./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ --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 d1800e6a7093aef170e24bf50f0eb7e2646af9a10c241229886d0a1c02e7e0dd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:49:52,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:49:52,963 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 04:49:52,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:49:52,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:49:53,002 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:49:53,003 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:49:53,004 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:49:53,005 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:49:53,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:49:53,009 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:49:53,010 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:49:53,010 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:49:53,016 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:49:53,016 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:49:53,017 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:49:53,017 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:49:53,018 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:49:53,019 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:49:53,020 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:49:53,020 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:49:53,021 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:49:53,022 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:49:53,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:49:53,023 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:49:53,024 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:49:53,024 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:49:53,025 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:49:53,025 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:49:53,025 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:49:53,027 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:49:53,027 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:49:53,028 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:49:53,028 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:49:53,028 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:49:53,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:49:53,029 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:49:53,029 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:49:53,030 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:49:53,030 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:49:53,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:49:53,031 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:49:53,031 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:49:53,031 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:49:53,032 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_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1800e6a7093aef170e24bf50f0eb7e2646af9a10c241229886d0a1c02e7e0dd [2023-11-19 04:49:53,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:49:53,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:49:53,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:49:53,446 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:49:53,446 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:49:53,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i [2023-11-19 04:49:56,763 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:49:57,473 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:49:57,473 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i [2023-11-19 04:49:57,523 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/data/9cba2ca53/9cf925ee2f9642b7b1a4de7bb41191e6/FLAG0192dd235 [2023-11-19 04:49:57,550 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/data/9cba2ca53/9cf925ee2f9642b7b1a4de7bb41191e6 [2023-11-19 04:49:57,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:49:57,562 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:49:57,568 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:49:57,568 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:49:57,575 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:49:57,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:49:57" (1/1) ... [2023-11-19 04:49:57,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49fe04ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:57, skipping insertion in model container [2023-11-19 04:49:57,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:49:57" (1/1) ... [2023-11-19 04:49:57,729 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:50:00,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:00,543 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:50:00,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:01,123 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:01,124 WARN L675 CHandler]: The function x2x_utoa is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:01,124 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:01,124 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:01,124 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:01,124 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:01,124 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:01,125 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:01,125 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:01,125 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:01,125 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:01,125 WARN L675 CHandler]: The function ctime is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:01,126 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:01,134 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:50:01,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:01 WrapperNode [2023-11-19 04:50:01,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:50:01,136 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:50:01,136 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:50:01,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:50:01,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:01" (1/1) ... [2023-11-19 04:50:01,283 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:01" (1/1) ... [2023-11-19 04:50:01,494 INFO L138 Inliner]: procedures = 743, calls = 1285, calls flagged for inlining = 67, calls inlined = 65, statements flattened = 4660 [2023-11-19 04:50:01,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:50:01,496 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:50:01,496 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:50:01,496 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:50:01,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:01" (1/1) ... [2023-11-19 04:50:01,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:01" (1/1) ... [2023-11-19 04:50:01,542 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:01" (1/1) ... [2023-11-19 04:50:01,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:01" (1/1) ... [2023-11-19 04:50:01,685 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:01" (1/1) ... [2023-11-19 04:50:01,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:01" (1/1) ... [2023-11-19 04:50:01,838 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:01" (1/1) ... [2023-11-19 04:50:01,865 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:01" (1/1) ... [2023-11-19 04:50:01,911 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:50:01,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:50:01,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:50:01,913 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:50:01,914 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:01" (1/1) ... [2023-11-19 04:50:01,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:50:01,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:50:01,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:50:01,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:50:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-19 04:50:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-19 04:50:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure ctime [2023-11-19 04:50:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached [2023-11-19 04:50:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached [2023-11-19 04:50:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-19 04:50:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-19 04:50:02,005 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-19 04:50:02,005 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-19 04:50:02,005 INFO L130 BoogieDeclarations]: Found specification of procedure utoa [2023-11-19 04:50:02,006 INFO L138 BoogieDeclarations]: Found implementation of procedure utoa [2023-11-19 04:50:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 04:50:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure print_name [2023-11-19 04:50:02,006 INFO L138 BoogieDeclarations]: Found implementation of procedure print_name [2023-11-19 04:50:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-19 04:50:02,007 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-19 04:50:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 04:50:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-19 04:50:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:50:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure xzalloc [2023-11-19 04:50:02,009 INFO L138 BoogieDeclarations]: Found implementation of procedure xzalloc [2023-11-19 04:50:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure count_dirs [2023-11-19 04:50:02,009 INFO L138 BoogieDeclarations]: Found implementation of procedure count_dirs [2023-11-19 04:50:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure my_stat [2023-11-19 04:50:02,011 INFO L138 BoogieDeclarations]: Found implementation of procedure my_stat [2023-11-19 04:50:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 04:50:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 04:50:02,012 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 04:50:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:50:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:50:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure dfree [2023-11-19 04:50:02,013 INFO L138 BoogieDeclarations]: Found implementation of procedure dfree [2023-11-19 04:50:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:50:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-19 04:50:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 04:50:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:50:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:50:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure dnsort [2023-11-19 04:50:02,014 INFO L138 BoogieDeclarations]: Found implementation of procedure dnsort [2023-11-19 04:50:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure printable_string [2023-11-19 04:50:02,014 INFO L138 BoogieDeclarations]: Found implementation of procedure printable_string [2023-11-19 04:50:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:50:02,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:50:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 04:50:02,015 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 04:50:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 04:50:02,015 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 04:50:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 04:50:02,016 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 04:50:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 04:50:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:50:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-19 04:50:02,018 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-19 04:50:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached_groupname [2023-11-19 04:50:02,019 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached_groupname [2023-11-19 04:50:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure sort_and_display_files [2023-11-19 04:50:02,019 INFO L138 BoogieDeclarations]: Found implementation of procedure sort_and_display_files [2023-11-19 04:50:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-19 04:50:02,020 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-19 04:50:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:50:02,020 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:50:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure fgcolor [2023-11-19 04:50:02,021 INFO L138 BoogieDeclarations]: Found implementation of procedure fgcolor [2023-11-19 04:50:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:50:02,021 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:50:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:50:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure splitdnarray [2023-11-19 04:50:02,022 INFO L138 BoogieDeclarations]: Found implementation of procedure splitdnarray [2023-11-19 04:50:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:50:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure bold [2023-11-19 04:50:02,022 INFO L138 BoogieDeclarations]: Found implementation of procedure bold [2023-11-19 04:50:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:50:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure append_char [2023-11-19 04:50:02,023 INFO L138 BoogieDeclarations]: Found implementation of procedure append_char [2023-11-19 04:50:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure scan_and_display_dirs_recur [2023-11-19 04:50:02,024 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_and_display_dirs_recur [2023-11-19 04:50:02,024 INFO L130 BoogieDeclarations]: Found specification of procedure lstat [2023-11-19 04:50:02,025 INFO L138 BoogieDeclarations]: Found implementation of procedure lstat [2023-11-19 04:50:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 04:50:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure wh_helper [2023-11-19 04:50:02,026 INFO L138 BoogieDeclarations]: Found implementation of procedure wh_helper [2023-11-19 04:50:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:50:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg [2023-11-19 04:50:02,026 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg [2023-11-19 04:50:02,027 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-19 04:50:02,027 INFO L130 BoogieDeclarations]: Found specification of procedure isatty [2023-11-19 04:50:02,027 INFO L138 BoogieDeclarations]: Found implementation of procedure isatty [2023-11-19 04:50:02,027 INFO L130 BoogieDeclarations]: Found specification of procedure dnalloc [2023-11-19 04:50:02,027 INFO L138 BoogieDeclarations]: Found implementation of procedure dnalloc [2023-11-19 04:50:02,028 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 04:50:02,028 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 04:50:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 04:50:02,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:50:02,028 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-11-19 04:50:02,841 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:50:02,848 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:50:07,805 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:50:10,850 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:50:10,850 INFO L302 CfgBuilder]: Removed 66 assume(true) statements. [2023-11-19 04:50:10,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:10 BoogieIcfgContainer [2023-11-19 04:50:10,862 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:50:10,865 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:50:10,865 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:50:10,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:50:10,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:49:57" (1/3) ... [2023-11-19 04:50:10,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b571894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:10, skipping insertion in model container [2023-11-19 04:50:10,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:01" (2/3) ... [2023-11-19 04:50:10,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b571894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:10, skipping insertion in model container [2023-11-19 04:50:10,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:10" (3/3) ... [2023-11-19 04:50:10,872 INFO L112 eAbstractionObserver]: Analyzing ICFG ls-incomplete-2.i [2023-11-19 04:50:10,895 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:50:10,895 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 127 error locations. [2023-11-19 04:50:10,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:50:10,982 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;@1ba4508f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:50:10,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 127 error locations. [2023-11-19 04:50:10,995 INFO L276 IsEmpty]: Start isEmpty. Operand has 1011 states, 747 states have (on average 1.6211512717536813) internal successors, (1211), 883 states have internal predecessors, (1211), 104 states have call successors, (104), 33 states have call predecessors, (104), 33 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-19 04:50:11,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:50:11,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:11,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:50:11,006 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 124 more)] === [2023-11-19 04:50:11,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:11,014 INFO L85 PathProgramCache]: Analyzing trace with hash 4957707, now seen corresponding path program 1 times [2023-11-19 04:50:11,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:11,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155952762] [2023-11-19 04:50:11,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:11,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:11,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:11,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155952762] [2023-11-19 04:50:11,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155952762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:11,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:11,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:50:11,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487019918] [2023-11-19 04:50:11,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:11,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:11,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:11,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:11,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:11,881 INFO L87 Difference]: Start difference. First operand has 1011 states, 747 states have (on average 1.6211512717536813) internal successors, (1211), 883 states have internal predecessors, (1211), 104 states have call successors, (104), 33 states have call predecessors, (104), 33 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) 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) [2023-11-19 04:50:14,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:50:15,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:15,607 INFO L93 Difference]: Finished difference Result 1970 states and 2837 transitions. [2023-11-19 04:50:15,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:15,612 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 [2023-11-19 04:50:15,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:15,640 INFO L225 Difference]: With dead ends: 1970 [2023-11-19 04:50:15,641 INFO L226 Difference]: Without dead ends: 957 [2023-11-19 04:50:15,653 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 [2023-11-19 04:50:15,657 INFO L413 NwaCegarLoop]: 1099 mSDtfsCounter, 1 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2196 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:15,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2196 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-19 04:50:15,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2023-11-19 04:50:15,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 957. [2023-11-19 04:50:15,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 716 states have (on average 1.5237430167597765) internal successors, (1091), 838 states have internal predecessors, (1091), 97 states have call successors, (97), 32 states have call predecessors, (97), 31 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-19 04:50:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1278 transitions. [2023-11-19 04:50:15,778 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1278 transitions. Word has length 3 [2023-11-19 04:50:15,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:15,778 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1278 transitions. [2023-11-19 04:50:15,779 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) [2023-11-19 04:50:15,779 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1278 transitions. [2023-11-19 04:50:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:50:15,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:15,780 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 04:50:15,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:50:15,780 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 124 more)] === [2023-11-19 04:50:15,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:15,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1668996031, now seen corresponding path program 1 times [2023-11-19 04:50:15,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:15,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805943878] [2023-11-19 04:50:15,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:15,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:16,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:16,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:16,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805943878] [2023-11-19 04:50:16,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805943878] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:50:16,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791244354] [2023-11-19 04:50:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:16,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:50:16,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:50:16,197 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:50:16,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:50:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:17,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:50:17,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:50:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:17,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:50:17,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791244354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:17,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:50:17,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 04:50:17,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170290251] [2023-11-19 04:50:17,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:17,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:50:17,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:17,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:50:17,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:50:17,064 INFO L87 Difference]: Start difference. First operand 957 states and 1278 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) [2023-11-19 04:50:20,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:50:21,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:21,505 INFO L93 Difference]: Finished difference Result 957 states and 1278 transitions. [2023-11-19 04:50:21,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:50:21,506 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 [2023-11-19 04:50:21,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:21,513 INFO L225 Difference]: With dead ends: 957 [2023-11-19 04:50:21,513 INFO L226 Difference]: Without dead ends: 956 [2023-11-19 04:50:21,514 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 [2023-11-19 04:50:21,515 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 3 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:21,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2180 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 368 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2023-11-19 04:50:21,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2023-11-19 04:50:21,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 956. [2023-11-19 04:50:21,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 716 states have (on average 1.5223463687150838) internal successors, (1090), 837 states have internal predecessors, (1090), 97 states have call successors, (97), 32 states have call predecessors, (97), 31 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-19 04:50:21,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1277 transitions. [2023-11-19 04:50:21,563 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1277 transitions. Word has length 6 [2023-11-19 04:50:21,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:21,563 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1277 transitions. [2023-11-19 04:50:21,563 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) [2023-11-19 04:50:21,564 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1277 transitions. [2023-11-19 04:50:21,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:50:21,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:21,564 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-19 04:50:21,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 04:50:21,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:50:21,784 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 124 more)] === [2023-11-19 04:50:21,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:21,785 INFO L85 PathProgramCache]: Analyzing trace with hash 199272264, now seen corresponding path program 1 times [2023-11-19 04:50:21,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:21,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475217201] [2023-11-19 04:50:21,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:21,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:22,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:50:22,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:22,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475217201] [2023-11-19 04:50:22,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475217201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:22,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:22,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:50:22,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726940345] [2023-11-19 04:50:22,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:22,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:22,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:22,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:22,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:22,033 INFO L87 Difference]: Start difference. First operand 956 states and 1277 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) [2023-11-19 04:50:25,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:50:26,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:26,422 INFO L93 Difference]: Finished difference Result 956 states and 1277 transitions. [2023-11-19 04:50:26,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:26,423 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 [2023-11-19 04:50:26,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:26,431 INFO L225 Difference]: With dead ends: 956 [2023-11-19 04:50:26,431 INFO L226 Difference]: Without dead ends: 955 [2023-11-19 04:50:26,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:26,437 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 0 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:26,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2180 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 362 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2023-11-19 04:50:26,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2023-11-19 04:50:26,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 953. [2023-11-19 04:50:26,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 714 states have (on average 1.522408963585434) internal successors, (1087), 834 states have internal predecessors, (1087), 97 states have call successors, (97), 32 states have call predecessors, (97), 31 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-19 04:50:26,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1274 transitions. [2023-11-19 04:50:26,558 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1274 transitions. Word has length 7 [2023-11-19 04:50:26,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:26,559 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1274 transitions. [2023-11-19 04:50:26,559 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) [2023-11-19 04:50:26,559 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1274 transitions. [2023-11-19 04:50:26,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:50:26,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:26,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:26,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:50:26,560 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 124 more)] === [2023-11-19 04:50:26,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:26,561 INFO L85 PathProgramCache]: Analyzing trace with hash 482240635, now seen corresponding path program 1 times [2023-11-19 04:50:26,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:26,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088338742] [2023-11-19 04:50:26,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:26,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:26,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:26,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088338742] [2023-11-19 04:50:26,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088338742] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:50:26,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614190367] [2023-11-19 04:50:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:26,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:50:26,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:50:26,900 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:50:26,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:50:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:27,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:50:27,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:50:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:50:27,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:50:27,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614190367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:27,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:50:27,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:50:27,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74740922] [2023-11-19 04:50:27,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:27,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:27,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:27,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:27,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:50:27,668 INFO L87 Difference]: Start difference. First operand 953 states and 1274 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) [2023-11-19 04:50:31,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:50:31,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:31,910 INFO L93 Difference]: Finished difference Result 953 states and 1274 transitions. [2023-11-19 04:50:31,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:31,911 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 [2023-11-19 04:50:31,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:31,919 INFO L225 Difference]: With dead ends: 953 [2023-11-19 04:50:31,919 INFO L226 Difference]: Without dead ends: 951 [2023-11-19 04:50:31,920 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 [2023-11-19 04:50:31,921 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 383 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:31,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1819 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-19 04:50:31,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2023-11-19 04:50:31,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 951. [2023-11-19 04:50:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 714 states have (on average 1.5196078431372548) internal successors, (1085), 832 states have internal predecessors, (1085), 97 states have call successors, (97), 32 states have call predecessors, (97), 31 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-19 04:50:31,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1272 transitions. [2023-11-19 04:50:31,967 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1272 transitions. Word has length 9 [2023-11-19 04:50:31,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:31,968 INFO L495 AbstractCegarLoop]: Abstraction has 951 states and 1272 transitions. [2023-11-19 04:50:31,969 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) [2023-11-19 04:50:31,969 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1272 transitions. [2023-11-19 04:50:31,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:50:31,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:31,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:32,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:50:32,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:50:32,188 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 124 more)] === [2023-11-19 04:50:32,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:32,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2064560661, now seen corresponding path program 1 times [2023-11-19 04:50:32,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:32,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746787730] [2023-11-19 04:50:32,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:32,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:32,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:32,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746787730] [2023-11-19 04:50:32,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746787730] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:50:32,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370623557] [2023-11-19 04:50:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:32,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:50:32,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:50:32,489 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:50:32,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f480b5-2e86-4d2c-878b-60ffbec55ac5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:50:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:33,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:50:33,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:50:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:33,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:50:33,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:33,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370623557] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:50:33,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2040364209] [2023-11-19 04:50:33,430 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 04:50:33,431 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:50:33,435 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:50:33,441 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:50:33,442 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs