./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_postdec_08_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows 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_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/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_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_postdec_08_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash dda1dbc018b4bfc76fcbb38c3b9fdc56007312d0375f9717b22212f88b410ef7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:21:26,444 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:21:26,514 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 17:21:26,519 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:21:26,519 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:21:26,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:21:26,548 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:21:26,549 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:21:26,549 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:21:26,550 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:21:26,550 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:21:26,551 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:21:26,552 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:21:26,552 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:21:26,553 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:21:26,553 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:21:26,554 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:21:26,554 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:21:26,555 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:21:26,555 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:21:26,556 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:21:26,557 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:21:26,557 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:21:26,558 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:21:26,558 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:21:26,559 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:21:26,559 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:21:26,560 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:21:26,560 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:21:26,560 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 17:21:26,561 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:21:26,561 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:21:26,561 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:21:26,562 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:21:26,562 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:21:26,562 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:21:26,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:21:26,563 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:21:26,563 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:21:26,563 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:21:26,563 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:21:26,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:21:26,564 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:21:26,564 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:21:26,564 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:21:26,565 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:21:26,565 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_734e8252-91e2-488f-86f9-150cc008d200/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda1dbc018b4bfc76fcbb38c3b9fdc56007312d0375f9717b22212f88b410ef7 [2023-12-02 17:21:26,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:21:26,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:21:26,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:21:26,815 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:21:26,816 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:21:26,817 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_postdec_08_good.i [2023-12-02 17:21:29,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:21:29,843 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:21:29,844 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_postdec_08_good.i [2023-12-02 17:21:29,868 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/data/62d7658d1/c13971ca733144de8ba7bca75348241e/FLAG8fff9d7c0 [2023-12-02 17:21:29,883 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/data/62d7658d1/c13971ca733144de8ba7bca75348241e [2023-12-02 17:21:29,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:21:29,887 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:21:29,889 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:21:29,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:21:29,894 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:21:29,895 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:21:29" (1/1) ... [2023-12-02 17:21:29,912 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c4e9486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:29, skipping insertion in model container [2023-12-02 17:21:29,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:21:29" (1/1) ... [2023-12-02 17:21:29,979 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:21:30,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:21:30,692 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:21:30,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:21:30,931 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:21:30,931 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:21:30,931 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:21:30,931 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:21:30,939 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:21:30,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:30 WrapperNode [2023-12-02 17:21:30,939 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:21:30,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:21:30,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:21:30,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:21:30,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:30" (1/1) ... [2023-12-02 17:21:30,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:30" (1/1) ... [2023-12-02 17:21:31,004 INFO L138 Inliner]: procedures = 504, calls = 94, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 161 [2023-12-02 17:21:31,005 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:21:31,005 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:21:31,005 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:21:31,006 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:21:31,013 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:30" (1/1) ... [2023-12-02 17:21:31,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:30" (1/1) ... [2023-12-02 17:21:31,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:30" (1/1) ... [2023-12-02 17:21:31,017 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:30" (1/1) ... [2023-12-02 17:21:31,024 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:30" (1/1) ... [2023-12-02 17:21:31,026 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:30" (1/1) ... [2023-12-02 17:21:31,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:30" (1/1) ... [2023-12-02 17:21:31,030 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:30" (1/1) ... [2023-12-02 17:21:31,033 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:21:31,034 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:21:31,034 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:21:31,035 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:21:31,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:30" (1/1) ... [2023-12-02 17:21:31,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:21:31,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:21:31,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:21:31,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:21:31,105 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2023-12-02 17:21:31,105 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2023-12-02 17:21:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 17:21:31,106 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 17:21:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:21:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 17:21:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:21:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:21:31,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:21:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsTrue [2023-12-02 17:21:31,107 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsTrue [2023-12-02 17:21:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 17:21:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsFalse [2023-12-02 17:21:31,107 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsFalse [2023-12-02 17:21:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 17:21:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 17:21:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:21:31,249 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:21:31,251 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:21:31,445 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:21:31,500 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:21:31,500 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 17:21:31,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:21:31 BoogieIcfgContainer [2023-12-02 17:21:31,502 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:21:31,505 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:21:31,505 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:21:31,508 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:21:31,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:21:29" (1/3) ... [2023-12-02 17:21:31,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1954e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:21:31, skipping insertion in model container [2023-12-02 17:21:31,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:30" (2/3) ... [2023-12-02 17:21:31,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1954e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:21:31, skipping insertion in model container [2023-12-02 17:21:31,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:21:31" (3/3) ... [2023-12-02 17:21:31,511 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fscanf_postdec_08_good.i [2023-12-02 17:21:31,529 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:21:31,529 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-12-02 17:21:31,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:21:31,577 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;@15642aa4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:21:31,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-12-02 17:21:31,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 50 states have internal predecessors, (57), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 17:21:31,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 17:21:31,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:31,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:21:31,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-12-02 17:21:31,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:31,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1971834378, now seen corresponding path program 1 times [2023-12-02 17:21:31,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:21:31,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832950464] [2023-12-02 17:21:31,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:31,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:21:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:31,943 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 17:21:31,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:21:31,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832950464] [2023-12-02 17:21:31,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832950464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:21:31,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:21:31,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:21:31,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27467651] [2023-12-02 17:21:31,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:21:31,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:21:31,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:21:31,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:21:31,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:21:31,985 INFO L87 Difference]: Start difference. First operand has 73 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 50 states have internal predecessors, (57), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 17:21:32,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:21:32,089 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2023-12-02 17:21:32,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:21:32,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 16 [2023-12-02 17:21:32,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:21:32,108 INFO L225 Difference]: With dead ends: 73 [2023-12-02 17:21:32,108 INFO L226 Difference]: Without dead ends: 66 [2023-12-02 17:21:32,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:21:32,115 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 2 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:21:32,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 219 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:21:32,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-02 17:21:32,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-12-02 17:21:32,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 45 states have internal predecessors, (51), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 17:21:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2023-12-02 17:21:32,157 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 16 [2023-12-02 17:21:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:21:32,158 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2023-12-02 17:21:32,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 17:21:32,159 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2023-12-02 17:21:32,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 17:21:32,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:32,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:21:32,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:21:32,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-12-02 17:21:32,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:32,162 INFO L85 PathProgramCache]: Analyzing trace with hash -997323504, now seen corresponding path program 1 times [2023-12-02 17:21:32,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:21:32,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413385042] [2023-12-02 17:21:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:32,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:21:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:32,455 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 17:21:32,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:21:32,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413385042] [2023-12-02 17:21:32,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413385042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:21:32,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:21:32,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 17:21:32,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469707996] [2023-12-02 17:21:32,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:21:32,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:21:32,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:21:32,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:21:32,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:21:32,460 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:21:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:21:32,590 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2023-12-02 17:21:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 17:21:32,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2023-12-02 17:21:32,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:21:32,592 INFO L225 Difference]: With dead ends: 66 [2023-12-02 17:21:32,593 INFO L226 Difference]: Without dead ends: 65 [2023-12-02 17:21:32,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:21:32,595 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 7 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:21:32,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 318 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:21:32,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-02 17:21:32,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-12-02 17:21:32,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 44 states have internal predecessors, (50), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 17:21:32,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2023-12-02 17:21:32,608 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 17 [2023-12-02 17:21:32,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:21:32,608 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2023-12-02 17:21:32,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:21:32,609 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2023-12-02 17:21:32,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 17:21:32,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:32,610 INFO L195 NwaCegarLoop]: trace histogram [3, 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 17:21:32,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:21:32,611 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-12-02 17:21:32,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:32,612 INFO L85 PathProgramCache]: Analyzing trace with hash 308962028, now seen corresponding path program 1 times [2023-12-02 17:21:32,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:21:32,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118704264] [2023-12-02 17:21:32,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:32,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:21:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 17:21:32,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:21:32,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118704264] [2023-12-02 17:21:32,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118704264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:21:32,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:21:32,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:21:32,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291568694] [2023-12-02 17:21:32,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:21:32,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:21:32,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:21:32,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:21:32,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:21:32,686 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 17:21:32,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:21:32,730 INFO L93 Difference]: Finished difference Result 113 states and 139 transitions. [2023-12-02 17:21:32,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:21:32,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 30 [2023-12-02 17:21:32,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:21:32,732 INFO L225 Difference]: With dead ends: 113 [2023-12-02 17:21:32,732 INFO L226 Difference]: Without dead ends: 63 [2023-12-02 17:21:32,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:21:32,734 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:21:32,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:21:32,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-02 17:21:32,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-12-02 17:21:32,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 38 states have (on average 1.263157894736842) internal successors, (48), 43 states have internal predecessors, (48), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 17:21:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2023-12-02 17:21:32,746 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 30 [2023-12-02 17:21:32,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:21:32,746 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2023-12-02 17:21:32,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 17:21:32,747 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2023-12-02 17:21:32,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 17:21:32,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:32,748 INFO L195 NwaCegarLoop]: trace histogram [3, 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 17:21:32,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:21:32,749 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-12-02 17:21:32,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:32,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1334468647, now seen corresponding path program 1 times [2023-12-02 17:21:32,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:21:32,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352123969] [2023-12-02 17:21:32,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:32,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:21:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:32,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 17:21:32,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:21:32,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352123969] [2023-12-02 17:21:32,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352123969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:21:32,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:21:32,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:21:32,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887781701] [2023-12-02 17:21:32,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:21:32,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:21:32,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:21:32,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:21:32,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:21:32,856 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 17:21:32,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:21:32,911 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2023-12-02 17:21:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:21:32,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 31 [2023-12-02 17:21:32,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:21:32,913 INFO L225 Difference]: With dead ends: 63 [2023-12-02 17:21:32,913 INFO L226 Difference]: Without dead ends: 62 [2023-12-02 17:21:32,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:21:32,915 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 2 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:21:32,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 181 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:21:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-02 17:21:32,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-02 17:21:32,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.236842105263158) internal successors, (47), 42 states have internal predecessors, (47), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 17:21:32,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2023-12-02 17:21:32,925 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 31 [2023-12-02 17:21:32,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:21:32,926 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2023-12-02 17:21:32,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 17:21:32,926 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2023-12-02 17:21:32,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 17:21:32,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:32,928 INFO L195 NwaCegarLoop]: trace histogram [3, 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 17:21:32,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:21:32,928 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-12-02 17:21:32,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:32,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1581145003, now seen corresponding path program 1 times [2023-12-02 17:21:32,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:21:32,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609818946] [2023-12-02 17:21:32,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:32,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:21:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:33,113 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 17:21:33,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:21:33,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609818946] [2023-12-02 17:21:33,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609818946] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:21:33,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008796310] [2023-12-02 17:21:33,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:33,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:33,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:21:33,119 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:21:33,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:21:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:33,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:21:33,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:21:33,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 17:21:33,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-02 17:21:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:21:33,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:21:33,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 17:21:33,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008796310] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:21:33,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1484110939] [2023-12-02 17:21:33,656 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2023-12-02 17:21:33,657 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:21:33,660 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:21:33,665 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:21:33,666 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:21:36,060 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsTrue with input of size 24 for LOIs [2023-12-02 17:21:36,064 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsFalse with input of size 123 for LOIs [2023-12-02 17:21:36,103 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 166 for LOIs [2023-12-02 17:21:36,198 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:23:01,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1484110939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:23:01,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:23:01,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 6, 5] total 32 [2023-12-02 17:23:01,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445654993] [2023-12-02 17:23:01,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:23:01,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 17:23:01,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:23:01,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 17:23:01,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=868, Unknown=32, NotChecked=0, Total=1056 [2023-12-02 17:23:01,161 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 22 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 17:23:03,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:23:05,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:23:08,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:23:11,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:23:13,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:23:15,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:23:18,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:23:41,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:23:51,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:23:53,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:23:56,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:23:58,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:00,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:02,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:04,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:06,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:09,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:10,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:13,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:15,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:17,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:19,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:21,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:24,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:26,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:28,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:30,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:33,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:35,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:38,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:40,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:42,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:44,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:46,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:49,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:51,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:53,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:55,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:57,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:24:59,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:25:02,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:25:04,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:25:06,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:25:08,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:25:10,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:25:12,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:25:15,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:25:15,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:25:15,813 INFO L93 Difference]: Finished difference Result 116 states and 135 transitions. [2023-12-02 17:25:15,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 17:25:15,814 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 32 [2023-12-02 17:25:15,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:25:15,815 INFO L225 Difference]: With dead ends: 116 [2023-12-02 17:25:15,815 INFO L226 Difference]: Without dead ends: 82 [2023-12-02 17:25:15,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 113.3s TimeCoverageRelationStatistics Valid=177, Invalid=1039, Unknown=44, NotChecked=0, Total=1260 [2023-12-02 17:25:15,817 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 65 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 4 mSolverCounterUnsat, 46 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 102.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 46 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:25:15,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 290 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 584 Invalid, 46 Unknown, 0 Unchecked, 106.3s Time] [2023-12-02 17:25:15,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-02 17:25:15,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2023-12-02 17:25:15,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 53 states have internal predecessors, (59), 17 states have call successors, (17), 8 states have call predecessors, (17), 8 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-02 17:25:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 93 transitions. [2023-12-02 17:25:15,841 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 93 transitions. Word has length 32 [2023-12-02 17:25:15,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:25:15,842 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 93 transitions. [2023-12-02 17:25:15,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 17:25:15,842 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 93 transitions. [2023-12-02 17:25:15,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 17:25:15,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:25:15,844 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 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 17:25:15,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:25:16,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:25:16,045 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-12-02 17:25:16,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:25:16,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1896895613, now seen corresponding path program 1 times [2023-12-02 17:25:16,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:25:16,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376680796] [2023-12-02 17:25:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:25:16,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:25:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:25:16,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 17:25:16,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:25:16,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376680796] [2023-12-02 17:25:16,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376680796] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:25:16,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743290619] [2023-12-02 17:25:16,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:25:16,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:25:16,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:25:16,251 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:25:16,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:25:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:25:16,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:25:16,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:25:16,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 17:25:16,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-02 17:25:16,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:25:16,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:25:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 17:25:16,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743290619] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:25:16,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2011302828] [2023-12-02 17:25:16,568 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 17:25:16,568 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:25:16,568 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:25:16,568 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:25:16,569 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:25:18,050 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsTrue with input of size 24 for LOIs [2023-12-02 17:25:18,053 INFO L197 IcfgInterpreter]: Interpreting procedure printIntLine with input of size 144 for LOIs [2023-12-02 17:25:18,076 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsFalse with input of size 123 for LOIs [2023-12-02 17:25:18,096 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 73 for LOIs [2023-12-02 17:25:18,108 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:27:02,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2011302828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:27:02,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:27:02,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [5, 6, 5] total 36 [2023-12-02 17:27:02,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468068094] [2023-12-02 17:27:02,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:27:02,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 17:27:02,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:27:02,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 17:27:02,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1115, Unknown=43, NotChecked=0, Total=1332 [2023-12-02 17:27:02,797 INFO L87 Difference]: Start difference. First operand 79 states and 93 transitions. Second operand has 26 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 17:27:05,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:07,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:12,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:14,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:16,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:18,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:20,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:22,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:25,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:27,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:29,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:31,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:33,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:36,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:38,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:40,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:42,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:44,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:46,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:48,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:51,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:53,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:55,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:27:57,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:00,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:02,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:04,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:06,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:09,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:11,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:14,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:16,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:18,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:20,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:22,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:25,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:27,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:29,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:31,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:34,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:36,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:38,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:28:58,877 WARN L293 SmtUtils]: Spent 10.17s on a formula simplification. DAG size of input: 178 DAG size of output: 179 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:29:02,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:04,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:08,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:11,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:14,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:17,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:19,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:21,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:24,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:26,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:28,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:30,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:32,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:34,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:37,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:39,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:41,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:43,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:45,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:48,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:50,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:52,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:54,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:56,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:29:59,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:30:01,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:30:03,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:30:05,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:30:08,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:30:17,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:30:19,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:30:22,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:30:24,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:30:24,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:30:24,992 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2023-12-02 17:30:24,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 17:30:24,993 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 34 [2023-12-02 17:30:24,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:30:24,994 INFO L225 Difference]: With dead ends: 114 [2023-12-02 17:30:24,994 INFO L226 Difference]: Without dead ends: 80 [2023-12-02 17:30:24,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 68 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 133.9s TimeCoverageRelationStatistics Valid=194, Invalid=1240, Unknown=48, NotChecked=0, Total=1482 [2023-12-02 17:30:24,996 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 57 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 3 mSolverCounterUnsat, 76 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 166.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 76 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 173.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:30:24,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 479 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1092 Invalid, 76 Unknown, 0 Unchecked, 173.0s Time] [2023-12-02 17:30:24,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-02 17:30:25,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2023-12-02 17:30:25,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 46 states have internal predecessors, (50), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 17:30:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2023-12-02 17:30:25,018 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 34 [2023-12-02 17:30:25,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:30:25,019 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2023-12-02 17:30:25,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 17:30:25,019 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2023-12-02 17:30:25,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 17:30:25,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:30:25,021 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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, 1, 1] [2023-12-02 17:30:25,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 17:30:25,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:30:25,221 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-12-02 17:30:25,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:30:25,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1060581806, now seen corresponding path program 1 times [2023-12-02 17:30:25,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:30:25,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828959303] [2023-12-02 17:30:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:30:25,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:30:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:30:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 17:30:25,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:30:25,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828959303] [2023-12-02 17:30:25,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828959303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:30:25,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:30:25,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:30:25,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266414837] [2023-12-02 17:30:25,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:30:25,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:30:25,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:30:25,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:30:25,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:30:25,311 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 17:30:25,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:30:25,414 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2023-12-02 17:30:25,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:30:25,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 46 [2023-12-02 17:30:25,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:30:25,416 INFO L225 Difference]: With dead ends: 72 [2023-12-02 17:30:25,416 INFO L226 Difference]: Without dead ends: 71 [2023-12-02 17:30:25,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:30:25,417 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 9 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:30:25,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 169 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:30:25,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-02 17:30:25,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2023-12-02 17:30:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 45 states have internal predecessors, (49), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 17:30:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2023-12-02 17:30:25,440 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 46 [2023-12-02 17:30:25,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:30:25,441 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2023-12-02 17:30:25,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 17:30:25,441 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2023-12-02 17:30:25,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 17:30:25,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:30:25,443 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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, 1, 1, 1] [2023-12-02 17:30:25,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 17:30:25,443 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-12-02 17:30:25,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:30:25,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1481702250, now seen corresponding path program 1 times [2023-12-02 17:30:25,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:30:25,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768193552] [2023-12-02 17:30:25,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:30:25,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:30:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:30:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 17:30:25,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:30:25,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768193552] [2023-12-02 17:30:25,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768193552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:30:25,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:30:25,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:30:25,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124847410] [2023-12-02 17:30:25,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:30:25,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:30:25,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:30:25,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:30:25,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:30:25,531 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 17:30:25,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:30:25,648 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2023-12-02 17:30:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:30:25,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 47 [2023-12-02 17:30:25,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:30:25,651 INFO L225 Difference]: With dead ends: 79 [2023-12-02 17:30:25,651 INFO L226 Difference]: Without dead ends: 78 [2023-12-02 17:30:25,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:30:25,652 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 4 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:30:25,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 180 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:30:25,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-02 17:30:25,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2023-12-02 17:30:25,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 47 states have (on average 1.148936170212766) internal successors, (54), 49 states have internal predecessors, (54), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 17:30:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2023-12-02 17:30:25,675 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 47 [2023-12-02 17:30:25,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:30:25,675 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2023-12-02 17:30:25,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 17:30:25,676 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2023-12-02 17:30:25,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 17:30:25,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:30:25,677 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1] [2023-12-02 17:30:25,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 17:30:25,678 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-12-02 17:30:25,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:30:25,679 INFO L85 PathProgramCache]: Analyzing trace with hash 852318217, now seen corresponding path program 1 times [2023-12-02 17:30:25,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:30:25,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334624237] [2023-12-02 17:30:25,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:30:25,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:30:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:30:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-02 17:30:25,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:30:25,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334624237] [2023-12-02 17:30:25,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334624237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:30:25,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:30:25,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:30:25,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404412943] [2023-12-02 17:30:25,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:30:25,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:30:25,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:30:25,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:30:25,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:30:25,767 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 17:30:25,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:30:25,861 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2023-12-02 17:30:25,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:30:25,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 51 [2023-12-02 17:30:25,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:30:25,863 INFO L225 Difference]: With dead ends: 93 [2023-12-02 17:30:25,863 INFO L226 Difference]: Without dead ends: 67 [2023-12-02 17:30:25,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:30:25,865 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:30:25,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 169 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:30:25,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-12-02 17:30:25,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-12-02 17:30:25,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 43 states have internal predecessors, (46), 14 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 17:30:25,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2023-12-02 17:30:25,889 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 51 [2023-12-02 17:30:25,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:30:25,890 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2023-12-02 17:30:25,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 17:30:25,890 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2023-12-02 17:30:25,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 17:30:25,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:30:25,891 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:30:25,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 17:30:25,892 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-12-02 17:30:25,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:30:25,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1851292151, now seen corresponding path program 1 times [2023-12-02 17:30:25,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:30:25,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870487001] [2023-12-02 17:30:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:30:25,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:30:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:30:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-02 17:30:26,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:30:26,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870487001] [2023-12-02 17:30:26,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870487001] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:30:26,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089007277] [2023-12-02 17:30:26,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:30:26,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:30:26,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:30:26,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:30:26,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 17:30:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:30:26,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:30:26,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:30:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-02 17:30:26,164 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:30:26,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089007277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:30:26,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:30:26,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-12-02 17:30:26,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107723106] [2023-12-02 17:30:26,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:30:26,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:30:26,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:30:26,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:30:26,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:30:26,166 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 17:30:26,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:30:26,246 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2023-12-02 17:30:26,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:30:26,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 56 [2023-12-02 17:30:26,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:30:26,248 INFO L225 Difference]: With dead ends: 79 [2023-12-02 17:30:26,248 INFO L226 Difference]: Without dead ends: 67 [2023-12-02 17:30:26,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:30:26,249 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:30:26,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:30:26,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-12-02 17:30:26,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-12-02 17:30:26,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 43 states have internal predecessors, (45), 14 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 17:30:26,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2023-12-02 17:30:26,269 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 56 [2023-12-02 17:30:26,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:30:26,269 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2023-12-02 17:30:26,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 17:30:26,270 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2023-12-02 17:30:26,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 17:30:26,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:30:26,271 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:30:26,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 17:30:26,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:30:26,477 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-12-02 17:30:26,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:30:26,478 INFO L85 PathProgramCache]: Analyzing trace with hash -773957052, now seen corresponding path program 1 times [2023-12-02 17:30:26,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:30:26,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167186664] [2023-12-02 17:30:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:30:26,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:30:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:30:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-02 17:30:26,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:30:26,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167186664] [2023-12-02 17:30:26,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167186664] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:30:26,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757551563] [2023-12-02 17:30:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:30:26,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:30:26,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:30:26,647 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:30:26,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e8252-91e2-488f-86f9-150cc008d200/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:30:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:30:26,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:30:26,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:30:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-02 17:30:26,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:30:26,996 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-02 17:30:26,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757551563] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:30:26,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [782136142] [2023-12-02 17:30:27,000 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 17:30:27,000 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:30:27,001 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:30:27,001 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:30:27,001 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:30:30,088 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsTrue with input of size 24 for LOIs [2023-12-02 17:30:30,091 INFO L197 IcfgInterpreter]: Interpreting procedure printIntLine with input of size 161 for LOIs [2023-12-02 17:30:30,124 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsFalse with input of size 202 for LOIs [2023-12-02 17:30:30,189 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 31 for LOIs [2023-12-02 17:30:30,194 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:32:35,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [782136142] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:32:35,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:32:35,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [5, 5, 5] total 46 [2023-12-02 17:32:35,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011830384] [2023-12-02 17:32:35,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:32:35,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-02 17:32:35,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:32:35,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-02 17:32:35,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1953, Unknown=37, NotChecked=0, Total=2162 [2023-12-02 17:32:35,029 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 37 states, 24 states have (on average 1.25) internal successors, (30), 29 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 17:32:42,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:32:59,831 WARN L293 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 259 DAG size of output: 259 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:33:03,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:33:19,064 WARN L293 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 259 DAG size of output: 259 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:33:22,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:33:44,780 WARN L293 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 257 DAG size of output: 257 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:33:46,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:01,570 WARN L293 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 256 DAG size of output: 256 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:34:03,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:08,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:17,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:23,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:25,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:27,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:30,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:32,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:34,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:36,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:39,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:42,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:44,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:47,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:50,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:52,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:54,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:56,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:34:58,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:35:00,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:35:03,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:35:06,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:35:09,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:35:11,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:35:13,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:35:16,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:35:18,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:35:21,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:35:23,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:35:25,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:35:27,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:35:30,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:35:50,070 WARN L293 SmtUtils]: Spent 9.03s on a formula simplification. DAG size of input: 167 DAG size of output: 168 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:36:10,397 WARN L293 SmtUtils]: Spent 9.96s on a formula simplification. DAG size of input: 211 DAG size of output: 168 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:36:14,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:36:17,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:36:19,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:36:22,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:36:24,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:36:26,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:36:29,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:36:31,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:36:33,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:36:36,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:36:38,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:36:41,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:36:43,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]