpty]: Start isEmpty. Operand 6510 states and 9961 transitions. [2024-11-02 12:37:43,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-02 12:37:43,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:43,129 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:43,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:37:43,130 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:43,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:43,130 INFO L85 PathProgramCache]: Analyzing trace with hash 862692144, now seen corresponding path program 1 times [2024-11-02 12:37:43,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:43,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243270870] [2024-11-02 12:37:43,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:43,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:43,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:43,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:37:43,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243270870] [2024-11-02 12:37:43,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243270870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:43,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:43,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:37:43,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169291983] [2024-11-02 12:37:43,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:43,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:37:43,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:37:43,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:37:43,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:37:43,401 INFO L87 Difference]: Start difference. First operand 6510 states and 9961 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:37:44,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:44,518 INFO L93 Difference]: Finished difference Result 17577 states and 26992 transitions. [2024-11-02 12:37:44,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:37:44,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2024-11-02 12:37:44,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:44,596 INFO L225 Difference]: With dead ends: 17577 [2024-11-02 12:37:44,597 INFO L226 Difference]: Without dead ends: 11073 [2024-11-02 12:37:44,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-02 12:37:44,623 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 438 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:44,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 355 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:37:44,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11073 states. [2024-11-02 12:37:45,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11073 to 10350. [2024-11-02 12:37:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10350 states, 8550 states have (on average 1.4085380116959065) internal successors, (12043), 8475 states have internal predecessors, (12043), 1087 states have call successors, (1087), 568 states have call predecessors, (1087), 712 states have return successors, (2392), 1307 states have call predecessors, (2392), 1087 states have call successors, (2392) [2024-11-02 12:37:45,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10350 states to 10350 states and 15522 transitions. [2024-11-02 12:37:45,492 INFO L78 Accepts]: Start accepts. Automaton has 10350 states and 15522 transitions. Word has length 53 [2024-11-02 12:37:45,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:45,493 INFO L471 AbstractCegarLoop]: Abstraction has 10350 states and 15522 transitions. [2024-11-02 12:37:45,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:37:45,494 INFO L276 IsEmpty]: Start isEmpty. Operand 10350 states and 15522 transitions. [2024-11-02 12:37:45,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-02 12:37:45,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:45,497 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:45,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:37:45,497 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:45,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:45,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1643382018, now seen corresponding path program 1 times [2024-11-02 12:37:45,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:45,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441676413] [2024-11-02 12:37:45,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:45,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:45,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:37:45,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441676413] [2024-11-02 12:37:45,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441676413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:45,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:45,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:37:45,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695724115] [2024-11-02 12:37:45,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:45,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:37:45,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:37:45,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:37:45,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:37:45,822 INFO L87 Difference]: Start difference. First operand 10350 states and 15522 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:37:47,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:47,378 INFO L93 Difference]: Finished difference Result 27476 states and 41747 transitions. [2024-11-02 12:37:47,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:37:47,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2024-11-02 12:37:47,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:47,491 INFO L225 Difference]: With dead ends: 27476 [2024-11-02 12:37:47,491 INFO L226 Difference]: Without dead ends: 17132 [2024-11-02 12:37:47,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-02 12:37:47,528 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 390 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:47,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 463 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:37:47,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17132 states. [2024-11-02 12:37:49,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17132 to 16234. [2024-11-02 12:37:49,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16234 states, 13419 states have (on average 1.3998062448766675) internal successors, (18784), 13344 states have internal predecessors, (18784), 1708 states have call successors, (1708), 922 states have call predecessors, (1708), 1106 states have return successors, (3787), 1968 states have call predecessors, (3787), 1708 states have call successors, (3787) [2024-11-02 12:37:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16234 states to 16234 states and 24279 transitions. [2024-11-02 12:37:49,170 INFO L78 Accepts]: Start accepts. Automaton has 16234 states and 24279 transitions. Word has length 55 [2024-11-02 12:37:49,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:49,171 INFO L471 AbstractCegarLoop]: Abstraction has 16234 states and 24279 transitions. [2024-11-02 12:37:49,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:37:49,172 INFO L276 IsEmpty]: Start isEmpty. Operand 16234 states and 24279 transitions. [2024-11-02 12:37:49,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-02 12:37:49,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:49,174 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:49,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:37:49,176 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:49,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:49,177 INFO L85 PathProgramCache]: Analyzing trace with hash -857999897, now seen corresponding path program 1 times [2024-11-02 12:37:49,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:49,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213824037] [2024-11-02 12:37:49,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:49,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:49,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:49,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:37:49,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213824037] [2024-11-02 12:37:49,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213824037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:49,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:49,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:37:49,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186883598] [2024-11-02 12:37:49,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:49,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:37:49,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:37:49,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:37:49,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:37:49,406 INFO L87 Difference]: Start difference. First operand 16234 states and 24279 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:37:51,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:51,370 INFO L93 Difference]: Finished difference Result 43279 states and 65611 transitions. [2024-11-02 12:37:51,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:37:51,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2024-11-02 12:37:51,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:51,516 INFO L225 Difference]: With dead ends: 43279 [2024-11-02 12:37:51,516 INFO L226 Difference]: Without dead ends: 27051 [2024-11-02 12:37:51,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-02 12:37:51,563 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 407 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:51,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 349 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:37:51,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27051 states. [2024-11-02 12:37:54,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27051 to 25925. [2024-11-02 12:37:54,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25925 states, 21432 states have (on average 1.3879712579320642) internal successors, (29747), 21365 states have internal predecessors, (29747), 2734 states have call successors, (2734), 1526 states have call predecessors, (2734), 1758 states have return successors, (6106), 3034 states have call predecessors, (6106), 2734 states have call successors, (6106) [2024-11-02 12:37:54,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25925 states to 25925 states and 38587 transitions. [2024-11-02 12:37:54,579 INFO L78 Accepts]: Start accepts. Automaton has 25925 states and 38587 transitions. Word has length 57 [2024-11-02 12:37:54,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:54,580 INFO L471 AbstractCegarLoop]: Abstraction has 25925 states and 38587 transitions. [2024-11-02 12:37:54,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:37:54,580 INFO L276 IsEmpty]: Start isEmpty. Operand 25925 states and 38587 transitions. [2024-11-02 12:37:54,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-02 12:37:54,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:54,582 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:54,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:37:54,583 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:54,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:54,583 INFO L85 PathProgramCache]: Analyzing trace with hash 807579266, now seen corresponding path program 1 times [2024-11-02 12:37:54,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:54,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466851882] [2024-11-02 12:37:54,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:54,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:55,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:37:55,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466851882] [2024-11-02 12:37:55,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466851882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:55,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:55,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:37:55,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887275484] [2024-11-02 12:37:55,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:55,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:37:55,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:37:55,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:37:55,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:37:55,013 INFO L87 Difference]: Start difference. First operand 25925 states and 38587 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:37:59,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:59,086 INFO L93 Difference]: Finished difference Result 78828 states and 119189 transitions. [2024-11-02 12:37:59,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:37:59,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-11-02 12:37:59,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:59,569 INFO L225 Difference]: With dead ends: 78828 [2024-11-02 12:37:59,570 INFO L226 Difference]: Without dead ends: 52909 [2024-11-02 12:37:59,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-02 12:37:59,644 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 406 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:59,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 331 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:37:59,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52909 states.