./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.01.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccac7fad-0889-48de-aa9e-e0335fa18234/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccac7fad-0889-48de-aa9e-e0335fa18234/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_ccac7fad-0889-48de-aa9e-e0335fa18234/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccac7fad-0889-48de-aa9e-e0335fa18234/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.01.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccac7fad-0889-48de-aa9e-e0335fa18234/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_ccac7fad-0889-48de-aa9e-e0335fa18234/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 ea17b00cb6ed3e05e0ac7861fb220a62ceca6ba97bc4fe703ce3eb0d0ec5cbfe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:26:41,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:26:41,753 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccac7fad-0889-48de-aa9e-e0335fa18234/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:26:41,760 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:26:41,760 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:26:41,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:26:41,799 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:26:41,800 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:26:41,801 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:26:41,802 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:26:41,803 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:26:41,804 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:26:41,804 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:26:41,804 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:26:41,805 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:26:41,805 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:26:41,809 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:26:41,809 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:26:41,810 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:26:41,810 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:26:41,810 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:26:41,811 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:26:41,811 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:26:41,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:26:41,812 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:26:41,812 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:26:41,812 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:26:41,813 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:26:41,813 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:26:41,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:26:41,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:26:41,814 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:26:41,814 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:26:41,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:26:41,817 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:26:41,818 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:26:41,818 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:26:41,818 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:26:41,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:26:41,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:26:41,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:26:41,819 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:26:41,820 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:26:41,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:26:41,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:26:41,821 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:26:41,821 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:26:41,821 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_ccac7fad-0889-48de-aa9e-e0335fa18234/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccac7fad-0889-48de-aa9e-e0335fa18234/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea17b00cb6ed3e05e0ac7861fb220a62ceca6ba97bc4fe703ce3eb0d0ec5cbfe [2024-11-02 12:26:42,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:26:42,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:26:42,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:26:42,169 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:26:42,169 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:26:42,171 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccac7fad-0889-48de-aa9e-e0335fa18234/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/systemc/transmitter.01.cil.c Unable to find full path for "g++" [2024-11-02 12:26:44,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:26:44,301 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:26:44,302 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccac7fad-0889-48de-aa9e-e0335fa18234/sv-benchmarks/c/systemc/transmitter.01.cil.c [2024-11-02 12:26:44,312 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccac7fad-0889-48de-aa9e-e0335fa18234/bin/utaipan-verify-DbMuA5NWw2/data/ee54a90bf/e12e2a965f0f4aea85c615863dbd634c/FLAGffd08c413 [2024-11-02 12:26:44,331 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccac7fad-0889-48de-aa9e-e0335fa18234/bin/utaipan-verify-DbMuA5NWw2/data/ee54a90bf/e12e2a965f0f4aea85c615863dbd634c [2024-11-02 12:26:44,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:26:44,335 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:26:44,337 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:26:44,337 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:26:44,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:26:44,344 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:26:44" (1/1) ... [2024-11-02 12:26:44,345 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@753140f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:44, skipping insertion in model container [2024-11-02 12:26:44,345 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:26:44" (1/1) ... [2024-11-02 12:26:44,376 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:26:44,553 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_ccac7fad-0889-48de-aa9e-e0335fa18234/sv-benchmarks/c/systemc/transmitter.01.cil.c[706,719] [2024-11-02 12:26:44,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:26:44,615 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:26:44,627 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_ccac7fad-0889-48de-aa9e-e0335fa18234/sv-benchmarks/c/systemc/transmitter.01.cil.c[706,719] [2024-11-02 12:26:44,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:26:44,672 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:26:44,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:44 WrapperNode [2024-11-02 12:26:44,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:26:44,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:26:44,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:26:44,674 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:26:44,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:44" (1/1) ... [2024-11-02 12:26:44,686 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:44" (1/1) ... [2024-11-02 12:26:44,707 INFO L138 Inliner]: procedures = 30, calls = 33, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 212 [2024-11-02 12:26:44,707 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:26:44,708 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:26:44,708 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:26:44,708 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:26:44,716 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:44" (1/1) ... [2024-11-02 12:26:44,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:44" (1/1) ... [2024-11-02 12:26:44,719 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:44" (1/1) ... [2024-11-02 12:26:44,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:44" (1/1) ... [2024-11-02 12:26:44,725 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:44" (1/1) ... [2024-11-02 12:26:44,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:44" (1/1) ... [2024-11-02 12:26:44,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:44" (1/1) ... [2024-11-02 12:26:44,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:44" (1/1) ... [2024-11-02 12:26:44,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:26:44,736 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:26:44,736 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:26:44,737 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:26:44,737 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:44" (1/1) ... [2024-11-02 12:26:44,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:26:44,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccac7fad-0889-48de-aa9e-e0335fa18234/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:44,770 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccac7fad-0889-48de-aa9e-e0335fa18234/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:26:44,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccac7fad-0889-48de-aa9e-e0335fa18234/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:26:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:26:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-02 12:26:44,826 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-02 12:26:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-02 12:26:44,829 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-02 12:26:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-02 12:26:44,829 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-02 12:26:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-02 12:26:44,830 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-02 12:26:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:26:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-02 12:26:44,830 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-02 12:26:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:26:44,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:26:44,923 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:26:44,926 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:26:45,370 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-02 12:26:45,370 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:26:45,516 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:26:45,516 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-02 12:26:45,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:26:45 BoogieIcfgContainer [2024-11-02 12:26:45,517 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:26:45,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:26:45,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:26:45,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:26:45,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:26:44" (1/3) ... [2024-11-02 12:26:45,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758bbb11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:26:45, skipping insertion in model container [2024-11-02 12:26:45,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:44" (2/3) ... [2024-11-02 12:26:45,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758bbb11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:26:45, skipping insertion in model container [2024-11-02 12:26:45,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:26:45" (3/3) ... [2024-11-02 12:26:45,530 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2024-11-02 12:26:45,551 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:26:45,551 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:26:45,617 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:26:45,623 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;@485c1ffd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:26:45,623 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:26:45,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 46 states have internal predecessors, (64), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-02 12:26:45,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-02 12:26:45,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:45,635 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] [2024-11-02 12:26:45,635 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:45,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:45,641 INFO L85 PathProgramCache]: Analyzing trace with hash -520714470, now seen corresponding path program 1 times [2024-11-02 12:26:45,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:45,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218711729] [2024-11-02 12:26:45,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:45,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:45,957 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 12:26:45,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:45,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218711729] [2024-11-02 12:26:45,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218711729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:45,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:45,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:26:45,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026594291] [2024-11-02 12:26:45,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:45,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:26:45,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:45,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:26:45,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:26:45,997 INFO L87 Difference]: Start difference. First operand has 64 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 46 states have internal predecessors, (64), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 12:26:46,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:46,265 INFO L93 Difference]: Finished difference Result 179 states and 253 transitions. [2024-11-02 12:26:46,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:26:46,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 33 [2024-11-02 12:26:46,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:46,277 INFO L225 Difference]: With dead ends: 179 [2024-11-02 12:26:46,277 INFO L226 Difference]: Without dead ends: 116 [2024-11-02 12:26:46,281 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 12:26:46,287 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 142 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:46,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 186 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:26:46,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-02 12:26:46,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2024-11-02 12:26:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 81 states have internal predecessors, (103), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-02 12:26:46,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 147 transitions. [2024-11-02 12:26:46,360 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 147 transitions. Word has length 33 [2024-11-02 12:26:46,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:46,361 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 147 transitions. [2024-11-02 12:26:46,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 12:26:46,361 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 147 transitions. [2024-11-02 12:26:46,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-02 12:26:46,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:46,365 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] [2024-11-02 12:26:46,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:26:46,366 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:46,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:46,367 INFO L85 PathProgramCache]: Analyzing trace with hash 259266459, now seen corresponding path program 1 times [2024-11-02 12:26:46,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:46,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211930321] [2024-11-02 12:26:46,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:46,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:46,735 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 12:26:46,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:46,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211930321] [2024-11-02 12:26:46,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211930321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:46,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:46,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:26:46,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509511161] [2024-11-02 12:26:46,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:46,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:26:46,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:46,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:26:46,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:26:46,745 INFO L87 Difference]: Start difference. First operand 112 states and 147 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 12:26:47,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:47,177 INFO L93 Difference]: Finished difference Result 282 states and 366 transitions. [2024-11-02 12:26:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:26:47,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 33 [2024-11-02 12:26:47,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:47,185 INFO L225 Difference]: With dead ends: 282 [2024-11-02 12:26:47,185 INFO L226 Difference]: Without dead ends: 176 [2024-11-02 12:26:47,186 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 12:26:47,187 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 172 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:47,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 181 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:26:47,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-02 12:26:47,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 167. [2024-11-02 12:26:47,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 120 states have (on average 1.2916666666666667) internal successors, (155), 122 states have internal predecessors, (155), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-02 12:26:47,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 215 transitions. [2024-11-02 12:26:47,238 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 215 transitions. Word has length 33 [2024-11-02 12:26:47,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:47,239 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 215 transitions. [2024-11-02 12:26:47,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 12:26:47,243 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 215 transitions. [2024-11-02 12:26:47,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-02 12:26:47,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:47,244 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] [2024-11-02 12:26:47,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:26:47,244 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:47,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:47,245 INFO L85 PathProgramCache]: Analyzing trace with hash -906905426, now seen corresponding path program 1 times [2024-11-02 12:26:47,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:47,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179121754] [2024-11-02 12:26:47,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:47,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:47,334 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 12:26:47,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:47,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179121754] [2024-11-02 12:26:47,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179121754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:47,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:47,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:26:47,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279136924] [2024-11-02 12:26:47,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:47,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:26:47,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:47,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:26:47,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:26:47,339 INFO L87 Difference]: Start difference. First operand 167 states and 215 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-02 12:26:47,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:47,459 INFO L93 Difference]: Finished difference Result 481 states and 621 transitions. [2024-11-02 12:26:47,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:26:47,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2024-11-02 12:26:47,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:47,467 INFO L225 Difference]: With dead ends: 481 [2024-11-02 12:26:47,467 INFO L226 Difference]: Without dead ends: 319 [2024-11-02 12:26:47,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:26:47,473 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 59 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:47,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 139 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:26:47,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-02 12:26:47,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 316. [2024-11-02 12:26:47,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 227 states have (on average 1.2466960352422907) internal successors, (283), 230 states have internal predecessors, (283), 56 states have call successors, (56), 32 states have call predecessors, (56), 32 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-02 12:26:47,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 395 transitions. [2024-11-02 12:26:47,552 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 395 transitions. Word has length 35 [2024-11-02 12:26:47,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:47,553 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 395 transitions. [2024-11-02 12:26:47,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-02 12:26:47,553 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 395 transitions. [2024-11-02 12:26:47,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-02 12:26:47,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:47,557 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 12:26:47,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:26:47,557 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:47,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:47,559 INFO L85 PathProgramCache]: Analyzing trace with hash -688393263, now seen corresponding path program 1 times [2024-11-02 12:26:47,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:47,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212817548] [2024-11-02 12:26:47,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:47,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:26:47,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:47,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212817548] [2024-11-02 12:26:47,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212817548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:47,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:47,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:26:47,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153383921] [2024-11-02 12:26:47,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:47,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:26:47,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:47,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:26:47,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:26:47,666 INFO L87 Difference]: Start difference. First operand 316 states and 395 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-02 12:26:47,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:47,783 INFO L93 Difference]: Finished difference Result 580 states and 731 transitions. [2024-11-02 12:26:47,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:26:47,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2024-11-02 12:26:47,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:47,792 INFO L225 Difference]: With dead ends: 580 [2024-11-02 12:26:47,793 INFO L226 Difference]: Without dead ends: 419 [2024-11-02 12:26:47,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:26:47,795 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 35 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:47,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 164 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:26:47,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2024-11-02 12:26:47,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 352. [2024-11-02 12:26:47,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 257 states have (on average 1.245136186770428) internal successors, (320), 260 states have internal predecessors, (320), 59 states have call successors, (59), 35 states have call predecessors, (59), 35 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-02 12:26:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 438 transitions. [2024-11-02 12:26:47,870 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 438 transitions. Word has length 49 [2024-11-02 12:26:47,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:47,873 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 438 transitions. [2024-11-02 12:26:47,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-02 12:26:47,873 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 438 transitions. [2024-11-02 12:26:47,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-02 12:26:47,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:47,877 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 12:26:47,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:26:47,878 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:47,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:47,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1120584992, now seen corresponding path program 1 times [2024-11-02 12:26:47,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:47,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775587422] [2024-11-02 12:26:47,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:47,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:47,986 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-02 12:26:47,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:47,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775587422] [2024-11-02 12:26:47,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775587422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:47,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:47,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:26:47,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122135250] [2024-11-02 12:26:47,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:47,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:26:47,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:47,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:26:47,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:26:47,990 INFO L87 Difference]: Start difference. First operand 352 states and 438 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:26:48,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:48,203 INFO L93 Difference]: Finished difference Result 549 states and 694 transitions. [2024-11-02 12:26:48,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:26:48,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2024-11-02 12:26:48,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:48,207 INFO L225 Difference]: With dead ends: 549 [2024-11-02 12:26:48,207 INFO L226 Difference]: Without dead ends: 352 [2024-11-02 12:26:48,208 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 12:26:48,209 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 131 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:48,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 186 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:26:48,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-11-02 12:26:48,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 348. [2024-11-02 12:26:48,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 253 states have (on average 1.209486166007905) internal successors, (306), 256 states have internal predecessors, (306), 59 states have call successors, (59), 35 states have call predecessors, (59), 35 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-02 12:26:48,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 424 transitions. [2024-11-02 12:26:48,276 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 424 transitions. Word has length 63 [2024-11-02 12:26:48,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:48,278 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 424 transitions. [2024-11-02 12:26:48,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:26:48,279 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 424 transitions. [2024-11-02 12:26:48,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-02 12:26:48,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:48,285 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:48,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:26:48,286 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:48,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:48,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1895057569, now seen corresponding path program 1 times [2024-11-02 12:26:48,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:48,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056470031] [2024-11-02 12:26:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:48,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:26:48,317 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 12:26:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:26:48,386 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-02 12:26:48,387 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 12:26:48,388 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 12:26:48,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:26:48,396 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-02 12:26:48,483 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:26:48,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:26:48 BoogieIcfgContainer [2024-11-02 12:26:48,489 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:26:48,494 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:26:48,494 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:26:48,494 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:26:48,495 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:26:45" (3/4) ... [2024-11-02 12:26:48,496 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-02 12:26:48,610 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccac7fad-0889-48de-aa9e-e0335fa18234/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:26:48,610 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:26:48,611 INFO L158 Benchmark]: Toolchain (without parser) took 4275.96ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 95.6MB in the beginning and 86.8MB in the end (delta: 8.8MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. [2024-11-02 12:26:48,611 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 98.6MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:26:48,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 336.18ms. Allocated memory is still 132.1MB. Free memory was 95.6MB in the beginning and 80.9MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-02 12:26:48,612 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.95ms. Allocated memory is still 132.1MB. Free memory was 80.9MB in the beginning and 78.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:26:48,613 INFO L158 Benchmark]: Boogie Preprocessor took 27.56ms. Allocated memory is still 132.1MB. Free memory was 78.9MB in the beginning and 77.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:26:48,613 INFO L158 Benchmark]: RCFGBuilder took 781.50ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 77.2MB in the beginning and 130.0MB in the end (delta: -52.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-02 12:26:48,613 INFO L158 Benchmark]: TraceAbstraction took 2969.16ms. Allocated memory is still 172.0MB. Free memory was 130.0MB in the beginning and 92.0MB in the end (delta: 38.0MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2024-11-02 12:26:48,614 INFO L158 Benchmark]: Witness Printer took 116.52ms. Allocated memory is still 172.0MB. Free memory was 92.0MB in the beginning and 86.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-02 12:26:48,616 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 98.6MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 336.18ms. Allocated memory is still 132.1MB. Free memory was 95.6MB in the beginning and 80.9MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.95ms. Allocated memory is still 132.1MB. Free memory was 80.9MB in the beginning and 78.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.56ms. Allocated memory is still 132.1MB. Free memory was 78.9MB in the beginning and 77.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 781.50ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 77.2MB in the beginning and 130.0MB in the end (delta: -52.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2969.16ms. Allocated memory is still 172.0MB. Free memory was 130.0MB in the beginning and 92.0MB in the end (delta: 38.0MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. * Witness Printer took 116.52ms. Allocated memory is still 172.0MB. Free memory was 92.0MB in the beginning and 86.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 21]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int m_pc = 0; [L26] int t1_pc = 0; [L27] int m_st ; [L28] int t1_st ; [L29] int m_i ; [L30] int t1_i ; [L31] int M_E = 2; [L32] int T1_E = 2; [L33] int E_1 = 2; [L449] int __retres1 ; [L453] CALL init_model() [L364] m_i = 1 [L365] t1_i = 1 [L453] RET init_model() [L454] CALL start_simulation() [L390] int kernel_st ; [L391] int tmp ; [L392] int tmp___0 ; [L396] kernel_st = 0 VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L397] FCALL update_channels() VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L398] CALL init_threads() [L161] COND TRUE m_i == 1 [L162] m_st = 0 [L166] COND TRUE t1_i == 1 [L167] t1_st = 0 [L398] RET init_threads() [L399] CALL fire_delta_events() VAL [E_1=2, M_E=2, T1_E=2, \old(E_1)=2, \old(M_E)=2, \old(T1_E)=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L250] COND FALSE !(M_E == 0) [L255] COND FALSE !(T1_E == 0) [L260] COND FALSE !(E_1 == 0) [L399] RET fire_delta_events() VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L400] CALL activate_threads() VAL [E_1=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L293] int tmp ; [L294] int tmp___0 ; [L298] CALL, EXPR is_master_triggered() [L112] int __retres1 ; VAL [E_1=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L115] COND FALSE !(m_pc == 1) VAL [E_1=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L125] __retres1 = 0 VAL [E_1=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, __retres1=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L127] return (__retres1); [L298] RET, EXPR is_master_triggered() [L298] tmp = is_master_triggered() [L300] COND FALSE !(\read(tmp)) [L306] CALL, EXPR is_transmit1_triggered() [L131] int __retres1 ; VAL [E_1=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L134] COND FALSE !(t1_pc == 1) VAL [E_1=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L144] __retres1 = 0 VAL [E_1=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, __retres1=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L146] return (__retres1); [L306] RET, EXPR is_transmit1_triggered() [L306] tmp___0 = is_transmit1_triggered() [L308] COND FALSE !(\read(tmp___0)) [L400] RET activate_threads() VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L401] CALL reset_delta_events() VAL [E_1=2, M_E=2, T1_E=2, \old(E_1)=2, \old(M_E)=2, \old(T1_E)=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L273] COND FALSE !(M_E == 1) [L278] COND FALSE !(T1_E == 1) [L283] COND FALSE !(E_1 == 1) [L401] RET reset_delta_events() VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L404] COND TRUE 1 [L407] kernel_st = 1 [L408] CALL eval() [L197] int tmp ; VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L201] COND TRUE 1 VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L204] CALL, EXPR exists_runnable_thread() VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L176] int __retres1 ; [L179] COND TRUE m_st == 0 [L180] __retres1 = 1 [L192] return (__retres1); [L204] RET, EXPR exists_runnable_thread() VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L204] tmp = exists_runnable_thread() [L206] COND TRUE \read(tmp) VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L211] COND TRUE m_st == 0 [L212] int tmp_ndt_1; [L213] tmp_ndt_1 = __VERIFIER_nondet_int() [L214] COND FALSE !(\read(tmp_ndt_1)) VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L225] COND TRUE t1_st == 0 [L226] int tmp_ndt_2; [L227] tmp_ndt_2 = __VERIFIER_nondet_int() [L228] COND TRUE \read(tmp_ndt_2) [L230] t1_st = 1 [L231] CALL transmit1() [L82] COND TRUE t1_pc == 0 VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=1] [L93] COND TRUE 1 [L95] t1_pc = 1 [L96] t1_st = 2 [L231] RET transmit1() [L201] COND TRUE 1 VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2] [L204] CALL, EXPR exists_runnable_thread() VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2] [L176] int __retres1 ; [L179] COND TRUE m_st == 0 [L180] __retres1 = 1 [L192] return (__retres1); [L204] RET, EXPR exists_runnable_thread() VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2] [L204] tmp = exists_runnable_thread() [L206] COND TRUE \read(tmp) VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2] [L211] COND TRUE m_st == 0 [L212] int tmp_ndt_1; [L213] tmp_ndt_1 = __VERIFIER_nondet_int() [L214] COND TRUE \read(tmp_ndt_1) [L216] m_st = 1 [L217] CALL master() [L41] COND TRUE m_pc == 0 VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2] [L52] COND TRUE 1 [L55] E_1 = 1 [L56] CALL immediate_notify() [L322] CALL activate_threads() VAL [E_1=1, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2] [L293] int tmp ; [L294] int tmp___0 ; [L298] CALL, EXPR is_master_triggered() [L112] int __retres1 ; VAL [E_1=1, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2] [L115] COND FALSE !(m_pc == 1) VAL [E_1=1, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2] [L125] __retres1 = 0 VAL [E_1=1, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, __retres1=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2] [L127] return (__retres1); [L298] RET, EXPR is_master_triggered() [L298] tmp = is_master_triggered() [L300] COND FALSE !(\read(tmp)) [L306] CALL, EXPR is_transmit1_triggered() [L131] int __retres1 ; VAL [E_1=1, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2] [L134] COND TRUE t1_pc == 1 VAL [E_1=1, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2] [L135] COND TRUE E_1 == 1 [L136] __retres1 = 1 VAL [E_1=1, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, __retres1=1, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2] [L146] return (__retres1); [L306] RET, EXPR is_transmit1_triggered() [L306] tmp___0 = is_transmit1_triggered() [L308] COND TRUE \read(tmp___0) [L309] t1_st = 0 [L322] RET activate_threads() VAL [E_1=1, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0] [L56] RET immediate_notify() [L57] E_1 = 2 VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0] [L60] COND TRUE 1 [L62] m_pc = 1 [L63] m_st = 2 VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=0] [L217] RET master() [L225] COND TRUE t1_st == 0 [L226] int tmp_ndt_2; [L227] tmp_ndt_2 = __VERIFIER_nondet_int() [L228] COND TRUE \read(tmp_ndt_2) [L230] t1_st = 1 [L231] CALL transmit1() [L82] COND FALSE !(t1_pc == 0) VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1] [L85] COND TRUE t1_pc == 1 [L101] CALL error() [L21] reach_error() VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 546 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 539 mSDsluCounter, 856 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 382 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 439 IncrementalHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 474 mSDtfsCounter, 439 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=352occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 87 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 276 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 349 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 32/32 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-02 12:26:48,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccac7fad-0889-48de-aa9e-e0335fa18234/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE