./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/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_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/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_de65c06d-99e1-4e82-b75d-493b887f1ef9/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 97427099fd8bef469ca09935f2571171b3c2da310fd359d755dfdaf75f2e6e9e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:06:37,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:06:38,121 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 05:06:38,131 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:06:38,132 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:06:38,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:06:38,184 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:06:38,185 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:06:38,187 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:06:38,193 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:06:38,193 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:06:38,195 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:06:38,195 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:06:38,198 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:06:38,198 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:06:38,199 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:06:38,199 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:06:38,200 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:06:38,200 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:06:38,201 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:06:38,203 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:06:38,204 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:06:38,205 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:06:38,206 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:06:38,206 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:06:38,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:06:38,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:06:38,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:06:38,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:06:38,209 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:06:38,211 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:06:38,211 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:06:38,211 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:06:38,212 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:06:38,212 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:06:38,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:06:38,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:06:38,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:06:38,214 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:06:38,214 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:06:38,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:06:38,215 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:06:38,215 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:06:38,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:06:38,216 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_de65c06d-99e1-4e82-b75d-493b887f1ef9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97427099fd8bef469ca09935f2571171b3c2da310fd359d755dfdaf75f2e6e9e [2023-11-19 05:06:38,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:06:38,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:06:38,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:06:38,650 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:06:38,651 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:06:38,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-1.i [2023-11-19 05:06:41,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:06:42,579 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:06:42,580 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-1.i [2023-11-19 05:06:42,620 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/data/0930e5904/1d1103745bd0404cbd8df9b0735d3246/FLAG92d57957f [2023-11-19 05:06:42,636 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/data/0930e5904/1d1103745bd0404cbd8df9b0735d3246 [2023-11-19 05:06:42,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:06:42,640 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:06:42,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:06:42,642 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:06:42,652 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:06:42,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:06:42" (1/1) ... [2023-11-19 05:06:42,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c55bac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:42, skipping insertion in model container [2023-11-19 05:06:42,654 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:06:42" (1/1) ... [2023-11-19 05:06:42,834 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:06:45,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:06:46,023 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:06:46,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:06:46,818 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:06:46,819 WARN L675 CHandler]: The function x2x_utoa is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:06:46,819 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:06:46,819 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:06:46,819 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:06:46,819 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:06:46,820 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:06:46,820 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:06:46,820 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:06:46,820 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:06:46,820 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:06:46,821 WARN L675 CHandler]: The function ctime is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:06:46,821 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:06:46,829 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:06:46,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:46 WrapperNode [2023-11-19 05:06:46,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:06:46,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:06:46,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:06:46,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:06:46,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:46" (1/1) ... [2023-11-19 05:06:46,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:46" (1/1) ... [2023-11-19 05:06:47,185 INFO L138 Inliner]: procedures = 743, calls = 1282, calls flagged for inlining = 68, calls inlined = 66, statements flattened = 4693 [2023-11-19 05:06:47,186 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:06:47,187 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:06:47,187 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:06:47,187 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:06:47,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:46" (1/1) ... [2023-11-19 05:06:47,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:46" (1/1) ... [2023-11-19 05:06:47,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:46" (1/1) ... [2023-11-19 05:06:47,306 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:46" (1/1) ... [2023-11-19 05:06:47,437 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:46" (1/1) ... [2023-11-19 05:06:47,475 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:46" (1/1) ... [2023-11-19 05:06:47,501 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:46" (1/1) ... [2023-11-19 05:06:47,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:46" (1/1) ... [2023-11-19 05:06:47,558 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:06:47,559 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:06:47,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:06:47,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:06:47,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:46" (1/1) ... [2023-11-19 05:06:47,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:06:47,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:06:47,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:06:47,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:06:47,666 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-19 05:06:47,666 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-19 05:06:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure ctime [2023-11-19 05:06:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached [2023-11-19 05:06:47,667 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached [2023-11-19 05:06:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-19 05:06:47,667 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-19 05:06:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-19 05:06:47,668 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-19 05:06:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure utoa [2023-11-19 05:06:47,669 INFO L138 BoogieDeclarations]: Found implementation of procedure utoa [2023-11-19 05:06:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 05:06:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure print_name [2023-11-19 05:06:47,669 INFO L138 BoogieDeclarations]: Found implementation of procedure print_name [2023-11-19 05:06:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-19 05:06:47,671 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-19 05:06:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 05:06:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-19 05:06:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:06:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure xzalloc [2023-11-19 05:06:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure xzalloc [2023-11-19 05:06:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure count_dirs [2023-11-19 05:06:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure count_dirs [2023-11-19 05:06:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure my_stat [2023-11-19 05:06:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure my_stat [2023-11-19 05:06:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:06:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 05:06:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 05:06:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:06:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:06:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:06:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-19 05:06:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 05:06:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:06:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:06:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure dnsort [2023-11-19 05:06:47,676 INFO L138 BoogieDeclarations]: Found implementation of procedure dnsort [2023-11-19 05:06:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure printable_string [2023-11-19 05:06:47,676 INFO L138 BoogieDeclarations]: Found implementation of procedure printable_string [2023-11-19 05:06:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:06:47,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:06:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 05:06:47,677 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 05:06:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 05:06:47,677 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 05:06:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 05:06:47,678 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 05:06:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:06:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:06:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-19 05:06:47,680 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-19 05:06:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached_groupname [2023-11-19 05:06:47,681 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached_groupname [2023-11-19 05:06:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure sort_and_display_files [2023-11-19 05:06:47,682 INFO L138 BoogieDeclarations]: Found implementation of procedure sort_and_display_files [2023-11-19 05:06:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-19 05:06:47,682 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-19 05:06:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:06:47,682 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:06:47,683 INFO L130 BoogieDeclarations]: Found specification of procedure fgcolor [2023-11-19 05:06:47,683 INFO L138 BoogieDeclarations]: Found implementation of procedure fgcolor [2023-11-19 05:06:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:06:47,684 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:06:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:06:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure splitdnarray [2023-11-19 05:06:47,685 INFO L138 BoogieDeclarations]: Found implementation of procedure splitdnarray [2023-11-19 05:06:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:06:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure bold [2023-11-19 05:06:47,685 INFO L138 BoogieDeclarations]: Found implementation of procedure bold [2023-11-19 05:06:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:06:47,686 INFO L130 BoogieDeclarations]: Found specification of procedure append_char [2023-11-19 05:06:47,686 INFO L138 BoogieDeclarations]: Found implementation of procedure append_char [2023-11-19 05:06:47,686 INFO L130 BoogieDeclarations]: Found specification of procedure scan_and_display_dirs_recur [2023-11-19 05:06:47,686 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_and_display_dirs_recur [2023-11-19 05:06:47,687 INFO L130 BoogieDeclarations]: Found specification of procedure lstat [2023-11-19 05:06:47,688 INFO L138 BoogieDeclarations]: Found implementation of procedure lstat [2023-11-19 05:06:47,688 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 05:06:47,688 INFO L130 BoogieDeclarations]: Found specification of procedure wh_helper [2023-11-19 05:06:47,688 INFO L138 BoogieDeclarations]: Found implementation of procedure wh_helper [2023-11-19 05:06:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:06:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg [2023-11-19 05:06:47,690 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg [2023-11-19 05:06:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-19 05:06:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure isatty [2023-11-19 05:06:47,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isatty [2023-11-19 05:06:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure dnalloc [2023-11-19 05:06:47,691 INFO L138 BoogieDeclarations]: Found implementation of procedure dnalloc [2023-11-19 05:06:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 05:06:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 05:06:47,691 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 05:06:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:06:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-11-19 05:06:48,625 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:06:48,629 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:06:54,202 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:06:57,309 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:06:57,309 INFO L302 CfgBuilder]: Removed 66 assume(true) statements. [2023-11-19 05:06:57,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:06:57 BoogieIcfgContainer [2023-11-19 05:06:57,326 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:06:57,330 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:06:57,330 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:06:57,334 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:06:57,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:06:42" (1/3) ... [2023-11-19 05:06:57,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461bc193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:06:57, skipping insertion in model container [2023-11-19 05:06:57,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:46" (2/3) ... [2023-11-19 05:06:57,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461bc193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:06:57, skipping insertion in model container [2023-11-19 05:06:57,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:06:57" (3/3) ... [2023-11-19 05:06:57,341 INFO L112 eAbstractionObserver]: Analyzing ICFG ls-incomplete-1.i [2023-11-19 05:06:57,366 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:06:57,366 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 135 error locations. [2023-11-19 05:06:57,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:06:57,475 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;@120608ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:06:57,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 135 error locations. [2023-11-19 05:06:57,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 1023 states, 755 states have (on average 1.6251655629139072) internal successors, (1227), 898 states have internal predecessors, (1227), 101 states have call successors, (101), 32 states have call predecessors, (101), 32 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-19 05:06:57,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:06:57,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:57,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:06:57,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 05:06:57,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:57,508 INFO L85 PathProgramCache]: Analyzing trace with hash 4965939, now seen corresponding path program 1 times [2023-11-19 05:06:57,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:57,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311217552] [2023-11-19 05:06:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:57,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:58,410 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 05:06:58,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:06:58,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311217552] [2023-11-19 05:06:58,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311217552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:06:58,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:06:58,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:06:58,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128996847] [2023-11-19 05:06:58,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:06:58,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:06:58,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:06:58,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:06:58,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:06:58,473 INFO L87 Difference]: Start difference. First operand has 1023 states, 755 states have (on average 1.6251655629139072) internal successors, (1227), 898 states have internal predecessors, (1227), 101 states have call successors, (101), 32 states have call predecessors, (101), 32 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) 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 05:07:01,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:01,527 INFO L93 Difference]: Finished difference Result 1994 states and 2854 transitions. [2023-11-19 05:07:01,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:01,530 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 05:07:01,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:01,557 INFO L225 Difference]: With dead ends: 1994 [2023-11-19 05:07:01,557 INFO L226 Difference]: Without dead ends: 969 [2023-11-19 05:07:01,579 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 05:07:01,583 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 1 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2216 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:01,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2216 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-19 05:07:01,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2023-11-19 05:07:01,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 969. [2023-11-19 05:07:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 724 states have (on average 1.5290055248618784) internal successors, (1107), 853 states have internal predecessors, (1107), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 05:07:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1288 transitions. [2023-11-19 05:07:01,708 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1288 transitions. Word has length 3 [2023-11-19 05:07:01,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:01,709 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1288 transitions. [2023-11-19 05:07:01,709 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 05:07:01,710 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1288 transitions. [2023-11-19 05:07:01,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:07:01,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:01,714 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 05:07:01,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:07:01,714 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 05:07:01,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:01,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1914252424, now seen corresponding path program 1 times [2023-11-19 05:07:01,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:01,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854032808] [2023-11-19 05:07:01,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:01,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:02,067 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 05:07:02,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:02,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854032808] [2023-11-19 05:07:02,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854032808] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:07:02,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222172394] [2023-11-19 05:07:02,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:02,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:07:02,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:07:02,075 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:07:02,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:07:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:02,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:07:02,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:07:03,004 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 05:07:03,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:07:03,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222172394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:03,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:07:03,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 05:07:03,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743211058] [2023-11-19 05:07:03,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:03,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:07:03,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:03,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:07:03,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:07:03,009 INFO L87 Difference]: Start difference. First operand 969 states and 1288 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 05:07:05,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:07:07,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:07,126 INFO L93 Difference]: Finished difference Result 969 states and 1288 transitions. [2023-11-19 05:07:07,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:07:07,128 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 05:07:07,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:07,137 INFO L225 Difference]: With dead ends: 969 [2023-11-19 05:07:07,137 INFO L226 Difference]: Without dead ends: 968 [2023-11-19 05:07:07,138 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 05:07:07,140 INFO L413 NwaCegarLoop]: 1100 mSDtfsCounter, 3 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:07,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2200 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-19 05:07:07,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2023-11-19 05:07:07,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2023-11-19 05:07:07,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 724 states have (on average 1.5276243093922652) internal successors, (1106), 852 states have internal predecessors, (1106), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 05:07:07,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1287 transitions. [2023-11-19 05:07:07,198 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1287 transitions. Word has length 6 [2023-11-19 05:07:07,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:07,199 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 1287 transitions. [2023-11-19 05:07:07,199 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 05:07:07,199 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1287 transitions. [2023-11-19 05:07:07,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:07:07,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:07,200 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-19 05:07:07,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:07:07,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:07:07,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 05:07:07,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:07,416 INFO L85 PathProgramCache]: Analyzing trace with hash -787714128, now seen corresponding path program 1 times [2023-11-19 05:07:07,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:07,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940037311] [2023-11-19 05:07:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:07,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:07,657 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 05:07:07,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:07,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940037311] [2023-11-19 05:07:07,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940037311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:07,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:07,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:07:07,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198484709] [2023-11-19 05:07:07,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:07,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:07,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:07,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:07,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:07,662 INFO L87 Difference]: Start difference. First operand 968 states and 1287 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 05:07:11,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:11,095 INFO L93 Difference]: Finished difference Result 968 states and 1287 transitions. [2023-11-19 05:07:11,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:11,096 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 05:07:11,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:11,105 INFO L225 Difference]: With dead ends: 968 [2023-11-19 05:07:11,105 INFO L226 Difference]: Without dead ends: 967 [2023-11-19 05:07:11,106 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 05:07:11,107 INFO L413 NwaCegarLoop]: 1100 mSDtfsCounter, 0 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:11,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2200 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-19 05:07:11,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2023-11-19 05:07:11,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 965. [2023-11-19 05:07:11,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 722 states have (on average 1.5277008310249307) internal successors, (1103), 849 states have internal predecessors, (1103), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 05:07:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1284 transitions. [2023-11-19 05:07:11,154 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1284 transitions. Word has length 7 [2023-11-19 05:07:11,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:11,154 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1284 transitions. [2023-11-19 05:07:11,155 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 05:07:11,155 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1284 transitions. [2023-11-19 05:07:11,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:07:11,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:11,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:11,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:07:11,158 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 05:07:11,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:11,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1199951397, now seen corresponding path program 1 times [2023-11-19 05:07:11,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:11,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008373769] [2023-11-19 05:07:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:11,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:11,645 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 05:07:11,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:11,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008373769] [2023-11-19 05:07:11,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008373769] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:07:11,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456888070] [2023-11-19 05:07:11,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:11,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:07:11,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:07:11,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:07:11,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:07:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:12,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:07:12,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:07:12,466 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 05:07:12,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:07:12,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456888070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:12,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:07:12,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:07:12,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128569665] [2023-11-19 05:07:12,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:12,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:12,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:12,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:12,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:07:12,472 INFO L87 Difference]: Start difference. First operand 965 states and 1284 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 05:07:16,870 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 05:07:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:17,628 INFO L93 Difference]: Finished difference Result 965 states and 1284 transitions. [2023-11-19 05:07:17,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:17,629 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 05:07:17,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:17,639 INFO L225 Difference]: With dead ends: 965 [2023-11-19 05:07:17,639 INFO L226 Difference]: Without dead ends: 963 [2023-11-19 05:07:17,640 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 05:07:17,641 INFO L413 NwaCegarLoop]: 1093 mSDtfsCounter, 383 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:17,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 1841 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2023-11-19 05:07:17,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2023-11-19 05:07:17,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2023-11-19 05:07:17,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 722 states have (on average 1.5249307479224377) internal successors, (1101), 847 states have internal predecessors, (1101), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 05:07:17,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1282 transitions. [2023-11-19 05:07:17,705 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1282 transitions. Word has length 9 [2023-11-19 05:07:17,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:17,706 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1282 transitions. [2023-11-19 05:07:17,707 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 05:07:17,707 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1282 transitions. [2023-11-19 05:07:17,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:07:17,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:17,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:17,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:07:17,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:07:17,931 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 05:07:17,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:17,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1456209476, now seen corresponding path program 1 times [2023-11-19 05:07:17,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:17,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238214566] [2023-11-19 05:07:17,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:17,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:18,269 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 05:07:18,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:18,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238214566] [2023-11-19 05:07:18,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238214566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:07:18,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295717800] [2023-11-19 05:07:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:18,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:07:18,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:07:18,272 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:07:18,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65c06d-99e1-4e82-b75d-493b887f1ef9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:07:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:18,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:07:18,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:07:18,971 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 05:07:18,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:07:18,999 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 05:07:19,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295717800] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:07:19,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1182824976] [2023-11-19 05:07:19,020 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 05:07:19,020 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:07:19,023 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:07:19,028 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:07:19,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs