./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fscanf_multiply_08_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fscanf_multiply_08_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7f9c3cc28dda067824ba301477f1c03bcac7a80158bb9362e7546f3bd18e0377 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:49:47,215 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:49:47,288 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-21 19:49:47,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:49:47,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:49:47,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:49:47,322 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:49:47,323 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:49:47,323 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:49:47,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:49:47,325 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:49:47,325 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:49:47,326 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:49:47,326 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:49:47,327 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:49:47,328 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:49:47,328 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:49:47,329 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:49:47,329 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:49:47,330 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:49:47,331 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:49:47,331 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:49:47,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:49:47,333 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:49:47,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:49:47,334 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:49:47,335 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:49:47,335 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:49:47,336 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:49:47,336 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 19:49:47,337 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:49:47,338 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:49:47,338 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:49:47,339 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:49:47,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:49:47,340 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:49:47,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:49:47,341 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:49:47,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:49:47,342 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:49:47,343 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:49:47,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:49:47,344 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:49:47,344 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:49:47,344 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:49:47,345 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:49:47,345 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_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f9c3cc28dda067824ba301477f1c03bcac7a80158bb9362e7546f3bd18e0377 [2023-11-21 19:49:47,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:49:47,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:49:47,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:49:47,616 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:49:47,618 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:49:47,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fscanf_multiply_08_good.i [2023-11-21 19:49:50,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:49:51,216 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:49:51,218 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fscanf_multiply_08_good.i [2023-11-21 19:49:51,253 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/data/fe5b82228/fd109faed0ed4b19b9a86f58f41090ba/FLAG4d30d5a50 [2023-11-21 19:49:51,272 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/data/fe5b82228/fd109faed0ed4b19b9a86f58f41090ba [2023-11-21 19:49:51,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:49:51,282 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:49:51,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:49:51,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:49:51,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:49:51,292 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:49:51" (1/1) ... [2023-11-21 19:49:51,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d39e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:51, skipping insertion in model container [2023-11-21 19:49:51,293 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:49:51" (1/1) ... [2023-11-21 19:49:51,383 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:49:51,869 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 19:49:52,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:49:52,533 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:49:52,560 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 19:49:52,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:49:52,743 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:52,744 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:52,744 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:52,744 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:52,745 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:52,753 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:49:52,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:52 WrapperNode [2023-11-21 19:49:52,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:49:52,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:49:52,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:49:52,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:49:52,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:52" (1/1) ... [2023-11-21 19:49:52,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:52" (1/1) ... [2023-11-21 19:49:52,873 INFO L138 Inliner]: procedures = 505, calls = 93, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 143 [2023-11-21 19:49:52,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:49:52,880 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:49:52,881 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:49:52,881 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:49:52,891 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:52" (1/1) ... [2023-11-21 19:49:52,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:52" (1/1) ... [2023-11-21 19:49:52,916 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:52" (1/1) ... [2023-11-21 19:49:52,916 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:52" (1/1) ... [2023-11-21 19:49:52,924 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:52" (1/1) ... [2023-11-21 19:49:52,941 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:52" (1/1) ... [2023-11-21 19:49:52,943 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:52" (1/1) ... [2023-11-21 19:49:52,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:52" (1/1) ... [2023-11-21 19:49:52,948 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:49:52,949 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:49:52,950 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:49:52,950 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:49:52,951 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:52" (1/1) ... [2023-11-21 19:49:52,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:49:52,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:49:52,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:49:53,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:49:53,036 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2023-11-21 19:49:53,038 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2023-11-21 19:49:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 19:49:53,038 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 19:49:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:49:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:49:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:49:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:49:53,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:49:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsTrue [2023-11-21 19:49:53,040 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsTrue [2023-11-21 19:49:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:49:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsFalse [2023-11-21 19:49:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsFalse [2023-11-21 19:49:53,041 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 19:49:53,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:49:53,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:49:53,241 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:49:53,243 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:49:53,499 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:49:53,597 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:49:53,601 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:49:53,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:49:53 BoogieIcfgContainer [2023-11-21 19:49:53,604 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:49:53,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:49:53,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:49:53,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:49:53,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:49:51" (1/3) ... [2023-11-21 19:49:53,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5cfadb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:49:53, skipping insertion in model container [2023-11-21 19:49:53,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:52" (2/3) ... [2023-11-21 19:49:53,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5cfadb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:49:53, skipping insertion in model container [2023-11-21 19:49:53,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:49:53" (3/3) ... [2023-11-21 19:49:53,615 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fscanf_multiply_08_good.i [2023-11-21 19:49:53,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:49:53,635 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-21 19:49:53,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:49:53,707 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;@2cff6eee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:49:53,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-21 19:49:53,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 54 states have internal predecessors, (61), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-21 19:49:53,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-21 19:49:53,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:53,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:53,723 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)] === [2023-11-21 19:49:53,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:53,733 INFO L85 PathProgramCache]: Analyzing trace with hash -859659810, now seen corresponding path program 1 times [2023-11-21 19:49:53,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:53,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389339191] [2023-11-21 19:49:53,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:53,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:49:54,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:54,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389339191] [2023-11-21 19:49:54,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389339191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:54,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:54,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:49:54,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275767372] [2023-11-21 19:49:54,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:54,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:49:54,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:54,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:49:54,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:49:54,339 INFO L87 Difference]: Start difference. First operand has 73 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 54 states have internal predecessors, (61), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-21 19:49:54,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:54,498 INFO L93 Difference]: Finished difference Result 74 states and 98 transitions. [2023-11-21 19:49:54,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:49:54,501 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2023-11-21 19:49:54,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:54,511 INFO L225 Difference]: With dead ends: 74 [2023-11-21 19:49:54,511 INFO L226 Difference]: Without dead ends: 67 [2023-11-21 19:49:54,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:49:54,517 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 8 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:54,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 291 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:49:54,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-21 19:49:54,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2023-11-21 19:49:54,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 49 states have internal predecessors, (54), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-21 19:49:54,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2023-11-21 19:49:54,562 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 17 [2023-11-21 19:49:54,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:54,563 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2023-11-21 19:49:54,564 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-21 19:49:54,564 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2023-11-21 19:49:54,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 19:49:54,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:54,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:54,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:49:54,566 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 19:49:54,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:54,567 INFO L85 PathProgramCache]: Analyzing trace with hash -879650262, now seen corresponding path program 1 times [2023-11-21 19:49:54,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:54,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050706538] [2023-11-21 19:49:54,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:54,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:54,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:49:54,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:54,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050706538] [2023-11-21 19:49:54,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050706538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:54,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:54,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:49:54,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954213726] [2023-11-21 19:49:54,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:54,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:49:54,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:54,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:49:54,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:49:54,785 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-21 19:49:54,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:54,872 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2023-11-21 19:49:54,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:49:54,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 18 [2023-11-21 19:49:54,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:54,874 INFO L225 Difference]: With dead ends: 66 [2023-11-21 19:49:54,875 INFO L226 Difference]: Without dead ends: 65 [2023-11-21 19:49:54,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:49:54,877 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:54,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 265 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:49:54,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-21 19:49:54,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-11-21 19:49:54,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 39 states have (on average 1.358974358974359) internal successors, (53), 48 states have internal predecessors, (53), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-21 19:49:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 85 transitions. [2023-11-21 19:49:54,894 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 85 transitions. Word has length 18 [2023-11-21 19:49:54,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:54,894 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 85 transitions. [2023-11-21 19:49:54,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-21 19:49:54,895 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 85 transitions. [2023-11-21 19:49:54,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-21 19:49:54,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:54,896 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:54,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:49:54,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 19:49:54,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:54,897 INFO L85 PathProgramCache]: Analyzing trace with hash 832630097, now seen corresponding path program 1 times [2023-11-21 19:49:54,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:54,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914800060] [2023-11-21 19:49:54,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:54,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:55,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-21 19:49:55,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:55,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914800060] [2023-11-21 19:49:55,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914800060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:55,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:55,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:49:55,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210957312] [2023-11-21 19:49:55,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:55,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:49:55,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:55,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:49:55,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:49:55,144 INFO L87 Difference]: Start difference. First operand 65 states and 85 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-21 19:49:55,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:55,269 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2023-11-21 19:49:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:49:55,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 28 [2023-11-21 19:49:55,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:55,278 INFO L225 Difference]: With dead ends: 66 [2023-11-21 19:49:55,279 INFO L226 Difference]: Without dead ends: 65 [2023-11-21 19:49:55,279 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 [2023-11-21 19:49:55,287 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 8 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:55,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 252 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:49:55,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-21 19:49:55,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2023-11-21 19:49:55,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 47 states have internal predecessors, (52), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-21 19:49:55,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2023-11-21 19:49:55,313 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 28 [2023-11-21 19:49:55,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:55,314 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2023-11-21 19:49:55,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-21 19:49:55,314 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2023-11-21 19:49:55,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-21 19:49:55,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:55,318 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:55,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:49:55,319 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 19:49:55,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:55,319 INFO L85 PathProgramCache]: Analyzing trace with hash 41729338, now seen corresponding path program 1 times [2023-11-21 19:49:55,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:55,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722880632] [2023-11-21 19:49:55,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:55,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:55,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-21 19:49:55,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:55,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722880632] [2023-11-21 19:49:55,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722880632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:55,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:55,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:49:55,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211804214] [2023-11-21 19:49:55,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:55,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:49:55,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:55,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:49:55,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:49:55,565 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-21 19:49:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:55,648 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2023-11-21 19:49:55,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:49:55,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2023-11-21 19:49:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:55,650 INFO L225 Difference]: With dead ends: 64 [2023-11-21 19:49:55,651 INFO L226 Difference]: Without dead ends: 63 [2023-11-21 19:49:55,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:49:55,653 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:55,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 258 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:49:55,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-21 19:49:55,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-21 19:49:55,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 46 states have internal predecessors, (51), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-21 19:49:55,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 83 transitions. [2023-11-21 19:49:55,664 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 83 transitions. Word has length 29 [2023-11-21 19:49:55,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:55,665 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 83 transitions. [2023-11-21 19:49:55,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-21 19:49:55,665 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 83 transitions. [2023-11-21 19:49:55,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-21 19:49:55,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:55,667 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:55,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:49:55,668 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 19:49:55,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:55,668 INFO L85 PathProgramCache]: Analyzing trace with hash 226315838, now seen corresponding path program 1 times [2023-11-21 19:49:55,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:55,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936037589] [2023-11-21 19:49:55,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:55,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-21 19:49:55,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:55,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936037589] [2023-11-21 19:49:55,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936037589] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:49:55,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864742267] [2023-11-21 19:49:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:55,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:49:55,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:49:55,772 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:49:55,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:49:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:55,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:49:55,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:49:55,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 19:49:55,952 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:49:55,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864742267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:55,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:49:55,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-21 19:49:55,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769336445] [2023-11-21 19:49:55,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:55,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:49:55,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:55,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:49:55,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:49:55,955 INFO L87 Difference]: Start difference. First operand 63 states and 83 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 19:49:56,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:56,014 INFO L93 Difference]: Finished difference Result 86 states and 111 transitions. [2023-11-21 19:49:56,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:49:56,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 38 [2023-11-21 19:49:56,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:56,017 INFO L225 Difference]: With dead ends: 86 [2023-11-21 19:49:56,017 INFO L226 Difference]: Without dead ends: 72 [2023-11-21 19:49:56,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:49:56,018 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 5 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:56,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 134 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:49:56,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-21 19:49:56,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2023-11-21 19:49:56,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 43 states have (on average 1.302325581395349) internal successors, (56), 49 states have internal predecessors, (56), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-21 19:49:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 90 transitions. [2023-11-21 19:49:56,030 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 90 transitions. Word has length 38 [2023-11-21 19:49:56,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:56,031 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 90 transitions. [2023-11-21 19:49:56,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 19:49:56,031 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 90 transitions. [2023-11-21 19:49:56,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-21 19:49:56,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:56,033 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:56,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:49:56,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:49:56,259 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)] === [2023-11-21 19:49:56,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:56,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1574143471, now seen corresponding path program 1 times [2023-11-21 19:49:56,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:56,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618969669] [2023-11-21 19:49:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:56,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:56,368 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-21 19:49:56,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:56,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618969669] [2023-11-21 19:49:56,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618969669] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:49:56,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68013278] [2023-11-21 19:49:56,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:56,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:49:56,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:49:56,370 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:49:56,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 19:49:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:56,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:49:56,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:49:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 19:49:56,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:49:56,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68013278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:56,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:49:56,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-21 19:49:56,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983498434] [2023-11-21 19:49:56,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:56,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:49:56,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:56,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:49:56,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:49:56,523 INFO L87 Difference]: Start difference. First operand 68 states and 90 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 19:49:56,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:56,554 INFO L93 Difference]: Finished difference Result 68 states and 90 transitions. [2023-11-21 19:49:56,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:49:56,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 39 [2023-11-21 19:49:56,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:56,556 INFO L225 Difference]: With dead ends: 68 [2023-11-21 19:49:56,556 INFO L226 Difference]: Without dead ends: 67 [2023-11-21 19:49:56,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:49:56,557 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:56,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 122 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:49:56,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-21 19:49:56,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-11-21 19:49:56,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 48 states have internal predecessors, (55), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-21 19:49:56,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 89 transitions. [2023-11-21 19:49:56,566 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 89 transitions. Word has length 39 [2023-11-21 19:49:56,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:56,567 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 89 transitions. [2023-11-21 19:49:56,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 19:49:56,567 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 89 transitions. [2023-11-21 19:49:56,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-21 19:49:56,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:56,569 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:56,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 19:49:56,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:49:56,790 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 19:49:56,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:56,790 INFO L85 PathProgramCache]: Analyzing trace with hash -701417770, now seen corresponding path program 1 times [2023-11-21 19:49:56,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:56,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618613986] [2023-11-21 19:49:56,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:56,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:56,951 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-21 19:49:56,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:56,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618613986] [2023-11-21 19:49:56,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618613986] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:49:56,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895064261] [2023-11-21 19:49:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:56,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:49:56,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:49:56,967 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:49:56,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 19:49:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:57,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:49:57,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:49:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 19:49:57,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:49:57,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895064261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:57,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:49:57,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-21 19:49:57,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412182524] [2023-11-21 19:49:57,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:57,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:49:57,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:57,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:49:57,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:49:57,136 INFO L87 Difference]: Start difference. First operand 67 states and 89 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 19:49:57,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:57,168 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2023-11-21 19:49:57,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:49:57,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 41 [2023-11-21 19:49:57,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:57,170 INFO L225 Difference]: With dead ends: 86 [2023-11-21 19:49:57,170 INFO L226 Difference]: Without dead ends: 66 [2023-11-21 19:49:57,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:49:57,172 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 2 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:57,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 138 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:49:57,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-21 19:49:57,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2023-11-21 19:49:57,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 46 states have internal predecessors, (52), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-21 19:49:57,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 86 transitions. [2023-11-21 19:49:57,189 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 86 transitions. Word has length 41 [2023-11-21 19:49:57,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:57,191 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 86 transitions. [2023-11-21 19:49:57,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 19:49:57,191 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 86 transitions. [2023-11-21 19:49:57,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-21 19:49:57,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:57,199 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:57,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 19:49:57,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-21 19:49:57,424 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 19:49:57,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:57,424 INFO L85 PathProgramCache]: Analyzing trace with hash -984318207, now seen corresponding path program 1 times [2023-11-21 19:49:57,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:57,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987440526] [2023-11-21 19:49:57,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:57,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:57,538 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-21 19:49:57,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:57,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987440526] [2023-11-21 19:49:57,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987440526] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:49:57,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244683467] [2023-11-21 19:49:57,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:57,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:49:57,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:49:57,543 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:49:57,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 19:49:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:57,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:49:57,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:49:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-21 19:49:57,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:49:57,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244683467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:57,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:49:57,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-21 19:49:57,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405128265] [2023-11-21 19:49:57,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:57,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:49:57,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:57,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:49:57,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:49:57,708 INFO L87 Difference]: Start difference. First operand 65 states and 86 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-21 19:49:57,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:57,748 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2023-11-21 19:49:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:49:57,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 48 [2023-11-21 19:49:57,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:57,751 INFO L225 Difference]: With dead ends: 65 [2023-11-21 19:49:57,751 INFO L226 Difference]: Without dead ends: 64 [2023-11-21 19:49:57,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:49:57,753 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 2 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:57,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 134 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:49:57,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-21 19:49:57,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-21 19:49:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 45 states have internal predecessors, (51), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-21 19:49:57,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 85 transitions. [2023-11-21 19:49:57,785 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 85 transitions. Word has length 48 [2023-11-21 19:49:57,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:57,786 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 85 transitions. [2023-11-21 19:49:57,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-21 19:49:57,786 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 85 transitions. [2023-11-21 19:49:57,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-21 19:49:57,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:57,788 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:57,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 19:49:57,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-21 19:49:57,989 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 19:49:57,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:57,989 INFO L85 PathProgramCache]: Analyzing trace with hash -449093173, now seen corresponding path program 1 times [2023-11-21 19:49:57,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:57,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928969334] [2023-11-21 19:49:57,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:57,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-21 19:49:58,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:58,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928969334] [2023-11-21 19:49:58,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928969334] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:49:58,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967646112] [2023-11-21 19:49:58,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:58,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:49:58,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:49:58,100 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:49:58,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 19:49:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:58,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:49:58,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:49:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-21 19:49:58,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:49:58,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967646112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:58,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:49:58,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-21 19:49:58,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442249021] [2023-11-21 19:49:58,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:58,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:49:58,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:58,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:49:58,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:49:58,285 INFO L87 Difference]: Start difference. First operand 64 states and 85 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-21 19:49:58,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:58,328 INFO L93 Difference]: Finished difference Result 99 states and 125 transitions. [2023-11-21 19:49:58,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:49:58,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 49 [2023-11-21 19:49:58,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:58,330 INFO L225 Difference]: With dead ends: 99 [2023-11-21 19:49:58,331 INFO L226 Difference]: Without dead ends: 64 [2023-11-21 19:49:58,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:49:58,332 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:58,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:49:58,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-21 19:49:58,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-21 19:49:58,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 45 states have internal predecessors, (50), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-21 19:49:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2023-11-21 19:49:58,340 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 49 [2023-11-21 19:49:58,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:58,341 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2023-11-21 19:49:58,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-21 19:49:58,341 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2023-11-21 19:49:58,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-21 19:49:58,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:58,343 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:58,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 19:49:58,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:49:58,564 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 19:49:58,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:58,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1639404769, now seen corresponding path program 1 times [2023-11-21 19:49:58,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:58,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664079019] [2023-11-21 19:49:58,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:58,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-21 19:49:58,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:58,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664079019] [2023-11-21 19:49:58,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664079019] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:49:58,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512301477] [2023-11-21 19:49:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:58,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:49:58,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:49:58,668 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:49:58,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 19:49:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:58,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:49:58,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:49:58,841 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-21 19:49:58,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:49:58,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512301477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:58,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:49:58,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-21 19:49:58,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243553573] [2023-11-21 19:49:58,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:58,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:49:58,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:58,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:49:58,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:49:58,844 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-21 19:49:58,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:58,879 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2023-11-21 19:49:58,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:49:58,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2023-11-21 19:49:58,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:58,881 INFO L225 Difference]: With dead ends: 76 [2023-11-21 19:49:58,881 INFO L226 Difference]: Without dead ends: 64 [2023-11-21 19:49:58,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:49:58,883 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:58,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:49:58,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-21 19:49:58,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-21 19:49:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 45 states have internal predecessors, (48), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-21 19:49:58,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2023-11-21 19:49:58,889 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 50 [2023-11-21 19:49:58,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:58,890 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2023-11-21 19:49:58,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-21 19:49:58,890 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2023-11-21 19:49:58,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-21 19:49:58,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:58,892 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:58,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 19:49:59,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 19:49:59,113 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)] === [2023-11-21 19:49:59,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:59,114 INFO L85 PathProgramCache]: Analyzing trace with hash -142158198, now seen corresponding path program 1 times [2023-11-21 19:49:59,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:59,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92561919] [2023-11-21 19:49:59,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:59,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:59,222 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-21 19:49:59,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:59,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92561919] [2023-11-21 19:49:59,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92561919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:59,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:59,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:49:59,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315614495] [2023-11-21 19:49:59,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:59,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:49:59,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:59,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:49:59,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:49:59,227 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-21 19:49:59,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:59,272 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2023-11-21 19:49:59,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:49:59,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 54 [2023-11-21 19:49:59,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:59,274 INFO L225 Difference]: With dead ends: 78 [2023-11-21 19:49:59,274 INFO L226 Difference]: Without dead ends: 59 [2023-11-21 19:49:59,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:49:59,275 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:59,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:49:59,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-21 19:49:59,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-21 19:49:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 42 states have internal predecessors, (44), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-21 19:49:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2023-11-21 19:49:59,281 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 54 [2023-11-21 19:49:59,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:59,281 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2023-11-21 19:49:59,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-21 19:49:59,282 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2023-11-21 19:49:59,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-21 19:49:59,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:59,283 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:59,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 19:49:59,283 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 19:49:59,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:59,284 INFO L85 PathProgramCache]: Analyzing trace with hash 997297038, now seen corresponding path program 1 times [2023-11-21 19:49:59,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:59,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035188265] [2023-11-21 19:49:59,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:59,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:59,406 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-21 19:49:59,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:59,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035188265] [2023-11-21 19:49:59,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035188265] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:49:59,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497083107] [2023-11-21 19:49:59,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:59,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:49:59,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:49:59,409 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:49:59,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3207a9ae-caaf-47b0-9a3a-4d6659295cd6/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 19:49:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:59,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:49:59,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:49:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-21 19:49:59,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:49:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-21 19:49:59,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497083107] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:49:59,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2076836802] [2023-11-21 19:49:59,715 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-11-21 19:49:59,715 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:49:59,719 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:49:59,725 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:49:59,726 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:50:05,182 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsTrue with input of size 24 for LOIs [2023-11-21 19:50:05,186 INFO L197 IcfgInterpreter]: Interpreting procedure printIntLine with input of size 167 for LOIs [2023-11-21 19:50:05,238 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsFalse with input of size 209 for LOIs [2023-11-21 19:50:05,344 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 73 for LOIs [2023-11-21 19:50:05,365 INFO L180 IcfgInterpreter]: Interpretation finished