./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/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_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91 --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 0.2.4-dev-0e0057c [2023-11-24 23:20:45,018 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:20:45,140 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-24 23:20:45,147 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:20:45,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:20:45,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:20:45,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:20:45,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:20:45,209 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:20:45,216 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:20:45,217 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:20:45,217 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:20:45,218 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:20:45,220 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:20:45,220 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:20:45,221 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:20:45,221 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:20:45,222 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:20:45,222 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:20:45,223 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:20:45,237 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:20:45,238 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:20:45,239 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:20:45,239 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:20:45,240 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:20:45,240 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:20:45,240 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:20:45,241 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:20:45,241 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:20:45,242 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:20:45,243 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:20:45,243 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:20:45,243 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:20:45,244 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:20:45,244 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:20:45,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:20:45,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:20:45,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:20:45,245 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:20:45,245 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:20:45,246 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:20:45,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:20:45,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:20:45,247 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:20:45,247 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:20:45,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:20:45,248 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_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1800e6a7093aef170e24bf50f0eb7e2646af9a10c241229886d0a1c02e7e0dd [2023-11-24 23:20:45,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:20:45,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:20:45,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:20:45,556 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:20:45,558 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:20:45,559 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i [2023-11-24 23:20:48,552 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:20:49,189 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:20:49,190 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i [2023-11-24 23:20:49,235 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/data/78b4f48ab/8bb2a552c1d4496f9cc6adc54dede984/FLAG240627f00 [2023-11-24 23:20:49,259 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/data/78b4f48ab/8bb2a552c1d4496f9cc6adc54dede984 [2023-11-24 23:20:49,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:20:49,266 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:20:49,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:20:49,268 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:20:49,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:20:49,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:20:49" (1/1) ... [2023-11-24 23:20:49,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb848e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:49, skipping insertion in model container [2023-11-24 23:20:49,276 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:20:49" (1/1) ... [2023-11-24 23:20:49,413 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:20:52,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:20:52,521 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:20:52,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:20:53,176 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:20:53,176 WARN L675 CHandler]: The function x2x_utoa is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:20:53,176 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:20:53,176 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:20:53,177 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:20:53,177 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:20:53,177 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:20:53,177 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:20:53,177 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:20:53,177 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:20:53,178 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:20:53,178 WARN L675 CHandler]: The function ctime is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:20:53,178 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:20:53,186 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:20:53,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:53 WrapperNode [2023-11-24 23:20:53,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:20:53,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:20:53,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:20:53,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:20:53,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:53" (1/1) ... [2023-11-24 23:20:53,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:53" (1/1) ... [2023-11-24 23:20:53,526 INFO L138 Inliner]: procedures = 743, calls = 1285, calls flagged for inlining = 67, calls inlined = 65, statements flattened = 4670 [2023-11-24 23:20:53,526 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:20:53,527 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:20:53,527 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:20:53,528 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:20:53,537 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:53" (1/1) ... [2023-11-24 23:20:53,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:53" (1/1) ... [2023-11-24 23:20:53,567 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:53" (1/1) ... [2023-11-24 23:20:53,567 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:53" (1/1) ... [2023-11-24 23:20:53,710 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:53" (1/1) ... [2023-11-24 23:20:53,741 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:53" (1/1) ... [2023-11-24 23:20:53,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:53" (1/1) ... [2023-11-24 23:20:53,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:53" (1/1) ... [2023-11-24 23:20:53,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:20:53,845 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:20:53,846 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:20:53,846 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:20:53,847 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:53" (1/1) ... [2023-11-24 23:20:53,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:20:53,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:53,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:20:53,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:20:53,972 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-24 23:20:53,972 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-24 23:20:53,972 INFO L130 BoogieDeclarations]: Found specification of procedure ctime [2023-11-24 23:20:53,973 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached [2023-11-24 23:20:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached [2023-11-24 23:20:53,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-24 23:20:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-24 23:20:53,974 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-24 23:20:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-24 23:20:53,974 INFO L130 BoogieDeclarations]: Found specification of procedure utoa [2023-11-24 23:20:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure utoa [2023-11-24 23:20:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-24 23:20:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure print_name [2023-11-24 23:20:53,976 INFO L138 BoogieDeclarations]: Found implementation of procedure print_name [2023-11-24 23:20:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-24 23:20:53,976 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-24 23:20:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-24 23:20:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-24 23:20:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:20:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure xzalloc [2023-11-24 23:20:53,978 INFO L138 BoogieDeclarations]: Found implementation of procedure xzalloc [2023-11-24 23:20:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure count_dirs [2023-11-24 23:20:53,978 INFO L138 BoogieDeclarations]: Found implementation of procedure count_dirs [2023-11-24 23:20:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure my_stat [2023-11-24 23:20:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure my_stat [2023-11-24 23:20:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:20:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-24 23:20:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-24 23:20:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:20:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:20:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure dfree [2023-11-24 23:20:53,980 INFO L138 BoogieDeclarations]: Found implementation of procedure dfree [2023-11-24 23:20:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:20:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-24 23:20:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-24 23:20:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:20:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:20:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure dnsort [2023-11-24 23:20:53,981 INFO L138 BoogieDeclarations]: Found implementation of procedure dnsort [2023-11-24 23:20:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure printable_string [2023-11-24 23:20:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure printable_string [2023-11-24 23:20:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:20:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:20:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-24 23:20:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-24 23:20:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-24 23:20:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-24 23:20:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-24 23:20:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-24 23:20:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:20:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:20:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-24 23:20:53,986 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-24 23:20:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached_groupname [2023-11-24 23:20:53,987 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached_groupname [2023-11-24 23:20:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure sort_and_display_files [2023-11-24 23:20:53,987 INFO L138 BoogieDeclarations]: Found implementation of procedure sort_and_display_files [2023-11-24 23:20:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-24 23:20:53,987 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-24 23:20:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:20:53,988 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:20:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure fgcolor [2023-11-24 23:20:53,989 INFO L138 BoogieDeclarations]: Found implementation of procedure fgcolor [2023-11-24 23:20:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:20:53,990 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:20:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:20:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure splitdnarray [2023-11-24 23:20:53,990 INFO L138 BoogieDeclarations]: Found implementation of procedure splitdnarray [2023-11-24 23:20:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:20:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure bold [2023-11-24 23:20:53,991 INFO L138 BoogieDeclarations]: Found implementation of procedure bold [2023-11-24 23:20:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:20:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure append_char [2023-11-24 23:20:53,992 INFO L138 BoogieDeclarations]: Found implementation of procedure append_char [2023-11-24 23:20:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure scan_and_display_dirs_recur [2023-11-24 23:20:53,993 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_and_display_dirs_recur [2023-11-24 23:20:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure lstat [2023-11-24 23:20:53,993 INFO L138 BoogieDeclarations]: Found implementation of procedure lstat [2023-11-24 23:20:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-24 23:20:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure wh_helper [2023-11-24 23:20:53,994 INFO L138 BoogieDeclarations]: Found implementation of procedure wh_helper [2023-11-24 23:20:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:20:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg [2023-11-24 23:20:53,995 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg [2023-11-24 23:20:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-24 23:20:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure isatty [2023-11-24 23:20:53,995 INFO L138 BoogieDeclarations]: Found implementation of procedure isatty [2023-11-24 23:20:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure dnalloc [2023-11-24 23:20:53,996 INFO L138 BoogieDeclarations]: Found implementation of procedure dnalloc [2023-11-24 23:20:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-24 23:20:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-24 23:20:53,996 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-24 23:20:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:20:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-11-24 23:20:54,659 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:20:54,663 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:20:59,486 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:21:02,211 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:21:02,212 INFO L309 CfgBuilder]: Removed 66 assume(true) statements. [2023-11-24 23:21:02,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:21:02 BoogieIcfgContainer [2023-11-24 23:21:02,214 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:21:02,217 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:21:02,217 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:21:02,220 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:21:02,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:20:49" (1/3) ... [2023-11-24 23:21:02,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec49716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:21:02, skipping insertion in model container [2023-11-24 23:21:02,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:53" (2/3) ... [2023-11-24 23:21:02,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec49716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:21:02, skipping insertion in model container [2023-11-24 23:21:02,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:21:02" (3/3) ... [2023-11-24 23:21:02,223 INFO L112 eAbstractionObserver]: Analyzing ICFG ls-incomplete-2.i [2023-11-24 23:21:02,244 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:21:02,244 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 127 error locations. [2023-11-24 23:21:02,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:21:02,325 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;@1211b139, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:21:02,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 127 error locations. [2023-11-24 23:21:02,335 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) [2023-11-24 23:21:02,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:21:02,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:02,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:21:02,344 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)] === [2023-11-24 23:21:02,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:02,350 INFO L85 PathProgramCache]: Analyzing trace with hash 4977888, now seen corresponding path program 1 times [2023-11-24 23:21:02,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:02,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965525283] [2023-11-24 23:21:02,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:02,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:21:03,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:03,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965525283] [2023-11-24 23:21:03,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965525283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:21:03,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:21:03,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:21:03,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260275535] [2023-11-24 23:21:03,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:21:03,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:21:03,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:21:03,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:21:03,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:21:03,211 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) [2023-11-24 23:21:06,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:21:06,733 INFO L93 Difference]: Finished difference Result 1970 states and 2837 transitions. [2023-11-24 23:21:06,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:21:06,736 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 [2023-11-24 23:21:06,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:21:06,758 INFO L225 Difference]: With dead ends: 1970 [2023-11-24 23:21:06,759 INFO L226 Difference]: Without dead ends: 957 [2023-11-24 23:21:06,773 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 [2023-11-24 23:21:06,776 INFO L413 NwaCegarLoop]: 1099 mSDtfsCounter, 1 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:21:06,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2196 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-24 23:21:06,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2023-11-24 23:21:06,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 957. [2023-11-24 23:21:06,876 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) [2023-11-24 23:21:06,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1278 transitions. [2023-11-24 23:21:06,888 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1278 transitions. Word has length 3 [2023-11-24 23:21:06,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:21:06,889 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1278 transitions. [2023-11-24 23:21:06,889 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) [2023-11-24 23:21:06,889 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1278 transitions. [2023-11-24 23:21:06,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:21:06,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:06,890 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-24 23:21:06,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:21:06,891 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)] === [2023-11-24 23:21:06,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:06,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2024759094, now seen corresponding path program 1 times [2023-11-24 23:21:06,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:06,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069571011] [2023-11-24 23:21:06,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:06,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:21:07,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:07,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069571011] [2023-11-24 23:21:07,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069571011] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:21:07,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653029934] [2023-11-24 23:21:07,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:07,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:21:07,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:21:07,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:21:07,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:21:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:08,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:21:08,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:21:08,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:21:08,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:21:08,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653029934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:21:08,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:21:08,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-24 23:21:08,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376844714] [2023-11-24 23:21:08,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:21:08,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:21:08,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:21:08,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:21:08,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:21:08,129 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) [2023-11-24 23:21:11,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:21:12,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:21:12,737 INFO L93 Difference]: Finished difference Result 957 states and 1278 transitions. [2023-11-24 23:21:12,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:21:12,738 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 [2023-11-24 23:21:12,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:21:12,747 INFO L225 Difference]: With dead ends: 957 [2023-11-24 23:21:12,747 INFO L226 Difference]: Without dead ends: 956 [2023-11-24 23:21:12,748 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 [2023-11-24 23:21:12,750 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 3 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:21:12,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2180 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-24 23:21:12,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2023-11-24 23:21:12,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 956. [2023-11-24 23:21:12,793 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) [2023-11-24 23:21:12,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1277 transitions. [2023-11-24 23:21:12,804 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1277 transitions. Word has length 6 [2023-11-24 23:21:12,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:21:12,804 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1277 transitions. [2023-11-24 23:21:12,805 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) [2023-11-24 23:21:12,805 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1277 transitions. [2023-11-24 23:21:12,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:21:12,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:12,806 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-24 23:21:12,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:21:13,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-24 23:21:13,015 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)] === [2023-11-24 23:21:13,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:13,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1656980381, now seen corresponding path program 1 times [2023-11-24 23:21:13,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:13,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895474811] [2023-11-24 23:21:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:13,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:13,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:21:13,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:13,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895474811] [2023-11-24 23:21:13,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895474811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:21:13,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:21:13,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:21:13,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748847232] [2023-11-24 23:21:13,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:21:13,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:21:13,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:21:13,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:21:13,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:21:13,303 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) [2023-11-24 23:21:16,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:21:16,857 INFO L93 Difference]: Finished difference Result 956 states and 1277 transitions. [2023-11-24 23:21:16,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:21:16,858 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 [2023-11-24 23:21:16,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:21:16,865 INFO L225 Difference]: With dead ends: 956 [2023-11-24 23:21:16,866 INFO L226 Difference]: Without dead ends: 955 [2023-11-24 23:21:16,866 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 [2023-11-24 23:21:16,868 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 0 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:21:16,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2180 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-24 23:21:16,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2023-11-24 23:21:16,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 953. [2023-11-24 23:21:16,911 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) [2023-11-24 23:21:16,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1274 transitions. [2023-11-24 23:21:16,921 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1274 transitions. Word has length 7 [2023-11-24 23:21:16,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:21:16,921 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1274 transitions. [2023-11-24 23:21:16,921 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) [2023-11-24 23:21:16,922 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1274 transitions. [2023-11-24 23:21:16,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:21:16,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:16,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:21:16,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:21:16,928 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)] === [2023-11-24 23:21:16,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:16,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1180402576, now seen corresponding path program 1 times [2023-11-24 23:21:16,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:16,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833564280] [2023-11-24 23:21:16,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:16,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:17,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:21:17,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:17,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833564280] [2023-11-24 23:21:17,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833564280] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:21:17,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919486169] [2023-11-24 23:21:17,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:17,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:21:17,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:21:17,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:21:17,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:21:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:18,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:21:18,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:21:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:21:18,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:21:18,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919486169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:21:18,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:21:18,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:21:18,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39869945] [2023-11-24 23:21:18,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:21:18,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:21:18,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:21:18,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:21:18,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:21:18,129 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) [2023-11-24 23:21:20,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:21:20,981 INFO L93 Difference]: Finished difference Result 953 states and 1274 transitions. [2023-11-24 23:21:20,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:21:20,982 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 [2023-11-24 23:21:20,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:21:20,988 INFO L225 Difference]: With dead ends: 953 [2023-11-24 23:21:20,988 INFO L226 Difference]: Without dead ends: 951 [2023-11-24 23:21:20,989 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 [2023-11-24 23:21:20,990 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 383 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 2.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:21:20,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1819 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-24 23:21:20,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2023-11-24 23:21:21,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 951. [2023-11-24 23:21:21,022 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) [2023-11-24 23:21:21,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1272 transitions. [2023-11-24 23:21:21,030 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1272 transitions. Word has length 9 [2023-11-24 23:21:21,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:21:21,031 INFO L495 AbstractCegarLoop]: Abstraction has 951 states and 1272 transitions. [2023-11-24 23:21:21,031 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) [2023-11-24 23:21:21,031 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1272 transitions. [2023-11-24 23:21:21,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:21:21,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:21,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:21:21,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-24 23:21:21,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:21:21,240 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)] === [2023-11-24 23:21:21,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:21,241 INFO L85 PathProgramCache]: Analyzing trace with hash -2062222944, now seen corresponding path program 1 times [2023-11-24 23:21:21,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:21,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821454051] [2023-11-24 23:21:21,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:21,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:21,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:21:21,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:21,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821454051] [2023-11-24 23:21:21,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821454051] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:21:21,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565703949] [2023-11-24 23:21:21,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:21,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:21:21,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:21:21,512 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:21:21,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e800b2-b01a-4668-8aa1-9c4686399c94/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:21:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:22,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:21:22,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:21:22,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:21:22,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:21:22,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:21:22,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565703949] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:21:22,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [329964300] [2023-11-24 23:21:22,288 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-24 23:21:22,288 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:21:22,293 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:21:22,298 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:21:22,299 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs