/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 11:03:00,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 11:03:00,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 11:03:00,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 11:03:00,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 11:03:00,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 11:03:00,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 11:03:00,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 11:03:00,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 11:03:00,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 11:03:00,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 11:03:00,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 11:03:00,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 11:03:00,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 11:03:00,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 11:03:00,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 11:03:00,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 11:03:00,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 11:03:00,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 11:03:00,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 11:03:00,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 11:03:00,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 11:03:00,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 11:03:00,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 11:03:00,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 11:03:00,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 11:03:00,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 11:03:00,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 11:03:00,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 11:03:00,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 11:03:00,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 11:03:00,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 11:03:00,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 11:03:00,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 11:03:00,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 11:03:00,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 11:03:00,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 11:03:00,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 11:03:00,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 11:03:00,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 11:03:00,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 11:03:00,244 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 11:03:00,268 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 11:03:00,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 11:03:00,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 11:03:00,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 11:03:00,270 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 11:03:00,270 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 11:03:00,270 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 11:03:00,270 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 11:03:00,270 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 11:03:00,270 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 11:03:00,271 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 11:03:00,271 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 11:03:00,271 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 11:03:00,271 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 11:03:00,271 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 11:03:00,271 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 11:03:00,271 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 11:03:00,271 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 11:03:00,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 11:03:00,272 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 11:03:00,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 11:03:00,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 11:03:00,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 11:03:00,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 11:03:00,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 11:03:00,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 11:03:00,273 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 11:03:00,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 11:03:00,273 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 11:03:00,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 11:03:00,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 11:03:00,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 11:03:00,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 11:03:00,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 11:03:00,273 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 11:03:00,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 11:03:00,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 11:03:00,274 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 11:03:00,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 11:03:00,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 11:03:00,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 11:03:00,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 11:03:00,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 11:03:00,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 11:03:00,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 11:03:00,508 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 11:03:00,508 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 11:03:00,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2023-04-01 11:03:01,483 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 11:03:01,623 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 11:03:01,624 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2023-04-01 11:03:01,632 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cf916d6e/07c4c3f67adf46db822c81fe630cb07b/FLAGf42c025dc [2023-04-01 11:03:01,642 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cf916d6e/07c4c3f67adf46db822c81fe630cb07b [2023-04-01 11:03:01,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 11:03:01,645 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 11:03:01,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 11:03:01,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 11:03:01,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 11:03:01,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:03:01" (1/1) ... [2023-04-01 11:03:01,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1a755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:03:01, skipping insertion in model container [2023-04-01 11:03:01,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:03:01" (1/1) ... [2023-04-01 11:03:01,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 11:03:01,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 11:03:01,774 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[882,895] [2023-04-01 11:03:01,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 11:03:01,808 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 11:03:01,815 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[882,895] [2023-04-01 11:03:01,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 11:03:01,832 WARN L667 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-04-01 11:03:01,836 INFO L208 MainTranslator]: Completed translation [2023-04-01 11:03:01,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:03:01 WrapperNode [2023-04-01 11:03:01,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 11:03:01,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 11:03:01,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 11:03:01,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 11:03:01,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:03:01" (1/1) ... [2023-04-01 11:03:01,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:03:01" (1/1) ... [2023-04-01 11:03:01,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:03:01" (1/1) ... [2023-04-01 11:03:01,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:03:01" (1/1) ... [2023-04-01 11:03:01,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:03:01" (1/1) ... [2023-04-01 11:03:01,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:03:01" (1/1) ... [2023-04-01 11:03:01,862 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:03:01" (1/1) ... [2023-04-01 11:03:01,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:03:01" (1/1) ... [2023-04-01 11:03:01,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 11:03:01,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 11:03:01,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 11:03:01,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 11:03:01,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:03:01" (1/1) ... [2023-04-01 11:03:01,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 11:03:01,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:03:01,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 11:03:01,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 11:03:01,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 11:03:01,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 11:03:01,915 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 11:03:01,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 11:03:01,915 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2023-04-01 11:03:01,915 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2023-04-01 11:03:01,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 11:03:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 11:03:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 11:03:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 11:03:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 11:03:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 11:03:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 11:03:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 11:03:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 11:03:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2023-04-01 11:03:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-04-01 11:03:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-04-01 11:03:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-04-01 11:03:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2023-04-01 11:03:01,916 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2023-04-01 11:03:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2023-04-01 11:03:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-04-01 11:03:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2023-04-01 11:03:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2023-04-01 11:03:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2023-04-01 11:03:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2023-04-01 11:03:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2023-04-01 11:03:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2023-04-01 11:03:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2023-04-01 11:03:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2023-04-01 11:03:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2023-04-01 11:03:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2023-04-01 11:03:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2023-04-01 11:03:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2023-04-01 11:03:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2023-04-01 11:03:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2023-04-01 11:03:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2023-04-01 11:03:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2023-04-01 11:03:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2023-04-01 11:03:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2023-04-01 11:03:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 11:03:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 11:03:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 11:03:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 11:03:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 11:03:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 11:03:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 11:03:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 11:03:01,998 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 11:03:02,000 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 11:03:02,215 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 11:03:02,272 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 11:03:02,272 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-04-01 11:03:02,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:03:02 BoogieIcfgContainer [2023-04-01 11:03:02,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 11:03:02,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 11:03:02,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 11:03:02,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 11:03:02,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:03:01" (1/3) ... [2023-04-01 11:03:02,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be60969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:03:02, skipping insertion in model container [2023-04-01 11:03:02,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:03:01" (2/3) ... [2023-04-01 11:03:02,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be60969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:03:02, skipping insertion in model container [2023-04-01 11:03:02,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:03:02" (3/3) ... [2023-04-01 11:03:02,279 INFO L112 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2023-04-01 11:03:02,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 11:03:02,291 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 11:03:02,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 11:03:02,329 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=LoopsAndPotentialCycles, 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;@63e086df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 11:03:02,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 11:03:02,333 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 28 states have internal predecessors, (39), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 11:03:02,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-01 11:03:02,338 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:03:02,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:03:02,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:03:02,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:03:02,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1497738951, now seen corresponding path program 1 times [2023-04-01 11:03:02,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:03:02,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707343076] [2023-04-01 11:03:02,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:03:02,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:03:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:03:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:03:02,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:03:02,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707343076] [2023-04-01 11:03:02,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707343076] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:03:02,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 11:03:02,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 11:03:02,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068634105] [2023-04-01 11:03:02,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:03:02,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 11:03:02,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:03:02,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 11:03:02,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 11:03:02,596 INFO L87 Difference]: Start difference. First operand has 39 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 28 states have internal predecessors, (39), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 11:03:02,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:03:02,661 INFO L93 Difference]: Finished difference Result 73 states and 95 transitions. [2023-04-01 11:03:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 11:03:02,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2023-04-01 11:03:02,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:03:02,667 INFO L225 Difference]: With dead ends: 73 [2023-04-01 11:03:02,668 INFO L226 Difference]: Without dead ends: 33 [2023-04-01 11:03:02,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 11:03:02,674 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 11:03:02,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 11:03:02,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-04-01 11:03:02,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-04-01 11:03:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 11:03:02,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2023-04-01 11:03:02,703 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2023-04-01 11:03:02,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:03:02,703 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2023-04-01 11:03:02,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 11:03:02,704 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2023-04-01 11:03:02,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-04-01 11:03:02,704 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:03:02,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:03:02,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 11:03:02,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:03:02,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:03:02,707 INFO L85 PathProgramCache]: Analyzing trace with hash -830977392, now seen corresponding path program 1 times [2023-04-01 11:03:02,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:03:02,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034822324] [2023-04-01 11:03:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:03:02,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:03:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:03:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:03:02,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:03:02,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034822324] [2023-04-01 11:03:02,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034822324] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 11:03:02,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702975991] [2023-04-01 11:03:02,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:03:02,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:03:02,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:03:02,842 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 11:03:02,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 11:03:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:03:02,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 11:03:02,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:03:02,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:03:02,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 11:03:03,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:03:03,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702975991] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 11:03:03,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2058572503] [2023-04-01 11:03:03,035 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2023-04-01 11:03:03,035 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 11:03:03,037 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 11:03:03,041 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 11:03:03,042 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 11:03:03,162 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 43 for LOIs [2023-04-01 11:03:03,363 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 11:03:03,373 INFO L197 IcfgInterpreter]: Interpreting procedure parse_expression_list with input of size 68 for LOIs [2023-04-01 11:03:03,658 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 11:03:04,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2058572503] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:03:04,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-01 11:03:04,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 19 [2023-04-01 11:03:04,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480781671] [2023-04-01 11:03:04,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:03:04,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 11:03:04,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:03:04,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 11:03:04,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-04-01 11:03:04,732 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 14 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 11:03:06,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:03:06,422 INFO L93 Difference]: Finished difference Result 89 states and 102 transitions. [2023-04-01 11:03:06,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 11:03:06,423 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2023-04-01 11:03:06,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:03:06,424 INFO L225 Difference]: With dead ends: 89 [2023-04-01 11:03:06,424 INFO L226 Difference]: Without dead ends: 59 [2023-04-01 11:03:06,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2023-04-01 11:03:06,426 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 101 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 11:03:06,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 5 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 11:03:06,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-04-01 11:03:06,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2023-04-01 11:03:06,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 11:03:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2023-04-01 11:03:06,433 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 27 [2023-04-01 11:03:06,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:03:06,434 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2023-04-01 11:03:06,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 11:03:06,434 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2023-04-01 11:03:06,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-04-01 11:03:06,434 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:03:06,434 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:03:06,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 11:03:06,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:03:06,635 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:03:06,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:03:06,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1156236158, now seen corresponding path program 1 times [2023-04-01 11:03:06,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:03:06,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633812594] [2023-04-01 11:03:06,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:03:06,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:03:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:03:06,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 11:03:06,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:03:06,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633812594] [2023-04-01 11:03:06,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633812594] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 11:03:06,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904789529] [2023-04-01 11:03:06,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:03:06,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:03:06,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:03:06,745 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 11:03:06,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 11:03:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:03:06,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 11:03:06,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:03:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 11:03:06,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 11:03:06,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 11:03:06,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904789529] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 11:03:06,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1238783721] [2023-04-01 11:03:06,840 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-04-01 11:03:06,841 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 11:03:06,841 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 11:03:06,841 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 11:03:06,841 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 11:03:06,873 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 43 for LOIs [2023-04-01 11:03:06,955 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 11:03:06,957 INFO L197 IcfgInterpreter]: Interpreting procedure parse_expression_list with input of size 68 for LOIs [2023-04-01 11:03:07,609 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 72 for LOIs [2023-04-01 11:03:07,638 INFO L197 IcfgInterpreter]: Interpreting procedure r_strncpy with input of size 51 for LOIs [2023-04-01 11:03:07,649 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 11:03:09,671 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '752#(and (exists ((|v_parse_expression_list_#in~str.base_BEFORE_CALL_3| Int) (v_parse_expression_list_~start~0_BEFORE_CALL_3 Int) (v_parse_expression_list_~i~0_BEFORE_CALL_3 Int) (|v_parse_expression_list_#t~mem4_BEFORE_CALL_3| Int)) (and (or (= v_parse_expression_list_~start~0_BEFORE_CALL_3 1) (= v_parse_expression_list_~start~0_BEFORE_CALL_3 0)) (not (= 32 v_parse_expression_list_~start~0_BEFORE_CALL_3)) (not (= 2 v_parse_expression_list_~start~0_BEFORE_CALL_3)) (not (= v_parse_expression_list_~start~0_BEFORE_CALL_3 |v_parse_expression_list_#in~str.base_BEFORE_CALL_3|)) (not (= 9 v_parse_expression_list_~start~0_BEFORE_CALL_3)) (not (= (select (select |#memory_int| |v_parse_expression_list_#in~str.base_BEFORE_CALL_3|) 0) 9)) (not (= 0 |v_parse_expression_list_#in~str.base_BEFORE_CALL_3|)) (not (= (select (select |#memory_int| |v_parse_expression_list_#in~str.base_BEFORE_CALL_3|) 0) 32)) (not (= 1 |v_parse_expression_list_#in~str.base_BEFORE_CALL_3|)) (or (= (select (select |#memory_int| |v_parse_expression_list_#in~str.base_BEFORE_CALL_3|) 0) |v_parse_expression_list_#t~mem4_BEFORE_CALL_3|) (= (select (select |#memory_int| |v_parse_expression_list_#in~str.base_BEFORE_CALL_3|) v_parse_expression_list_~i~0_BEFORE_CALL_3) |v_parse_expression_list_#t~mem4_BEFORE_CALL_3|)) (not (= |#StackHeapBarrier| |v_parse_expression_list_#in~str.base_BEFORE_CALL_3|)) (not (= 2 |v_parse_expression_list_#in~str.base_BEFORE_CALL_3|)) (not (= 34 v_parse_expression_list_~start~0_BEFORE_CALL_3)))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (not (= |#StackHeapBarrier| 0)) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-01 11:03:09,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 11:03:09,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 11:03:09,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-04-01 11:03:09,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655711236] [2023-04-01 11:03:09,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 11:03:09,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 11:03:09,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:03:09,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 11:03:09,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=960, Unknown=1, NotChecked=0, Total=1056 [2023-04-01 11:03:09,673 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 11:03:09,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:03:09,698 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2023-04-01 11:03:09,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 11:03:09,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-04-01 11:03:09,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:03:09,699 INFO L225 Difference]: With dead ends: 66 [2023-04-01 11:03:09,699 INFO L226 Difference]: Without dead ends: 38 [2023-04-01 11:03:09,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=95, Invalid=960, Unknown=1, NotChecked=0, Total=1056 [2023-04-01 11:03:09,701 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 11:03:09,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 11:03:09,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-04-01 11:03:09,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-04-01 11:03:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 11:03:09,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2023-04-01 11:03:09,707 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 31 [2023-04-01 11:03:09,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:03:09,707 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2023-04-01 11:03:09,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 11:03:09,707 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2023-04-01 11:03:09,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-04-01 11:03:09,708 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:03:09,708 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:03:09,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 11:03:09,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-04-01 11:03:09,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:03:09,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:03:09,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1690846395, now seen corresponding path program 2 times [2023-04-01 11:03:09,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:03:09,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112949098] [2023-04-01 11:03:09,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:03:09,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:03:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:03:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 11:03:10,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:03:10,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112949098] [2023-04-01 11:03:10,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112949098] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 11:03:10,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069344254] [2023-04-01 11:03:10,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 11:03:10,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:03:10,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:03:10,033 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 11:03:10,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 11:03:10,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-04-01 11:03:10,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 11:03:10,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-01 11:03:10,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:03:10,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2023-04-01 11:03:10,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2023-04-01 11:03:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 11:03:10,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 11:03:10,428 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-04-01 11:03:10,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 44 [2023-04-01 11:03:10,484 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 11:03:10,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069344254] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 11:03:10,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [766496951] [2023-04-01 11:03:10,486 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-04-01 11:03:10,486 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 11:03:10,487 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 11:03:10,487 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 11:03:10,487 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 11:03:10,511 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 43 for LOIs [2023-04-01 11:03:10,578 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 11:03:10,581 INFO L197 IcfgInterpreter]: Interpreting procedure parse_expression_list with input of size 68 for LOIs [2023-04-01 11:03:11,119 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 72 for LOIs [2023-04-01 11:03:11,151 INFO L197 IcfgInterpreter]: Interpreting procedure r_strncpy with input of size 51 for LOIs [2023-04-01 11:03:11,158 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 11:03:13,372 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1152#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (not (= |#StackHeapBarrier| 0)) (= |#NULL.offset| 0) (exists ((v_parse_expression_list_~i~0_BEFORE_CALL_7 Int) (|v_parse_expression_list_#t~mem4_BEFORE_CALL_7| Int) (v_parse_expression_list_~start~0_BEFORE_CALL_10 Int) (|v_parse_expression_list_#in~str.base_BEFORE_CALL_7| Int)) (and (or (= (select (select |#memory_int| |v_parse_expression_list_#in~str.base_BEFORE_CALL_7|) 0) |v_parse_expression_list_#t~mem4_BEFORE_CALL_7|) (= (select (select |#memory_int| |v_parse_expression_list_#in~str.base_BEFORE_CALL_7|) v_parse_expression_list_~i~0_BEFORE_CALL_7) |v_parse_expression_list_#t~mem4_BEFORE_CALL_7|)) (not (= 32 v_parse_expression_list_~start~0_BEFORE_CALL_10)) (not (= 2 |v_parse_expression_list_#in~str.base_BEFORE_CALL_7|)) (not (= 0 |v_parse_expression_list_#in~str.base_BEFORE_CALL_7|)) (not (= (select (select |#memory_int| |v_parse_expression_list_#in~str.base_BEFORE_CALL_7|) 0) 9)) (not (= (select (select |#memory_int| |v_parse_expression_list_#in~str.base_BEFORE_CALL_7|) 0) 32)) (not (= |v_parse_expression_list_#in~str.base_BEFORE_CALL_7| v_parse_expression_list_~start~0_BEFORE_CALL_10)) (not (= 1 |v_parse_expression_list_#in~str.base_BEFORE_CALL_7|)) (not (= 9 v_parse_expression_list_~start~0_BEFORE_CALL_10)) (or (= 0 v_parse_expression_list_~start~0_BEFORE_CALL_10) (= 1 v_parse_expression_list_~start~0_BEFORE_CALL_10)) (not (= 34 v_parse_expression_list_~start~0_BEFORE_CALL_10)) (not (= |#StackHeapBarrier| |v_parse_expression_list_#in~str.base_BEFORE_CALL_7|)) (not (= 2 v_parse_expression_list_~start~0_BEFORE_CALL_10)))) (= |#NULL.base| 0))' at error location [2023-04-01 11:03:13,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 11:03:13,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 11:03:13,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21 [2023-04-01 11:03:13,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494501295] [2023-04-01 11:03:13,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 11:03:13,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-01 11:03:13,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:03:13,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-01 11:03:13,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1988, Unknown=1, NotChecked=0, Total=2162 [2023-04-01 11:03:13,375 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 19 states have internal predecessors, (65), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 11:03:14,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:03:14,048 INFO L93 Difference]: Finished difference Result 162 states and 199 transitions. [2023-04-01 11:03:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-04-01 11:03:14,049 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 19 states have internal predecessors, (65), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2023-04-01 11:03:14,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:03:14,051 INFO L225 Difference]: With dead ends: 162 [2023-04-01 11:03:14,051 INFO L226 Difference]: Without dead ends: 134 [2023-04-01 11:03:14,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=355, Invalid=3304, Unknown=1, NotChecked=0, Total=3660 [2023-04-01 11:03:14,053 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 86 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 11:03:14,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 329 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 11:03:14,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-04-01 11:03:14,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 61. [2023-04-01 11:03:14,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.183673469387755) internal successors, (58), 50 states have internal predecessors, (58), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 11:03:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2023-04-01 11:03:14,081 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 34 [2023-04-01 11:03:14,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:03:14,081 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2023-04-01 11:03:14,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 19 states have internal predecessors, (65), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 11:03:14,081 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2023-04-01 11:03:14,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-04-01 11:03:14,086 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:03:14,086 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:03:14,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 11:03:14,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:03:14,295 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:03:14,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:03:14,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1613477428, now seen corresponding path program 3 times [2023-04-01 11:03:14,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:03:14,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863133932] [2023-04-01 11:03:14,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:03:14,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:03:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:03:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 11:03:14,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:03:14,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863133932] [2023-04-01 11:03:14,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863133932] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 11:03:14,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67368316] [2023-04-01 11:03:14,427 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-01 11:03:14,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:03:14,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:03:14,428 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 11:03:14,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 11:03:14,500 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-01 11:03:14,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 11:03:14,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 11:03:14,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:03:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 11:03:14,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 11:03:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 11:03:14,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67368316] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 11:03:14,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2122783500] [2023-04-01 11:03:14,547 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-04-01 11:03:14,547 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 11:03:14,547 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 11:03:14,547 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 11:03:14,547 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 11:03:14,564 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 43 for LOIs [2023-04-01 11:03:14,620 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 11:03:14,622 INFO L197 IcfgInterpreter]: Interpreting procedure parse_expression_list with input of size 68 for LOIs [2023-04-01 11:03:15,145 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 72 for LOIs [2023-04-01 11:03:15,176 INFO L197 IcfgInterpreter]: Interpreting procedure r_strncpy with input of size 51 for LOIs [2023-04-01 11:03:15,183 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 11:03:17,106 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1759#(and (exists ((v_parse_expression_list_~i~0_BEFORE_CALL_11 Int) (v_parse_expression_list_~start~0_BEFORE_CALL_14 Int) (|v_parse_expression_list_#in~str.base_BEFORE_CALL_11| Int) (|v_parse_expression_list_#t~mem4_BEFORE_CALL_11| Int)) (and (not (= |v_parse_expression_list_#in~str.base_BEFORE_CALL_11| 1)) (or (= 1 v_parse_expression_list_~start~0_BEFORE_CALL_14) (= 0 v_parse_expression_list_~start~0_BEFORE_CALL_14)) (not (= |v_parse_expression_list_#in~str.base_BEFORE_CALL_11| v_parse_expression_list_~start~0_BEFORE_CALL_14)) (not (= 9 v_parse_expression_list_~start~0_BEFORE_CALL_14)) (not (= (select (select |#memory_int| |v_parse_expression_list_#in~str.base_BEFORE_CALL_11|) 0) 9)) (not (= (select (select |#memory_int| |v_parse_expression_list_#in~str.base_BEFORE_CALL_11|) 0) 32)) (not (= 32 v_parse_expression_list_~start~0_BEFORE_CALL_14)) (or (= (select (select |#memory_int| |v_parse_expression_list_#in~str.base_BEFORE_CALL_11|) 0) |v_parse_expression_list_#t~mem4_BEFORE_CALL_11|) (= |v_parse_expression_list_#t~mem4_BEFORE_CALL_11| (select (select |#memory_int| |v_parse_expression_list_#in~str.base_BEFORE_CALL_11|) v_parse_expression_list_~i~0_BEFORE_CALL_11))) (not (= |v_parse_expression_list_#in~str.base_BEFORE_CALL_11| 0)) (not (= |v_parse_expression_list_#in~str.base_BEFORE_CALL_11| |#StackHeapBarrier|)) (not (= 34 v_parse_expression_list_~start~0_BEFORE_CALL_14)) (not (= |v_parse_expression_list_#in~str.base_BEFORE_CALL_11| 2)) (not (= 2 v_parse_expression_list_~start~0_BEFORE_CALL_14)))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (not (= |#StackHeapBarrier| 0)) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-01 11:03:17,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 11:03:17,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 11:03:17,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2023-04-01 11:03:17,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692792255] [2023-04-01 11:03:17,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 11:03:17,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 11:03:17,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:03:17,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 11:03:17,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1140, Unknown=1, NotChecked=0, Total=1260 [2023-04-01 11:03:17,111 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 11:03:17,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:03:17,151 INFO L93 Difference]: Finished difference Result 113 states and 132 transitions. [2023-04-01 11:03:17,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 11:03:17,151 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2023-04-01 11:03:17,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:03:17,153 INFO L225 Difference]: With dead ends: 113 [2023-04-01 11:03:17,153 INFO L226 Difference]: Without dead ends: 63 [2023-04-01 11:03:17,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 85 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=119, Invalid=1140, Unknown=1, NotChecked=0, Total=1260 [2023-04-01 11:03:17,165 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 11:03:17,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 11:03:17,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-04-01 11:03:17,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-04-01 11:03:17,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 52 states have internal predecessors, (60), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 11:03:17,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2023-04-01 11:03:17,176 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 39 [2023-04-01 11:03:17,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:03:17,177 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2023-04-01 11:03:17,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 11:03:17,177 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2023-04-01 11:03:17,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-04-01 11:03:17,177 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:03:17,178 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:03:17,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 11:03:17,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:03:17,382 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:03:17,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:03:17,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1322007188, now seen corresponding path program 4 times [2023-04-01 11:03:17,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:03:17,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645625066] [2023-04-01 11:03:17,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:03:17,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:03:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 11:03:17,422 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 11:03:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 11:03:17,463 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 11:03:17,463 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 11:03:17,464 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 11:03:17,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 11:03:17,467 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-04-01 11:03:17,469 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 11:03:17,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 11:03:17 BoogieIcfgContainer [2023-04-01 11:03:17,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 11:03:17,505 INFO L158 Benchmark]: Toolchain (without parser) took 15860.50ms. Allocated memory was 211.8MB in the beginning and 675.3MB in the end (delta: 463.5MB). Free memory was 174.0MB in the beginning and 604.9MB in the end (delta: -430.9MB). Peak memory consumption was 34.0MB. Max. memory is 8.0GB. [2023-04-01 11:03:17,505 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 211.8MB. Free memory is still 181.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 11:03:17,506 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.55ms. Allocated memory is still 211.8MB. Free memory was 174.0MB in the beginning and 162.3MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-01 11:03:17,506 INFO L158 Benchmark]: Boogie Preprocessor took 27.16ms. Allocated memory is still 211.8MB. Free memory was 162.3MB in the beginning and 160.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-01 11:03:17,506 INFO L158 Benchmark]: RCFGBuilder took 408.65ms. Allocated memory is still 211.8MB. Free memory was 160.2MB in the beginning and 137.5MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-04-01 11:03:17,506 INFO L158 Benchmark]: TraceAbstraction took 15229.78ms. Allocated memory was 211.8MB in the beginning and 675.3MB in the end (delta: 463.5MB). Free memory was 136.8MB in the beginning and 604.9MB in the end (delta: -468.1MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 11:03:17,507 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 211.8MB. Free memory is still 181.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 191.55ms. Allocated memory is still 211.8MB. Free memory was 174.0MB in the beginning and 162.3MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.16ms. Allocated memory is still 211.8MB. Free memory was 162.3MB in the beginning and 160.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 408.65ms. Allocated memory is still 211.8MB. Free memory was 160.2MB in the beginning and 137.5MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 15229.78ms. Allocated memory was 211.8MB in the beginning and 675.3MB in the end (delta: 463.5MB). Free memory was 136.8MB in the beginning and 604.9MB in the end (delta: -468.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L86] char A [2 + 2 + 4 +1]; [L87] int i = 0; VAL [A={10:0}, i=0] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=1] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=2] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=3] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=4] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=5] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=6] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=7] [L87] COND FALSE !(i<2 + 2 + 4 -1) [L90] A[2 + 2 + 4] = 0 VAL [A={10:0}, i=7] [L91] CALL parse_expression_list (A) VAL [str={10:0}] [L60] int start=0, i=-1, j=-1; [L61] char str2[2]; VAL [i=-1, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L62] COND FALSE !(!str) VAL [i=-1, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L64] i++ [L65] str[i] [L66] case 0: VAL [i=0, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=-8] [L81] EXPR str[i] VAL [i=0, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=-8] [L81] COND TRUE str[i] != 0 [L64] i++ [L65] str[i] [L66] case 0: VAL [i=1, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=-2] [L81] EXPR str[i] VAL [i=1, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=-2] [L81] COND TRUE str[i] != 0 [L64] i++ [L65] str[i] [L66] case 0: VAL [i=2, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=0] [L67] EXPR str[start] [L67] (str[start] == ' ') || (str[start] == '\t') [L67] EXPR str[start] [L67] (str[start] == ' ') || (str[start] == '\t') VAL [(str[start] == ' ') || (str[start] == '\t')=0, i=2, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=0, str[start]=-8, str[start]=-8] [L67] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L68] EXPR str[start] [L68] COND FALSE !(str[start] == '"') [L69] j = i-1 VAL [i=2, j=1, start++=53, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=0] [L70] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L70] EXPR str[j] [L70] EXPR (str[j] == ' ') || (str[j] == '\t') [L70] EXPR str[j] [L70] EXPR (str[j] == ' ') || (str[j] == '\t') [L70] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=0, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start++=53, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=0, str[j]=-2, str[j]=-2] [L70] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L71] (0 < j) && (str[j] == '"') [L71] EXPR str[j] [L71] (0 < j) && (str[j] == '"') [L71] COND FALSE !((0 < j) && (str[j] == '"')) [L72] COND TRUE start<=j VAL [i=2, j--=50, j=1, start++=53, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=0] [L73] CALL r_strncpy(str2, str+start, j-start+1) VAL [\old(n)=2, dest={7:0}, src={10:0}] [L42] return strncpy(dest,src,n); [L73] RET r_strncpy(str2, str+start, j-start+1) VAL [i=2, j--=50, j=1, r_strncpy(str2, str+start, j-start+1)={52:54}, start++=53, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=0] [L74] CALL __VERIFIER_assert(j - start + 1 < 2) VAL [\old(cond)=0] [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.2s, OverallIterations: 6, TraceHistogramMax: 7, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 189 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 187 mSDsluCounter, 528 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 409 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 954 IncrementalHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 119 mSDtfsCounter, 954 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 440 GetRequests, 281 SyntacticMatches, 6 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1859 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=5, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 97 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 327 NumberOfCodeBlocks, 325 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 404 ConstructedInterpolants, 0 QuantifiedInterpolants, 794 SizeOfPredicates, 12 NumberOfNonLiveVariables, 705 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 52/117 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.6s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 19, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 18, TOOLS_POST_TIME: 0.4s, TOOLS_POST_CALL_APPLICATIONS: 5, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 2, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 25, TOOLS_QUANTIFIERELIM_TIME: 0.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 54, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 19, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.1s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 2, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 187, DAG_COMPRESSION_RETAINED_NODES: 68, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-04-01 11:03:17,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...