./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0232_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0232_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX --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 32bit --witnessprinter.graph.data.programhash b36390e4ace21fb538f0c1df6f562bcf2825b5901fb45d9987e6242615034592 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:13:51,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:13:51,868 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:13:51,882 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:13:51,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:13:51,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:13:51,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:13:51,929 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:13:51,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:13:51,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:13:51,936 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:13:51,937 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:13:51,937 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:13:51,939 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:13:51,940 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:13:51,940 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:13:51,940 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:13:51,941 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:13:51,941 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:13:51,942 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:13:51,944 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:13:51,944 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:13:51,946 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:13:51,946 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:13:51,946 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:13:51,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:13:51,947 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:13:51,948 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:13:51,948 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:13:51,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:13:51,950 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:13:51,950 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:13:51,951 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:13:51,951 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:13:51,951 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:13:51,951 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:13:51,952 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:13:51,952 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:13:51,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:51,953 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:13:51,953 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:13:51,953 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:13:51,954 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:13:51,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:13:51,954 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:13:51,955 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:13:51,955 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:13:51,955 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_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b36390e4ace21fb538f0c1df6f562bcf2825b5901fb45d9987e6242615034592 [2023-11-12 00:13:52,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:13:52,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:13:52,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:13:52,255 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:13:52,255 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:13:52,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/list-ext-properties/test-0232_1-1.i [2023-11-12 00:13:55,337 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:13:55,584 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:13:55,585 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/sv-benchmarks/c/list-ext-properties/test-0232_1-1.i [2023-11-12 00:13:55,615 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/data/e2b0c54c3/680fa4153850491dbc46c509ec942768/FLAG1d6b05d29 [2023-11-12 00:13:55,628 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/data/e2b0c54c3/680fa4153850491dbc46c509ec942768 [2023-11-12 00:13:55,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:13:55,632 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:13:55,634 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:55,634 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:13:55,642 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:13:55,642 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:55" (1/1) ... [2023-11-12 00:13:55,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62cf3792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:55, skipping insertion in model container [2023-11-12 00:13:55,644 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:55" (1/1) ... [2023-11-12 00:13:55,711 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:13:56,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:56,035 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:13:56,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:56,132 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:13:56,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:56 WrapperNode [2023-11-12 00:13:56,133 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:56,134 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:56,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:13:56,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:13:56,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:56" (1/1) ... [2023-11-12 00:13:56,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:56" (1/1) ... [2023-11-12 00:13:56,208 INFO L138 Inliner]: procedures = 126, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2023-11-12 00:13:56,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:56,209 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:13:56,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:13:56,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:13:56,219 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:56" (1/1) ... [2023-11-12 00:13:56,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:56" (1/1) ... [2023-11-12 00:13:56,223 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:56" (1/1) ... [2023-11-12 00:13:56,223 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:56" (1/1) ... [2023-11-12 00:13:56,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:56" (1/1) ... [2023-11-12 00:13:56,260 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:56" (1/1) ... [2023-11-12 00:13:56,262 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:56" (1/1) ... [2023-11-12 00:13:56,263 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:56" (1/1) ... [2023-11-12 00:13:56,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:13:56,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:13:56,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:13:56,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:13:56,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:56" (1/1) ... [2023-11-12 00:13:56,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:56,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:56,304 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:13:56,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:13:56,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:13:56,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:13:56,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:13:56,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:13:56,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:13:56,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:13:56,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:13:56,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:13:56,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:13:56,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:13:56,479 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:13:56,480 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:13:56,689 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:13:56,810 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:13:56,810 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 00:13:56,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:56 BoogieIcfgContainer [2023-11-12 00:13:56,813 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:13:56,816 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:13:56,816 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:13:56,820 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:13:56,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:13:55" (1/3) ... [2023-11-12 00:13:56,821 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46bf2189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:56, skipping insertion in model container [2023-11-12 00:13:56,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:56" (2/3) ... [2023-11-12 00:13:56,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46bf2189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:56, skipping insertion in model container [2023-11-12 00:13:56,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:56" (3/3) ... [2023-11-12 00:13:56,823 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0232_1-1.i [2023-11-12 00:13:56,844 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:13:56,844 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-12 00:13:56,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:13:56,902 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;@3d01138a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:13:56,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-12 00:13:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:56,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:13:56,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:56,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:13:56,914 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)] === [2023-11-12 00:13:56,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:56,920 INFO L85 PathProgramCache]: Analyzing trace with hash 99176, now seen corresponding path program 1 times [2023-11-12 00:13:56,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:56,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754865457] [2023-11-12 00:13:56,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:56,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:57,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:57,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:57,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754865457] [2023-11-12 00:13:57,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754865457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:57,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:57,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:13:57,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326438374] [2023-11-12 00:13:57,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:57,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:57,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:57,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:57,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:57,261 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:57,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:57,352 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2023-11-12 00:13:57,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:57,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 00:13:57,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:57,363 INFO L225 Difference]: With dead ends: 38 [2023-11-12 00:13:57,363 INFO L226 Difference]: Without dead ends: 24 [2023-11-12 00:13:57,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:57,370 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:57,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 48 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:13:57,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-12 00:13:57,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-12 00:13:57,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.625) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:57,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-11-12 00:13:57,405 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 3 [2023-11-12 00:13:57,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:57,406 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-11-12 00:13:57,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:57,406 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-11-12 00:13:57,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:13:57,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:57,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:13:57,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:13:57,408 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:13:57,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:57,409 INFO L85 PathProgramCache]: Analyzing trace with hash 95311597, now seen corresponding path program 1 times [2023-11-12 00:13:57,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:57,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264009258] [2023-11-12 00:13:57,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:57,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:57,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:57,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264009258] [2023-11-12 00:13:57,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264009258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:57,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:57,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:13:57,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613800664] [2023-11-12 00:13:57,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:57,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:57,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:57,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:57,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:57,616 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:57,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:57,678 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2023-11-12 00:13:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:57,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:13:57,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:57,679 INFO L225 Difference]: With dead ends: 28 [2023-11-12 00:13:57,680 INFO L226 Difference]: Without dead ends: 26 [2023-11-12 00:13:57,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:57,682 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:57,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 49 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:57,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-12 00:13:57,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-12 00:13:57,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:57,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-11-12 00:13:57,689 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 5 [2023-11-12 00:13:57,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:57,689 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-11-12 00:13:57,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:57,690 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-11-12 00:13:57,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:13:57,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:57,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:57,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:13:57,691 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:13:57,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:57,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1204736416, now seen corresponding path program 1 times [2023-11-12 00:13:57,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:57,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046318402] [2023-11-12 00:13:57,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:57,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:57,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:57,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046318402] [2023-11-12 00:13:57,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046318402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:57,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:57,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:13:57,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988113559] [2023-11-12 00:13:57,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:57,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:57,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:57,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:57,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:57,789 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:57,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:57,826 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2023-11-12 00:13:57,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:57,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-12 00:13:57,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:57,828 INFO L225 Difference]: With dead ends: 26 [2023-11-12 00:13:57,828 INFO L226 Difference]: Without dead ends: 25 [2023-11-12 00:13:57,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:57,830 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:57,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 30 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:57,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-12 00:13:57,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-12 00:13:57,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.5) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:57,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2023-11-12 00:13:57,836 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 9 [2023-11-12 00:13:57,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:57,837 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-11-12 00:13:57,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:57,837 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2023-11-12 00:13:57,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:13:57,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:57,838 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:57,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:13:57,839 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:13:57,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:57,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1204736100, now seen corresponding path program 1 times [2023-11-12 00:13:57,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:57,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614674048] [2023-11-12 00:13:57,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:57,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:57,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:57,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:57,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614674048] [2023-11-12 00:13:57,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614674048] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:13:57,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999288014] [2023-11-12 00:13:57,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:57,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:57,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:57,987 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:13:58,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:13:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:58,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:13:58,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:58,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:58,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:58,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999288014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:58,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:13:58,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-12 00:13:58,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081791463] [2023-11-12 00:13:58,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:58,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:13:58,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:58,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:13:58,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:13:58,221 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:58,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:58,338 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2023-11-12 00:13:58,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:13:58,339 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-12 00:13:58,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:58,340 INFO L225 Difference]: With dead ends: 25 [2023-11-12 00:13:58,341 INFO L226 Difference]: Without dead ends: 24 [2023-11-12 00:13:58,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:13:58,347 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 34 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:58,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 36 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:13:58,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-12 00:13:58,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-12 00:13:58,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:58,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-11-12 00:13:58,353 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 9 [2023-11-12 00:13:58,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:58,354 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-11-12 00:13:58,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:58,354 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-11-12 00:13:58,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:13:58,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:58,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:58,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:58,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:58,556 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:13:58,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:58,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1307903183, now seen corresponding path program 1 times [2023-11-12 00:13:58,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:58,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161822387] [2023-11-12 00:13:58,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:58,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:58,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:58,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161822387] [2023-11-12 00:13:58,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161822387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:58,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:58,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:13:58,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074543328] [2023-11-12 00:13:58,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:58,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:13:58,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:58,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:13:58,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:58,688 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:58,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:58,765 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-11-12 00:13:58,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:13:58,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 00:13:58,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:58,767 INFO L225 Difference]: With dead ends: 39 [2023-11-12 00:13:58,767 INFO L226 Difference]: Without dead ends: 34 [2023-11-12 00:13:58,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:13:58,769 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 16 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:58,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 55 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:13:58,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-12 00:13:58,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2023-11-12 00:13:58,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.45) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:58,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2023-11-12 00:13:58,774 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 10 [2023-11-12 00:13:58,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:58,775 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2023-11-12 00:13:58,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:58,775 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-11-12 00:13:58,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:13:58,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:58,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:58,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:13:58,777 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:13:58,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:58,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1307876691, now seen corresponding path program 1 times [2023-11-12 00:13:58,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:58,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331594985] [2023-11-12 00:13:58,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:58,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:58,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:58,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:58,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331594985] [2023-11-12 00:13:58,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331594985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:58,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:58,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:13:58,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295095808] [2023-11-12 00:13:58,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:58,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:13:58,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:58,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:13:58,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:13:58,949 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:59,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:59,060 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2023-11-12 00:13:59,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:13:59,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 00:13:59,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:59,062 INFO L225 Difference]: With dead ends: 42 [2023-11-12 00:13:59,062 INFO L226 Difference]: Without dead ends: 41 [2023-11-12 00:13:59,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:13:59,064 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:59,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 61 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:13:59,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-12 00:13:59,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2023-11-12 00:13:59,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:59,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-11-12 00:13:59,068 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 10 [2023-11-12 00:13:59,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:59,069 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-11-12 00:13:59,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:59,073 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-11-12 00:13:59,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:13:59,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:59,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:59,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:13:59,075 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:13:59,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:59,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1307886524, now seen corresponding path program 1 times [2023-11-12 00:13:59,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:59,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446878015] [2023-11-12 00:13:59,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:59,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:59,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:59,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446878015] [2023-11-12 00:13:59,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446878015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:59,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:59,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:13:59,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534633475] [2023-11-12 00:13:59,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:59,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:59,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:59,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:59,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:59,167 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:59,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:59,217 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2023-11-12 00:13:59,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:59,218 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 00:13:59,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:59,220 INFO L225 Difference]: With dead ends: 28 [2023-11-12 00:13:59,220 INFO L226 Difference]: Without dead ends: 27 [2023-11-12 00:13:59,221 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 [2023-11-12 00:13:59,222 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:59,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 40 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:59,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-12 00:13:59,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-12 00:13:59,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-11-12 00:13:59,236 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 10 [2023-11-12 00:13:59,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:59,237 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-11-12 00:13:59,237 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:59,237 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2023-11-12 00:13:59,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:13:59,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:59,238 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-12 00:13:59,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:13:59,238 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:13:59,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:59,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1889774359, now seen corresponding path program 1 times [2023-11-12 00:13:59,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:59,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154721030] [2023-11-12 00:13:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:59,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:59,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:59,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154721030] [2023-11-12 00:13:59,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154721030] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:13:59,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966136136] [2023-11-12 00:13:59,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:59,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:59,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:59,413 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:13:59,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:13:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:59,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:13:59,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:59,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:59,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:59,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966136136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:59,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:13:59,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-11-12 00:13:59,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299114355] [2023-11-12 00:13:59,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:59,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:13:59,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:59,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:13:59,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:13:59,624 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:59,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:59,675 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2023-11-12 00:13:59,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:59,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-12 00:13:59,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:59,677 INFO L225 Difference]: With dead ends: 28 [2023-11-12 00:13:59,677 INFO L226 Difference]: Without dead ends: 27 [2023-11-12 00:13:59,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:13:59,678 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:59,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:59,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-12 00:13:59,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2023-11-12 00:13:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:59,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2023-11-12 00:13:59,683 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 11 [2023-11-12 00:13:59,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:59,684 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2023-11-12 00:13:59,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:59,684 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-11-12 00:13:59,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:13:59,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:59,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:59,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:59,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:59,892 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:13:59,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:59,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1555920495, now seen corresponding path program 1 times [2023-11-12 00:13:59,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:59,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489348135] [2023-11-12 00:13:59,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:59,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:59,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:59,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:59,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489348135] [2023-11-12 00:13:59,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489348135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:59,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:59,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:13:59,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152298799] [2023-11-12 00:13:59,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:59,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:59,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:59,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:59,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:59,955 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:59,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:59,987 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2023-11-12 00:13:59,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:59,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-12 00:13:59,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:59,989 INFO L225 Difference]: With dead ends: 26 [2023-11-12 00:13:59,989 INFO L226 Difference]: Without dead ends: 25 [2023-11-12 00:13:59,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:59,990 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:59,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:59,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-12 00:13:59,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-12 00:13:59,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:59,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2023-11-12 00:13:59,995 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 12 [2023-11-12 00:13:59,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:59,995 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2023-11-12 00:13:59,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:59,996 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2023-11-12 00:13:59,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:13:59,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:59,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2023-11-12 00:13:59,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:13:59,997 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:13:59,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:59,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1546537068, now seen corresponding path program 1 times [2023-11-12 00:13:59,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:59,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789652864] [2023-11-12 00:13:59,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:59,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:00,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:00,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789652864] [2023-11-12 00:14:00,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789652864] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:14:00,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968784999] [2023-11-12 00:14:00,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:00,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:00,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:00,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:00,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:14:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:00,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:14:00,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:00,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:00,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:14:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:00,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968784999] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:14:00,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1682246953] [2023-11-12 00:14:00,479 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-12 00:14:00,479 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:14:00,483 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:14:00,490 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:14:00,490 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:14:02,634 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:14:04,945 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '793#(and (<= ~c~0 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#list~0#1.offset| 0) (= |ULTIMATE.start_main_~length~0#1| |ULTIMATE.start_main_#t~post12#1|) (<= 2 |ULTIMATE.start_main_~#list~0#1.base|) (<= 2147483647 |ULTIMATE.start_main_#t~post12#1|) (<= 1 ~c~0) (exists ((|v_#memory_int_75| (Array Int (Array Int Int))) (|v_#memory_int_31| (Array Int (Array Int Int))) (|v_#memory_int_32| (Array Int (Array Int Int)))) (and (= |v_#memory_int_31| (store |v_#memory_int_75| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (select |v_#memory_int_75| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_int_31| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0)))) (= (store |v_#memory_int_31| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (select |v_#memory_int_31| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4 (select (select |v_#memory_int_32| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4))) |v_#memory_int_32|) (= |#memory_int| (store |v_#memory_int_32| |ULTIMATE.start_main_~#list~0#1.base| (store (select |v_#memory_int_32| |ULTIMATE.start_main_~#list~0#1.base|) 0 (select (select |#memory_int| |ULTIMATE.start_main_~#list~0#1.base|) 0)))))) (<= (+ (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 1) |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_append_#t~malloc9#1.base_15| Int) (|v_ULTIMATE.start_append_#t~mem8#1.offset_15| Int) (|v_#memory_$Pointer$.base_40| (Array Int (Array Int Int))) (|v_#valid_61| (Array Int Int)) (|v_ULTIMATE.start_append_#t~malloc9#1.offset_15| Int) (|v_ULTIMATE.start_append_#t~ite10#1.offset_16| Int) (|v_ULTIMATE.start_append_#t~mem8#1.offset_42| Int) (|v_ULTIMATE.start_append_#t~malloc9#1.base_42| Int) (|v_ULTIMATE.start_append_#t~malloc9#1.offset_42| Int) (|v_#memory_$Pointer$.offset_40| (Array Int (Array Int Int))) (|v_#length_28| (Array Int Int)) (|v_ULTIMATE.start_append_#t~mem7#1.base_15| Int) (|v_ULTIMATE.start_append_#t~mem7#1.offset_42| Int) (|v_ULTIMATE.start_append_#t~ite10#1.base_16| Int) (|v_ULTIMATE.start_append_#t~mem8#1.base_42| Int) (|v_ULTIMATE.start_append_#t~mem7#1.offset_15| Int) (|v_ULTIMATE.start_append_#t~mem8#1.base_15| Int) (|v_ULTIMATE.start_append_#t~mem7#1.base_42| Int)) (and (= |#memory_$Pointer$.offset| (store (store |v_#memory_$Pointer$.offset_40| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (store (select |v_#memory_$Pointer$.offset_40| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.offset_40| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4 |v_ULTIMATE.start_append_#t~ite10#1.offset_16|)) |ULTIMATE.start_main_~#list~0#1.base| (store (select (store |v_#memory_$Pointer$.offset_40| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (store (select |v_#memory_$Pointer$.offset_40| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.offset_40| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4 |v_ULTIMATE.start_append_#t~ite10#1.offset_16|)) |ULTIMATE.start_main_~#list~0#1.base|) 0 0))) (or (and (= (select (select |v_#memory_$Pointer$.base_40| |ULTIMATE.start_main_~#list~0#1.base|) 0) |v_ULTIMATE.start_append_#t~mem7#1.base_15|) (or (not (= (select (select |v_#memory_$Pointer$.base_40| |ULTIMATE.start_main_~#list~0#1.base|) 0) 0)) (not (= (select (select |v_#memory_$Pointer$.offset_40| |ULTIMATE.start_main_~#list~0#1.base|) 0) 0))) (= |v_ULTIMATE.start_append_#t~malloc9#1.offset_42| |v_ULTIMATE.start_append_#t~malloc9#1.offset_15|) (= |#valid| (store |v_#valid_61| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 1)) (= |v_ULTIMATE.start_append_#t~malloc9#1.base_42| |v_ULTIMATE.start_append_#t~malloc9#1.base_15|) (= (select (select (store |v_#memory_$Pointer$.offset_40| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (select |v_#memory_$Pointer$.offset_40| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.offset_40| |ULTIMATE.start_main_~#list~0#1.base|) 0))) |v_ULTIMATE.start_append_#t~mem7#1.base_15|) (+ |v_ULTIMATE.start_append_#t~mem7#1.offset_15| 4)) |v_ULTIMATE.start_append_#t~mem8#1.offset_15|) (= |v_ULTIMATE.start_append_#t~ite10#1.offset_16| |v_ULTIMATE.start_append_#t~mem8#1.offset_15|) (= |v_ULTIMATE.start_append_#t~mem8#1.base_15| |v_ULTIMATE.start_append_#t~ite10#1.base_16|) (= (select (select |v_#memory_$Pointer$.offset_40| |ULTIMATE.start_main_~#list~0#1.base|) 0) |v_ULTIMATE.start_append_#t~mem7#1.offset_15|) (= |#length| (store |v_#length_28| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 8)) (= |v_ULTIMATE.start_append_#t~mem8#1.base_15| (select (select (store |v_#memory_$Pointer$.base_40| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (select |v_#memory_$Pointer$.base_40| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.base_40| |ULTIMATE.start_main_~#list~0#1.base|) 0))) |v_ULTIMATE.start_append_#t~mem7#1.base_15|) (+ |v_ULTIMATE.start_append_#t~mem7#1.offset_15| 4)))) (and (= |v_ULTIMATE.start_append_#t~ite10#1.offset_16| 0) (not (= |v_ULTIMATE.start_append_#t~malloc9#1.base_15| 0)) (= (select (select |v_#memory_$Pointer$.base_40| |ULTIMATE.start_main_~#list~0#1.base|) 0) 0) (= |v_ULTIMATE.start_append_#t~malloc9#1.offset_15| 0) (= |v_ULTIMATE.start_append_#t~mem7#1.offset_42| |v_ULTIMATE.start_append_#t~mem7#1.offset_15|) (= (store (store |v_#valid_61| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 1) |v_ULTIMATE.start_append_#t~malloc9#1.base_15| 1) |#valid|) (= (store (store |v_#length_28| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 8) |v_ULTIMATE.start_append_#t~malloc9#1.base_15| 8) |#length|) (<= (+ |v_ULTIMATE.start_append_#t~malloc9#1.base_15| 1) |#StackHeapBarrier|) (= |v_ULTIMATE.start_append_#t~mem8#1.offset_42| |v_ULTIMATE.start_append_#t~mem8#1.offset_15|) (= |v_ULTIMATE.start_append_#t~ite10#1.base_16| |v_ULTIMATE.start_append_#t~malloc9#1.base_15|) (= |v_ULTIMATE.start_append_#t~mem8#1.base_42| |v_ULTIMATE.start_append_#t~mem8#1.base_15|) (= (select (store |v_#valid_61| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 1) |v_ULTIMATE.start_append_#t~malloc9#1.base_15|) 0) (= (select (select |v_#memory_$Pointer$.offset_40| |ULTIMATE.start_main_~#list~0#1.base|) 0) 0) (= |v_ULTIMATE.start_append_#t~mem7#1.base_42| |v_ULTIMATE.start_append_#t~mem7#1.base_15|))) (= (select |v_#valid_61| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0) (= |#memory_$Pointer$.base| (store (store |v_#memory_$Pointer$.base_40| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (store (select |v_#memory_$Pointer$.base_40| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.base_40| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4 |v_ULTIMATE.start_append_#t~ite10#1.base_16|)) |ULTIMATE.start_main_~#list~0#1.base| (store (select (store |v_#memory_$Pointer$.base_40| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (store (select |v_#memory_$Pointer$.base_40| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.base_40| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4 |v_ULTIMATE.start_append_#t~ite10#1.base_16|)) |ULTIMATE.start_main_~#list~0#1.base|) 0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)))))) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 0)))' at error location [2023-11-12 00:14:04,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:14:04,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:14:04,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-12 00:14:04,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100331083] [2023-11-12 00:14:04,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:14:04,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 00:14:04,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:04,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 00:14:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-12 00:14:04,947 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:05,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:05,140 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2023-11-12 00:14:05,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 00:14:05,142 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-12 00:14:05,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:05,142 INFO L225 Difference]: With dead ends: 56 [2023-11-12 00:14:05,142 INFO L226 Difference]: Without dead ends: 50 [2023-11-12 00:14:05,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-11-12 00:14:05,144 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:05,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 72 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:14:05,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-12 00:14:05,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2023-11-12 00:14:05,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-11-12 00:14:05,149 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 12 [2023-11-12 00:14:05,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:05,152 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-11-12 00:14:05,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:05,153 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-11-12 00:14:05,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:14:05,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:05,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:05,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-12 00:14:05,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 00:14:05,361 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:14:05,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:05,362 INFO L85 PathProgramCache]: Analyzing trace with hash 988895181, now seen corresponding path program 1 times [2023-11-12 00:14:05,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:05,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24280800] [2023-11-12 00:14:05,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:05,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:05,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:05,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:05,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24280800] [2023-11-12 00:14:05,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24280800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:05,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:05,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:14:05,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070989785] [2023-11-12 00:14:05,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:05,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:14:05,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:05,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:14:05,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:14:05,514 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:05,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:05,615 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2023-11-12 00:14:05,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:14:05,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:14:05,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:05,616 INFO L225 Difference]: With dead ends: 47 [2023-11-12 00:14:05,616 INFO L226 Difference]: Without dead ends: 39 [2023-11-12 00:14:05,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:14:05,618 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:05,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 47 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:14:05,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-12 00:14:05,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-12 00:14:05,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:05,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2023-11-12 00:14:05,623 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 13 [2023-11-12 00:14:05,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:05,624 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2023-11-12 00:14:05,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:05,624 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2023-11-12 00:14:05,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 00:14:05,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:05,625 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:05,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 00:14:05,625 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:14:05,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:05,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1801928143, now seen corresponding path program 1 times [2023-11-12 00:14:05,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:05,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753127352] [2023-11-12 00:14:05,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:05,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:05,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:05,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753127352] [2023-11-12 00:14:05,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753127352] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:14:05,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986394883] [2023-11-12 00:14:05,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:05,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:05,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:05,770 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:05,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:14:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:05,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:14:05,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:05,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:05,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:14:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:06,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986394883] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:14:06,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [53792004] [2023-11-12 00:14:06,041 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-12 00:14:06,041 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:14:06,042 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:14:06,042 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:14:06,042 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:14:07,683 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:14:13,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [53792004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:13,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:14:13,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 5, 5] total 17 [2023-11-12 00:14:13,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885792684] [2023-11-12 00:14:13,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:13,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:14:13,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:13,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:14:13,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-11-12 00:14:13,454 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:15,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:15,372 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2023-11-12 00:14:15,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:14:15,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-12 00:14:15,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:15,374 INFO L225 Difference]: With dead ends: 43 [2023-11-12 00:14:15,374 INFO L226 Difference]: Without dead ends: 42 [2023-11-12 00:14:15,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-11-12 00:14:15,375 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:15,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 15 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 1 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 00:14:15,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-12 00:14:15,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2023-11-12 00:14:15,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:15,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2023-11-12 00:14:15,384 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 16 [2023-11-12 00:14:15,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:15,384 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2023-11-12 00:14:15,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:15,385 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2023-11-12 00:14:15,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-12 00:14:15,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:15,385 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:15,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:15,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-12 00:14:15,594 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:14:15,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:15,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1555012041, now seen corresponding path program 1 times [2023-11-12 00:14:15,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:15,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51206553] [2023-11-12 00:14:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:15,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:15,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:15,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51206553] [2023-11-12 00:14:15,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51206553] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:14:15,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151313936] [2023-11-12 00:14:15,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:15,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:15,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:15,765 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:15,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:14:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:15,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 00:14:15,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:15,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:14:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:16,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151313936] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:14:16,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2063084308] [2023-11-12 00:14:16,120 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-12 00:14:16,120 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:14:16,121 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:14:16,121 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:14:16,121 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:14:21,565 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:14:23,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2063084308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:23,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:14:23,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 7, 7] total 25 [2023-11-12 00:14:23,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956823007] [2023-11-12 00:14:23,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:23,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 00:14:23,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:23,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 00:14:23,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=536, Unknown=1, NotChecked=0, Total=650 [2023-11-12 00:14:23,178 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:23,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:23,871 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2023-11-12 00:14:23,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 00:14:23,872 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-12 00:14:23,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:23,873 INFO L225 Difference]: With dead ends: 38 [2023-11-12 00:14:23,873 INFO L226 Difference]: Without dead ends: 31 [2023-11-12 00:14:23,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=121, Invalid=580, Unknown=1, NotChecked=0, Total=702 [2023-11-12 00:14:23,874 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:23,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 00:14:23,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-12 00:14:23,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-12 00:14:23,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2023-11-12 00:14:23,884 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 19 [2023-11-12 00:14:23,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:23,884 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2023-11-12 00:14:23,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:23,885 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2023-11-12 00:14:23,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-12 00:14:23,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:23,885 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1] [2023-11-12 00:14:23,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:24,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-12 00:14:24,092 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:14:24,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:24,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1481071352, now seen corresponding path program 2 times [2023-11-12 00:14:24,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:24,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79949589] [2023-11-12 00:14:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:24,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:24,425 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:24,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:24,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79949589] [2023-11-12 00:14:24,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79949589] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:14:24,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740454060] [2023-11-12 00:14:24,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:14:24,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:24,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:24,428 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:24,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 00:14:26,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-12 00:14:26,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:14:26,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-12 00:14:26,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:26,138 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:26,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:14:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:26,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740454060] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:14:26,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1088796840] [2023-11-12 00:14:26,310 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-12 00:14:26,311 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:14:26,311 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:14:26,311 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:14:26,311 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:14:27,473 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:14:30,589 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1647#(and (exists ((|v_#memory_int_31| (Array Int (Array Int Int))) (|v_#memory_int_32| (Array Int (Array Int Int))) (|v_#memory_int_141| (Array Int (Array Int Int)))) (and (= (store |v_#memory_int_31| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (select |v_#memory_int_31| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4 (select (select |v_#memory_int_32| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4))) |v_#memory_int_32|) (= (store |v_#memory_int_141| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (select |v_#memory_int_141| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_int_31| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0))) |v_#memory_int_31|) (= |#memory_int| (store |v_#memory_int_32| |ULTIMATE.start_main_~#list~0#1.base| (store (select |v_#memory_int_32| |ULTIMATE.start_main_~#list~0#1.base|) 0 (select (select |#memory_int| |ULTIMATE.start_main_~#list~0#1.base|) 0)))))) (<= ~c~0 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#list~0#1.offset| 0) (exists ((|v_ULTIMATE.start_append_#t~malloc9#1.base_15| Int) (|v_#memory_$Pointer$.base_66| (Array Int (Array Int Int))) (|v_ULTIMATE.start_append_#t~mem8#1.offset_15| Int) (|v_#valid_95| (Array Int Int)) (|v_ULTIMATE.start_append_#t~malloc9#1.offset_15| Int) (|v_ULTIMATE.start_append_#t~ite10#1.offset_16| Int) (|v_ULTIMATE.start_append_#t~mem8#1.offset_81| Int) (|v_#length_51| (Array Int Int)) (|v_ULTIMATE.start_append_#t~mem7#1.offset_81| Int) (|v_ULTIMATE.start_append_#t~mem8#1.base_81| Int) (|v_ULTIMATE.start_append_#t~malloc9#1.offset_81| Int) (|v_#memory_$Pointer$.offset_66| (Array Int (Array Int Int))) (|v_ULTIMATE.start_append_#t~mem7#1.base_15| Int) (|v_ULTIMATE.start_append_#t~ite10#1.base_16| Int) (|v_ULTIMATE.start_append_#t~malloc9#1.base_81| Int) (|v_ULTIMATE.start_append_#t~mem7#1.base_81| Int) (|v_ULTIMATE.start_append_#t~mem7#1.offset_15| Int) (|v_ULTIMATE.start_append_#t~mem8#1.base_15| Int)) (and (or (and (= |v_ULTIMATE.start_append_#t~malloc9#1.base_81| |v_ULTIMATE.start_append_#t~malloc9#1.base_15|) (= |#valid| (store |v_#valid_95| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 1)) (= |v_ULTIMATE.start_append_#t~mem8#1.offset_15| (select (select (store |v_#memory_$Pointer$.offset_66| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (select |v_#memory_$Pointer$.offset_66| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.offset_66| |ULTIMATE.start_main_~#list~0#1.base|) 0))) |v_ULTIMATE.start_append_#t~mem7#1.base_15|) (+ |v_ULTIMATE.start_append_#t~mem7#1.offset_15| 4))) (= |v_ULTIMATE.start_append_#t~ite10#1.offset_16| |v_ULTIMATE.start_append_#t~mem8#1.offset_15|) (= |v_ULTIMATE.start_append_#t~mem8#1.base_15| (select (select (store |v_#memory_$Pointer$.base_66| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (select |v_#memory_$Pointer$.base_66| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.base_66| |ULTIMATE.start_main_~#list~0#1.base|) 0))) |v_ULTIMATE.start_append_#t~mem7#1.base_15|) (+ |v_ULTIMATE.start_append_#t~mem7#1.offset_15| 4))) (= |v_ULTIMATE.start_append_#t~mem8#1.base_15| |v_ULTIMATE.start_append_#t~ite10#1.base_16|) (= (select (select |v_#memory_$Pointer$.offset_66| |ULTIMATE.start_main_~#list~0#1.base|) 0) |v_ULTIMATE.start_append_#t~mem7#1.offset_15|) (= (select (select |v_#memory_$Pointer$.base_66| |ULTIMATE.start_main_~#list~0#1.base|) 0) |v_ULTIMATE.start_append_#t~mem7#1.base_15|) (= |v_ULTIMATE.start_append_#t~malloc9#1.offset_81| |v_ULTIMATE.start_append_#t~malloc9#1.offset_15|) (= (store |v_#length_51| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 8) |#length|) (or (not (= (select (select |v_#memory_$Pointer$.offset_66| |ULTIMATE.start_main_~#list~0#1.base|) 0) 0)) (not (= (select (select |v_#memory_$Pointer$.base_66| |ULTIMATE.start_main_~#list~0#1.base|) 0) 0)))) (and (= |v_ULTIMATE.start_append_#t~mem8#1.offset_81| |v_ULTIMATE.start_append_#t~mem8#1.offset_15|) (= |v_ULTIMATE.start_append_#t~mem8#1.base_81| |v_ULTIMATE.start_append_#t~mem8#1.base_15|) (= |v_ULTIMATE.start_append_#t~ite10#1.offset_16| 0) (= (select (store |v_#valid_95| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 1) |v_ULTIMATE.start_append_#t~malloc9#1.base_15|) 0) (not (= |v_ULTIMATE.start_append_#t~malloc9#1.base_15| 0)) (= |v_ULTIMATE.start_append_#t~malloc9#1.offset_15| 0) (= (store (store |v_#length_51| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 8) |v_ULTIMATE.start_append_#t~malloc9#1.base_15| 8) |#length|) (= (select (select |v_#memory_$Pointer$.offset_66| |ULTIMATE.start_main_~#list~0#1.base|) 0) 0) (= (select (select |v_#memory_$Pointer$.base_66| |ULTIMATE.start_main_~#list~0#1.base|) 0) 0) (= |v_ULTIMATE.start_append_#t~mem7#1.base_81| |v_ULTIMATE.start_append_#t~mem7#1.base_15|) (<= (+ |v_ULTIMATE.start_append_#t~malloc9#1.base_15| 1) |#StackHeapBarrier|) (= |#valid| (store (store |v_#valid_95| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 1) |v_ULTIMATE.start_append_#t~malloc9#1.base_15| 1)) (= |v_ULTIMATE.start_append_#t~ite10#1.base_16| |v_ULTIMATE.start_append_#t~malloc9#1.base_15|) (= |v_ULTIMATE.start_append_#t~mem7#1.offset_81| |v_ULTIMATE.start_append_#t~mem7#1.offset_15|))) (= |#memory_$Pointer$.offset| (store (store |v_#memory_$Pointer$.offset_66| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (store (select |v_#memory_$Pointer$.offset_66| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.offset_66| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4 |v_ULTIMATE.start_append_#t~ite10#1.offset_16|)) |ULTIMATE.start_main_~#list~0#1.base| (store (select (store |v_#memory_$Pointer$.offset_66| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (store (select |v_#memory_$Pointer$.offset_66| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.offset_66| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4 |v_ULTIMATE.start_append_#t~ite10#1.offset_16|)) |ULTIMATE.start_main_~#list~0#1.base|) 0 0))) (= (select |v_#valid_95| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0) (= (store (store |v_#memory_$Pointer$.base_66| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (store (select |v_#memory_$Pointer$.base_66| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.base_66| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4 |v_ULTIMATE.start_append_#t~ite10#1.base_16|)) |ULTIMATE.start_main_~#list~0#1.base| (store (select (store |v_#memory_$Pointer$.base_66| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (store (select |v_#memory_$Pointer$.base_66| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.base_66| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4 |v_ULTIMATE.start_append_#t~ite10#1.base_16|)) |ULTIMATE.start_main_~#list~0#1.base|) 0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0))) |#memory_$Pointer$.base|))) (= |ULTIMATE.start_main_~length~0#1| |ULTIMATE.start_main_#t~post12#1|) (<= 2 |ULTIMATE.start_main_~#list~0#1.base|) (<= 2147483647 |ULTIMATE.start_main_#t~post12#1|) (<= 1 ~c~0) (<= (+ (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 1) |#StackHeapBarrier|) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 0)))' at error location [2023-11-12 00:14:30,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:14:30,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:14:30,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-11-12 00:14:30,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646300352] [2023-11-12 00:14:30,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:14:30,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-12 00:14:30,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:30,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-12 00:14:30,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2023-11-12 00:14:30,592 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:30,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:30,999 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2023-11-12 00:14:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-12 00:14:30,999 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-12 00:14:31,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:31,000 INFO L225 Difference]: With dead ends: 68 [2023-11-12 00:14:31,000 INFO L226 Difference]: Without dead ends: 67 [2023-11-12 00:14:31,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 61 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=347, Invalid=1135, Unknown=0, NotChecked=0, Total=1482 [2023-11-12 00:14:31,002 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 53 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:31,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 43 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:14:31,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-12 00:14:31,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-11-12 00:14:31,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:31,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2023-11-12 00:14:31,022 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 30 [2023-11-12 00:14:31,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:31,023 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2023-11-12 00:14:31,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:31,023 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2023-11-12 00:14:31,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-12 00:14:31,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:31,026 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1] [2023-11-12 00:14:31,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:31,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-12 00:14:31,234 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:14:31,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:31,234 INFO L85 PathProgramCache]: Analyzing trace with hash -2073223408, now seen corresponding path program 3 times [2023-11-12 00:14:31,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:31,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211465790] [2023-11-12 00:14:31,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:31,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:32,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:32,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211465790] [2023-11-12 00:14:32,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211465790] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:14:32,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124489443] [2023-11-12 00:14:32,241 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 00:14:32,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:32,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:32,243 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:32,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 00:14:32,668 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 00:14:32,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:14:32,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-12 00:14:32,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:32,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:14:33,442 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:33,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124489443] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:14:33,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1899658098] [2023-11-12 00:14:33,445 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-12 00:14:33,445 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:14:33,445 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:14:33,446 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:14:33,446 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:14:34,530 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:14:40,424 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2267#(and (<= ~c~0 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#list~0#1.offset| 0) (= |ULTIMATE.start_main_~length~0#1| |ULTIMATE.start_main_#t~post12#1|) (<= 2 |ULTIMATE.start_main_~#list~0#1.base|) (<= 2147483647 |ULTIMATE.start_main_#t~post12#1|) (<= 1 ~c~0) (exists ((|v_ULTIMATE.start_append_#t~malloc9#1.base_15| Int) (|v_ULTIMATE.start_append_#t~mem8#1.offset_15| Int) (|v_#memory_$Pointer$.base_81| (Array Int (Array Int Int))) (|v_#valid_111| (Array Int Int)) (|v_ULTIMATE.start_append_#t~malloc9#1.offset_15| Int) (|v_ULTIMATE.start_append_#t~ite10#1.offset_16| Int) (|v_ULTIMATE.start_append_#t~mem7#1.offset_118| Int) (|v_ULTIMATE.start_append_#t~mem8#1.base_118| Int) (|v_ULTIMATE.start_append_#t~mem8#1.offset_118| Int) (|v_#memory_$Pointer$.offset_81| (Array Int (Array Int Int))) (|v_ULTIMATE.start_append_#t~malloc9#1.base_118| Int) (|v_ULTIMATE.start_append_#t~malloc9#1.offset_118| Int) (|v_ULTIMATE.start_append_#t~mem7#1.base_15| Int) (|v_#length_67| (Array Int Int)) (|v_ULTIMATE.start_append_#t~ite10#1.base_16| Int) (|v_ULTIMATE.start_append_#t~mem7#1.base_118| Int) (|v_ULTIMATE.start_append_#t~mem7#1.offset_15| Int) (|v_ULTIMATE.start_append_#t~mem8#1.base_15| Int)) (and (= (select |v_#valid_111| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0) (= |#memory_$Pointer$.offset| (store (store |v_#memory_$Pointer$.offset_81| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (store (select |v_#memory_$Pointer$.offset_81| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.offset_81| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4 |v_ULTIMATE.start_append_#t~ite10#1.offset_16|)) |ULTIMATE.start_main_~#list~0#1.base| (store (select (store |v_#memory_$Pointer$.offset_81| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (store (select |v_#memory_$Pointer$.offset_81| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.offset_81| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4 |v_ULTIMATE.start_append_#t~ite10#1.offset_16|)) |ULTIMATE.start_main_~#list~0#1.base|) 0 0))) (or (and (= |v_ULTIMATE.start_append_#t~mem8#1.base_15| (select (select (store |v_#memory_$Pointer$.base_81| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (select |v_#memory_$Pointer$.base_81| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.base_81| |ULTIMATE.start_main_~#list~0#1.base|) 0))) |v_ULTIMATE.start_append_#t~mem7#1.base_15|) (+ |v_ULTIMATE.start_append_#t~mem7#1.offset_15| 4))) (or (not (= (select (select |v_#memory_$Pointer$.offset_81| |ULTIMATE.start_main_~#list~0#1.base|) 0) 0)) (not (= (select (select |v_#memory_$Pointer$.base_81| |ULTIMATE.start_main_~#list~0#1.base|) 0) 0))) (= (store |v_#valid_111| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 1) |#valid|) (= |v_ULTIMATE.start_append_#t~ite10#1.offset_16| |v_ULTIMATE.start_append_#t~mem8#1.offset_15|) (= |v_ULTIMATE.start_append_#t~mem8#1.base_15| |v_ULTIMATE.start_append_#t~ite10#1.base_16|) (= |v_ULTIMATE.start_append_#t~mem7#1.base_15| (select (select |v_#memory_$Pointer$.base_81| |ULTIMATE.start_main_~#list~0#1.base|) 0)) (= (store |v_#length_67| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 8) |#length|) (= |v_ULTIMATE.start_append_#t~mem7#1.offset_15| (select (select |v_#memory_$Pointer$.offset_81| |ULTIMATE.start_main_~#list~0#1.base|) 0)) (= |v_ULTIMATE.start_append_#t~mem8#1.offset_15| (select (select (store |v_#memory_$Pointer$.offset_81| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (select |v_#memory_$Pointer$.offset_81| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.offset_81| |ULTIMATE.start_main_~#list~0#1.base|) 0))) |v_ULTIMATE.start_append_#t~mem7#1.base_15|) (+ |v_ULTIMATE.start_append_#t~mem7#1.offset_15| 4))) (= |v_ULTIMATE.start_append_#t~malloc9#1.base_15| |v_ULTIMATE.start_append_#t~malloc9#1.base_118|) (= |v_ULTIMATE.start_append_#t~malloc9#1.offset_118| |v_ULTIMATE.start_append_#t~malloc9#1.offset_15|)) (and (= |v_ULTIMATE.start_append_#t~mem7#1.offset_118| |v_ULTIMATE.start_append_#t~mem7#1.offset_15|) (= |v_ULTIMATE.start_append_#t~ite10#1.offset_16| 0) (= |v_ULTIMATE.start_append_#t~mem7#1.base_118| |v_ULTIMATE.start_append_#t~mem7#1.base_15|) (not (= |v_ULTIMATE.start_append_#t~malloc9#1.base_15| 0)) (= |v_ULTIMATE.start_append_#t~malloc9#1.offset_15| 0) (= |v_ULTIMATE.start_append_#t~mem8#1.base_15| |v_ULTIMATE.start_append_#t~mem8#1.base_118|) (<= (+ |v_ULTIMATE.start_append_#t~malloc9#1.base_15| 1) |#StackHeapBarrier|) (= (select (select |v_#memory_$Pointer$.base_81| |ULTIMATE.start_main_~#list~0#1.base|) 0) 0) (= (store (store |v_#valid_111| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 1) |v_ULTIMATE.start_append_#t~malloc9#1.base_15| 1) |#valid|) (= |v_ULTIMATE.start_append_#t~ite10#1.base_16| |v_ULTIMATE.start_append_#t~malloc9#1.base_15|) (= (store (store |v_#length_67| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 8) |v_ULTIMATE.start_append_#t~malloc9#1.base_15| 8) |#length|) (= (select (select |v_#memory_$Pointer$.offset_81| |ULTIMATE.start_main_~#list~0#1.base|) 0) 0) (= |v_ULTIMATE.start_append_#t~mem8#1.offset_118| |v_ULTIMATE.start_append_#t~mem8#1.offset_15|) (= (select (store |v_#valid_111| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 1) |v_ULTIMATE.start_append_#t~malloc9#1.base_15|) 0))) (= (store (store |v_#memory_$Pointer$.base_81| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (store (select |v_#memory_$Pointer$.base_81| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.base_81| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4 |v_ULTIMATE.start_append_#t~ite10#1.base_16|)) |ULTIMATE.start_main_~#list~0#1.base| (store (select (store |v_#memory_$Pointer$.base_81| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (store (select |v_#memory_$Pointer$.base_81| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_$Pointer$.base_81| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4 |v_ULTIMATE.start_append_#t~ite10#1.base_16|)) |ULTIMATE.start_main_~#list~0#1.base|) 0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0))) |#memory_$Pointer$.base|))) (<= (+ (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 1) |#StackHeapBarrier|) (exists ((|v_#memory_int_31| (Array Int (Array Int Int))) (|v_#memory_int_32| (Array Int (Array Int Int))) (|v_#memory_int_200| (Array Int (Array Int Int)))) (and (= (store |v_#memory_int_31| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (select |v_#memory_int_31| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4 (select (select |v_#memory_int_32| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 4))) |v_#memory_int_32|) (= |v_#memory_int_31| (store |v_#memory_int_200| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) (store (select |v_#memory_int_200| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0 (select (select |v_#memory_int_31| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0)) 0)))) (= |#memory_int| (store |v_#memory_int_32| |ULTIMATE.start_main_~#list~0#1.base| (store (select |v_#memory_int_32| |ULTIMATE.start_main_~#list~0#1.base|) 0 (select (select |#memory_int| |ULTIMATE.start_main_~#list~0#1.base|) 0)))))) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) 0) 0)))' at error location [2023-11-12 00:14:40,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:14:40,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:14:40,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 46 [2023-11-12 00:14:40,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876175917] [2023-11-12 00:14:40,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:14:40,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-12 00:14:40,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:40,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-12 00:14:40,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=614, Invalid=2142, Unknown=0, NotChecked=0, Total=2756 [2023-11-12 00:14:40,429 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 48 states, 47 states have (on average 2.9361702127659575) internal successors, (138), 47 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:41,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:41,486 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2023-11-12 00:14:41,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-12 00:14:41,487 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.9361702127659575) internal successors, (138), 47 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-12 00:14:41,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:41,488 INFO L225 Difference]: With dead ends: 140 [2023-11-12 00:14:41,488 INFO L226 Difference]: Without dead ends: 139 [2023-11-12 00:14:41,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 145 SyntacticMatches, 22 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2920 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1397, Invalid=4153, Unknown=0, NotChecked=0, Total=5550 [2023-11-12 00:14:41,492 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 117 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:41,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 96 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:14:41,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-12 00:14:41,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2023-11-12 00:14:41,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.0072463768115942) internal successors, (139), 138 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:41,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2023-11-12 00:14:41,546 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 66 [2023-11-12 00:14:41,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:41,546 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2023-11-12 00:14:41,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.9361702127659575) internal successors, (138), 47 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:41,547 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2023-11-12 00:14:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-12 00:14:41,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:41,550 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 1, 1] [2023-11-12 00:14:41,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:41,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-12 00:14:41,764 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:14:41,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:41,765 INFO L85 PathProgramCache]: Analyzing trace with hash -321117376, now seen corresponding path program 4 times [2023-11-12 00:14:41,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:41,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856708817] [2023-11-12 00:14:41,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:41,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:45,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:45,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856708817] [2023-11-12 00:14:45,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856708817] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:14:45,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202942810] [2023-11-12 00:14:45,400 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-12 00:14:45,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:45,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:45,401 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:45,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5e3a41-c7a6-484f-a3c9-e202c6f3794f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 00:14:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:46,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-12 00:14:46,147 INFO L285 TraceCheckSpWp]: Computing forward predicates...