./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh --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 ffdd9c6c8ed32275119d4b9d2dc66b9f80986fea1a039186a702d6c803e62485 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:18:48,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:18:48,797 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 19:18:48,802 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:18:48,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:18:48,828 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:18:48,829 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:18:48,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:18:48,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:18:48,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:18:48,832 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:18:48,832 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:18:48,833 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:18:48,833 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:18:48,834 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:18:48,834 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:18:48,835 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:18:48,835 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:18:48,836 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:18:48,836 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:18:48,837 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:18:48,837 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:18:48,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:18:48,839 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:18:48,839 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:18:48,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:18:48,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:18:48,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:18:48,841 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:18:48,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:18:48,841 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:18:48,842 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:18:48,842 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:18:48,843 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:18:48,843 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:18:48,844 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:18:48,844 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:18:48,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:18:48,844 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:18:48,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:18:48,845 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:18:48,845 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:18:48,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:18:48,846 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:18:48,846 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:18:48,846 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:18:48,846 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:18:48,846 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_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffdd9c6c8ed32275119d4b9d2dc66b9f80986fea1a039186a702d6c803e62485 [2023-12-02 19:18:49,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:18:49,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:18:49,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:18:49,096 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:18:49,096 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:18:49,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c [2023-12-02 19:18:51,907 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:18:52,087 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:18:52,088 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c [2023-12-02 19:18:52,102 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/data/74d9288c4/67106bdad83a4a159219968bc58e5f05/FLAG99aca7fbc [2023-12-02 19:18:52,115 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/data/74d9288c4/67106bdad83a4a159219968bc58e5f05 [2023-12-02 19:18:52,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:18:52,120 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:18:52,121 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:18:52,121 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:18:52,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:18:52,126 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:18:52" (1/1) ... [2023-12-02 19:18:52,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a42b99f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:18:52, skipping insertion in model container [2023-12-02 19:18:52,127 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:18:52" (1/1) ... [2023-12-02 19:18:52,177 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:18:52,362 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c[44811,44824] [2023-12-02 19:18:52,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:18:52,382 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:18:52,436 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/sv-benchmarks/c/bitvector/s3_srvr_2a_alt.BV.c.cil.c[44811,44824] [2023-12-02 19:18:52,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:18:52,453 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:18:52,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:18:52 WrapperNode [2023-12-02 19:18:52,454 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:18:52,455 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:18:52,455 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:18:52,456 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:18:52,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:18:52" (1/1) ... [2023-12-02 19:18:52,475 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:18:52" (1/1) ... [2023-12-02 19:18:52,510 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 577 [2023-12-02 19:18:52,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:18:52,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:18:52,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:18:52,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:18:52,519 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:18:52" (1/1) ... [2023-12-02 19:18:52,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:18:52" (1/1) ... [2023-12-02 19:18:52,522 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:18:52" (1/1) ... [2023-12-02 19:18:52,523 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:18:52" (1/1) ... [2023-12-02 19:18:52,530 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:18:52" (1/1) ... [2023-12-02 19:18:52,536 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:18:52" (1/1) ... [2023-12-02 19:18:52,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:18:52" (1/1) ... [2023-12-02 19:18:52,539 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:18:52" (1/1) ... [2023-12-02 19:18:52,543 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:18:52,543 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:18:52,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:18:52,544 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:18:52,544 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:18:52" (1/1) ... [2023-12-02 19:18:52,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:18:52,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:18:52,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:18:52,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:18:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:18:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:18:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:18:52,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:18:52,701 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:18:52,704 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:18:52,722 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 19:18:53,193 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2023-12-02 19:18:53,193 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2023-12-02 19:18:53,193 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:18:53,326 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:18:53,326 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 19:18:53,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:18:53 BoogieIcfgContainer [2023-12-02 19:18:53,328 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:18:53,331 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:18:53,331 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:18:53,334 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:18:53,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:18:52" (1/3) ... [2023-12-02 19:18:53,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b079c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:18:53, skipping insertion in model container [2023-12-02 19:18:53,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:18:52" (2/3) ... [2023-12-02 19:18:53,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b079c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:18:53, skipping insertion in model container [2023-12-02 19:18:53,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:18:53" (3/3) ... [2023-12-02 19:18:53,337 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_2a_alt.BV.c.cil.c [2023-12-02 19:18:53,354 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:18:53,355 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:18:53,394 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:18:53,400 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@4d201472, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:18:53,400 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:18:53,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 102 states have (on average 1.7843137254901962) internal successors, (182), 103 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:18:53,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 19:18:53,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:18:53,413 INFO L195 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] [2023-12-02 19:18:53,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:18:53,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:18:53,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1391795705, now seen corresponding path program 1 times [2023-12-02 19:18:53,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:18:53,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074813854] [2023-12-02 19:18:53,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:18:53,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:18:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:18:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:18:53,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:18:53,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074813854] [2023-12-02 19:18:53,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074813854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:18:53,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:18:53,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:18:53,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074679827] [2023-12-02 19:18:53,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:18:53,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:18:53,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:18:53,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:18:53,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:18:53,771 INFO L87 Difference]: Start difference. First operand has 104 states, 102 states have (on average 1.7843137254901962) internal successors, (182), 103 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:18:53,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:18:53,970 INFO L93 Difference]: Finished difference Result 214 states and 374 transitions. [2023-12-02 19:18:53,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:18:53,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-02 19:18:53,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:18:53,982 INFO L225 Difference]: With dead ends: 214 [2023-12-02 19:18:53,982 INFO L226 Difference]: Without dead ends: 105 [2023-12-02 19:18:53,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:18:53,988 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 5 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:18:53,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 209 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:18:54,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-02 19:18:54,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2023-12-02 19:18:54,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.4509803921568627) internal successors, (148), 102 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:18:54,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 148 transitions. [2023-12-02 19:18:54,026 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 148 transitions. Word has length 39 [2023-12-02 19:18:54,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:18:54,027 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 148 transitions. [2023-12-02 19:18:54,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:18:54,028 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 148 transitions. [2023-12-02 19:18:54,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 19:18:54,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:18:54,031 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2023-12-02 19:18:54,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:18:54,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:18:54,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:18:54,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1653679508, now seen corresponding path program 1 times [2023-12-02 19:18:54,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:18:54,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018778391] [2023-12-02 19:18:54,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:18:54,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:18:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:18:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:18:54,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:18:54,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018778391] [2023-12-02 19:18:54,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018778391] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:18:54,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262539673] [2023-12-02 19:18:54,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:18:54,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:18:54,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:18:54,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:18:54,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:18:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:18:54,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:18:54,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:18:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:18:54,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:18:54,548 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 19:18:54,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262539673] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 19:18:54,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:18:54,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 4 [2023-12-02 19:18:54,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869466888] [2023-12-02 19:18:54,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:18:54,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:18:54,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:18:54,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:18:54,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:18:54,552 INFO L87 Difference]: Start difference. First operand 103 states and 148 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:18:54,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:18:54,607 INFO L93 Difference]: Finished difference Result 193 states and 283 transitions. [2023-12-02 19:18:54,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:18:54,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-02 19:18:54,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:18:54,612 INFO L225 Difference]: With dead ends: 193 [2023-12-02 19:18:54,612 INFO L226 Difference]: Without dead ends: 191 [2023-12-02 19:18:54,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:18:54,614 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 91 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:18:54,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 248 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:18:54,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-12-02 19:18:54,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2023-12-02 19:18:54,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.4814814814814814) internal successors, (280), 189 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:18:54,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 280 transitions. [2023-12-02 19:18:54,634 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 280 transitions. Word has length 53 [2023-12-02 19:18:54,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:18:54,635 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 280 transitions. [2023-12-02 19:18:54,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:18:54,636 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 280 transitions. [2023-12-02 19:18:54,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 19:18:54,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:18:54,639 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 19:18:54,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:18:54,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:18:54,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:18:54,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:18:54,843 INFO L85 PathProgramCache]: Analyzing trace with hash -966498328, now seen corresponding path program 1 times [2023-12-02 19:18:54,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:18:54,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851234299] [2023-12-02 19:18:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:18:54,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:18:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:18:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 19:18:54,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:18:54,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851234299] [2023-12-02 19:18:54,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851234299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:18:54,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:18:54,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:18:54,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913084299] [2023-12-02 19:18:54,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:18:54,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:18:54,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:18:54,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:18:54,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:18:54,975 INFO L87 Difference]: Start difference. First operand 190 states and 280 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:18:55,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:18:55,177 INFO L93 Difference]: Finished difference Result 331 states and 497 transitions. [2023-12-02 19:18:55,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:18:55,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-02 19:18:55,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:18:55,180 INFO L225 Difference]: With dead ends: 331 [2023-12-02 19:18:55,181 INFO L226 Difference]: Without dead ends: 240 [2023-12-02 19:18:55,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:18:55,183 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 13 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:18:55,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 195 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:18:55,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-12-02 19:18:55,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 228. [2023-12-02 19:18:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.4185022026431717) internal successors, (322), 227 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:18:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 322 transitions. [2023-12-02 19:18:55,201 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 322 transitions. Word has length 70 [2023-12-02 19:18:55,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:18:55,202 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 322 transitions. [2023-12-02 19:18:55,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:18:55,202 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 322 transitions. [2023-12-02 19:18:55,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 19:18:55,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:18:55,207 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1] [2023-12-02 19:18:55,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:18:55,207 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:18:55,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:18:55,208 INFO L85 PathProgramCache]: Analyzing trace with hash 609639533, now seen corresponding path program 1 times [2023-12-02 19:18:55,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:18:55,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008809254] [2023-12-02 19:18:55,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:18:55,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:18:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:18:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-02 19:18:55,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:18:55,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008809254] [2023-12-02 19:18:55,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008809254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:18:55,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:18:55,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:18:55,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490305110] [2023-12-02 19:18:55,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:18:55,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:18:55,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:18:55,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:18:55,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:18:55,284 INFO L87 Difference]: Start difference. First operand 228 states and 322 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:18:55,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:18:55,424 INFO L93 Difference]: Finished difference Result 510 states and 738 transitions. [2023-12-02 19:18:55,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:18:55,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-02 19:18:55,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:18:55,427 INFO L225 Difference]: With dead ends: 510 [2023-12-02 19:18:55,428 INFO L226 Difference]: Without dead ends: 294 [2023-12-02 19:18:55,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:18:55,430 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 21 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:18:55,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 184 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:18:55,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-02 19:18:55,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 274. [2023-12-02 19:18:55,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.36996336996337) internal successors, (374), 273 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:18:55,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 374 transitions. [2023-12-02 19:18:55,446 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 374 transitions. Word has length 89 [2023-12-02 19:18:55,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:18:55,447 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 374 transitions. [2023-12-02 19:18:55,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:18:55,447 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 374 transitions. [2023-12-02 19:18:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 19:18:55,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:18:55,451 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 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] [2023-12-02 19:18:55,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:18:55,451 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:18:55,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:18:55,452 INFO L85 PathProgramCache]: Analyzing trace with hash -91609082, now seen corresponding path program 1 times [2023-12-02 19:18:55,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:18:55,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266342916] [2023-12-02 19:18:55,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:18:55,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:18:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:18:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:18:55,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:18:55,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266342916] [2023-12-02 19:18:55,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266342916] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:18:55,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643737508] [2023-12-02 19:18:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:18:55,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:18:55,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:18:55,707 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:18:55,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 19:18:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:18:55,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:18:55,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:18:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:18:55,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:18:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-02 19:18:56,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643737508] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:18:56,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2097309774] [2023-12-02 19:18:56,296 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 19:18:56,296 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:18:56,299 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:18:56,304 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:18:56,304 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:19:06,808 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:19:39,997 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3162#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2023-12-02 19:19:39,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:19:39,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:19:39,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 3] total 7 [2023-12-02 19:19:39,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284492220] [2023-12-02 19:19:39,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:19:39,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 19:19:40,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:19:40,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 19:19:40,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=2373, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 19:19:40,002 INFO L87 Difference]: Start difference. First operand 274 states and 374 transitions. Second operand has 8 states, 8 states have (on average 21.625) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:19:40,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:19:40,140 INFO L93 Difference]: Finished difference Result 647 states and 897 transitions. [2023-12-02 19:19:40,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:19:40,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-02 19:19:40,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:19:40,145 INFO L225 Difference]: With dead ends: 647 [2023-12-02 19:19:40,145 INFO L226 Difference]: Without dead ends: 645 [2023-12-02 19:19:40,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=597, Invalid=2373, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 19:19:40,148 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 561 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:19:40,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1745 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:19:40,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-12-02 19:19:40,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 529. [2023-12-02 19:19:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 1.3806818181818181) internal successors, (729), 528 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:19:40,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 729 transitions. [2023-12-02 19:19:40,166 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 729 transitions. Word has length 108 [2023-12-02 19:19:40,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:19:40,167 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 729 transitions. [2023-12-02 19:19:40,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:19:40,168 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 729 transitions. [2023-12-02 19:19:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-02 19:19:40,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:19:40,172 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:19:40,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 19:19:40,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:19:40,374 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:19:40,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:19:40,374 INFO L85 PathProgramCache]: Analyzing trace with hash -861268692, now seen corresponding path program 2 times [2023-12-02 19:19:40,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:19:40,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863672521] [2023-12-02 19:19:40,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:40,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:19:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:40,445 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 19:19:40,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:19:40,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863672521] [2023-12-02 19:19:40,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863672521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:19:40,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:19:40,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:19:40,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606898154] [2023-12-02 19:19:40,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:19:40,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:19:40,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:19:40,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:19:40,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:19:40,448 INFO L87 Difference]: Start difference. First operand 529 states and 729 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:19:40,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:19:40,598 INFO L93 Difference]: Finished difference Result 1169 states and 1662 transitions. [2023-12-02 19:19:40,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:19:40,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-12-02 19:19:40,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:19:40,604 INFO L225 Difference]: With dead ends: 1169 [2023-12-02 19:19:40,604 INFO L226 Difference]: Without dead ends: 652 [2023-12-02 19:19:40,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:19:40,606 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 32 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:19:40,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 179 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:19:40,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2023-12-02 19:19:40,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 646. [2023-12-02 19:19:40,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 645 states have (on average 1.3255813953488371) internal successors, (855), 645 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:19:40,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 855 transitions. [2023-12-02 19:19:40,622 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 855 transitions. Word has length 163 [2023-12-02 19:19:40,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:19:40,622 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 855 transitions. [2023-12-02 19:19:40,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:19:40,623 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 855 transitions. [2023-12-02 19:19:40,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-02 19:19:40,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:19:40,626 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:19:40,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 19:19:40,626 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:19:40,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:19:40,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1761510815, now seen corresponding path program 1 times [2023-12-02 19:19:40,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:19:40,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785649995] [2023-12-02 19:19:40,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:40,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:19:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 281 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-12-02 19:19:40,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:19:40,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785649995] [2023-12-02 19:19:40,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785649995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:19:40,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:19:40,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:19:40,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299096006] [2023-12-02 19:19:40,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:19:40,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:19:40,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:19:40,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:19:40,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:19:40,700 INFO L87 Difference]: Start difference. First operand 646 states and 855 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:19:40,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:19:40,849 INFO L93 Difference]: Finished difference Result 1444 states and 1986 transitions. [2023-12-02 19:19:40,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:19:40,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2023-12-02 19:19:40,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:19:40,854 INFO L225 Difference]: With dead ends: 1444 [2023-12-02 19:19:40,854 INFO L226 Difference]: Without dead ends: 762 [2023-12-02 19:19:40,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:19:40,856 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 31 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:19:40,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 181 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:19:40,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2023-12-02 19:19:40,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2023-12-02 19:19:40,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 761 states have (on average 1.2917214191852826) internal successors, (983), 761 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:19:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 983 transitions. [2023-12-02 19:19:40,872 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 983 transitions. Word has length 202 [2023-12-02 19:19:40,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:19:40,872 INFO L495 AbstractCegarLoop]: Abstraction has 762 states and 983 transitions. [2023-12-02 19:19:40,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:19:40,873 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 983 transitions. [2023-12-02 19:19:40,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-02 19:19:40,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:19:40,875 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:19:40,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 19:19:40,876 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:19:40,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:19:40,876 INFO L85 PathProgramCache]: Analyzing trace with hash -355291685, now seen corresponding path program 1 times [2023-12-02 19:19:40,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:19:40,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460047728] [2023-12-02 19:19:40,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:40,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:19:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 393 proven. 95 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-02 19:19:41,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:19:41,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460047728] [2023-12-02 19:19:41,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460047728] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:19:41,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839287372] [2023-12-02 19:19:41,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:41,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:19:41,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:19:41,075 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:19:41,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 19:19:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:41,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:19:41,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:19:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 376 proven. 112 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-02 19:19:41,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:19:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 406 proven. 15 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-12-02 19:19:41,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839287372] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:19:41,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [750290272] [2023-12-02 19:19:41,532 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2023-12-02 19:19:41,533 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:19:41,533 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:19:41,533 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:19:41,534 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:19:51,388 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:20:23,176 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9902#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2023-12-02 19:20:23,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:20:23,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:20:23,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 11 [2023-12-02 19:20:23,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465309615] [2023-12-02 19:20:23,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:20:23,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 19:20:23,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:20:23,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 19:20:23,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=625, Invalid=2797, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 19:20:23,181 INFO L87 Difference]: Start difference. First operand 762 states and 983 transitions. Second operand has 11 states, 11 states have (on average 27.727272727272727) internal successors, (305), 11 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:25,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:25,066 INFO L93 Difference]: Finished difference Result 2989 states and 3983 transitions. [2023-12-02 19:20:25,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 19:20:25,067 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 27.727272727272727) internal successors, (305), 11 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2023-12-02 19:20:25,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:25,076 INFO L225 Difference]: With dead ends: 2989 [2023-12-02 19:20:25,076 INFO L226 Difference]: Without dead ends: 2239 [2023-12-02 19:20:25,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 649 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1783 ImplicationChecksByTransitivity, 32.1s TimeCoverageRelationStatistics Valid=832, Invalid=5020, Unknown=0, NotChecked=0, Total=5852 [2023-12-02 19:20:25,080 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 925 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 2445 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:25,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 1359 Invalid, 2561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2445 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 19:20:25,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2023-12-02 19:20:25,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 1839. [2023-12-02 19:20:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1838 states have (on average 1.2872687704026116) internal successors, (2366), 1838 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2366 transitions. [2023-12-02 19:20:25,122 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2366 transitions. Word has length 229 [2023-12-02 19:20:25,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:25,122 INFO L495 AbstractCegarLoop]: Abstraction has 1839 states and 2366 transitions. [2023-12-02 19:20:25,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 27.727272727272727) internal successors, (305), 11 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:25,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2366 transitions. [2023-12-02 19:20:25,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-02 19:20:25,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:25,127 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2023-12-02 19:20:25,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 19:20:25,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 19:20:25,328 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:25,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:25,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1068676088, now seen corresponding path program 1 times [2023-12-02 19:20:25,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:20:25,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012231368] [2023-12-02 19:20:25,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:25,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:20:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:25,524 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 518 proven. 64 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-12-02 19:20:25,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:20:25,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012231368] [2023-12-02 19:20:25,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012231368] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:20:25,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101248724] [2023-12-02 19:20:25,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:25,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:20:25,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:20:25,526 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:20:25,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 19:20:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:25,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:20:25,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:25,917 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 467 proven. 115 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-12-02 19:20:25,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:20:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 518 proven. 64 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-12-02 19:20:26,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101248724] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:20:26,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [328864855] [2023-12-02 19:20:26,130 INFO L159 IcfgInterpreter]: Started Sifa with 55 locations of interest [2023-12-02 19:20:26,130 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:20:26,131 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:20:26,131 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:20:26,131 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:20:31,461 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:20:44,939 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16537#(and (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (or (and (not (= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 0)) (= |ULTIMATE.start_ssl3_accept_~state~0#1| 8672)) (and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647))' at error location [2023-12-02 19:20:44,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:20:44,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:20:44,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2023-12-02 19:20:44,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91708387] [2023-12-02 19:20:44,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:20:44,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:20:44,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:20:44,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:20:44,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=2592, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 19:20:44,942 INFO L87 Difference]: Start difference. First operand 1839 states and 2366 transitions. Second operand has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:45,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:45,502 INFO L93 Difference]: Finished difference Result 3781 states and 4941 transitions. [2023-12-02 19:20:45,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 19:20:45,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2023-12-02 19:20:45,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:45,512 INFO L225 Difference]: With dead ends: 3781 [2023-12-02 19:20:45,512 INFO L226 Difference]: Without dead ends: 1540 [2023-12-02 19:20:45,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 742 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=617, Invalid=2923, Unknown=0, NotChecked=0, Total=3540 [2023-12-02 19:20:45,516 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 109 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:45,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 669 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:20:45,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2023-12-02 19:20:45,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1461. [2023-12-02 19:20:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 1.2917808219178082) internal successors, (1886), 1460 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:45,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1886 transitions. [2023-12-02 19:20:45,553 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1886 transitions. Word has length 264 [2023-12-02 19:20:45,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:45,553 INFO L495 AbstractCegarLoop]: Abstraction has 1461 states and 1886 transitions. [2023-12-02 19:20:45,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:45,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1886 transitions. [2023-12-02 19:20:45,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-02 19:20:45,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:45,560 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 7, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-02 19:20:45,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 19:20:45,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:20:45,766 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:45,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:45,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1089952143, now seen corresponding path program 1 times [2023-12-02 19:20:45,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:20:45,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322707495] [2023-12-02 19:20:45,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:45,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:20:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 464 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2023-12-02 19:20:45,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:20:45,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322707495] [2023-12-02 19:20:45,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322707495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:45,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:45,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:20:45,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262041642] [2023-12-02 19:20:45,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:45,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:20:45,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:20:45,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:20:45,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:20:45,852 INFO L87 Difference]: Start difference. First operand 1461 states and 1886 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:45,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:45,981 INFO L93 Difference]: Finished difference Result 3098 states and 4062 transitions. [2023-12-02 19:20:45,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:20:45,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2023-12-02 19:20:45,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:45,989 INFO L225 Difference]: With dead ends: 3098 [2023-12-02 19:20:45,989 INFO L226 Difference]: Without dead ends: 1649 [2023-12-02 19:20:45,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:20:45,992 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 14 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:45,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 184 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:20:45,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2023-12-02 19:20:46,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1611. [2023-12-02 19:20:46,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1610 states have (on average 1.2757763975155278) internal successors, (2054), 1610 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:46,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 2054 transitions. [2023-12-02 19:20:46,031 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 2054 transitions. Word has length 273 [2023-12-02 19:20:46,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:46,032 INFO L495 AbstractCegarLoop]: Abstraction has 1611 states and 2054 transitions. [2023-12-02 19:20:46,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:46,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 2054 transitions. [2023-12-02 19:20:46,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-02 19:20:46,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:46,038 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-02 19:20:46,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 19:20:46,039 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:46,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:46,039 INFO L85 PathProgramCache]: Analyzing trace with hash 811336053, now seen corresponding path program 1 times [2023-12-02 19:20:46,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:20:46,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155262158] [2023-12-02 19:20:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:46,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:20:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 593 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2023-12-02 19:20:46,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:20:46,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155262158] [2023-12-02 19:20:46,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155262158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:46,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:46,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:20:46,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668041906] [2023-12-02 19:20:46,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:46,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:20:46,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:20:46,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:20:46,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:20:46,129 INFO L87 Difference]: Start difference. First operand 1611 states and 2054 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:46,246 INFO L93 Difference]: Finished difference Result 3244 states and 4178 transitions. [2023-12-02 19:20:46,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:20:46,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 295 [2023-12-02 19:20:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:46,254 INFO L225 Difference]: With dead ends: 3244 [2023-12-02 19:20:46,254 INFO L226 Difference]: Without dead ends: 1645 [2023-12-02 19:20:46,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:20:46,257 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 7 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:46,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 184 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:20:46,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2023-12-02 19:20:46,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1428. [2023-12-02 19:20:46,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 1.258584442887176) internal successors, (1796), 1427 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1796 transitions. [2023-12-02 19:20:46,293 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1796 transitions. Word has length 295 [2023-12-02 19:20:46,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:46,293 INFO L495 AbstractCegarLoop]: Abstraction has 1428 states and 1796 transitions. [2023-12-02 19:20:46,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:46,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1796 transitions. [2023-12-02 19:20:46,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-12-02 19:20:46,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:46,300 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 9, 8, 8, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-02 19:20:46,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 19:20:46,300 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:46,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:46,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1998344417, now seen corresponding path program 1 times [2023-12-02 19:20:46,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:20:46,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863764451] [2023-12-02 19:20:46,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:46,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:20:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 651 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2023-12-02 19:20:46,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:20:46,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863764451] [2023-12-02 19:20:46,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863764451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:46,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:46,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:20:46,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648287832] [2023-12-02 19:20:46,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:46,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:20:46,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:20:46,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:20:46,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:20:46,431 INFO L87 Difference]: Start difference. First operand 1428 states and 1796 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:46,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:46,534 INFO L93 Difference]: Finished difference Result 3980 states and 4984 transitions. [2023-12-02 19:20:46,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:20:46,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 326 [2023-12-02 19:20:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:46,547 INFO L225 Difference]: With dead ends: 3980 [2023-12-02 19:20:46,547 INFO L226 Difference]: Without dead ends: 2700 [2023-12-02 19:20:46,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:20:46,550 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 100 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:46,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 361 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:20:46,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-12-02 19:20:46,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2634. [2023-12-02 19:20:46,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2634 states, 2633 states have (on average 1.2559817698442841) internal successors, (3307), 2633 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:46,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 3307 transitions. [2023-12-02 19:20:46,630 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 3307 transitions. Word has length 326 [2023-12-02 19:20:46,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:46,630 INFO L495 AbstractCegarLoop]: Abstraction has 2634 states and 3307 transitions. [2023-12-02 19:20:46,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:46,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 3307 transitions. [2023-12-02 19:20:46,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-12-02 19:20:46,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:46,637 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 9, 8, 8, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-02 19:20:46,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 19:20:46,637 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:46,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:46,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1552095638, now seen corresponding path program 1 times [2023-12-02 19:20:46,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:20:46,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742967823] [2023-12-02 19:20:46,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:46,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:20:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 828 proven. 25 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2023-12-02 19:20:46,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:20:46,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742967823] [2023-12-02 19:20:46,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742967823] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:20:46,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614143839] [2023-12-02 19:20:46,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:46,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:20:46,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:20:46,796 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:20:46,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 19:20:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:46,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:20:46,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 524 proven. 253 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2023-12-02 19:20:47,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:20:47,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 642 proven. 135 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2023-12-02 19:20:47,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614143839] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:20:47,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [434571417] [2023-12-02 19:20:47,553 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2023-12-02 19:20:47,553 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:20:47,554 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:20:47,554 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:20:47,554 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:20:55,318 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:21:08,031 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '40424#(and (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (or (and (not (= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 0)) (= |ULTIMATE.start_ssl3_accept_~state~0#1| 8672)) (and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647))' at error location [2023-12-02 19:21:08,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:21:08,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:21:08,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 8 [2023-12-02 19:21:08,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665501562] [2023-12-02 19:21:08,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:21:08,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 19:21:08,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:21:08,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 19:21:08,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=892, Invalid=3800, Unknown=0, NotChecked=0, Total=4692 [2023-12-02 19:21:08,036 INFO L87 Difference]: Start difference. First operand 2634 states and 3307 transitions. Second operand has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:21:09,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:21:09,146 INFO L93 Difference]: Finished difference Result 8008 states and 10315 transitions. [2023-12-02 19:21:09,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 19:21:09,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 327 [2023-12-02 19:21:09,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:21:09,165 INFO L225 Difference]: With dead ends: 8008 [2023-12-02 19:21:09,165 INFO L226 Difference]: Without dead ends: 5412 [2023-12-02 19:21:09,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1005 GetRequests, 927 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2134 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=986, Invalid=5334, Unknown=0, NotChecked=0, Total=6320 [2023-12-02 19:21:09,171 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 393 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:21:09,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 1337 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 19:21:09,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5412 states. [2023-12-02 19:21:09,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5412 to 4335. [2023-12-02 19:21:09,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4335 states, 4334 states have (on average 1.3084910013844024) internal successors, (5671), 4334 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:21:09,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4335 states to 4335 states and 5671 transitions. [2023-12-02 19:21:09,262 INFO L78 Accepts]: Start accepts. Automaton has 4335 states and 5671 transitions. Word has length 327 [2023-12-02 19:21:09,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:21:09,262 INFO L495 AbstractCegarLoop]: Abstraction has 4335 states and 5671 transitions. [2023-12-02 19:21:09,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:21:09,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4335 states and 5671 transitions. [2023-12-02 19:21:09,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-12-02 19:21:09,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:21:09,270 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 14, 14, 14, 13, 12, 10, 10, 8, 8, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2023-12-02 19:21:09,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 19:21:09,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:21:09,470 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:21:09,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:21:09,471 INFO L85 PathProgramCache]: Analyzing trace with hash -17046760, now seen corresponding path program 2 times [2023-12-02 19:21:09,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:21:09,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525795383] [2023-12-02 19:21:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:21:09,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:21:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:21:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2281 backedges. 1272 proven. 12 refuted. 0 times theorem prover too weak. 997 trivial. 0 not checked. [2023-12-02 19:21:09,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:21:09,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525795383] [2023-12-02 19:21:09,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525795383] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:21:09,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553057017] [2023-12-02 19:21:09,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:21:09,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:21:09,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:21:09,652 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:21:09,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 19:21:09,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-02 19:21:09,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:21:09,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:21:09,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:21:09,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2281 backedges. 767 proven. 12 refuted. 0 times theorem prover too weak. 1502 trivial. 0 not checked. [2023-12-02 19:21:09,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:21:09,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2281 backedges. 767 proven. 12 refuted. 0 times theorem prover too weak. 1502 trivial. 0 not checked. [2023-12-02 19:21:09,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553057017] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:21:09,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1074609515] [2023-12-02 19:21:09,846 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2023-12-02 19:21:09,846 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:21:09,847 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:21:09,847 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:21:09,847 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:21:17,817 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:21:31,445 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '55716#(and (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (or (and (not (= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 0)) (= |ULTIMATE.start_ssl3_accept_~state~0#1| 8672)) (and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~ag_Y~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647))' at error location [2023-12-02 19:21:31,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:21:31,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:21:31,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-12-02 19:21:31,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592523159] [2023-12-02 19:21:31,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:21:31,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:21:31,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:21:31,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:21:31,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=877, Invalid=3545, Unknown=0, NotChecked=0, Total=4422 [2023-12-02 19:21:31,450 INFO L87 Difference]: Start difference. First operand 4335 states and 5671 transitions. Second operand has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:21:32,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:21:32,026 INFO L93 Difference]: Finished difference Result 13152 states and 17302 transitions. [2023-12-02 19:21:32,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 19:21:32,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 414 [2023-12-02 19:21:32,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:21:32,061 INFO L225 Difference]: With dead ends: 13152 [2023-12-02 19:21:32,062 INFO L226 Difference]: Without dead ends: 8576 [2023-12-02 19:21:32,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1252 GetRequests, 1183 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1614 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=902, Invalid=4068, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 19:21:32,070 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 382 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:21:32,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 755 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:21:32,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8576 states. [2023-12-02 19:21:32,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8576 to 5982. [2023-12-02 19:21:32,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5982 states, 5981 states have (on average 1.2723624811904364) internal successors, (7610), 5981 states have internal predecessors, (7610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:21:32,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5982 states to 5982 states and 7610 transitions. [2023-12-02 19:21:32,216 INFO L78 Accepts]: Start accepts. Automaton has 5982 states and 7610 transitions. Word has length 414 [2023-12-02 19:21:32,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:21:32,216 INFO L495 AbstractCegarLoop]: Abstraction has 5982 states and 7610 transitions. [2023-12-02 19:21:32,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:21:32,217 INFO L276 IsEmpty]: Start isEmpty. Operand 5982 states and 7610 transitions. [2023-12-02 19:21:32,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-12-02 19:21:32,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:21:32,226 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 15, 14, 12, 12, 10, 10, 8, 8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 19:21:32,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 19:21:32,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:21:32,427 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:21:32,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:21:32,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1055657448, now seen corresponding path program 1 times [2023-12-02 19:21:32,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:21:32,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941345971] [2023-12-02 19:21:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:21:32,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:21:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:21:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2553 backedges. 1481 proven. 0 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2023-12-02 19:21:32,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:21:32,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941345971] [2023-12-02 19:21:32,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941345971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:21:32,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:21:32,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:21:32,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026015112] [2023-12-02 19:21:32,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:21:32,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:21:32,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:21:32,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:21:32,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:21:32,541 INFO L87 Difference]: Start difference. First operand 5982 states and 7610 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:21:32,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:21:32,767 INFO L93 Difference]: Finished difference Result 12734 states and 16128 transitions. [2023-12-02 19:21:32,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:21:32,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 446 [2023-12-02 19:21:32,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:21:32,785 INFO L225 Difference]: With dead ends: 12734 [2023-12-02 19:21:32,786 INFO L226 Difference]: Without dead ends: 6764 [2023-12-02 19:21:32,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:21:32,793 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 7 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:21:32,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 184 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:21:32,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6764 states. [2023-12-02 19:21:32,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6764 to 6718. [2023-12-02 19:21:32,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6718 states, 6717 states have (on average 1.2527914247431888) internal successors, (8415), 6717 states have internal predecessors, (8415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:21:32,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6718 states to 6718 states and 8415 transitions. [2023-12-02 19:21:32,922 INFO L78 Accepts]: Start accepts. Automaton has 6718 states and 8415 transitions. Word has length 446 [2023-12-02 19:21:32,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:21:32,923 INFO L495 AbstractCegarLoop]: Abstraction has 6718 states and 8415 transitions. [2023-12-02 19:21:32,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:21:32,923 INFO L276 IsEmpty]: Start isEmpty. Operand 6718 states and 8415 transitions. [2023-12-02 19:21:32,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2023-12-02 19:21:32,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:21:32,937 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 16, 16, 15, 14, 12, 12, 10, 10, 8, 8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 19:21:32,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 19:21:32,937 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:21:32,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:21:32,938 INFO L85 PathProgramCache]: Analyzing trace with hash -20734408, now seen corresponding path program 1 times [2023-12-02 19:21:32,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:21:32,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59651221] [2023-12-02 19:21:32,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:21:32,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:21:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:21:33,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3007 backedges. 1598 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2023-12-02 19:21:33,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:21:33,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59651221] [2023-12-02 19:21:33,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59651221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:21:33,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:21:33,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:21:33,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407052550] [2023-12-02 19:21:33,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:21:33,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:21:33,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:21:33,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:21:33,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:21:33,097 INFO L87 Difference]: Start difference. First operand 6718 states and 8415 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:21:33,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:21:33,305 INFO L93 Difference]: Finished difference Result 13470 states and 16864 transitions. [2023-12-02 19:21:33,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:21:33,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 474 [2023-12-02 19:21:33,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:21:33,315 INFO L225 Difference]: With dead ends: 13470 [2023-12-02 19:21:33,315 INFO L226 Difference]: Without dead ends: 6764 [2023-12-02 19:21:33,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:21:33,322 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 8 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:21:33,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 185 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:21:33,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6764 states. [2023-12-02 19:21:33,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6764 to 6718. [2023-12-02 19:21:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6718 states, 6717 states have (on average 1.2425189816882536) internal successors, (8346), 6717 states have internal predecessors, (8346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:21:33,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6718 states to 6718 states and 8346 transitions. [2023-12-02 19:21:33,451 INFO L78 Accepts]: Start accepts. Automaton has 6718 states and 8346 transitions. Word has length 474 [2023-12-02 19:21:33,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:21:33,452 INFO L495 AbstractCegarLoop]: Abstraction has 6718 states and 8346 transitions. [2023-12-02 19:21:33,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:21:33,452 INFO L276 IsEmpty]: Start isEmpty. Operand 6718 states and 8346 transitions. [2023-12-02 19:21:33,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2023-12-02 19:21:33,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:21:33,467 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 16, 15, 14, 12, 12, 10, 10, 8, 8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 19:21:33,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 19:21:33,467 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:21:33,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:21:33,468 INFO L85 PathProgramCache]: Analyzing trace with hash -2091078006, now seen corresponding path program 1 times [2023-12-02 19:21:33,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:21:33,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483435939] [2023-12-02 19:21:33,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:21:33,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:21:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:21:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 1644 proven. 193 refuted. 0 times theorem prover too weak. 1203 trivial. 0 not checked. [2023-12-02 19:21:33,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:21:33,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483435939] [2023-12-02 19:21:33,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483435939] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:21:33,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100203344] [2023-12-02 19:21:33,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:21:33,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:21:33,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:21:33,809 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:21:33,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 19:21:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:21:34,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:21:34,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:21:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 1693 proven. 226 refuted. 0 times theorem prover too weak. 1121 trivial. 0 not checked. [2023-12-02 19:21:35,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:21:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 1782 proven. 137 refuted. 0 times theorem prover too weak. 1121 trivial. 0 not checked. [2023-12-02 19:21:35,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100203344] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:21:35,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [418155735] [2023-12-02 19:21:35,814 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2023-12-02 19:21:35,814 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:21:35,814 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:21:35,814 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:21:35,814 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:21:54,712 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:21:58,323 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '119278#(and (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647))' at error location [2023-12-02 19:21:58,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:21:58,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:21:58,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-12-02 19:21:58,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971198061] [2023-12-02 19:21:58,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:21:58,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 19:21:58,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:21:58,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 19:21:58,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1073, Invalid=4329, Unknown=0, NotChecked=0, Total=5402 [2023-12-02 19:21:58,327 INFO L87 Difference]: Start difference. First operand 6718 states and 8346 transitions. Second operand has 11 states, 11 states have (on average 34.36363636363637) internal successors, (378), 11 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:22:00,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:22:00,470 INFO L93 Difference]: Finished difference Result 34280 states and 44177 transitions. [2023-12-02 19:22:00,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 19:22:00,470 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 34.36363636363637) internal successors, (378), 11 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 476 [2023-12-02 19:22:00,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:22:00,508 INFO L225 Difference]: With dead ends: 34280 [2023-12-02 19:22:00,508 INFO L226 Difference]: Without dead ends: 27175 [2023-12-02 19:22:00,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1459 GetRequests, 1372 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3195 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1254, Invalid=6578, Unknown=0, NotChecked=0, Total=7832 [2023-12-02 19:22:00,520 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1067 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:22:00,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 932 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 1608 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 19:22:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27175 states. [2023-12-02 19:22:01,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27175 to 25793. [2023-12-02 19:22:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25793 states, 25792 states have (on average 1.26073976426799) internal successors, (32517), 25792 states have internal predecessors, (32517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:22:01,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25793 states to 25793 states and 32517 transitions. [2023-12-02 19:22:01,091 INFO L78 Accepts]: Start accepts. Automaton has 25793 states and 32517 transitions. Word has length 476 [2023-12-02 19:22:01,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:22:01,091 INFO L495 AbstractCegarLoop]: Abstraction has 25793 states and 32517 transitions. [2023-12-02 19:22:01,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 34.36363636363637) internal successors, (378), 11 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:22:01,092 INFO L276 IsEmpty]: Start isEmpty. Operand 25793 states and 32517 transitions. [2023-12-02 19:22:01,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2023-12-02 19:22:01,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:22:01,125 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 18, 18, 16, 14, 14, 12, 12, 10, 10, 10, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 19:22:01,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 19:22:01,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 19:22:01,326 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:22:01,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:22:01,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1130148384, now seen corresponding path program 1 times [2023-12-02 19:22:01,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:22:01,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850449502] [2023-12-02 19:22:01,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:22:01,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:22:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:22:01,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 2178 proven. 360 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2023-12-02 19:22:01,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:22:01,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850449502] [2023-12-02 19:22:01,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850449502] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:22:01,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626597934] [2023-12-02 19:22:01,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:22:01,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:22:01,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:22:01,789 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:22:01,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 19:22:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:22:01,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:22:01,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:22:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 2178 proven. 360 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2023-12-02 19:22:02,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:22:04,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 2341 proven. 197 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2023-12-02 19:22:04,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626597934] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:22:04,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [692907148] [2023-12-02 19:22:04,044 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2023-12-02 19:22:04,044 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:22:04,044 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:22:04,044 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:22:04,044 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:22:22,106 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:22:26,010 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '184498#(and (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647))' at error location [2023-12-02 19:22:26,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:22:26,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:22:26,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-12-02 19:22:26,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906686978] [2023-12-02 19:22:26,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:22:26,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 19:22:26,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:22:26,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 19:22:26,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=4314, Unknown=0, NotChecked=0, Total=5402 [2023-12-02 19:22:26,015 INFO L87 Difference]: Start difference. First operand 25793 states and 32517 transitions. Second operand has 11 states, 11 states have (on average 42.81818181818182) internal successors, (471), 11 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:22:29,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:22:29,270 INFO L93 Difference]: Finished difference Result 102078 states and 128660 transitions. [2023-12-02 19:22:29,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-02 19:22:29,271 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 42.81818181818182) internal successors, (471), 11 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 543 [2023-12-02 19:22:29,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:22:29,371 INFO L225 Difference]: With dead ends: 102078 [2023-12-02 19:22:29,371 INFO L226 Difference]: Without dead ends: 71854 [2023-12-02 19:22:29,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1666 GetRequests, 1573 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3754 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1388, Invalid=7542, Unknown=0, NotChecked=0, Total=8930 [2023-12-02 19:22:29,412 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 803 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 2656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 2298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:22:29,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1052 Invalid, 2656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 2298 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 19:22:29,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71854 states. [2023-12-02 19:22:30,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71854 to 36149. [2023-12-02 19:22:30,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36149 states, 36148 states have (on average 1.2539282947880934) internal successors, (45327), 36148 states have internal predecessors, (45327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:22:30,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36149 states to 36149 states and 45327 transitions. [2023-12-02 19:22:30,538 INFO L78 Accepts]: Start accepts. Automaton has 36149 states and 45327 transitions. Word has length 543 [2023-12-02 19:22:30,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:22:30,539 INFO L495 AbstractCegarLoop]: Abstraction has 36149 states and 45327 transitions. [2023-12-02 19:22:30,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 42.81818181818182) internal successors, (471), 11 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:22:30,539 INFO L276 IsEmpty]: Start isEmpty. Operand 36149 states and 45327 transitions. [2023-12-02 19:22:30,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2023-12-02 19:22:30,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:22:30,578 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 19, 18, 16, 16, 14, 14, 12, 12, 12, 12, 9, 7, 7, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 19:22:30,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 19:22:30,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 19:22:30,779 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:22:30,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:22:30,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1381242120, now seen corresponding path program 1 times [2023-12-02 19:22:30,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:22:30,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586494871] [2023-12-02 19:22:30,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:22:30,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:22:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:22:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4217 backedges. 2291 proven. 0 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2023-12-02 19:22:30,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:22:30,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586494871] [2023-12-02 19:22:30,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586494871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:22:30,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:22:30,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:22:30,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303853188] [2023-12-02 19:22:30,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:22:30,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:22:30,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:22:30,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:22:30,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:22:30,928 INFO L87 Difference]: Start difference. First operand 36149 states and 45327 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:22:31,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:22:31,576 INFO L93 Difference]: Finished difference Result 72128 states and 90228 transitions. [2023-12-02 19:22:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:22:31,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 574 [2023-12-02 19:22:31,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:22:31,603 INFO L225 Difference]: With dead ends: 72128 [2023-12-02 19:22:31,603 INFO L226 Difference]: Without dead ends: 36029 [2023-12-02 19:22:31,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:22:31,620 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 7 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:22:31,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 184 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:22:31,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36029 states. [2023-12-02 19:22:32,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36029 to 35789. [2023-12-02 19:22:32,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35789 states, 35788 states have (on average 1.2330110651615067) internal successors, (44127), 35788 states have internal predecessors, (44127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:22:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35789 states to 35789 states and 44127 transitions. [2023-12-02 19:22:32,396 INFO L78 Accepts]: Start accepts. Automaton has 35789 states and 44127 transitions. Word has length 574 [2023-12-02 19:22:32,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:22:32,396 INFO L495 AbstractCegarLoop]: Abstraction has 35789 states and 44127 transitions. [2023-12-02 19:22:32,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:22:32,397 INFO L276 IsEmpty]: Start isEmpty. Operand 35789 states and 44127 transitions. [2023-12-02 19:22:32,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2023-12-02 19:22:32,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:22:32,423 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 19, 19, 17, 15, 15, 13, 13, 11, 11, 11, 11, 8, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 19:22:32,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-02 19:22:32,423 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:22:32,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:22:32,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1794650213, now seen corresponding path program 1 times [2023-12-02 19:22:32,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:22:32,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314459504] [2023-12-02 19:22:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:22:32,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:22:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:22:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4378 backedges. 1058 proven. 44 refuted. 0 times theorem prover too weak. 3276 trivial. 0 not checked. [2023-12-02 19:22:32,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:22:32,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314459504] [2023-12-02 19:22:32,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314459504] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:22:32,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020119817] [2023-12-02 19:22:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:22:32,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:22:32,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:22:32,802 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:22:32,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 19:22:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:22:32,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:22:32,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:22:33,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4378 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 3899 trivial. 0 not checked. [2023-12-02 19:22:33,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:22:33,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020119817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:22:33,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:22:33,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-12-02 19:22:33,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43676775] [2023-12-02 19:22:33,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:22:33,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:22:33,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:22:33,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:22:33,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:22:33,054 INFO L87 Difference]: Start difference. First operand 35789 states and 44127 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:22:33,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:22:33,620 INFO L93 Difference]: Finished difference Result 62426 states and 76996 transitions. [2023-12-02 19:22:33,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:22:33,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 579 [2023-12-02 19:22:33,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:22:33,643 INFO L225 Difference]: With dead ends: 62426 [2023-12-02 19:22:33,643 INFO L226 Difference]: Without dead ends: 26617 [2023-12-02 19:22:33,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:22:33,659 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 9 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:22:33,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 242 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:22:33,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26617 states. [2023-12-02 19:22:34,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26617 to 18233. [2023-12-02 19:22:34,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18233 states, 18232 states have (on average 1.1909828872312418) internal successors, (21714), 18232 states have internal predecessors, (21714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:22:34,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18233 states to 18233 states and 21714 transitions. [2023-12-02 19:22:34,083 INFO L78 Accepts]: Start accepts. Automaton has 18233 states and 21714 transitions. Word has length 579 [2023-12-02 19:22:34,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:22:34,083 INFO L495 AbstractCegarLoop]: Abstraction has 18233 states and 21714 transitions. [2023-12-02 19:22:34,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:22:34,084 INFO L276 IsEmpty]: Start isEmpty. Operand 18233 states and 21714 transitions. [2023-12-02 19:22:34,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2023-12-02 19:22:34,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:22:34,102 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 19, 19, 17, 15, 15, 13, 13, 11, 11, 11, 11, 7, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 19:22:34,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 19:22:34,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-12-02 19:22:34,303 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:22:34,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:22:34,303 INFO L85 PathProgramCache]: Analyzing trace with hash 566113662, now seen corresponding path program 2 times [2023-12-02 19:22:34,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:22:34,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192542803] [2023-12-02 19:22:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:22:34,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:22:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:22:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4368 backedges. 1921 proven. 74 refuted. 0 times theorem prover too weak. 2373 trivial. 0 not checked. [2023-12-02 19:22:34,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:22:34,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192542803] [2023-12-02 19:22:34,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192542803] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:22:34,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527705520] [2023-12-02 19:22:34,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:22:34,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:22:34,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:22:34,855 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:22:34,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 19:22:34,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-02 19:22:34,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:22:34,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 19:22:34,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:22:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4368 backedges. 2552 proven. 49 refuted. 0 times theorem prover too weak. 1767 trivial. 0 not checked. [2023-12-02 19:22:35,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:22:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4368 backedges. 2552 proven. 49 refuted. 0 times theorem prover too weak. 1767 trivial. 0 not checked. [2023-12-02 19:22:35,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527705520] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:22:35,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1956255722] [2023-12-02 19:22:35,405 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2023-12-02 19:22:35,406 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:22:35,406 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:22:35,406 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:22:35,406 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:22:50,855 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:22:54,059 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '526308#(and (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8672) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647))' at error location [2023-12-02 19:22:54,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:22:54,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:22:54,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-12-02 19:22:54,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417038122] [2023-12-02 19:22:54,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:22:54,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 19:22:54,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:22:54,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 19:22:54,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1068, Invalid=4334, Unknown=0, NotChecked=0, Total=5402 [2023-12-02 19:22:54,061 INFO L87 Difference]: Start difference. First operand 18233 states and 21714 transitions. Second operand has 11 states, 11 states have (on average 30.727272727272727) internal successors, (338), 11 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:22:55,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:22:55,431 INFO L93 Difference]: Finished difference Result 34156 states and 40607 transitions. [2023-12-02 19:22:55,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 19:22:55,431 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 30.727272727272727) internal successors, (338), 11 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 581 [2023-12-02 19:22:55,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:22:55,432 INFO L225 Difference]: With dead ends: 34156 [2023-12-02 19:22:55,432 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 19:22:55,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1779 GetRequests, 1692 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3105 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1247, Invalid=6585, Unknown=0, NotChecked=0, Total=7832 [2023-12-02 19:22:55,440 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1013 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 1731 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 1897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:22:55,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1195 Invalid, 1897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 19:22:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 19:22:55,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 19:22:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:22:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 19:22:55,441 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 581 [2023-12-02 19:22:55,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:22:55,442 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 19:22:55,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 30.727272727272727) internal successors, (338), 11 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:22:55,442 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 19:22:55,442 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 19:22:55,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 19:22:55,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 19:22:55,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-02 19:22:55,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 19:23:52,218 WARN L293 SmtUtils]: Spent 56.56s on a formula simplification. DAG size of input: 1394 DAG size of output: 1264 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 19:24:04,771 WARN L293 SmtUtils]: Spent 12.53s on a formula simplification. DAG size of input: 1264 DAG size of output: 147 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-12-02 19:24:04,775 INFO L899 garLoopResultBuilder]: For program point L366(lines 366 397) no Hoare annotation was computed. [2023-12-02 19:24:04,775 INFO L899 garLoopResultBuilder]: For program point L267(lines 267 272) no Hoare annotation was computed. [2023-12-02 19:24:04,776 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 607) no Hoare annotation was computed. [2023-12-02 19:24:04,776 INFO L899 garLoopResultBuilder]: For program point L168(lines 168 618) no Hoare annotation was computed. [2023-12-02 19:24:04,776 INFO L899 garLoopResultBuilder]: For program point L135(lines 135 629) no Hoare annotation was computed. [2023-12-02 19:24:04,776 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8593#1(lines 186 612) no Hoare annotation was computed. [2023-12-02 19:24:04,776 INFO L899 garLoopResultBuilder]: For program point L532(lines 532 537) no Hoare annotation was computed. [2023-12-02 19:24:04,776 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8529#1(lines 159 621) no Hoare annotation was computed. [2023-12-02 19:24:04,776 INFO L899 garLoopResultBuilder]: For program point L566(lines 566 570) no Hoare annotation was computed. [2023-12-02 19:24:04,776 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8497#1(lines 147 625) no Hoare annotation was computed. [2023-12-02 19:24:04,777 INFO L899 garLoopResultBuilder]: For program point L302-2(lines 221 598) no Hoare annotation was computed. [2023-12-02 19:24:04,777 INFO L899 garLoopResultBuilder]: For program point L369(lines 369 396) no Hoare annotation was computed. [2023-12-02 19:24:04,777 INFO L899 garLoopResultBuilder]: For program point L369-1(lines 369 396) no Hoare annotation was computed. [2023-12-02 19:24:04,777 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 606) no Hoare annotation was computed. [2023-12-02 19:24:04,777 INFO L899 garLoopResultBuilder]: For program point L171(lines 171 617) no Hoare annotation was computed. [2023-12-02 19:24:04,777 INFO L899 garLoopResultBuilder]: For program point L138(lines 138 628) no Hoare annotation was computed. [2023-12-02 19:24:04,777 INFO L899 garLoopResultBuilder]: For program point L370(lines 370 393) no Hoare annotation was computed. [2023-12-02 19:24:04,778 INFO L899 garLoopResultBuilder]: For program point L668(lines 76 685) no Hoare annotation was computed. [2023-12-02 19:24:04,778 INFO L899 garLoopResultBuilder]: For program point L405(lines 405 436) no Hoare annotation was computed. [2023-12-02 19:24:04,778 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 605) no Hoare annotation was computed. [2023-12-02 19:24:04,778 INFO L899 garLoopResultBuilder]: For program point L174(lines 174 616) no Hoare annotation was computed. [2023-12-02 19:24:04,778 INFO L899 garLoopResultBuilder]: For program point L141(lines 141 627) no Hoare annotation was computed. [2023-12-02 19:24:04,778 INFO L899 garLoopResultBuilder]: For program point L637(lines 637 665) no Hoare annotation was computed. [2023-12-02 19:24:04,778 INFO L899 garLoopResultBuilder]: For program point L406(lines 406 412) no Hoare annotation was computed. [2023-12-02 19:24:04,778 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 392) no Hoare annotation was computed. [2023-12-02 19:24:04,779 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 258) no Hoare annotation was computed. [2023-12-02 19:24:04,779 INFO L899 garLoopResultBuilder]: For program point L241-2(lines 221 598) no Hoare annotation was computed. [2023-12-02 19:24:04,779 INFO L899 garLoopResultBuilder]: For program point L638(lines 638 662) no Hoare annotation was computed. [2023-12-02 19:24:04,779 INFO L899 garLoopResultBuilder]: For program point L506(lines 506 510) no Hoare annotation was computed. [2023-12-02 19:24:04,779 INFO L899 garLoopResultBuilder]: For program point L539-2(lines 221 598) no Hoare annotation was computed. [2023-12-02 19:24:04,779 INFO L899 garLoopResultBuilder]: For program point L374-2(lines 373 390) no Hoare annotation was computed. [2023-12-02 19:24:04,779 INFO L899 garLoopResultBuilder]: For program point L639(lines 639 648) no Hoare annotation was computed. [2023-12-02 19:24:04,780 INFO L899 garLoopResultBuilder]: For program point L639-2(lines 638 660) no Hoare annotation was computed. [2023-12-02 19:24:04,780 INFO L899 garLoopResultBuilder]: For program point L474(lines 474 478) no Hoare annotation was computed. [2023-12-02 19:24:04,780 INFO L899 garLoopResultBuilder]: For program point L342-1(lines 342 351) no Hoare annotation was computed. [2023-12-02 19:24:04,780 INFO L899 garLoopResultBuilder]: For program point L243(lines 243 248) no Hoare annotation was computed. [2023-12-02 19:24:04,780 INFO L899 garLoopResultBuilder]: For program point L210(lines 210 604) no Hoare annotation was computed. [2023-12-02 19:24:04,780 INFO L899 garLoopResultBuilder]: For program point L177(lines 177 615) no Hoare annotation was computed. [2023-12-02 19:24:04,780 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 626) no Hoare annotation was computed. [2023-12-02 19:24:04,781 INFO L895 garLoopResultBuilder]: At program point L111-2(lines 111 667) the Hoare annotation is: (let ((.cse38 (+ |ULTIMATE.start_ssl3_accept_~ag_X~0#1| |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|))) (let ((.cse41 (div .cse38 2147483648))) (let ((.cse39 (* .cse41 4294967296)) (.cse40 (+ (* 2 |ULTIMATE.start_ssl3_accept_~ag_X~0#1|) (* 2 |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|))) (.cse14 (mod .cse38 2147483648))) (let ((.cse36 (< 1073741823 .cse14)) (.cse9 (= 0 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (.cse24 (= 8496 |ULTIMATE.start_ssl3_accept_~s__state~0#1|)) (.cse35 (= (+ .cse39 |ULTIMATE.start_ssl3_accept_~s__state~0#1|) .cse40)) (.cse37 (* .cse41 2147483648)) (.cse23 (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8656)) (.cse16 (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 3))) (let ((.cse26 (= 8544 |ULTIMATE.start_ssl3_accept_~s__state~0#1|)) (.cse15 (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8608)) (.cse27 (or .cse23 .cse16)) (.cse5 (= 8560 |ULTIMATE.start_ssl3_accept_~s__state~0#1|)) (.cse2 (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8640)) (.cse18 (or .cse35 (and (<= (+ 1073741824 .cse37) .cse38) (= (+ .cse39 |ULTIMATE.start_ssl3_accept_~s__state~0#1| 4294967296) .cse40)))) (.cse19 (= 3 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1|)) (.cse22 (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8592)) (.cse17 (<= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8496)) (.cse31 (<= 8465 |ULTIMATE.start_ssl3_accept_~s__state~0#1|)) (.cse7 (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 8496)) (.cse10 (<= 8465 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1|)) (.cse29 (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8528)) (.cse32 (not .cse24)) (.cse28 (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8512)) (.cse30 (<= 8672 |ULTIMATE.start_ssl3_accept_~s__state~0#1|)) (.cse12 (= 8466 |ULTIMATE.start_ssl3_accept_~s__state~0#1|)) (.cse25 (= (+ .cse37 4248) .cse38)) (.cse1 (not (= 8496 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1|))) (.cse20 (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 8576)) (.cse21 (not (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 4))) (.cse33 (= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 8640)) (.cse3 (not .cse9)) (.cse6 (= 2 |ULTIMATE.start_ssl3_accept_~blastFlag~0#1|)) (.cse8 (<= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8448)) (.cse11 (or .cse36 (< .cse14 4249))) (.cse4 (or (< .cse14 4328) .cse36)) (.cse0 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 1)) (.cse13 (= 8576 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1|)) (.cse34 (= 8576 |ULTIMATE.start_ssl3_accept_~s__state~0#1|))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse0) (and .cse6 .cse7 .cse8 .cse1 .cse9 .cse10 .cse11) (and .cse12 .cse6 .cse13 .cse9 .cse11) (and .cse4 .cse0 .cse13 .cse8) (and .cse12 .cse0 (<= 4329 .cse14) .cse1 .cse3) (and .cse4 .cse0 .cse15) (and .cse16 .cse1) (and .cse5 .cse0 .cse3) (and .cse17 .cse6 .cse13 .cse9 .cse18) (and .cse0 .cse15 .cse1 .cse3) (and (= 8464 |ULTIMATE.start_ssl3_accept_~s__state~0#1|) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 0)) (and .cse0 .cse8 .cse19 .cse9) (and .cse0 .cse11) (and .cse0 .cse8 .cse1 .cse20 .cse10 .cse3) (and .cse21 .cse1 .cse9 .cse22 .cse20 .cse11) (and .cse21 .cse1 .cse9 .cse20 .cse2 .cse11) (and .cse23 .cse6 .cse3) (and .cse24 .cse6 .cse25 .cse1 .cse9 .cse20) (and .cse6 .cse9 .cse11 .cse26) (and .cse27 .cse4 .cse0) (and .cse0 .cse3 .cse26) (and .cse4 .cse0 .cse2) (and .cse4 .cse0 .cse26) (and .cse6 .cse28 .cse9 .cse11) (and .cse21 .cse15 .cse1 .cse9 .cse20 .cse11) (and .cse6 .cse16) (and .cse29 .cse6 .cse9 .cse11) (and .cse30 .cse0) (and .cse0 .cse16) (and .cse4 .cse12 .cse0) (and .cse27 .cse21 .cse1 .cse9 .cse20 .cse11) (and .cse6 .cse5 .cse9 .cse11) (and .cse29 .cse4 .cse0) (and .cse31 .cse0 .cse32 .cse1 .cse20 .cse10 .cse3 (<= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8576)) (and .cse21 .cse33 .cse2 .cse3) (and .cse6 .cse13 .cse34 .cse9 .cse11) (and .cse4 .cse0 .cse22) (and .cse17 .cse6 .cse7 .cse1 .cse9 .cse18 .cse10) (and .cse21 .cse8 .cse19 .cse9 .cse11) (and .cse0 .cse35) (and .cse0 .cse1 .cse22 .cse3) (and .cse17 .cse6 .cse31 .cse7 .cse32 .cse1 .cse9 .cse10 .cse11) (and .cse29 .cse0 .cse3) (and .cse30 .cse21 .cse3) (and .cse0 (<= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8640) .cse32 .cse33 (not .cse28) .cse3) (and .cse30 .cse21 .cse20 .cse11) (and .cse12 .cse6 .cse25 .cse1 .cse9 .cse20) (and .cse21 .cse8 .cse33 .cse3) (and .cse6 .cse13 .cse8 .cse9 .cse11) (and .cse4 .cse0 .cse13 .cse34))))))) [2023-12-02 19:24:04,781 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8481#1(lines 129 631) no Hoare annotation was computed. [2023-12-02 19:24:04,781 INFO L899 garLoopResultBuilder]: For program point L641(lines 641 645) no Hoare annotation was computed. [2023-12-02 19:24:04,781 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 603) no Hoare annotation was computed. [2023-12-02 19:24:04,781 INFO L899 garLoopResultBuilder]: For program point L180(lines 180 614) no Hoare annotation was computed. [2023-12-02 19:24:04,781 INFO L899 garLoopResultBuilder]: For program point L147(lines 147 625) no Hoare annotation was computed. [2023-12-02 19:24:04,781 INFO L899 garLoopResultBuilder]: For program point L114(lines 114 636) no Hoare annotation was computed. [2023-12-02 19:24:04,781 INFO L899 garLoopResultBuilder]: For program point L346(lines 346 350) no Hoare annotation was computed. [2023-12-02 19:24:04,781 INFO L899 garLoopResultBuilder]: For program point L479(lines 479 490) no Hoare annotation was computed. [2023-12-02 19:24:04,781 INFO L899 garLoopResultBuilder]: For program point L446(lines 446 450) no Hoare annotation was computed. [2023-12-02 19:24:04,782 INFO L899 garLoopResultBuilder]: For program point L380(lines 363 398) no Hoare annotation was computed. [2023-12-02 19:24:04,782 INFO L899 garLoopResultBuilder]: For program point L249(lines 249 254) no Hoare annotation was computed. [2023-12-02 19:24:04,782 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 613) no Hoare annotation was computed. [2023-12-02 19:24:04,782 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8657#1(lines 204 606) no Hoare annotation was computed. [2023-12-02 19:24:04,782 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 624) no Hoare annotation was computed. [2023-12-02 19:24:04,782 INFO L899 garLoopResultBuilder]: For program point L117(lines 117 635) no Hoare annotation was computed. [2023-12-02 19:24:04,782 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 386) no Hoare annotation was computed. [2023-12-02 19:24:04,782 INFO L899 garLoopResultBuilder]: For program point L416(lines 416 422) no Hoare annotation was computed. [2023-12-02 19:24:04,782 INFO L899 garLoopResultBuilder]: For program point L483(lines 483 487) no Hoare annotation was computed. [2023-12-02 19:24:04,782 INFO L899 garLoopResultBuilder]: For program point L285(lines 285 289) no Hoare annotation was computed. [2023-12-02 19:24:04,782 INFO L899 garLoopResultBuilder]: For program point L186(lines 186 612) no Hoare annotation was computed. [2023-12-02 19:24:04,782 INFO L899 garLoopResultBuilder]: For program point L153(lines 153 623) no Hoare annotation was computed. [2023-12-02 19:24:04,783 INFO L899 garLoopResultBuilder]: For program point L120(lines 120 634) no Hoare annotation was computed. [2023-12-02 19:24:04,783 INFO L899 garLoopResultBuilder]: For program point L517(lines 517 521) no Hoare annotation was computed. [2023-12-02 19:24:04,783 INFO L899 garLoopResultBuilder]: For program point L683(lines 76 685) no Hoare annotation was computed. [2023-12-02 19:24:04,783 INFO L899 garLoopResultBuilder]: For program point L551(lines 551 556) no Hoare annotation was computed. [2023-12-02 19:24:04,783 INFO L899 garLoopResultBuilder]: For program point $Ultimate##176(lines 456 468) no Hoare annotation was computed. [2023-12-02 19:24:04,783 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8577#1(lines 180 614) no Hoare annotation was computed. [2023-12-02 19:24:04,783 INFO L899 garLoopResultBuilder]: For program point L189(lines 189 611) no Hoare annotation was computed. [2023-12-02 19:24:04,783 INFO L899 garLoopResultBuilder]: For program point L156(lines 156 622) no Hoare annotation was computed. [2023-12-02 19:24:04,783 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 633) no Hoare annotation was computed. [2023-12-02 19:24:04,783 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 19:24:04,783 INFO L899 garLoopResultBuilder]: For program point L322-2(lines 221 598) no Hoare annotation was computed. [2023-12-02 19:24:04,783 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8641#1(lines 198 608) no Hoare annotation was computed. [2023-12-02 19:24:04,784 INFO L899 garLoopResultBuilder]: For program point L224(lines 117 635) no Hoare annotation was computed. [2023-12-02 19:24:04,784 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_ERROR#1(lines 76 685) no Hoare annotation was computed. [2023-12-02 19:24:04,784 INFO L899 garLoopResultBuilder]: For program point L456-1(lines 456 468) no Hoare annotation was computed. [2023-12-02 19:24:04,784 INFO L899 garLoopResultBuilder]: For program point L192(lines 192 610) no Hoare annotation was computed. [2023-12-02 19:24:04,784 INFO L899 garLoopResultBuilder]: For program point L159(lines 159 621) no Hoare annotation was computed. [2023-12-02 19:24:04,784 INFO L899 garLoopResultBuilder]: For program point L126(lines 126 632) no Hoare annotation was computed. [2023-12-02 19:24:04,784 INFO L899 garLoopResultBuilder]: For program point L424(lines 415 435) no Hoare annotation was computed. [2023-12-02 19:24:04,784 INFO L899 garLoopResultBuilder]: For program point $Ultimate##130(lines 342 351) no Hoare annotation was computed. [2023-12-02 19:24:04,784 INFO L899 garLoopResultBuilder]: For program point L358-2(lines 221 598) no Hoare annotation was computed. [2023-12-02 19:24:04,785 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8673#1(lines 210 604) no Hoare annotation was computed. [2023-12-02 19:24:04,785 INFO L899 garLoopResultBuilder]: For program point L95-1(lines 76 685) no Hoare annotation was computed. [2023-12-02 19:24:04,785 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8609#1(lines 192 610) no Hoare annotation was computed. [2023-12-02 19:24:04,785 INFO L899 garLoopResultBuilder]: For program point L459(lines 459 464) no Hoare annotation was computed. [2023-12-02 19:24:04,785 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 19:24:04,785 INFO L899 garLoopResultBuilder]: For program point $Ultimate##158(lines 404 441) no Hoare annotation was computed. [2023-12-02 19:24:04,785 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 609) no Hoare annotation was computed. [2023-12-02 19:24:04,785 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 620) no Hoare annotation was computed. [2023-12-02 19:24:04,785 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 631) no Hoare annotation was computed. [2023-12-02 19:24:04,785 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8466#1(lines 138 628) no Hoare annotation was computed. [2023-12-02 19:24:04,785 INFO L899 garLoopResultBuilder]: For program point L427(lines 427 431) no Hoare annotation was computed. [2023-12-02 19:24:04,785 INFO L899 garLoopResultBuilder]: For program point $Ultimate##166(lines 415 435) no Hoare annotation was computed. [2023-12-02 19:24:04,785 INFO L899 garLoopResultBuilder]: For program point L229-2(lines 221 598) no Hoare annotation was computed. [2023-12-02 19:24:04,785 INFO L899 garLoopResultBuilder]: For program point $Ultimate##219(lines 637 665) no Hoare annotation was computed. [2023-12-02 19:24:04,786 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 679) no Hoare annotation was computed. [2023-12-02 19:24:04,786 INFO L899 garLoopResultBuilder]: For program point L561(lines 561 565) no Hoare annotation was computed. [2023-12-02 19:24:04,786 INFO L899 garLoopResultBuilder]: For program point L495(lines 495 499) no Hoare annotation was computed. [2023-12-02 19:24:04,786 INFO L899 garLoopResultBuilder]: For program point L198(lines 198 608) no Hoare annotation was computed. [2023-12-02 19:24:04,786 INFO L899 garLoopResultBuilder]: For program point L165(lines 165 619) no Hoare annotation was computed. [2023-12-02 19:24:04,786 INFO L899 garLoopResultBuilder]: For program point L132(lines 132 630) no Hoare annotation was computed. [2023-12-02 19:24:04,786 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8561#1(lines 171 617) no Hoare annotation was computed. [2023-12-02 19:24:04,786 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 279) no Hoare annotation was computed. [2023-12-02 19:24:04,789 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:24:04,790 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:24:04,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:24:04 BoogieIcfgContainer [2023-12-02 19:24:04,816 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:24:04,816 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:24:04,816 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:24:04,817 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:24:04,817 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:18:53" (3/4) ... [2023-12-02 19:24:04,819 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 19:24:04,835 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2023-12-02 19:24:04,836 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 19:24:04,837 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 19:24:04,838 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 19:24:04,969 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 19:24:04,969 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 19:24:04,969 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:24:04,970 INFO L158 Benchmark]: Toolchain (without parser) took 312850.33ms. Allocated memory was 209.7MB in the beginning and 4.5GB in the end (delta: 4.2GB). Free memory was 172.4MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2023-12-02 19:24:04,970 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 56.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:24:04,970 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.77ms. Allocated memory is still 209.7MB. Free memory was 172.4MB in the beginning and 156.3MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 19:24:04,971 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.27ms. Allocated memory is still 209.7MB. Free memory was 156.3MB in the beginning and 153.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:24:04,971 INFO L158 Benchmark]: Boogie Preprocessor took 31.65ms. Allocated memory is still 209.7MB. Free memory was 153.2MB in the beginning and 151.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:24:04,971 INFO L158 Benchmark]: RCFGBuilder took 784.97ms. Allocated memory is still 209.7MB. Free memory was 151.1MB in the beginning and 153.2MB in the end (delta: -2.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-12-02 19:24:04,972 INFO L158 Benchmark]: TraceAbstraction took 311484.91ms. Allocated memory was 209.7MB in the beginning and 4.5GB in the end (delta: 4.2GB). Free memory was 152.1MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 3.9GB. Max. memory is 16.1GB. [2023-12-02 19:24:04,972 INFO L158 Benchmark]: Witness Printer took 152.92ms. Allocated memory is still 4.5GB. Free memory was 2.4GB in the beginning and 2.4GB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 19:24:04,974 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 56.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.77ms. Allocated memory is still 209.7MB. Free memory was 172.4MB in the beginning and 156.3MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.27ms. Allocated memory is still 209.7MB. Free memory was 156.3MB in the beginning and 153.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.65ms. Allocated memory is still 209.7MB. Free memory was 153.2MB in the beginning and 151.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 784.97ms. Allocated memory is still 209.7MB. Free memory was 151.1MB in the beginning and 153.2MB in the end (delta: -2.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 311484.91ms. Allocated memory was 209.7MB in the beginning and 4.5GB in the end (delta: 4.2GB). Free memory was 152.1MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 3.9GB. Max. memory is 16.1GB. * Witness Printer took 152.92ms. Allocated memory is still 4.5GB. Free memory was 2.4GB in the beginning and 2.4GB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. 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 - PositiveResult [Line: 679]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 104 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 311.4s, OverallIterations: 21, TraceHistogramMax: 22, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.2s, AutomataDifference: 14.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 69.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5598 SdHoareTripleChecker+Valid, 8.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5598 mSDsluCounter, 11764 SdHoareTripleChecker+Invalid, 7.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7538 mSDsCounter, 1369 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13248 IncrementalHoareTripleChecker+Invalid, 14617 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1369 mSolverCounterUnsat, 4226 mSDtfsCounter, 13248 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9735 GetRequests, 9117 SyntacticMatches, 0 SemanticMatches, 618 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17274 ImplicationChecksByTransitivity, 117.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36149occurred in iteration=18, InterpolantAutomatonStates: 186, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 21 MinimizatonAttempts, 50431 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 652 NumberOfFragments, 1189 HoareAnnotationTreeSize, 1 FomulaSimplifications, 123413 FormulaSimplificationTreeSizeReduction, 56.6s HoareSimplificationTime, 1 FomulaSimplificationsInter, 46977 FormulaSimplificationTreeSizeReductionInter, 12.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 10099 NumberOfCodeBlocks, 9476 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 13054 ConstructedInterpolants, 0 QuantifiedInterpolants, 40743 SizeOfPredicates, 20 NumberOfNonLiveVariables, 4801 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 40 InterpolantComputations, 13 PerfectInterpolantSequences, 68210/71071 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 111]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((blastFlag == 1) && !((8496 == s__s3__tmp__next_state___0))) && (s__state == 8640)) && !((0 == s__hit))) || ((((((ag_X + ag_Y) % 2147483648) < 4328) || (1073741823 < ((ag_X + ag_Y) % 2147483648))) && (8560 == s__state)) && (blastFlag == 1))) || (((((((2 == blastFlag) && (s__s3__tmp__next_state___0 <= 8496)) && (s__state <= 8448)) && !((8496 == s__s3__tmp__next_state___0))) && (0 == s__hit)) && (8465 <= s__s3__tmp__next_state___0)) && ((1073741823 < ((ag_X + ag_Y) % 2147483648)) || (((ag_X + ag_Y) % 2147483648) < 4249)))) || (((((8466 == s__state) && (2 == blastFlag)) && (8576 == s__s3__tmp__next_state___0)) && (0 == s__hit)) && ((1073741823 < ((ag_X + ag_Y) % 2147483648)) || (((ag_X + ag_Y) % 2147483648) < 4249)))) || (((((((ag_X + ag_Y) % 2147483648) < 4328) || (1073741823 < ((ag_X + ag_Y) % 2147483648))) && (blastFlag == 1)) && (8576 == s__s3__tmp__next_state___0)) && (s__state <= 8448))) || (((((8466 == s__state) && (blastFlag == 1)) && (4329 <= ((ag_X + ag_Y) % 2147483648))) && !((8496 == s__s3__tmp__next_state___0))) && !((0 == s__hit)))) || ((((((ag_X + ag_Y) % 2147483648) < 4328) || (1073741823 < ((ag_X + ag_Y) % 2147483648))) && (blastFlag == 1)) && (s__state == 8608))) || ((s__state == 3) && !((8496 == s__s3__tmp__next_state___0)))) || (((8560 == s__state) && (blastFlag == 1)) && !((0 == s__hit)))) || (((((s__state <= 8496) && (2 == blastFlag)) && (8576 == s__s3__tmp__next_state___0)) && (0 == s__hit)) && ((((((ag_X + ag_Y) / 2147483648) * 4294967296) + s__state) == ((2 * ag_X) + (2 * ag_Y))) || (((1073741824 + (((ag_X + ag_Y) / 2147483648) * 2147483648)) <= (ag_X + ag_Y)) && ((((((ag_X + ag_Y) / 2147483648) * 4294967296) + s__state) + 4294967296) == ((2 * ag_X) + (2 * ag_Y))))))) || ((((blastFlag == 1) && (s__state == 8608)) && !((8496 == s__s3__tmp__next_state___0))) && !((0 == s__hit)))) || ((8464 == s__state) && (blastFlag == 0))) || ((((blastFlag == 1) && (s__state <= 8448)) && (3 == s__s3__tmp__next_state___0)) && (0 == s__hit))) || ((blastFlag == 1) && ((1073741823 < ((ag_X + ag_Y) % 2147483648)) || (((ag_X + ag_Y) % 2147483648) < 4249)))) || ((((((blastFlag == 1) && (s__state <= 8448)) && !((8496 == s__s3__tmp__next_state___0))) && (s__s3__tmp__next_state___0 <= 8576)) && (8465 <= s__s3__tmp__next_state___0)) && !((0 == s__hit)))) || (((((!((blastFlag == 4)) && !((8496 == s__s3__tmp__next_state___0))) && (0 == s__hit)) && (s__state == 8592)) && (s__s3__tmp__next_state___0 <= 8576)) && ((1073741823 < ((ag_X + ag_Y) % 2147483648)) || (((ag_X + ag_Y) % 2147483648) < 4249)))) || (((((!((blastFlag == 4)) && !((8496 == s__s3__tmp__next_state___0))) && (0 == s__hit)) && (s__s3__tmp__next_state___0 <= 8576)) && (s__state == 8640)) && ((1073741823 < ((ag_X + ag_Y) % 2147483648)) || (((ag_X + ag_Y) % 2147483648) < 4249)))) || (((s__state == 8656) && (2 == blastFlag)) && !((0 == s__hit)))) || ((((((8496 == s__state) && (2 == blastFlag)) && (((((ag_X + ag_Y) / 2147483648) * 2147483648) + 4248) == (ag_X + ag_Y))) && !((8496 == s__s3__tmp__next_state___0))) && (0 == s__hit)) && (s__s3__tmp__next_state___0 <= 8576))) || ((((2 == blastFlag) && (0 == s__hit)) && ((1073741823 < ((ag_X + ag_Y) % 2147483648)) || (((ag_X + ag_Y) % 2147483648) < 4249))) && (8544 == s__state))) || ((((s__state == 8656) || (s__state == 3)) && ((((ag_X + ag_Y) % 2147483648) < 4328) || (1073741823 < ((ag_X + ag_Y) % 2147483648)))) && (blastFlag == 1))) || (((blastFlag == 1) && !((0 == s__hit))) && (8544 == s__state))) || ((((((ag_X + ag_Y) % 2147483648) < 4328) || (1073741823 < ((ag_X + ag_Y) % 2147483648))) && (blastFlag == 1)) && (s__state == 8640))) || ((((((ag_X + ag_Y) % 2147483648) < 4328) || (1073741823 < ((ag_X + ag_Y) % 2147483648))) && (blastFlag == 1)) && (8544 == s__state))) || ((((2 == blastFlag) && (s__state == 8512)) && (0 == s__hit)) && ((1073741823 < ((ag_X + ag_Y) % 2147483648)) || (((ag_X + ag_Y) % 2147483648) < 4249)))) || (((((!((blastFlag == 4)) && (s__state == 8608)) && !((8496 == s__s3__tmp__next_state___0))) && (0 == s__hit)) && (s__s3__tmp__next_state___0 <= 8576)) && ((1073741823 < ((ag_X + ag_Y) % 2147483648)) || (((ag_X + ag_Y) % 2147483648) < 4249)))) || ((2 == blastFlag) && (s__state == 3))) || ((((s__state == 8528) && (2 == blastFlag)) && (0 == s__hit)) && ((1073741823 < ((ag_X + ag_Y) % 2147483648)) || (((ag_X + ag_Y) % 2147483648) < 4249)))) || ((8672 <= s__state) && (blastFlag == 1))) || ((blastFlag == 1) && (s__state == 3))) || ((((((ag_X + ag_Y) % 2147483648) < 4328) || (1073741823 < ((ag_X + ag_Y) % 2147483648))) && (8466 == s__state)) && (blastFlag == 1))) || (((((((s__state == 8656) || (s__state == 3)) && !((blastFlag == 4))) && !((8496 == s__s3__tmp__next_state___0))) && (0 == s__hit)) && (s__s3__tmp__next_state___0 <= 8576)) && ((1073741823 < ((ag_X + ag_Y) % 2147483648)) || (((ag_X + ag_Y) % 2147483648) < 4249)))) || ((((2 == blastFlag) && (8560 == s__state)) && (0 == s__hit)) && ((1073741823 < ((ag_X + ag_Y) % 2147483648)) || (((ag_X + ag_Y) % 2147483648) < 4249)))) || (((s__state == 8528) && ((((ag_X + ag_Y) % 2147483648) < 4328) || (1073741823 < ((ag_X + ag_Y) % 2147483648)))) && (blastFlag == 1))) || ((((((((8465 <= s__state) && (blastFlag == 1)) && !((8496 == s__state))) && !((8496 == s__s3__tmp__next_state___0))) && (s__s3__tmp__next_state___0 <= 8576)) && (8465 <= s__s3__tmp__next_state___0)) && !((0 == s__hit))) && (s__state <= 8576))) || (((!((blastFlag == 4)) && (s__s3__tmp__next_state___0 == 8640)) && (s__state == 8640)) && !((0 == s__hit)))) || (((((2 == blastFlag) && (8576 == s__s3__tmp__next_state___0)) && (8576 == s__state)) && (0 == s__hit)) && ((1073741823 < ((ag_X + ag_Y) % 2147483648)) || (((ag_X + ag_Y) % 2147483648) < 4249)))) || ((((((ag_X + ag_Y) % 2147483648) < 4328) || (1073741823 < ((ag_X + ag_Y) % 2147483648))) && (blastFlag == 1)) && (s__state == 8592))) || (((((((s__state <= 8496) && (2 == blastFlag)) && (s__s3__tmp__next_state___0 <= 8496)) && !((8496 == s__s3__tmp__next_state___0))) && (0 == s__hit)) && ((((((ag_X + ag_Y) / 2147483648) * 4294967296) + s__state) == ((2 * ag_X) + (2 * ag_Y))) || (((1073741824 + (((ag_X + ag_Y) / 2147483648) * 2147483648)) <= (ag_X + ag_Y)) && ((((((ag_X + ag_Y) / 2147483648) * 4294967296) + s__state) + 4294967296) == ((2 * ag_X) + (2 * ag_Y)))))) && (8465 <= s__s3__tmp__next_state___0))) || ((((!((blastFlag == 4)) && (s__state <= 8448)) && (3 == s__s3__tmp__next_state___0)) && (0 == s__hit)) && ((1073741823 < ((ag_X + ag_Y) % 2147483648)) || (((ag_X + ag_Y) % 2147483648) < 4249)))) || ((blastFlag == 1) && (((((ag_X + ag_Y) / 2147483648) * 4294967296) + s__state) == ((2 * ag_X) + (2 * ag_Y))))) || ((((blastFlag == 1) && !((8496 == s__s3__tmp__next_state___0))) && (s__state == 8592)) && !((0 == s__hit)))) || (((((((((s__state <= 8496) && (2 == blastFlag)) && (8465 <= s__state)) && (s__s3__tmp__next_state___0 <= 8496)) && !((8496 == s__state))) && !((8496 == s__s3__tmp__next_state___0))) && (0 == s__hit)) && (8465 <= s__s3__tmp__next_state___0)) && ((1073741823 < ((ag_X + ag_Y) % 2147483648)) || (((ag_X + ag_Y) % 2147483648) < 4249)))) || (((s__state == 8528) && (blastFlag == 1)) && !((0 == s__hit)))) || (((8672 <= s__state) && !((blastFlag == 4))) && !((0 == s__hit)))) || ((((((blastFlag == 1) && (s__state <= 8640)) && !((8496 == s__state))) && (s__s3__tmp__next_state___0 == 8640)) && !((s__state == 8512))) && !((0 == s__hit)))) || ((((8672 <= s__state) && !((blastFlag == 4))) && (s__s3__tmp__next_state___0 <= 8576)) && ((1073741823 < ((ag_X + ag_Y) % 2147483648)) || (((ag_X + ag_Y) % 2147483648) < 4249)))) || ((((((8466 == s__state) && (2 == blastFlag)) && (((((ag_X + ag_Y) / 2147483648) * 2147483648) + 4248) == (ag_X + ag_Y))) && !((8496 == s__s3__tmp__next_state___0))) && (0 == s__hit)) && (s__s3__tmp__next_state___0 <= 8576))) || (((!((blastFlag == 4)) && (s__state <= 8448)) && (s__s3__tmp__next_state___0 == 8640)) && !((0 == s__hit)))) || (((((2 == blastFlag) && (8576 == s__s3__tmp__next_state___0)) && (s__state <= 8448)) && (0 == s__hit)) && ((1073741823 < ((ag_X + ag_Y) % 2147483648)) || (((ag_X + ag_Y) % 2147483648) < 4249)))) || (((((((ag_X + ag_Y) % 2147483648) < 4328) || (1073741823 < ((ag_X + ag_Y) % 2147483648))) && (blastFlag == 1)) && (8576 == s__s3__tmp__next_state___0)) && (8576 == s__state))) RESULT: Ultimate proved your program to be correct! [2023-12-02 19:24:04,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bb88f4-5835-4243-80f3-fde2af44252d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE