./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.13.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_f5250d03-0bf2-409e-a67f-0553939f8767/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5250d03-0bf2-409e-a67f-0553939f8767/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_f5250d03-0bf2-409e-a67f-0553939f8767/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5250d03-0bf2-409e-a67f-0553939f8767/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.13.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5250d03-0bf2-409e-a67f-0553939f8767/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_f5250d03-0bf2-409e-a67f-0553939f8767/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 5975f0f3825b3a6653676f33bd69d14e1e58fcf0306bfb5508ab91dc8951d6c4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:21:37,445 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:21:37,569 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5250d03-0bf2-409e-a67f-0553939f8767/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 11:21:37,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:21:37,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:21:37,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:21:37,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:21:37,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:21:37,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:21:37,614 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:21:37,616 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:21:37,616 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:21:37,616 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:21:37,617 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:21:37,617 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:21:37,618 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:21:37,621 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:21:37,621 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:21:37,622 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:21:37,622 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:21:37,622 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:21:37,623 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:21:37,624 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:21:37,624 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 11:21:37,624 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 11:21:37,625 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:21:37,625 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 11:21:37,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:21:37,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 11:21:37,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:21:37,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 11:21:37,627 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:21:37,627 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 11:21:37,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 11:21:37,628 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:21:37,628 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:21:37,628 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:21:37,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:21:37,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:21:37,629 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:21:37,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:21:37,630 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 11:21:37,631 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:21:37,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:21:37,631 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:21:37,632 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:21:37,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:21:37,633 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_f5250d03-0bf2-409e-a67f-0553939f8767/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5250d03-0bf2-409e-a67f-0553939f8767/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5975f0f3825b3a6653676f33bd69d14e1e58fcf0306bfb5508ab91dc8951d6c4 [2024-11-02 11:21:37,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:21:37,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:21:37,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:21:37,965 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:21:37,965 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:21:37,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5250d03-0bf2-409e-a67f-0553939f8767/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/systemc/transmitter.13.cil.c Unable to find full path for "g++" [2024-11-02 11:21:39,934 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:21:40,195 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:21:40,195 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5250d03-0bf2-409e-a67f-0553939f8767/sv-benchmarks/c/systemc/transmitter.13.cil.c [2024-11-02 11:21:40,220 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5250d03-0bf2-409e-a67f-0553939f8767/bin/utaipan-verify-DbMuA5NWw2/data/aa23c48a5/c11f9b758cae4a4b8ca84584392327ce/FLAGba8d3ea98 [2024-11-02 11:21:40,239 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5250d03-0bf2-409e-a67f-0553939f8767/bin/utaipan-verify-DbMuA5NWw2/data/aa23c48a5/c11f9b758cae4a4b8ca84584392327ce [2024-11-02 11:21:40,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:21:40,243 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:21:40,247 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:21:40,247 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:21:40,254 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:21:40,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:21:40" (1/1) ... [2024-11-02 11:21:40,259 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549a0d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:40, skipping insertion in model container [2024-11-02 11:21:40,259 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:21:40" (1/1) ... [2024-11-02 11:21:40,325 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:21:40,568 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_f5250d03-0bf2-409e-a67f-0553939f8767/sv-benchmarks/c/systemc/transmitter.13.cil.c[706,719] [2024-11-02 11:21:40,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:21:40,792 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:21:40,808 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_f5250d03-0bf2-409e-a67f-0553939f8767/sv-benchmarks/c/systemc/transmitter.13.cil.c[706,719] [2024-11-02 11:21:40,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:21:40,964 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:21:40,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:40 WrapperNode [2024-11-02 11:21:40,964 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:21:40,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:21:40,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:21:40,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:21:40,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:40" (1/1) ... [2024-11-02 11:21:40,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:40" (1/1) ... [2024-11-02 11:21:41,054 INFO L138 Inliner]: procedures = 54, calls = 69, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 918 [2024-11-02 11:21:41,055 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:21:41,055 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:21:41,056 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:21:41,056 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:21:41,069 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:40" (1/1) ... [2024-11-02 11:21:41,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:40" (1/1) ... [2024-11-02 11:21:41,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:40" (1/1) ... [2024-11-02 11:21:41,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:40" (1/1) ... [2024-11-02 11:21:41,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:40" (1/1) ... [2024-11-02 11:21:41,100 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:40" (1/1) ... [2024-11-02 11:21:41,103 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:40" (1/1) ... [2024-11-02 11:21:41,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:40" (1/1) ... [2024-11-02 11:21:41,112 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:21:41,113 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:21:41,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:21:41,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:21:41,114 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:40" (1/1) ... [2024-11-02 11:21:41,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:21:41,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5250d03-0bf2-409e-a67f-0553939f8767/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:21:41,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5250d03-0bf2-409e-a67f-0553939f8767/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:21:41,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5250d03-0bf2-409e-a67f-0553939f8767/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:21:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:21:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-02 11:21:41,199 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-02 11:21:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-02 11:21:41,199 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-02 11:21:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-02 11:21:41,200 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-02 11:21:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-02 11:21:41,200 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-02 11:21:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-02 11:21:41,200 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-02 11:21:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-02 11:21:41,201 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-02 11:21:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 11:21:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:21:41,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:21:41,378 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:21:41,381 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:21:42,787 INFO L? ?]: Removed 103 outVars from TransFormulas that were not future-live. [2024-11-02 11:21:42,787 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:21:43,513 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:21:43,515 INFO L316 CfgBuilder]: Removed 17 assume(true) statements. [2024-11-02 11:21:43,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:21:43 BoogieIcfgContainer [2024-11-02 11:21:43,516 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:21:43,518 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:21:43,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:21:43,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:21:43,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:21:40" (1/3) ... [2024-11-02 11:21:43,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb7a3af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:21:43, skipping insertion in model container [2024-11-02 11:21:43,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:40" (2/3) ... [2024-11-02 11:21:43,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb7a3af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:21:43, skipping insertion in model container [2024-11-02 11:21:43,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:21:43" (3/3) ... [2024-11-02 11:21:43,528 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.13.cil.c [2024-11-02 11:21:43,550 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:21:43,551 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 11:21:43,640 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:21:43,646 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;@5e523123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:21:43,647 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 11:21:43,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 177 states have (on average 1.5197740112994351) internal successors, (269), 179 states have internal predecessors, (269), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-02 11:21:43,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-02 11:21:43,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:21:43,666 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, 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 11:21:43,667 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:21:43,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:21:43,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1257720567, now seen corresponding path program 1 times [2024-11-02 11:21:43,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:21:43,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440500505] [2024-11-02 11:21:43,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:21:43,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:21:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:21:44,388 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 11:21:44,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:21:44,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440500505] [2024-11-02 11:21:44,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440500505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:21:44,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:21:44,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 11:21:44,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456597835] [2024-11-02 11:21:44,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:21:44,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:21:44,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:21:44,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:21:44,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:21:44,421 INFO L87 Difference]: Start difference. First operand has 211 states, 177 states have (on average 1.5197740112994351) internal successors, (269), 179 states have internal predecessors, (269), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 11:21:45,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:21:45,040 INFO L93 Difference]: Finished difference Result 616 states and 967 transitions. [2024-11-02 11:21:45,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:21:45,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 81 [2024-11-02 11:21:45,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:21:45,060 INFO L225 Difference]: With dead ends: 616 [2024-11-02 11:21:45,061 INFO L226 Difference]: Without dead ends: 406 [2024-11-02 11:21:45,067 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 11:21:45,071 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 560 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 11:21:45,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 910 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 11:21:45,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-02 11:21:45,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 403. [2024-11-02 11:21:45,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 343 states have (on average 1.4810495626822158) internal successors, (508), 344 states have internal predecessors, (508), 47 states have call successors, (47), 12 states have call predecessors, (47), 12 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-02 11:21:45,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 602 transitions. [2024-11-02 11:21:45,161 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 602 transitions. Word has length 81 [2024-11-02 11:21:45,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:21:45,161 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 602 transitions. [2024-11-02 11:21:45,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 11:21:45,162 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 602 transitions. [2024-11-02 11:21:45,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-02 11:21:45,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:21:45,166 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, 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 11:21:45,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 11:21:45,167 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:21:45,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:21:45,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1081925514, now seen corresponding path program 1 times [2024-11-02 11:21:45,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:21:45,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048847302] [2024-11-02 11:21:45,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:21:45,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:21:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:21:45,428 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 11:21:45,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:21:45,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048847302] [2024-11-02 11:21:45,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048847302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:21:45,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:21:45,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 11:21:45,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818412678] [2024-11-02 11:21:45,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:21:45,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 11:21:45,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:21:45,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 11:21:45,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:21:45,435 INFO L87 Difference]: Start difference. First operand 403 states and 602 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 11:21:46,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:21:46,443 INFO L93 Difference]: Finished difference Result 1385 states and 2093 transitions. [2024-11-02 11:21:46,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 11:21:46,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-11-02 11:21:46,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:21:46,455 INFO L225 Difference]: With dead ends: 1385 [2024-11-02 11:21:46,455 INFO L226 Difference]: Without dead ends: 960 [2024-11-02 11:21:46,459 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 11:21:46,461 INFO L432 NwaCegarLoop]: 494 mSDtfsCounter, 1206 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-02 11:21:46,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1383 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-02 11:21:46,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2024-11-02 11:21:46,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 948. [2024-11-02 11:21:46,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 827 states have (on average 1.4703748488512696) internal successors, (1216), 816 states have internal predecessors, (1216), 92 states have call successors, (92), 26 states have call predecessors, (92), 28 states have return successors, (106), 106 states have call predecessors, (106), 92 states have call successors, (106) [2024-11-02 11:21:46,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1414 transitions. [2024-11-02 11:21:46,565 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1414 transitions. Word has length 81 [2024-11-02 11:21:46,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:21:46,565 INFO L471 AbstractCegarLoop]: Abstraction has 948 states and 1414 transitions. [2024-11-02 11:21:46,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 11:21:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1414 transitions. [2024-11-02 11:21:46,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-02 11:21:46,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:21:46,568 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, 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 11:21:46,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 11:21:46,569 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:21:46,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:21:46,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1459568331, now seen corresponding path program 1 times [2024-11-02 11:21:46,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:21:46,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178272420] [2024-11-02 11:21:46,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:21:46,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:21:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:21:46,829 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 11:21:46,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:21:46,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178272420] [2024-11-02 11:21:46,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178272420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:21:46,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:21:46,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 11:21:46,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086693902] [2024-11-02 11:21:46,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:21:46,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 11:21:46,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:21:46,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 11:21:46,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:21:46,833 INFO L87 Difference]: Start difference. First operand 948 states and 1414 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 11:21:47,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:21:47,880 INFO L93 Difference]: Finished difference Result 3341 states and 5048 transitions. [2024-11-02 11:21:47,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 11:21:47,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-11-02 11:21:47,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:21:47,900 INFO L225 Difference]: With dead ends: 3341 [2024-11-02 11:21:47,900 INFO L226 Difference]: Without dead ends: 2347 [2024-11-02 11:21:47,905 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 11:21:47,907 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 1206 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 11:21:47,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1092 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 11:21:47,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2024-11-02 11:21:48,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 1807. [2024-11-02 11:21:48,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1578 states have (on average 1.474017743979721) internal successors, (2326), 1568 states have internal predecessors, (2326), 172 states have call successors, (172), 50 states have call predecessors, (172), 56 states have return successors, (213), 189 states have call predecessors, (213), 172 states have call successors, (213) [2024-11-02 11:21:48,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2711 transitions. [2024-11-02 11:21:48,067 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2711 transitions. Word has length 81 [2024-11-02 11:21:48,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:21:48,069 INFO L471 AbstractCegarLoop]: Abstraction has 1807 states and 2711 transitions. [2024-11-02 11:21:48,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 11:21:48,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2711 transitions. [2024-11-02 11:21:48,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-02 11:21:48,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:21:48,071 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, 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 11:21:48,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 11:21:48,072 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:21:48,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:21:48,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1015673046, now seen corresponding path program 1 times [2024-11-02 11:21:48,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:21:48,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180156858] [2024-11-02 11:21:48,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:21:48,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:21:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:21:48,249 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 11:21:48,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:21:48,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180156858] [2024-11-02 11:21:48,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180156858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:21:48,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:21:48,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 11:21:48,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407206838] [2024-11-02 11:21:48,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:21:48,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:21:48,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:21:48,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:21:48,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:21:48,254 INFO L87 Difference]: Start difference. First operand 1807 states and 2711 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 11:21:48,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:21:48,947 INFO L93 Difference]: Finished difference Result 5382 states and 8212 transitions. [2024-11-02 11:21:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:21:48,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 81 [2024-11-02 11:21:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:21:48,971 INFO L225 Difference]: With dead ends: 5382 [2024-11-02 11:21:48,972 INFO L226 Difference]: Without dead ends: 3580 [2024-11-02 11:21:48,979 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 11:21:48,984 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 575 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 11:21:48,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 908 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 11:21:48,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3580 states. [2024-11-02 11:21:49,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3580 to 3568. [2024-11-02 11:21:49,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3568 states, 3123 states have (on average 1.4665385846942043) internal successors, (4580), 3103 states have internal predecessors, (4580), 332 states have call successors, (332), 100 states have call predecessors, (332), 112 states have return successors, (411), 365 states have call predecessors, (411), 332 states have call successors, (411) [2024-11-02 11:21:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 5323 transitions. [2024-11-02 11:21:49,203 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 5323 transitions. Word has length 81 [2024-11-02 11:21:49,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:21:49,204 INFO L471 AbstractCegarLoop]: Abstraction has 3568 states and 5323 transitions. [2024-11-02 11:21:49,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 11:21:49,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 5323 transitions. [2024-11-02 11:21:49,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-02 11:21:49,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:21:49,207 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, 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 11:21:49,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 11:21:49,207 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:21:49,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:21:49,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1007922487, now seen corresponding path program 1 times [2024-11-02 11:21:49,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:21:49,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968513710] [2024-11-02 11:21:49,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:21:49,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:21:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:21:49,409 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 11:21:49,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:21:49,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968513710] [2024-11-02 11:21:49,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968513710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:21:49,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:21:49,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 11:21:49,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940821824] [2024-11-02 11:21:49,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:21:49,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 11:21:49,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:21:49,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 11:21:49,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:21:49,413 INFO L87 Difference]: Start difference. First operand 3568 states and 5323 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 11:21:50,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:21:50,534 INFO L93 Difference]: Finished difference Result 12330 states and 18698 transitions. [2024-11-02 11:21:50,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 11:21:50,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-11-02 11:21:50,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:21:50,585 INFO L225 Difference]: With dead ends: 12330 [2024-11-02 11:21:50,585 INFO L226 Difference]: Without dead ends: 8575 [2024-11-02 11:21:50,600 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 11:21:50,602 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 1206 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 11:21:50,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1092 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 11:21:50,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8575 states. [2024-11-02 11:21:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8575 to 6901. [2024-11-02 11:21:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6901 states, 6040 states have (on average 1.4667218543046359) internal successors, (8859), 6028 states have internal predecessors, (8859), 636 states have call successors, (636), 196 states have call predecessors, (636), 224 states have return successors, (815), 677 states have call predecessors, (815), 636 states have call successors, (815) [2024-11-02 11:21:51,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6901 states to 6901 states and 10310 transitions. [2024-11-02 11:21:51,143 INFO L78 Accepts]: Start accepts. Automaton has 6901 states and 10310 transitions. Word has length 81 [2024-11-02 11:21:51,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:21:51,144 INFO L471 AbstractCegarLoop]: Abstraction has 6901 states and 10310 transitions. [2024-11-02 11:21:51,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 11:21:51,145 INFO L276 IsEmpty]: Start isEmpty. Operand 6901 states and 10310 transitions. [2024-11-02 11:21:51,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-02 11:21:51,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:21:51,151 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, 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 11:21:51,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 11:21:51,152 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:21:51,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:21:51,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1556707752, now seen corresponding path program 1 times [2024-11-02 11:21:51,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:21:51,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218546674] [2024-11-02 11:21:51,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:21:51,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:21:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:21:51,286 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 11:21:51,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:21:51,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218546674] [2024-11-02 11:21:51,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218546674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:21:51,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:21:51,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 11:21:51,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654939458] [2024-11-02 11:21:51,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:21:51,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:21:51,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:21:51,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:21:51,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:21:51,290 INFO L87 Difference]: Start difference. First operand 6901 states and 10310 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 11:21:52,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:21:52,391 INFO L93 Difference]: Finished difference Result 20580 states and 31274 transitions. [2024-11-02 11:21:52,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:21:52,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 81 [2024-11-02 11:21:52,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:21:52,494 INFO L225 Difference]: With dead ends: 20580 [2024-11-02 11:21:52,494 INFO L226 Difference]: Without dead ends: 13684 [2024-11-02 11:21:52,519 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 11:21:52,521 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 587 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 11:21:52,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 908 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 11:21:52,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13684 states. [2024-11-02 11:21:53,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13684 to 13646. [2024-11-02 11:21:53,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13646 states, 11961 states have (on average 1.4581556726026252) internal successors, (17441), 11938 states have internal predecessors, (17441), 1236 states have call successors, (1236), 392 states have call predecessors, (1236), 448 states have return successors, (1580), 1316 states have call predecessors, (1580), 1236 states have call successors, (1580) [2024-11-02 11:21:53,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13646 states to 13646 states and 20257 transitions. [2024-11-02 11:21:53,313 INFO L78 Accepts]: Start accepts. Automaton has 13646 states and 20257 transitions. Word has length 81 [2024-11-02 11:21:53,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:21:53,314 INFO L471 AbstractCegarLoop]: Abstraction has 13646 states and 20257 transitions. [2024-11-02 11:21:53,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 11:21:53,315 INFO L276 IsEmpty]: Start isEmpty. Operand 13646 states and 20257 transitions. [2024-11-02 11:21:53,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-02 11:21:53,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:21:53,317 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, 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 11:21:53,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 11:21:53,317 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:21:53,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:21:53,318 INFO L85 PathProgramCache]: Analyzing trace with hash 281605063, now seen corresponding path program 1 times [2024-11-02 11:21:53,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:21:53,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641127560] [2024-11-02 11:21:53,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:21:53,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:21:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:21:53,596 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 11:21:53,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:21:53,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641127560] [2024-11-02 11:21:53,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641127560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:21:53,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:21:53,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 11:21:53,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112107086] [2024-11-02 11:21:53,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:21:53,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 11:21:53,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:21:53,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 11:21:53,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:21:53,600 INFO L87 Difference]: Start difference. First operand 13646 states and 20257 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 11:21:55,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:21:55,767 INFO L93 Difference]: Finished difference Result 46071 states and 69632 transitions. [2024-11-02 11:21:55,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 11:21:55,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-11-02 11:21:55,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:21:55,928 INFO L225 Difference]: With dead ends: 46071 [2024-11-02 11:21:55,928 INFO L226 Difference]: Without dead ends: 31702 [2024-11-02 11:21:55,977 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 11:21:55,978 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 1206 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 11:21:55,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1092 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 11:21:56,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31702 states. [2024-11-02 11:21:57,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31702 to 26644. [2024-11-02 11:21:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26644 states, 23359 states have (on average 1.4563551521897342) internal successors, (34019), 23368 states have internal predecessors, (34019), 2388 states have call successors, (2388), 776 states have call predecessors, (2388), 896 states have return successors, (3100), 2500 states have call predecessors, (3100), 2388 states have call successors, (3100) [2024-11-02 11:21:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26644 states to 26644 states and 39507 transitions. [2024-11-02 11:21:57,913 INFO L78 Accepts]: Start accepts. Automaton has 26644 states and 39507 transitions. Word has length 81 [2024-11-02 11:21:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:21:57,914 INFO L471 AbstractCegarLoop]: Abstraction has 26644 states and 39507 transitions. [2024-11-02 11:21:57,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 11:21:57,915 INFO L276 IsEmpty]: Start isEmpty. Operand 26644 states and 39507 transitions. [2024-11-02 11:21:57,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-02 11:21:57,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:21:57,918 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, 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 11:21:57,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 11:21:57,918 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:21:57,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:21:57,919 INFO L85 PathProgramCache]: Analyzing trace with hash 804925734, now seen corresponding path program 1 times [2024-11-02 11:21:57,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:21:57,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702686587] [2024-11-02 11:21:57,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:21:57,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:21:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:21:58,111 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 11:21:58,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:21:58,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702686587] [2024-11-02 11:21:58,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702686587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:21:58,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:21:58,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 11:21:58,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29674591] [2024-11-02 11:21:58,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:21:58,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 11:21:58,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:21:58,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 11:21:58,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:21:58,114 INFO L87 Difference]: Start difference. First operand 26644 states and 39507 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 11:22:01,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:22:01,252 INFO L93 Difference]: Finished difference Result 89225 states and 134782 transitions. [2024-11-02 11:22:01,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 11:22:01,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-11-02 11:22:01,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:22:01,554 INFO L225 Difference]: With dead ends: 89225 [2024-11-02 11:22:01,554 INFO L226 Difference]: Without dead ends: 61170 [2024-11-02 11:22:01,663 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 11:22:01,664 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 1206 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 11:22:01,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1092 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 11:22:01,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61170 states. [2024-11-02 11:22:04,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61170 to 52368. [2024-11-02 11:22:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52368 states, 45947 states have (on average 1.4538272357281214) internal successors, (66799), 46020 states have internal predecessors, (66799), 4628 states have call successors, (4628), 1544 states have call predecessors, (4628), 1792 states have return successors, (6044), 4804 states have call predecessors, (6044), 4628 states have call successors, (6044) [2024-11-02 11:22:05,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52368 states to 52368 states and 77471 transitions. [2024-11-02 11:22:05,079 INFO L78 Accepts]: Start accepts. Automaton has 52368 states and 77471 transitions. Word has length 81 [2024-11-02 11:22:05,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:22:05,079 INFO L471 AbstractCegarLoop]: Abstraction has 52368 states and 77471 transitions. [2024-11-02 11:22:05,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 11:22:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand 52368 states and 77471 transitions. [2024-11-02 11:22:05,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-02 11:22:05,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:22:05,082 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, 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 11:22:05,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 11:22:05,083 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:22:05,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:22:05,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1856374823, now seen corresponding path program 1 times [2024-11-02 11:22:05,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:22:05,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872096264] [2024-11-02 11:22:05,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:22:05,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:22:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:22:05,542 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 11:22:05,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:22:05,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872096264] [2024-11-02 11:22:05,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872096264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:22:05,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:22:05,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 11:22:05,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675788453] [2024-11-02 11:22:05,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:22:05,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 11:22:05,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:22:05,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 11:22:05,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-02 11:22:05,550 INFO L87 Difference]: Start difference. First operand 52368 states and 77471 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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)