./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/sleep-4.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/sleep-4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 12244b834c7519d4d3daf3027146648b188c91f33b05dcd349edcc87950c24be --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:11:37,380 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:11:37,465 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 15:11:37,469 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:11:37,470 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:11:37,495 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:11:37,495 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:11:37,496 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:11:37,497 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:11:37,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:11:37,498 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:11:37,498 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:11:37,499 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:11:37,499 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:11:37,499 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:11:37,500 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:11:37,500 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:11:37,501 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:11:37,501 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:11:37,502 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:11:37,502 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:11:37,503 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:11:37,504 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:11:37,504 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:11:37,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:11:37,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:11:37,506 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:11:37,506 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:11:37,506 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:11:37,507 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 15:11:37,507 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:11:37,508 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:11:37,508 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:11:37,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:11:37,508 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:11:37,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:11:37,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:11:37,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:11:37,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:11:37,509 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:11:37,510 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:11:37,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:11:37,510 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:11:37,510 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:11:37,510 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:11:37,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:11:37,511 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_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12244b834c7519d4d3daf3027146648b188c91f33b05dcd349edcc87950c24be [2023-12-02 15:11:37,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:11:37,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:11:37,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:11:37,795 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:11:37,795 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:11:37,796 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/busybox-1.22.0/sleep-4.i [2023-12-02 15:11:40,568 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:11:40,885 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:11:40,885 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/sv-benchmarks/c/busybox-1.22.0/sleep-4.i [2023-12-02 15:11:40,910 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/data/925b763c6/91cac0db8ccd474e9d2d33166151b55d/FLAGc3f297039 [2023-12-02 15:11:40,922 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/data/925b763c6/91cac0db8ccd474e9d2d33166151b55d [2023-12-02 15:11:40,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:11:40,926 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:11:40,928 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:11:40,928 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:11:40,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:11:40,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:11:40" (1/1) ... [2023-12-02 15:11:40,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@758cdb8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:40, skipping insertion in model container [2023-12-02 15:11:40,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:11:40" (1/1) ... [2023-12-02 15:11:41,002 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:11:42,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:11:42,028 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:11:42,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:11:42,302 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:11:42,302 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:11:42,302 WARN L675 CHandler]: The function strspn is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:11:42,310 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:11:42,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:42 WrapperNode [2023-12-02 15:11:42,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:11:42,311 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:11:42,311 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:11:42,312 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:11:42,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:42" (1/1) ... [2023-12-02 15:11:42,359 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:42" (1/1) ... [2023-12-02 15:11:42,408 INFO L138 Inliner]: procedures = 633, calls = 241, calls flagged for inlining = 17, calls inlined = 15, statements flattened = 793 [2023-12-02 15:11:42,409 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:11:42,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:11:42,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:11:42,410 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:11:42,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:42" (1/1) ... [2023-12-02 15:11:42,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:42" (1/1) ... [2023-12-02 15:11:42,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:42" (1/1) ... [2023-12-02 15:11:42,431 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:42" (1/1) ... [2023-12-02 15:11:42,464 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:42" (1/1) ... [2023-12-02 15:11:42,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:42" (1/1) ... [2023-12-02 15:11:42,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:42" (1/1) ... [2023-12-02 15:11:42,487 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:42" (1/1) ... [2023-12-02 15:11:42,500 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:11:42,501 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:11:42,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:11:42,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:11:42,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:42" (1/1) ... [2023-12-02 15:11:42,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:11:42,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:11:42,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:11:42,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:11:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:11:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 15:11:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure xatoul_sfx [2023-12-02 15:11:42,565 INFO L138 BoogieDeclarations]: Found implementation of procedure xatoul_sfx [2023-12-02 15:11:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 15:11:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 15:11:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:11:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-12-02 15:11:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:11:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:11:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:11:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:11:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-12-02 15:11:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-12-02 15:11:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 15:11:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 15:11:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:11:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:11:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:11:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:11:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure bb_show_usage [2023-12-02 15:11:42,568 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_show_usage [2023-12-02 15:11:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2023-12-02 15:11:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-12-02 15:11:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:11:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-12-02 15:11:42,569 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-12-02 15:11:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:11:42,905 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:11:42,907 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:11:43,587 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:11:43,735 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:11:43,735 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-12-02 15:11:43,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:11:43 BoogieIcfgContainer [2023-12-02 15:11:43,737 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:11:43,739 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:11:43,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:11:43,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:11:43,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:11:40" (1/3) ... [2023-12-02 15:11:43,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632dd395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:11:43, skipping insertion in model container [2023-12-02 15:11:43,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:42" (2/3) ... [2023-12-02 15:11:43,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632dd395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:11:43, skipping insertion in model container [2023-12-02 15:11:43,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:11:43" (3/3) ... [2023-12-02 15:11:43,745 INFO L112 eAbstractionObserver]: Analyzing ICFG sleep-4.i [2023-12-02 15:11:43,762 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:11:43,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2023-12-02 15:11:43,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:11:43,823 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;@4d45fb89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:11:43,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-12-02 15:11:43,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 124 states have (on average 1.6774193548387097) internal successors, (208), 165 states have internal predecessors, (208), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 15:11:43,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 15:11:43,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:11:43,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 15:11:43,836 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:11:43,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:11:43,841 INFO L85 PathProgramCache]: Analyzing trace with hash 637456, now seen corresponding path program 1 times [2023-12-02 15:11:43,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:11:43,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096275747] [2023-12-02 15:11:43,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:43,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:11:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:44,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:11:44,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:11:44,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096275747] [2023-12-02 15:11:44,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096275747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:11:44,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:11:44,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 15:11:44,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230967766] [2023-12-02 15:11:44,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:11:44,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:11:44,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:11:44,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:11:44,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:11:44,281 INFO L87 Difference]: Start difference. First operand has 185 states, 124 states have (on average 1.6774193548387097) internal successors, (208), 165 states have internal predecessors, (208), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:11:44,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:11:44,422 INFO L93 Difference]: Finished difference Result 339 states and 451 transitions. [2023-12-02 15:11:44,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:11:44,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 15:11:44,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:11:44,432 INFO L225 Difference]: With dead ends: 339 [2023-12-02 15:11:44,432 INFO L226 Difference]: Without dead ends: 152 [2023-12-02 15:11:44,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:11:44,439 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 1 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:11:44,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 332 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:11:44,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-02 15:11:44,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2023-12-02 15:11:44,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 105 states have (on average 1.5809523809523809) internal successors, (166), 138 states have internal predecessors, (166), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:11:44,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 186 transitions. [2023-12-02 15:11:44,483 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 186 transitions. Word has length 3 [2023-12-02 15:11:44,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:11:44,483 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 186 transitions. [2023-12-02 15:11:44,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:11:44,484 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 186 transitions. [2023-12-02 15:11:44,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 15:11:44,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:11:44,484 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-12-02 15:11:44,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:11:44,485 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:11:44,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:11:44,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1810895150, now seen corresponding path program 1 times [2023-12-02 15:11:44,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:11:44,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461168638] [2023-12-02 15:11:44,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:44,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:11:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:11:44,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:11:44,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461168638] [2023-12-02 15:11:44,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461168638] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:11:44,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877757275] [2023-12-02 15:11:44,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:44,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:44,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:11:44,651 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:11:44,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:11:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:44,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:11:44,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:11:44,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:11:44,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:11:44,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877757275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:11:44,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:11:44,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-12-02 15:11:44,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863647343] [2023-12-02 15:11:44,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:11:44,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:11:44,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:11:44,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:11:44,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:11:44,912 INFO L87 Difference]: Start difference. First operand 152 states and 186 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:11:45,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:11:45,020 INFO L93 Difference]: Finished difference Result 152 states and 186 transitions. [2023-12-02 15:11:45,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:11:45,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 15:11:45,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:11:45,023 INFO L225 Difference]: With dead ends: 152 [2023-12-02 15:11:45,023 INFO L226 Difference]: Without dead ends: 151 [2023-12-02 15:11:45,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:11:45,025 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 2 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 471 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 [2023-12-02 15:11:45,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 471 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:11:45,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-02 15:11:45,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-12-02 15:11:45,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 105 states have (on average 1.5714285714285714) internal successors, (165), 137 states have internal predecessors, (165), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:11:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 185 transitions. [2023-12-02 15:11:45,041 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 185 transitions. Word has length 6 [2023-12-02 15:11:45,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:11:45,042 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 185 transitions. [2023-12-02 15:11:45,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:11:45,042 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 185 transitions. [2023-12-02 15:11:45,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 15:11:45,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:11:45,043 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-12-02 15:11:45,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:11:45,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:45,248 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:11:45,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:11:45,249 INFO L85 PathProgramCache]: Analyzing trace with hash 303175117, now seen corresponding path program 1 times [2023-12-02 15:11:45,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:11:45,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704800334] [2023-12-02 15:11:45,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:45,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:11:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:11:45,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:11:45,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704800334] [2023-12-02 15:11:45,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704800334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:11:45,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:11:45,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:11:45,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816978363] [2023-12-02 15:11:45,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:11:45,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:11:45,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:11:45,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:11:45,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:11:45,382 INFO L87 Difference]: Start difference. First operand 151 states and 185 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:11:45,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:11:45,460 INFO L93 Difference]: Finished difference Result 151 states and 185 transitions. [2023-12-02 15:11:45,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:11:45,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 15:11:45,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:11:45,462 INFO L225 Difference]: With dead ends: 151 [2023-12-02 15:11:45,462 INFO L226 Difference]: Without dead ends: 150 [2023-12-02 15:11:45,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:11:45,464 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:11:45,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 314 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:11:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-02 15:11:45,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2023-12-02 15:11:45,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 103 states have (on average 1.5728155339805825) internal successors, (162), 134 states have internal predecessors, (162), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:11:45,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 182 transitions. [2023-12-02 15:11:45,479 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 182 transitions. Word has length 7 [2023-12-02 15:11:45,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:11:45,479 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 182 transitions. [2023-12-02 15:11:45,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:11:45,479 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 182 transitions. [2023-12-02 15:11:45,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 15:11:45,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:11:45,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:11:45,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 15:11:45,481 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:11:45,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:11:45,481 INFO L85 PathProgramCache]: Analyzing trace with hash -355264941, now seen corresponding path program 1 times [2023-12-02 15:11:45,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:11:45,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074364289] [2023-12-02 15:11:45,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:45,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:11:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:11:45,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:11:45,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074364289] [2023-12-02 15:11:45,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074364289] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:11:45,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935495449] [2023-12-02 15:11:45,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:45,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:45,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:11:45,627 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:11:45,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:11:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:45,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:11:45,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:11:45,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:11:45,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:11:45,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935495449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:11:45,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:11:45,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:11:45,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729982507] [2023-12-02 15:11:45,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:11:45,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:11:45,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:11:45,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:11:45,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:11:45,850 INFO L87 Difference]: Start difference. First operand 148 states and 182 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:11:45,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:11:45,933 INFO L93 Difference]: Finished difference Result 148 states and 182 transitions. [2023-12-02 15:11:45,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:11:45,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-12-02 15:11:45,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:11:45,936 INFO L225 Difference]: With dead ends: 148 [2023-12-02 15:11:45,936 INFO L226 Difference]: Without dead ends: 146 [2023-12-02 15:11:45,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:11:45,937 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 32 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:11:45,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 278 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:11:45,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-02 15:11:45,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-12-02 15:11:45,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 103 states have (on average 1.5533980582524272) internal successors, (160), 132 states have internal predecessors, (160), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:11:45,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 180 transitions. [2023-12-02 15:11:45,950 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 180 transitions. Word has length 9 [2023-12-02 15:11:45,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:11:45,951 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 180 transitions. [2023-12-02 15:11:45,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:11:45,951 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 180 transitions. [2023-12-02 15:11:45,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 15:11:45,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:11:45,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:11:45,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 15:11:46,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:46,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:11:46,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:11:46,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1871689041, now seen corresponding path program 1 times [2023-12-02 15:11:46,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:11:46,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450820678] [2023-12-02 15:11:46,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:46,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:11:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:11:46,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:11:46,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450820678] [2023-12-02 15:11:46,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450820678] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:11:46,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005624261] [2023-12-02 15:11:46,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:46,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:46,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:11:46,273 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:11:46,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:11:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:46,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:11:46,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:11:46,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:11:46,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:11:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:11:46,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005624261] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:11:46,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1348710496] [2023-12-02 15:11:46,549 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 15:11:46,549 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:11:46,553 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:11:46,557 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:11:46,557 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:11:49,614 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 94 for LOIs [2023-12-02 15:11:49,643 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:11:50,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1348710496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:11:50,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:11:50,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 3, 4] total 13 [2023-12-02 15:11:50,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143868986] [2023-12-02 15:11:50,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:11:50,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:11:50,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:11:50,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:11:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-02 15:11:50,573 INFO L87 Difference]: Start difference. First operand 146 states and 180 transitions. Second operand has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:11:51,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:11:51,246 INFO L93 Difference]: Finished difference Result 148 states and 181 transitions. [2023-12-02 15:11:51,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:11:51,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-02 15:11:51,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:11:51,248 INFO L225 Difference]: With dead ends: 148 [2023-12-02 15:11:51,248 INFO L226 Difference]: Without dead ends: 146 [2023-12-02 15:11:51,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-02 15:11:51,249 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 6 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:11:51,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 498 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:11:51,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-02 15:11:51,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-12-02 15:11:51,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 104 states have (on average 1.5288461538461537) internal successors, (159), 131 states have internal predecessors, (159), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:11:51,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 179 transitions. [2023-12-02 15:11:51,263 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 179 transitions. Word has length 10 [2023-12-02 15:11:51,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:11:51,263 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 179 transitions. [2023-12-02 15:11:51,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:11:51,264 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 179 transitions. [2023-12-02 15:11:51,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 15:11:51,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:11:51,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:11:51,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 15:11:51,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:51,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:11:51,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:11:51,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1807629758, now seen corresponding path program 1 times [2023-12-02 15:11:51,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:11:51,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383481389] [2023-12-02 15:11:51,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:51,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:11:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:51,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:11:51,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:11:51,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383481389] [2023-12-02 15:11:51,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383481389] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:11:51,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007648491] [2023-12-02 15:11:51,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:51,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:51,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:11:51,600 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:11:51,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:11:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:51,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:11:51,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:11:51,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:11:51,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:11:51,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007648491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:11:51,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:11:51,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:11:51,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336160166] [2023-12-02 15:11:51,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:11:51,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:11:51,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:11:51,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:11:51,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:11:51,839 INFO L87 Difference]: Start difference. First operand 146 states and 179 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:11:51,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:11:51,943 INFO L93 Difference]: Finished difference Result 146 states and 179 transitions. [2023-12-02 15:11:51,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:11:51,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-12-02 15:11:51,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:11:51,945 INFO L225 Difference]: With dead ends: 146 [2023-12-02 15:11:51,945 INFO L226 Difference]: Without dead ends: 145 [2023-12-02 15:11:51,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:11:51,947 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 7 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:11:51,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 295 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:11:51,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-02 15:11:51,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-12-02 15:11:51,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 104 states have (on average 1.5192307692307692) internal successors, (158), 130 states have internal predecessors, (158), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:11:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 178 transitions. [2023-12-02 15:11:51,961 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 178 transitions. Word has length 15 [2023-12-02 15:11:51,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:11:51,961 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 178 transitions. [2023-12-02 15:11:51,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:11:51,961 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 178 transitions. [2023-12-02 15:11:51,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 15:11:51,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:11:51,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:11:51,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 15:11:52,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:52,164 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:11:52,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:11:52,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1807619488, now seen corresponding path program 1 times [2023-12-02 15:11:52,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:11:52,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561023461] [2023-12-02 15:11:52,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:52,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:11:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:11:52,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:11:52,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561023461] [2023-12-02 15:11:52,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561023461] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:11:52,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197449051] [2023-12-02 15:11:52,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:52,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:52,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:11:52,312 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:11:52,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 15:11:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:52,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:11:52,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:11:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:11:52,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:11:52,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197449051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:11:52,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:11:52,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:11:52,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833578702] [2023-12-02 15:11:52,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:11:52,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:11:52,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:11:52,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:11:52,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:11:52,566 INFO L87 Difference]: Start difference. First operand 145 states and 178 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:11:52,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:11:52,651 INFO L93 Difference]: Finished difference Result 145 states and 178 transitions. [2023-12-02 15:11:52,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:11:52,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-12-02 15:11:52,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:11:52,653 INFO L225 Difference]: With dead ends: 145 [2023-12-02 15:11:52,653 INFO L226 Difference]: Without dead ends: 144 [2023-12-02 15:11:52,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:11:52,654 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 2 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:11:52,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 299 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:11:52,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-02 15:11:52,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2023-12-02 15:11:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 104 states have (on average 1.5096153846153846) internal successors, (157), 129 states have internal predecessors, (157), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:11:52,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 177 transitions. [2023-12-02 15:11:52,667 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 177 transitions. Word has length 15 [2023-12-02 15:11:52,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:11:52,668 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 177 transitions. [2023-12-02 15:11:52,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:11:52,668 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 177 transitions. [2023-12-02 15:11:52,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 15:11:52,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:11:52,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:11:52,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-02 15:11:52,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:52,870 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:11:52,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:11:52,870 INFO L85 PathProgramCache]: Analyzing trace with hash 201948008, now seen corresponding path program 1 times [2023-12-02 15:11:52,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:11:52,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671970551] [2023-12-02 15:11:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:52,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:11:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:52,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:11:52,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:11:52,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671970551] [2023-12-02 15:11:52,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671970551] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:11:52,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253916657] [2023-12-02 15:11:52,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:52,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:52,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:11:52,977 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:11:52,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 15:11:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:53,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:11:53,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:11:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:11:53,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:11:53,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253916657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:11:53,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:11:53,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:11:53,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606403212] [2023-12-02 15:11:53,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:11:53,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:11:53,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:11:53,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:11:53,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:11:53,224 INFO L87 Difference]: Start difference. First operand 144 states and 177 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:11:53,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:11:53,308 INFO L93 Difference]: Finished difference Result 152 states and 187 transitions. [2023-12-02 15:11:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:11:53,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-12-02 15:11:53,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:11:53,310 INFO L225 Difference]: With dead ends: 152 [2023-12-02 15:11:53,310 INFO L226 Difference]: Without dead ends: 151 [2023-12-02 15:11:53,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:11:53,311 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 4 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:11:53,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 298 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:11:53,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-02 15:11:53,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2023-12-02 15:11:53,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 110 states have (on average 1.509090909090909) internal successors, (166), 135 states have internal predecessors, (166), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:11:53,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 186 transitions. [2023-12-02 15:11:53,321 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 186 transitions. Word has length 16 [2023-12-02 15:11:53,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:11:53,322 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 186 transitions. [2023-12-02 15:11:53,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:11:53,322 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 186 transitions. [2023-12-02 15:11:53,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 15:11:53,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:11:53,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:11:53,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-02 15:11:53,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:53,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:11:53,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:11:53,524 INFO L85 PathProgramCache]: Analyzing trace with hash 201629629, now seen corresponding path program 1 times [2023-12-02 15:11:53,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:11:53,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222571295] [2023-12-02 15:11:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:53,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:11:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:53,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:11:53,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:11:53,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222571295] [2023-12-02 15:11:53,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222571295] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:11:53,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084344054] [2023-12-02 15:11:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:53,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:53,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:11:53,639 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:11:53,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 15:11:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:53,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:11:53,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:11:53,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:11:53,891 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:11:53,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084344054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:11:53,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:11:53,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:11:53,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031135925] [2023-12-02 15:11:53,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:11:53,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:11:53,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:11:53,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:11:53,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:11:53,893 INFO L87 Difference]: Start difference. First operand 150 states and 186 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:11:53,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:11:53,971 INFO L93 Difference]: Finished difference Result 290 states and 362 transitions. [2023-12-02 15:11:53,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:11:53,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-12-02 15:11:53,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:11:53,973 INFO L225 Difference]: With dead ends: 290 [2023-12-02 15:11:53,973 INFO L226 Difference]: Without dead ends: 156 [2023-12-02 15:11:53,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:11:53,975 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 0 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:11:53,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 300 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:11:53,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-02 15:11:53,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2023-12-02 15:11:53,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 116 states have (on average 1.4827586206896552) internal successors, (172), 141 states have internal predecessors, (172), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:11:53,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 192 transitions. [2023-12-02 15:11:53,984 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 192 transitions. Word has length 16 [2023-12-02 15:11:53,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:11:53,984 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 192 transitions. [2023-12-02 15:11:53,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:11:53,984 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 192 transitions. [2023-12-02 15:11:53,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 15:11:53,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:11:53,985 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:11:53,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 15:11:54,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:54,186 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:11:54,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:11:54,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1910627875, now seen corresponding path program 1 times [2023-12-02 15:11:54,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:11:54,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046193672] [2023-12-02 15:11:54,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:54,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:11:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 15:11:54,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:11:54,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046193672] [2023-12-02 15:11:54,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046193672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:11:54,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593706794] [2023-12-02 15:11:54,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:54,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:54,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:11:54,309 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:11:54,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 15:11:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:54,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:11:54,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:11:54,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:11:54,528 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:11:54,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593706794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:11:54,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:11:54,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:11:54,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891808420] [2023-12-02 15:11:54,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:11:54,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:11:54,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:11:54,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:11:54,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:11:54,530 INFO L87 Difference]: Start difference. First operand 156 states and 192 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:11:54,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:11:54,600 INFO L93 Difference]: Finished difference Result 156 states and 192 transitions. [2023-12-02 15:11:54,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:11:54,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-12-02 15:11:54,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:11:54,602 INFO L225 Difference]: With dead ends: 156 [2023-12-02 15:11:54,602 INFO L226 Difference]: Without dead ends: 155 [2023-12-02 15:11:54,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:11:54,603 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 0 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:11:54,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 299 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:11:54,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-02 15:11:54,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2023-12-02 15:11:54,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 112 states have (on average 1.4821428571428572) internal successors, (166), 136 states have internal predecessors, (166), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:11:54,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 186 transitions. [2023-12-02 15:11:54,612 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 186 transitions. Word has length 19 [2023-12-02 15:11:54,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:11:54,612 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 186 transitions. [2023-12-02 15:11:54,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:11:54,613 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 186 transitions. [2023-12-02 15:11:54,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 15:11:54,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:11:54,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:11:54,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-02 15:11:54,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:54,816 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting xatoul_sfxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:11:54,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:11:54,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1882851063, now seen corresponding path program 1 times [2023-12-02 15:11:54,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:11:54,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501385767] [2023-12-02 15:11:54,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:54,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:11:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:11:54,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:11:54,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501385767] [2023-12-02 15:11:54,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501385767] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:11:54,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974998655] [2023-12-02 15:11:54,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:54,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:54,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:11:54,931 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:11:54,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 15:11:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:55,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:11:55,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:11:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:11:55,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:11:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:11:55,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974998655] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:11:55,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1912868484] [2023-12-02 15:11:55,235 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 15:11:55,235 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:11:55,235 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:11:55,235 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:11:55,236 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:11:57,294 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 94 for LOIs [2023-12-02 15:11:57,311 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:12:00,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1912868484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:12:00,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:12:00,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 3, 4] total 16 [2023-12-02 15:12:00,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386085498] [2023-12-02 15:12:00,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:12:00,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 15:12:00,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:12:00,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 15:12:00,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=190, Unknown=1, NotChecked=0, Total=240 [2023-12-02 15:12:00,681 INFO L87 Difference]: Start difference. First operand 151 states and 186 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:12:03,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:12:03,530 INFO L93 Difference]: Finished difference Result 275 states and 340 transitions. [2023-12-02 15:12:03,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 15:12:03,531 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-12-02 15:12:03,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:12:03,532 INFO L225 Difference]: With dead ends: 275 [2023-12-02 15:12:03,532 INFO L226 Difference]: Without dead ends: 151 [2023-12-02 15:12:03,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=49, Invalid=190, Unknown=1, NotChecked=0, Total=240 [2023-12-02 15:12:03,534 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 2 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:12:03,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1033 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 2 Unknown, 0 Unchecked, 2.8s Time] [2023-12-02 15:12:03,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-02 15:12:03,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-12-02 15:12:03,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 112 states have (on average 1.4732142857142858) internal successors, (165), 136 states have internal predecessors, (165), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:12:03,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 185 transitions. [2023-12-02 15:12:03,545 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 185 transitions. Word has length 21 [2023-12-02 15:12:03,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:12:03,546 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 185 transitions. [2023-12-02 15:12:03,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:12:03,546 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 185 transitions. [2023-12-02 15:12:03,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 15:12:03,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:12:03,547 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:12:03,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 15:12:03,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:12:03,747 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:12:03,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:12:03,748 INFO L85 PathProgramCache]: Analyzing trace with hash 763996211, now seen corresponding path program 1 times [2023-12-02 15:12:03,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:12:03,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239757274] [2023-12-02 15:12:03,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:12:03,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:12:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:12:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 15:12:03,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:12:03,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239757274] [2023-12-02 15:12:03,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239757274] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:12:03,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072006636] [2023-12-02 15:12:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:12:03,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:12:03,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:12:03,843 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:12:03,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 15:12:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:12:04,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:12:04,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:12:04,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 15:12:04,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:12:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 15:12:04,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072006636] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:12:04,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [35827720] [2023-12-02 15:12:04,113 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 15:12:04,113 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:12:04,113 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:12:04,113 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:12:04,113 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:12:11,607 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 94 for LOIs [2023-12-02 15:12:11,624 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:12:15,931 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5341#(<= 2147483647 |ULTIMATE.start_main_~i~4#1|)' at error location [2023-12-02 15:12:15,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:12:15,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:12:15,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-12-02 15:12:15,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724080499] [2023-12-02 15:12:15,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:12:15,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:12:15,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:12:15,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:12:15,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=321, Unknown=1, NotChecked=0, Total=380 [2023-12-02 15:12:15,933 INFO L87 Difference]: Start difference. First operand 151 states and 185 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:12:16,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:12:16,039 INFO L93 Difference]: Finished difference Result 306 states and 376 transitions. [2023-12-02 15:12:16,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:12:16,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-12-02 15:12:16,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:12:16,041 INFO L225 Difference]: With dead ends: 306 [2023-12-02 15:12:16,041 INFO L226 Difference]: Without dead ends: 160 [2023-12-02 15:12:16,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=58, Invalid=321, Unknown=1, NotChecked=0, Total=380 [2023-12-02 15:12:16,043 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 4 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:12:16,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 450 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:12:16,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-02 15:12:16,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-12-02 15:12:16,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 121 states have (on average 1.43801652892562) internal successors, (174), 145 states have internal predecessors, (174), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:12:16,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 194 transitions. [2023-12-02 15:12:16,056 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 194 transitions. Word has length 26 [2023-12-02 15:12:16,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:12:16,056 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 194 transitions. [2023-12-02 15:12:16,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:12:16,057 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 194 transitions. [2023-12-02 15:12:16,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 15:12:16,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:12:16,058 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:12:16,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 15:12:16,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:12:16,265 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:12:16,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:12:16,265 INFO L85 PathProgramCache]: Analyzing trace with hash 866181781, now seen corresponding path program 2 times [2023-12-02 15:12:16,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:12:16,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052685547] [2023-12-02 15:12:16,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:12:16,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:12:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:12:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-02 15:12:16,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:12:16,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052685547] [2023-12-02 15:12:16,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052685547] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:12:16,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945226262] [2023-12-02 15:12:16,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:12:16,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:12:16,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:12:16,400 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:12:16,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 15:12:16,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 15:12:16,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:12:16,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:12:16,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:12:16,725 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-02 15:12:16,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:12:16,759 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-02 15:12:16,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945226262] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:12:16,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1426946826] [2023-12-02 15:12:16,761 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 15:12:16,761 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:12:16,761 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:12:16,761 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:12:16,762 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:12:23,766 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 94 for LOIs [2023-12-02 15:12:23,783 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:12:28,961 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6135#(<= 2147483647 |ULTIMATE.start_main_~i~4#1|)' at error location [2023-12-02 15:12:28,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:12:28,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:12:28,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-12-02 15:12:28,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794559814] [2023-12-02 15:12:28,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:12:28,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:12:28,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:12:28,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:12:28,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=359, Unknown=2, NotChecked=0, Total=420 [2023-12-02 15:12:28,963 INFO L87 Difference]: Start difference. First operand 160 states and 194 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:12:29,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:12:29,200 INFO L93 Difference]: Finished difference Result 303 states and 372 transitions. [2023-12-02 15:12:29,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:12:29,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2023-12-02 15:12:29,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:12:29,202 INFO L225 Difference]: With dead ends: 303 [2023-12-02 15:12:29,202 INFO L226 Difference]: Without dead ends: 169 [2023-12-02 15:12:29,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=93, Invalid=503, Unknown=4, NotChecked=0, Total=600 [2023-12-02 15:12:29,203 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 18 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:12:29,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 822 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:12:29,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-02 15:12:29,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 156. [2023-12-02 15:12:29,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 118 states have (on average 1.4322033898305084) internal successors, (169), 141 states have internal predecessors, (169), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:12:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 189 transitions. [2023-12-02 15:12:29,214 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 189 transitions. Word has length 35 [2023-12-02 15:12:29,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:12:29,214 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 189 transitions. [2023-12-02 15:12:29,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:12:29,214 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 189 transitions. [2023-12-02 15:12:29,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 15:12:29,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:12:29,215 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:12:29,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 15:12:29,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:12:29,416 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting xatoul_sfxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:12:29,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:12:29,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1057745394, now seen corresponding path program 1 times [2023-12-02 15:12:29,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:12:29,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842047890] [2023-12-02 15:12:29,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:12:29,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:12:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:12:29,639 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 15:12:29,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:12:29,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842047890] [2023-12-02 15:12:29,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842047890] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:12:29,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145486697] [2023-12-02 15:12:29,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:12:29,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:12:29,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:12:29,642 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:12:29,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 15:12:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:12:29,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:12:29,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:12:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 15:12:30,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:12:30,087 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 15:12:30,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145486697] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:12:30,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [180118932] [2023-12-02 15:12:30,090 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-12-02 15:12:30,090 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:12:30,090 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:12:30,090 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:12:30,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:12:38,404 INFO L197 IcfgInterpreter]: Interpreting procedure xatoul_sfx with input of size 196 for LOIs [2023-12-02 15:12:39,022 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 94 for LOIs [2023-12-02 15:12:39,038 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:12:52,369 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6962#(and (<= (+ 2147483640 |xatoul_sfx_xstrtoull_range_sfx_#t~mem133#1|) 0) (= |xatoul_sfx_~str#1.base| |xatoul_sfx_xatoull_sfx_#in~numstr#1.base|) (= |#length| (store |old(#length)| |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base| 8)) (= |xatoul_sfx_#in~sfx#1.offset| |xatoul_sfx_~sfx#1.offset|) (= 10 |xatoul_sfx_xstrtoull_range_sfx_#in~base#1|) (= |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.offset| 0) (not (= |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base| 0)) (= |xatoul_sfx_xatoull_sfx_#in~numstr#1.offset| |xatoul_sfx_xatoull_sfx_~numstr#1.offset|) (= |xatoul_sfx_xatoull_sfx_~suffixes#1.offset| |xatoul_sfx_xstrtoull_range_sfx_#in~suffixes#1.offset|) (= |#memory_int| |old(#memory_int)|) (= |xatoul_sfx_xatoull_sfx_#in~suffixes#1.offset| |xatoul_sfx_~sfx#1.offset|) (= (select |old(#valid)| |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base|) 0) (= |xatoul_sfx_xstrtoull_range_sfx_~suffixes#1.base| |xatoul_sfx_xstrtoull_range_sfx_#in~suffixes#1.base|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |xatoul_sfx_xstrtoull_range_sfx_#in~lower#1| 0) (= |xatoul_sfx_xstrtoull_range_sfx_~tmp_if_expr$1~1#1| 0) (= |xatoul_sfx_xstrtoull_range_sfx_#in~numstr#1.base| |xatoul_sfx_xatoull_sfx_~numstr#1.base|) (= |xatoul_sfx_xstrtoull_range_sfx_~base#1| 10) (= (store |old(#valid)| |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base| 1) |#valid|) (= |xatoul_sfx_~str#1.offset| |xatoul_sfx_#in~str#1.offset|) (= |xatoul_sfx_xatoull_sfx_~suffixes#1.base| |xatoul_sfx_xstrtoull_range_sfx_#in~suffixes#1.base|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |xatoul_sfx_xatoull_sfx_~suffixes#1.base| |xatoul_sfx_xatoull_sfx_#in~suffixes#1.base|) (= |xatoul_sfx_xatoull_sfx_#in~numstr#1.base| |xatoul_sfx_xatoull_sfx_~numstr#1.base|) (= |xatoul_sfx_xatoull_sfx_~suffixes#1.offset| |xatoul_sfx_xatoull_sfx_#in~suffixes#1.offset|) (= |xatoul_sfx_xstrtoull_range_sfx_#in~numstr#1.offset| |xatoul_sfx_xstrtoull_range_sfx_~numstr#1.offset|) (<= (+ |#StackHeapBarrier| 1) |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base|) (= |~#sfx~0.offset| |xatoul_sfx_#in~sfx#1.offset|) (= |xatoul_sfx_xstrtoull_range_sfx_~lower#1| 0) (= |xatoul_sfx_xstrtoull_range_sfx_#in~numstr#1.offset| |xatoul_sfx_xatoull_sfx_~numstr#1.offset|) (= (select (select |#memory_int| |xatoul_sfx_xstrtoull_range_sfx_~numstr#1.base|) |xatoul_sfx_xstrtoull_range_sfx_~numstr#1.offset|) |xatoul_sfx_xstrtoull_range_sfx_#t~mem133#1|) (exists ((|v_ULTIMATE.start_main_~i~4#1_39| Int) (|v_#length_106| (Array Int Int)) (|v_ULTIMATE.start___main_~argv#1.base_BEFORE_CALL_1| Int) (|v_#valid_155| (Array Int Int)) (|v_ULTIMATE.start___main_~argc#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start___main_~argv#1.offset_BEFORE_CALL_1| Int)) (and (= (select |v_#valid_155| |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_1|) 0) (<= |v_ULTIMATE.start___main_~argc#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_~i~4#1_39|) (= (select (select |old(#memory_$Pointer$.offset)| |v_ULTIMATE.start___main_~argv#1.base_BEFORE_CALL_1|) |v_ULTIMATE.start___main_~argv#1.offset_BEFORE_CALL_1|) |xatoul_sfx_#in~str#1.offset|) (= |xatoul_sfx_#in~str#1.base| (select (select |old(#memory_$Pointer$.base)| |v_ULTIMATE.start___main_~argv#1.base_BEFORE_CALL_1|) |v_ULTIMATE.start___main_~argv#1.offset_BEFORE_CALL_1|)) (not (= |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_1| 0)) (or (not (= (select (select |old(#memory_$Pointer$.offset)| |v_ULTIMATE.start___main_~argv#1.base_BEFORE_CALL_1|) |v_ULTIMATE.start___main_~argv#1.offset_BEFORE_CALL_1|) 0)) (not (= (select (select |old(#memory_$Pointer$.base)| |v_ULTIMATE.start___main_~argv#1.base_BEFORE_CALL_1|) |v_ULTIMATE.start___main_~argv#1.offset_BEFORE_CALL_1|) 0))) (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_1|) (= |old(#length)| (store |v_#length_106| |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_1| 16)) (<= 0 (+ |v_ULTIMATE.start_main_~i~4#1_39| 2147483648)) (= |old(#valid)| (store |v_#valid_155| |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_1| 1)) (<= |v_ULTIMATE.start_main_~i~4#1_39| 2147483647))) (= 18446744073709551615 |xatoul_sfx_xstrtoull_range_sfx_#in~upper#1|) (= |xatoul_sfx_xatoull_sfx_#in~numstr#1.offset| |xatoul_sfx_~str#1.offset|) (= |xatoul_sfx_~sfx#1.base| |xatoul_sfx_#in~sfx#1.base|) (= 18446744073709551615 |xatoul_sfx_xstrtoull_range_sfx_~upper#1|) (= |xatoul_sfx_xstrtoull_range_sfx_#in~suffixes#1.offset| |xatoul_sfx_xstrtoull_range_sfx_~suffixes#1.offset|) (= |xatoul_sfx_~sfx#1.base| |xatoul_sfx_xatoull_sfx_#in~suffixes#1.base|) (= |~#sfx~0.base| |xatoul_sfx_#in~sfx#1.base|) (= |xatoul_sfx_~str#1.base| |xatoul_sfx_#in~str#1.base|) (= |xatoul_sfx_xstrtoull_range_sfx_#in~numstr#1.base| |xatoul_sfx_xstrtoull_range_sfx_~numstr#1.base|))' at error location [2023-12-02 15:12:52,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:12:52,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:12:52,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2023-12-02 15:12:52,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953322046] [2023-12-02 15:12:52,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:12:52,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 15:12:52,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:12:52,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 15:12:52,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=922, Unknown=6, NotChecked=0, Total=1056 [2023-12-02 15:12:52,371 INFO L87 Difference]: Start difference. First operand 156 states and 189 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:12:52,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:12:52,484 INFO L93 Difference]: Finished difference Result 316 states and 387 transitions. [2023-12-02 15:12:52,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 15:12:52,484 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2023-12-02 15:12:52,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:12:52,486 INFO L225 Difference]: With dead ends: 316 [2023-12-02 15:12:52,486 INFO L226 Difference]: Without dead ends: 174 [2023-12-02 15:12:52,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=128, Invalid=922, Unknown=6, NotChecked=0, Total=1056 [2023-12-02 15:12:52,487 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 4 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:12:52,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 447 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:12:52,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-02 15:12:52,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2023-12-02 15:12:52,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 136 states have (on average 1.375) internal successors, (187), 159 states have internal predecessors, (187), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:12:52,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 207 transitions. [2023-12-02 15:12:52,497 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 207 transitions. Word has length 40 [2023-12-02 15:12:52,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:12:52,497 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 207 transitions. [2023-12-02 15:12:52,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:12:52,498 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 207 transitions. [2023-12-02 15:12:52,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 15:12:52,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:12:52,498 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:12:52,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 15:12:52,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:12:52,699 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting xatoul_sfxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:12:52,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:12:52,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1341425714, now seen corresponding path program 2 times [2023-12-02 15:12:52,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:12:52,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165210130] [2023-12-02 15:12:52,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:12:52,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:12:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:12:52,923 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-02 15:12:52,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:12:52,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165210130] [2023-12-02 15:12:52,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165210130] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:12:52,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693842270] [2023-12-02 15:12:52,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:12:52,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:12:52,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:12:52,926 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:12:52,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 15:12:54,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-02 15:12:54,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:12:54,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:12:54,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:12:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-02 15:12:54,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:12:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-02 15:12:54,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693842270] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:12:54,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1300472688] [2023-12-02 15:12:54,451 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-12-02 15:12:54,451 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:12:54,451 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:12:54,451 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:12:54,451 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:13:02,022 INFO L197 IcfgInterpreter]: Interpreting procedure xatoul_sfx with input of size 196 for LOIs [2023-12-02 15:13:02,614 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 94 for LOIs [2023-12-02 15:13:02,631 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:13:17,489 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7935#(and (<= (+ 2147483640 |xatoul_sfx_xstrtoull_range_sfx_#t~mem133#1|) 0) (= |xatoul_sfx_~str#1.base| |xatoul_sfx_xatoull_sfx_#in~numstr#1.base|) (= |#length| (store |old(#length)| |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base| 8)) (= |xatoul_sfx_#in~sfx#1.offset| |xatoul_sfx_~sfx#1.offset|) (= 10 |xatoul_sfx_xstrtoull_range_sfx_#in~base#1|) (= |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.offset| 0) (not (= |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base| 0)) (= |xatoul_sfx_xatoull_sfx_#in~numstr#1.offset| |xatoul_sfx_xatoull_sfx_~numstr#1.offset|) (= |xatoul_sfx_xatoull_sfx_~suffixes#1.offset| |xatoul_sfx_xstrtoull_range_sfx_#in~suffixes#1.offset|) (exists ((|v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_2| Int) (|v_#length_117| (Array Int Int)) (|v_ULTIMATE.start___main_~argv#1.base_BEFORE_CALL_2| Int) (|v_#valid_166| (Array Int Int)) (|v_ULTIMATE.start___main_~argc#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~i~4#1_43| Int) (|v_ULTIMATE.start___main_~argv#1.offset_BEFORE_CALL_2| Int)) (and (not (= |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_2| 0)) (= (select (select |old(#memory_$Pointer$.base)| |v_ULTIMATE.start___main_~argv#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start___main_~argv#1.offset_BEFORE_CALL_2|) |xatoul_sfx_#in~str#1.base|) (<= |v_ULTIMATE.start_main_~i~4#1_43| 2147483647) (= (select (select |old(#memory_$Pointer$.offset)| |v_ULTIMATE.start___main_~argv#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start___main_~argv#1.offset_BEFORE_CALL_2|) |xatoul_sfx_#in~str#1.offset|) (= |old(#length)| (store |v_#length_117| |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_2| 16)) (<= |v_ULTIMATE.start___main_~argc#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~i~4#1_43|) (or (not (= (select (select |old(#memory_$Pointer$.offset)| |v_ULTIMATE.start___main_~argv#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start___main_~argv#1.offset_BEFORE_CALL_2|) 0)) (not (= (select (select |old(#memory_$Pointer$.base)| |v_ULTIMATE.start___main_~argv#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start___main_~argv#1.offset_BEFORE_CALL_2|) 0))) (<= 0 (+ |v_ULTIMATE.start_main_~i~4#1_43| 2147483648)) (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_2|) (= (select |v_#valid_166| |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_2|) 0) (= |old(#valid)| (store |v_#valid_166| |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_2| 1)))) (= |#memory_int| |old(#memory_int)|) (= |xatoul_sfx_xatoull_sfx_#in~suffixes#1.offset| |xatoul_sfx_~sfx#1.offset|) (= (select |old(#valid)| |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base|) 0) (= |xatoul_sfx_xstrtoull_range_sfx_~suffixes#1.base| |xatoul_sfx_xstrtoull_range_sfx_#in~suffixes#1.base|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |xatoul_sfx_xstrtoull_range_sfx_#in~lower#1| 0) (= |xatoul_sfx_xstrtoull_range_sfx_~tmp_if_expr$1~1#1| 0) (= |xatoul_sfx_xstrtoull_range_sfx_#in~numstr#1.base| |xatoul_sfx_xatoull_sfx_~numstr#1.base|) (= |xatoul_sfx_xstrtoull_range_sfx_~base#1| 10) (= (store |old(#valid)| |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base| 1) |#valid|) (= |xatoul_sfx_~str#1.offset| |xatoul_sfx_#in~str#1.offset|) (= |xatoul_sfx_xatoull_sfx_~suffixes#1.base| |xatoul_sfx_xstrtoull_range_sfx_#in~suffixes#1.base|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |xatoul_sfx_xatoull_sfx_~suffixes#1.base| |xatoul_sfx_xatoull_sfx_#in~suffixes#1.base|) (= |xatoul_sfx_xatoull_sfx_#in~numstr#1.base| |xatoul_sfx_xatoull_sfx_~numstr#1.base|) (= |xatoul_sfx_xatoull_sfx_~suffixes#1.offset| |xatoul_sfx_xatoull_sfx_#in~suffixes#1.offset|) (= |xatoul_sfx_xstrtoull_range_sfx_#in~numstr#1.offset| |xatoul_sfx_xstrtoull_range_sfx_~numstr#1.offset|) (<= (+ |#StackHeapBarrier| 1) |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base|) (= |~#sfx~0.offset| |xatoul_sfx_#in~sfx#1.offset|) (= |xatoul_sfx_xstrtoull_range_sfx_~lower#1| 0) (= |xatoul_sfx_xstrtoull_range_sfx_#in~numstr#1.offset| |xatoul_sfx_xatoull_sfx_~numstr#1.offset|) (= (select (select |#memory_int| |xatoul_sfx_xstrtoull_range_sfx_~numstr#1.base|) |xatoul_sfx_xstrtoull_range_sfx_~numstr#1.offset|) |xatoul_sfx_xstrtoull_range_sfx_#t~mem133#1|) (= 18446744073709551615 |xatoul_sfx_xstrtoull_range_sfx_#in~upper#1|) (= |xatoul_sfx_xatoull_sfx_#in~numstr#1.offset| |xatoul_sfx_~str#1.offset|) (= |xatoul_sfx_~sfx#1.base| |xatoul_sfx_#in~sfx#1.base|) (= 18446744073709551615 |xatoul_sfx_xstrtoull_range_sfx_~upper#1|) (= |xatoul_sfx_xstrtoull_range_sfx_#in~suffixes#1.offset| |xatoul_sfx_xstrtoull_range_sfx_~suffixes#1.offset|) (= |xatoul_sfx_~sfx#1.base| |xatoul_sfx_xatoull_sfx_#in~suffixes#1.base|) (= |~#sfx~0.base| |xatoul_sfx_#in~sfx#1.base|) (= |xatoul_sfx_~str#1.base| |xatoul_sfx_#in~str#1.base|) (= |xatoul_sfx_xstrtoull_range_sfx_#in~numstr#1.base| |xatoul_sfx_xstrtoull_range_sfx_~numstr#1.base|))' at error location [2023-12-02 15:13:17,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:13:17,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:13:17,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-12-02 15:13:17,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43554147] [2023-12-02 15:13:17,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:13:17,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 15:13:17,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:13:17,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 15:13:17,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=706, Unknown=13, NotChecked=0, Total=812 [2023-12-02 15:13:17,491 INFO L87 Difference]: Start difference. First operand 174 states and 207 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:13:17,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:13:17,604 INFO L93 Difference]: Finished difference Result 320 states and 389 transitions. [2023-12-02 15:13:17,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:13:17,604 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-12-02 15:13:17,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:13:17,605 INFO L225 Difference]: With dead ends: 320 [2023-12-02 15:13:17,605 INFO L226 Difference]: Without dead ends: 186 [2023-12-02 15:13:17,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=93, Invalid=706, Unknown=13, NotChecked=0, Total=812 [2023-12-02 15:13:17,607 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 4 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:13:17,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 445 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:13:17,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-12-02 15:13:17,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-12-02 15:13:17,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 148 states have (on average 1.3445945945945945) internal successors, (199), 171 states have internal predecessors, (199), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:13:17,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 219 transitions. [2023-12-02 15:13:17,617 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 219 transitions. Word has length 58 [2023-12-02 15:13:17,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:13:17,617 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 219 transitions. [2023-12-02 15:13:17,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:13:17,618 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 219 transitions. [2023-12-02 15:13:17,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 15:13:17,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:13:17,619 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:13:17,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 15:13:17,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 15:13:17,824 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting xatoul_sfxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:13:17,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:13:17,824 INFO L85 PathProgramCache]: Analyzing trace with hash -172674254, now seen corresponding path program 3 times [2023-12-02 15:13:17,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:13:17,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035622502] [2023-12-02 15:13:17,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:13:17,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:13:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:13:18,178 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-02 15:13:18,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:13:18,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035622502] [2023-12-02 15:13:18,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035622502] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:13:18,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918304697] [2023-12-02 15:13:18,179 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 15:13:18,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:13:18,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:13:18,180 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:13:18,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 15:13:18,534 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 15:13:18,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:13:18,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:13:18,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:13:18,570 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-02 15:13:18,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:13:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-02 15:13:18,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918304697] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:13:18,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [549391671] [2023-12-02 15:13:18,664 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-12-02 15:13:18,665 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:13:18,665 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:13:18,665 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:13:18,665 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:13:26,114 INFO L197 IcfgInterpreter]: Interpreting procedure xatoul_sfx with input of size 196 for LOIs [2023-12-02 15:13:26,705 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 94 for LOIs [2023-12-02 15:13:26,721 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:13:40,538 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9005#(and (<= (+ 2147483640 |xatoul_sfx_xstrtoull_range_sfx_#t~mem133#1|) 0) (= |xatoul_sfx_~str#1.base| |xatoul_sfx_xatoull_sfx_#in~numstr#1.base|) (= |#length| (store |old(#length)| |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base| 8)) (= |xatoul_sfx_#in~sfx#1.offset| |xatoul_sfx_~sfx#1.offset|) (= 10 |xatoul_sfx_xstrtoull_range_sfx_#in~base#1|) (= |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.offset| 0) (not (= |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base| 0)) (= |xatoul_sfx_xatoull_sfx_#in~numstr#1.offset| |xatoul_sfx_xatoull_sfx_~numstr#1.offset|) (= |xatoul_sfx_xatoull_sfx_~suffixes#1.offset| |xatoul_sfx_xstrtoull_range_sfx_#in~suffixes#1.offset|) (= |#memory_int| |old(#memory_int)|) (= |xatoul_sfx_xatoull_sfx_#in~suffixes#1.offset| |xatoul_sfx_~sfx#1.offset|) (= (select |old(#valid)| |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base|) 0) (= |xatoul_sfx_xstrtoull_range_sfx_~suffixes#1.base| |xatoul_sfx_xstrtoull_range_sfx_#in~suffixes#1.base|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |xatoul_sfx_xstrtoull_range_sfx_#in~lower#1| 0) (= |xatoul_sfx_xstrtoull_range_sfx_~tmp_if_expr$1~1#1| 0) (= |xatoul_sfx_xstrtoull_range_sfx_#in~numstr#1.base| |xatoul_sfx_xatoull_sfx_~numstr#1.base|) (= |xatoul_sfx_xstrtoull_range_sfx_~base#1| 10) (= (store |old(#valid)| |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base| 1) |#valid|) (= |xatoul_sfx_~str#1.offset| |xatoul_sfx_#in~str#1.offset|) (= |xatoul_sfx_xatoull_sfx_~suffixes#1.base| |xatoul_sfx_xstrtoull_range_sfx_#in~suffixes#1.base|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |xatoul_sfx_xatoull_sfx_~suffixes#1.base| |xatoul_sfx_xatoull_sfx_#in~suffixes#1.base|) (= |xatoul_sfx_xatoull_sfx_#in~numstr#1.base| |xatoul_sfx_xatoull_sfx_~numstr#1.base|) (= |xatoul_sfx_xatoull_sfx_~suffixes#1.offset| |xatoul_sfx_xatoull_sfx_#in~suffixes#1.offset|) (= |xatoul_sfx_xstrtoull_range_sfx_#in~numstr#1.offset| |xatoul_sfx_xstrtoull_range_sfx_~numstr#1.offset|) (<= (+ |#StackHeapBarrier| 1) |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base|) (= |~#sfx~0.offset| |xatoul_sfx_#in~sfx#1.offset|) (= |xatoul_sfx_xstrtoull_range_sfx_~lower#1| 0) (exists ((|v_#length_128| (Array Int Int)) (|v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start___main_~argv#1.base_BEFORE_CALL_3| Int) (|v_#valid_177| (Array Int Int)) (|v_ULTIMATE.start___main_~argv#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start___main_~argc#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~i~4#1_47| Int)) (and (<= |v_ULTIMATE.start_main_~i~4#1_47| 2147483647) (= (select |v_#valid_177| |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_3|) 0) (= (select (select |old(#memory_$Pointer$.offset)| |v_ULTIMATE.start___main_~argv#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start___main_~argv#1.offset_BEFORE_CALL_3|) |xatoul_sfx_#in~str#1.offset|) (or (not (= (select (select |old(#memory_$Pointer$.base)| |v_ULTIMATE.start___main_~argv#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start___main_~argv#1.offset_BEFORE_CALL_3|) 0)) (not (= (select (select |old(#memory_$Pointer$.offset)| |v_ULTIMATE.start___main_~argv#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start___main_~argv#1.offset_BEFORE_CALL_3|) 0))) (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_3|) (<= 0 (+ |v_ULTIMATE.start_main_~i~4#1_47| 2147483648)) (= |old(#length)| (store |v_#length_128| |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_3| 16)) (<= |v_ULTIMATE.start___main_~argc#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~i~4#1_47|) (= |old(#valid)| (store |v_#valid_177| |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_3| 1)) (= |xatoul_sfx_#in~str#1.base| (select (select |old(#memory_$Pointer$.base)| |v_ULTIMATE.start___main_~argv#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start___main_~argv#1.offset_BEFORE_CALL_3|)) (not (= |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_3| 0)))) (= |xatoul_sfx_xstrtoull_range_sfx_#in~numstr#1.offset| |xatoul_sfx_xatoull_sfx_~numstr#1.offset|) (= (select (select |#memory_int| |xatoul_sfx_xstrtoull_range_sfx_~numstr#1.base|) |xatoul_sfx_xstrtoull_range_sfx_~numstr#1.offset|) |xatoul_sfx_xstrtoull_range_sfx_#t~mem133#1|) (= 18446744073709551615 |xatoul_sfx_xstrtoull_range_sfx_#in~upper#1|) (= |xatoul_sfx_xatoull_sfx_#in~numstr#1.offset| |xatoul_sfx_~str#1.offset|) (= |xatoul_sfx_~sfx#1.base| |xatoul_sfx_#in~sfx#1.base|) (= 18446744073709551615 |xatoul_sfx_xstrtoull_range_sfx_~upper#1|) (= |xatoul_sfx_xstrtoull_range_sfx_#in~suffixes#1.offset| |xatoul_sfx_xstrtoull_range_sfx_~suffixes#1.offset|) (= |xatoul_sfx_~sfx#1.base| |xatoul_sfx_xatoull_sfx_#in~suffixes#1.base|) (= |~#sfx~0.base| |xatoul_sfx_#in~sfx#1.base|) (= |xatoul_sfx_~str#1.base| |xatoul_sfx_#in~str#1.base|) (= |xatoul_sfx_xstrtoull_range_sfx_#in~numstr#1.base| |xatoul_sfx_xstrtoull_range_sfx_~numstr#1.base|))' at error location [2023-12-02 15:13:40,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:13:40,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:13:40,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2023-12-02 15:13:40,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402787441] [2023-12-02 15:13:40,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:13:40,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 15:13:40,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:13:40,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 15:13:40,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=900, Unknown=17, NotChecked=0, Total=1056 [2023-12-02 15:13:40,540 INFO L87 Difference]: Start difference. First operand 186 states and 219 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:13:40,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:13:40,687 INFO L93 Difference]: Finished difference Result 344 states and 413 transitions. [2023-12-02 15:13:40,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 15:13:40,687 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-12-02 15:13:40,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:13:40,689 INFO L225 Difference]: With dead ends: 344 [2023-12-02 15:13:40,689 INFO L226 Difference]: Without dead ends: 198 [2023-12-02 15:13:40,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 182 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=139, Invalid=900, Unknown=17, NotChecked=0, Total=1056 [2023-12-02 15:13:40,690 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 2 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:13:40,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 593 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:13:40,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-12-02 15:13:40,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2023-12-02 15:13:40,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 160 states have (on average 1.31875) internal successors, (211), 183 states have internal predecessors, (211), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:13:40,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 231 transitions. [2023-12-02 15:13:40,702 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 231 transitions. Word has length 70 [2023-12-02 15:13:40,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:13:40,702 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 231 transitions. [2023-12-02 15:13:40,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:13:40,703 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 231 transitions. [2023-12-02 15:13:40,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 15:13:40,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:13:40,704 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:13:40,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-02 15:13:40,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 15:13:40,904 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting xatoul_sfxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:13:40,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:13:40,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2134024654, now seen corresponding path program 4 times [2023-12-02 15:13:40,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:13:40,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557699984] [2023-12-02 15:13:40,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:13:40,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:13:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:13:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-12-02 15:13:45,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:13:45,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557699984] [2023-12-02 15:13:45,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557699984] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:13:45,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94323350] [2023-12-02 15:13:45,048 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 15:13:45,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:13:45,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:13:45,049 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:13:45,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 15:13:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:13:45,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-02 15:13:45,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:13:45,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 15:13:45,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-02 15:13:45,490 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-02 15:13:45,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-12-02 15:13:45,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-02 15:13:45,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:13:45,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 114 [2023-12-02 15:13:45,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:13:45,576 INFO L349 Elim1Store]: treesize reduction 33, result has 13.2 percent of original size [2023-12-02 15:13:45,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 78 [2023-12-02 15:13:45,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:13:45,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2023-12-02 15:13:45,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:13:45,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-02 15:13:45,611 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-12-02 15:13:45,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2023-12-02 15:13:45,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:13:45,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 100 [2023-12-02 15:13:45,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:13:45,656 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 15:13:45,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 72 [2023-12-02 15:13:45,738 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 15:13:45,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 53 [2023-12-02 15:13:45,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-02 15:13:45,848 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 15:13:45,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 53 [2023-12-02 15:13:45,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-02 15:13:45,953 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 15:13:45,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 53 [2023-12-02 15:13:45,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-02 15:13:46,055 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 15:13:46,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 53 [2023-12-02 15:13:46,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-02 15:13:46,156 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 15:13:46,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 53 [2023-12-02 15:13:46,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-02 15:13:46,257 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 15:13:46,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 53 [2023-12-02 15:13:46,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-02 15:13:46,365 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 15:13:46,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 53 [2023-12-02 15:13:46,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-02 15:13:46,468 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 15:13:46,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 53 [2023-12-02 15:13:46,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-02 15:13:46,594 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 15:13:46,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 53 [2023-12-02 15:13:46,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-02 15:13:46,706 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 15:13:46,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 53 [2023-12-02 15:13:46,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-02 15:13:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-12-02 15:13:46,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:13:50,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:13:50,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 779 treesize of output 422 [2023-12-02 15:13:50,659 INFO L349 Elim1Store]: treesize reduction 56, result has 32.5 percent of original size [2023-12-02 15:13:50,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 384 treesize of output 377 [2023-12-02 15:13:51,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98745004 treesize of output 89932546 [2023-12-02 15:14:08,272 WARN L293 SmtUtils]: Spent 17.24s on a formula simplification. DAG size of input: 3387 DAG size of output: 291 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 15:14:08,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4476 treesize of output 4320 [2023-12-02 15:14:08,436 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-12-02 15:14:08,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 441719 treesize of output 433209 [2023-12-02 15:14:08,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3588 treesize of output 3452 [2023-12-02 15:14:09,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3452 treesize of output 3332 [2023-12-02 15:14:09,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3332 treesize of output 3052 [2023-12-02 15:14:09,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3052 treesize of output 2900 [2023-12-02 15:14:09,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2900 treesize of output 2812 [2023-12-02 15:14:09,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2812 treesize of output 2616 [2023-12-02 15:14:09,275 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:14:09,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2625 treesize of output 2555 [2023-12-02 15:14:09,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2550 treesize of output 2518 [2023-12-02 15:14:09,401 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:14:09,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2518 treesize of output 2464 [2023-12-02 15:14:09,457 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:14:09,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2464 treesize of output 2400 [2023-12-02 15:14:09,513 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:14:09,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2400 treesize of output 2336 [2023-12-02 15:14:09,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2336 treesize of output 2288 [2023-12-02 15:14:09,604 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:14:09,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2288 treesize of output 2266 [2023-12-02 15:14:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 40 proven. 29 refuted. 56 times theorem prover too weak. 166 trivial. 0 not checked. [2023-12-02 15:14:10,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94323350] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:14:10,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1172395642] [2023-12-02 15:14:10,219 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-12-02 15:14:10,219 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:14:10,220 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:14:10,220 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:14:10,220 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:14:17,845 INFO L197 IcfgInterpreter]: Interpreting procedure xatoul_sfx with input of size 96 for LOIs [2023-12-02 15:14:18,068 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 94 for LOIs [2023-12-02 15:14:18,084 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:14:28,426 WARN L293 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 258 DAG size of output: 254 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:14:34,134 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10205#(and (= |xatoul_sfx_xatoull_sfx_#in~suffixes#1.base| 11) (<= (+ 2147483640 |xatoul_sfx_xstrtoull_range_sfx_#t~mem133#1|) 0) (= |xatoul_sfx_~str#1.base| |xatoul_sfx_xatoull_sfx_#in~numstr#1.base|) (= |#length| (store |old(#length)| |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base| 8)) (= ~xfunc_error_retval~0 1) (<= 1 |#StackHeapBarrier|) (= |xatoul_sfx_~sfx#1.offset| 0) (= 10 |xatoul_sfx_xstrtoull_range_sfx_#in~base#1|) (= |~#bb_errno_location~0.offset| 0) (= ~optind~0 1) (= |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.offset| 0) (= |xatoul_sfx_xatoull_sfx_#in~numstr#1.offset| |xatoul_sfx_xatoull_sfx_~numstr#1.offset|) (= |xatoul_sfx_~sfx#1.base| 11) (= |xatoul_sfx_xatoull_sfx_#in~suffixes#1.offset| 0) (= ~bb_errno~0.base 9) (= |xatoul_sfx_#in~sfx#1.base| 11) (= |#memory_int| |old(#memory_int)|) (= ~msg_eol~0.base 3) (= (select |old(#valid)| |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base|) 0) (= 11 |xatoul_sfx_xstrtoull_range_sfx_#in~suffixes#1.base|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |xatoul_sfx_xstrtoull_range_sfx_#in~lower#1| 0) (= |xatoul_sfx_xstrtoull_range_sfx_~tmp_if_expr$1~1#1| 0) (= |xatoul_sfx_xstrtoull_range_sfx_#in~numstr#1.base| |xatoul_sfx_xatoull_sfx_~numstr#1.base|) (= |xatoul_sfx_xstrtoull_range_sfx_~base#1| 10) (= (store |old(#valid)| |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base| 1) |#valid|) (exists ((|v_ULTIMATE.start_main_~argv~0#1.base_BEFORE_CALL_4| Int)) (and (or (not (= (select (select |old(#memory_$Pointer$.base)| |v_ULTIMATE.start_main_~argv~0#1.base_BEFORE_CALL_4|) 8) 0)) (not (= (select (select |old(#memory_$Pointer$.offset)| |v_ULTIMATE.start_main_~argv~0#1.base_BEFORE_CALL_4|) 8) 0))) (= |xatoul_sfx_#in~str#1.base| (select (select |old(#memory_$Pointer$.base)| |v_ULTIMATE.start_main_~argv~0#1.base_BEFORE_CALL_4|) 8)) (= (select (select |old(#memory_$Pointer$.offset)| |v_ULTIMATE.start_main_~argv~0#1.base_BEFORE_CALL_4|) 8) |xatoul_sfx_#in~str#1.offset|))) (= |xatoul_sfx_xstrtoull_range_sfx_~suffixes#1.base| 11) (= |xatoul_sfx_~str#1.offset| |xatoul_sfx_#in~str#1.offset|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |~#sfx~0.base| 11) (= |xatoul_sfx_xatoull_sfx_~suffixes#1.base| 11) (= |xatoul_sfx_xatoull_sfx_#in~numstr#1.base| |xatoul_sfx_xatoull_sfx_~numstr#1.base|) (= |xatoul_sfx_xstrtoull_range_sfx_#in~numstr#1.offset| |xatoul_sfx_xstrtoull_range_sfx_~numstr#1.offset|) (= |~#bb_errno_location~0.base| 9) (= ~msg_eol~0.offset 0) (= |xatoul_sfx_xatoull_sfx_~suffixes#1.offset| 0) (<= (+ |#StackHeapBarrier| 1) |xatoul_sfx_xstrtoull_range_sfx_~#e~0#1.base|) (= ~applet_name~0.offset 0) (= ~logmode~0 1) (= |xatoul_sfx_xstrtoull_range_sfx_~lower#1| 0) (= |xatoul_sfx_xstrtoull_range_sfx_~suffixes#1.offset| 0) (= |xatoul_sfx_xstrtoull_range_sfx_#in~numstr#1.offset| |xatoul_sfx_xatoull_sfx_~numstr#1.offset|) (= (select (select |#memory_int| |xatoul_sfx_xstrtoull_range_sfx_~numstr#1.base|) |xatoul_sfx_xstrtoull_range_sfx_~numstr#1.offset|) |xatoul_sfx_xstrtoull_range_sfx_#t~mem133#1|) (= 18446744073709551615 |xatoul_sfx_xstrtoull_range_sfx_#in~upper#1|) (= |~#sfx~0.offset| 0) (= |xatoul_sfx_xstrtoull_range_sfx_#in~suffixes#1.offset| 0) (= ~bb_errno~0.offset 0) (= |~#dummy_utmp~0.offset| 0) (= 12 |~#dummy_utmp~0.base|) (exists ((|v_#valid_196| (Array Int Int)) (|v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_4| Int) (|v_#length_145| (Array Int Int))) (and (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_4|) (= (store |v_#valid_196| |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_4| 1) |old(#valid)|) (= (select |v_#valid_196| |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_4|) 0) (= |old(#length)| (store |v_#length_145| |v_ULTIMATE.start___main_~#ts~0#1.base_BEFORE_CALL_4| 16)))) (= |xatoul_sfx_xatoull_sfx_#in~numstr#1.offset| |xatoul_sfx_~str#1.offset|) (= |~#die_jmp~0.offset| 0) (= 18446744073709551615 |xatoul_sfx_xstrtoull_range_sfx_~upper#1|) (= |xatoul_sfx_#in~sfx#1.offset| 0) (= |~#die_jmp~0.base| 10) (= |xatoul_sfx_~str#1.base| |xatoul_sfx_#in~str#1.base|) (= |xatoul_sfx_xstrtoull_range_sfx_#in~numstr#1.base| |xatoul_sfx_xstrtoull_range_sfx_~numstr#1.base|) (= ~die_sleep~0 0))' at error location [2023-12-02 15:14:34,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:14:34,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:14:34,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 13] total 23 [2023-12-02 15:14:34,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969402697] [2023-12-02 15:14:34,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:14:34,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 15:14:34,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:14:34,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 15:14:34,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1705, Unknown=29, NotChecked=0, Total=1892 [2023-12-02 15:14:34,137 INFO L87 Difference]: Start difference. First operand 198 states and 231 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:14:36,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:14:36,218 INFO L93 Difference]: Finished difference Result 362 states and 430 transitions. [2023-12-02 15:14:36,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:14:36,219 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-12-02 15:14:36,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:14:36,222 INFO L225 Difference]: With dead ends: 362 [2023-12-02 15:14:36,222 INFO L226 Difference]: Without dead ends: 238 [2023-12-02 15:14:36,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=216, Invalid=2107, Unknown=29, NotChecked=0, Total=2352 [2023-12-02 15:14:36,223 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 38 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:14:36,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1234 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 15:14:36,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-02 15:14:36,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 232. [2023-12-02 15:14:36,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 194 states have (on average 1.268041237113402) internal successors, (246), 217 states have internal predecessors, (246), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:14:36,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 266 transitions. [2023-12-02 15:14:36,242 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 266 transitions. Word has length 82 [2023-12-02 15:14:36,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:14:36,243 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 266 transitions. [2023-12-02 15:14:36,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:14:36,243 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 266 transitions. [2023-12-02 15:14:36,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 15:14:36,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:14:36,244 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:14:36,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 15:14:36,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 15:14:36,445 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting xatoul_sfxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-12-02 15:14:36,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:14:36,445 INFO L85 PathProgramCache]: Analyzing trace with hash 833331709, now seen corresponding path program 5 times [2023-12-02 15:14:36,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:14:36,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036642859] [2023-12-02 15:14:36,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:14:36,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:14:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:14:45,010 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 0 proven. 471 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-12-02 15:14:45,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:14:45,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036642859] [2023-12-02 15:14:45,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036642859] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:14:45,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079029305] [2023-12-02 15:14:45,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:14:45,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:14:45,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:14:45,012 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:14:45,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4655fa3-228d-49a8-848c-86e3812067b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process