/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 OctagonDomain -i ../sv-benchmarks/c/loop-invgen/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 22:07:49,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 22:07:49,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 22:07:49,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 22:07:49,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 22:07:49,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 22:07:49,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 22:07:49,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 22:07:49,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 22:07:49,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 22:07:49,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 22:07:49,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 22:07:49,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 22:07:49,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 22:07:49,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 22:07:49,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 22:07:49,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 22:07:49,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 22:07:49,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 22:07:49,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 22:07:49,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 22:07:49,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 22:07:49,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 22:07:49,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 22:07:49,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 22:07:49,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 22:07:49,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 22:07:49,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 22:07:49,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 22:07:49,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 22:07:49,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 22:07:49,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 22:07:49,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 22:07:49,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 22:07:49,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 22:07:49,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 22:07:49,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 22:07:49,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 22:07:49,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 22:07:49,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 22:07:49,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 22:07:49,950 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 [2023-04-02 22:07:49,977 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 22:07:49,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 22:07:49,977 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 22:07:49,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 22:07:49,978 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 22:07:49,978 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 22:07:49,979 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 22:07:49,979 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 22:07:49,979 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 22:07:49,979 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 22:07:49,980 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 22:07:49,980 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 22:07:49,980 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 22:07:49,980 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 22:07:49,980 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 22:07:49,980 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 22:07:49,980 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 22:07:49,981 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 22:07:49,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 22:07:49,981 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 22:07:49,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 22:07:49,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 22:07:49,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 22:07:49,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 22:07:49,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 22:07:49,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 22:07:49,982 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 22:07:49,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 22:07:49,982 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 22:07:49,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 22:07:49,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 22:07:49,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 22:07:49,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:07:49,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 22:07:49,983 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 22:07:49,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 22:07:49,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 22:07:49,984 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 22:07:49,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 22:07:49,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 22:07:49,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 22:07:49,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 22:07:50,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 22:07:50,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 22:07:50,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 22:07:50,227 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 22:07:50,227 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 22:07:50,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2023-04-02 22:07:51,298 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 22:07:51,462 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 22:07:51,463 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2023-04-02 22:07:51,467 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71b3943f3/0820d0289f5f49089dcd92aa78b2285a/FLAGd523904a1 [2023-04-02 22:07:51,480 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71b3943f3/0820d0289f5f49089dcd92aa78b2285a [2023-04-02 22:07:51,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 22:07:51,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 22:07:51,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 22:07:51,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 22:07:51,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 22:07:51,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:07:51" (1/1) ... [2023-04-02 22:07:51,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d1be50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:07:51, skipping insertion in model container [2023-04-02 22:07:51,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:07:51" (1/1) ... [2023-04-02 22:07:51,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 22:07:51,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 22:07:51,637 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/loop-invgen/NetBSD_loop.i[893,906] [2023-04-02 22:07:51,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:07:51,655 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 22:07:51,668 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/loop-invgen/NetBSD_loop.i[893,906] [2023-04-02 22:07:51,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:07:51,680 INFO L208 MainTranslator]: Completed translation [2023-04-02 22:07:51,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:07:51 WrapperNode [2023-04-02 22:07:51,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 22:07:51,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 22:07:51,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 22:07:51,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 22:07:51,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:07:51" (1/1) ... [2023-04-02 22:07:51,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:07:51" (1/1) ... [2023-04-02 22:07:51,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:07:51" (1/1) ... [2023-04-02 22:07:51,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:07:51" (1/1) ... [2023-04-02 22:07:51,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:07:51" (1/1) ... [2023-04-02 22:07:51,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:07:51" (1/1) ... [2023-04-02 22:07:51,701 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:07:51" (1/1) ... [2023-04-02 22:07:51,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:07:51" (1/1) ... [2023-04-02 22:07:51,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 22:07:51,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 22:07:51,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 22:07:51,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 22:07:51,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:07:51" (1/1) ... [2023-04-02 22:07:51,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:07:51,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:07:51,733 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) [2023-04-02 22:07:51,735 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 [2023-04-02 22:07:51,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 22:07:51,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 22:07:51,765 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 22:07:51,765 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 22:07:51,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 22:07:51,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 22:07:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 22:07:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 22:07:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 22:07:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 22:07:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 22:07:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 22:07:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 22:07:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 22:07:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 22:07:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 22:07:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 22:07:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 22:07:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 22:07:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 22:07:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 22:07:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 22:07:51,826 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 22:07:51,828 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 22:07:51,991 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 22:07:52,027 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 22:07:52,027 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 22:07:52,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:07:52 BoogieIcfgContainer [2023-04-02 22:07:52,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 22:07:52,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 22:07:52,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 22:07:52,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 22:07:52,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 10:07:51" (1/3) ... [2023-04-02 22:07:52,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3461e23f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:07:52, skipping insertion in model container [2023-04-02 22:07:52,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:07:51" (2/3) ... [2023-04-02 22:07:52,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3461e23f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:07:52, skipping insertion in model container [2023-04-02 22:07:52,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:07:52" (3/3) ... [2023-04-02 22:07:52,036 INFO L112 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2023-04-02 22:07:52,050 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 22:07:52,051 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 22:07:52,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 22:07:52,100 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;@262ae5ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 22:07:52,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 22:07:52,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 22:07:52,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-04-02 22:07:52,114 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:07:52,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:07:52,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:07:52,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:07:52,121 INFO L85 PathProgramCache]: Analyzing trace with hash -281320485, now seen corresponding path program 1 times [2023-04-02 22:07:52,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:07:52,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613175759] [2023-04-02 22:07:52,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:07:52,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:07:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:07:52,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:07:52,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:07:52,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613175759] [2023-04-02 22:07:52,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613175759] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:07:52,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:07:52,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 22:07:52,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166438404] [2023-04-02 22:07:52,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:07:52,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 22:07:52,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:07:52,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 22:07:52,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 22:07:52,424 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:07:52,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:07:52,498 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2023-04-02 22:07:52,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 22:07:52,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-04-02 22:07:52,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:07:52,512 INFO L225 Difference]: With dead ends: 40 [2023-04-02 22:07:52,512 INFO L226 Difference]: Without dead ends: 20 [2023-04-02 22:07:52,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 22:07:52,518 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:07:52,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 47 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:07:52,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-04-02 22:07:52,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-04-02 22:07:52,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 22:07:52,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2023-04-02 22:07:52,549 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2023-04-02 22:07:52,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:07:52,550 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2023-04-02 22:07:52,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:07:52,550 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2023-04-02 22:07:52,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-04-02 22:07:52,551 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:07:52,551 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:07:52,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 22:07:52,552 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:07:52,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:07:52,553 INFO L85 PathProgramCache]: Analyzing trace with hash -681215853, now seen corresponding path program 1 times [2023-04-02 22:07:52,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:07:52,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043648650] [2023-04-02 22:07:52,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:07:52,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:07:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:07:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:07:52,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:07:52,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043648650] [2023-04-02 22:07:52,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043648650] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:07:52,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:07:52,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 22:07:52,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59602182] [2023-04-02 22:07:52,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:07:52,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 22:07:52,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:07:52,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 22:07:52,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 22:07:52,686 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 22:07:52,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:07:52,731 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2023-04-02 22:07:52,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 22:07:52,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-04-02 22:07:52,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:07:52,734 INFO L225 Difference]: With dead ends: 30 [2023-04-02 22:07:52,734 INFO L226 Difference]: Without dead ends: 28 [2023-04-02 22:07:52,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 22:07:52,735 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 39 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 [2023-04-02 22:07:52,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 39 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:07:52,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-04-02 22:07:52,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2023-04-02 22:07:52,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 22:07:52,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2023-04-02 22:07:52,751 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2023-04-02 22:07:52,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:07:52,751 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2023-04-02 22:07:52,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 22:07:52,752 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2023-04-02 22:07:52,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-04-02 22:07:52,753 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:07:52,754 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:07:52,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 22:07:52,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:07:52,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:07:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1924226285, now seen corresponding path program 1 times [2023-04-02 22:07:52,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:07:52,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193486881] [2023-04-02 22:07:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:07:52,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:07:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:07:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 22:07:52,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:07:52,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193486881] [2023-04-02 22:07:52,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193486881] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:07:52,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097060085] [2023-04-02 22:07:52,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:07:52,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:07:52,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:07:52,913 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) [2023-04-02 22:07:52,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 22:07:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:07:52,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-02 22:07:52,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:07:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 22:07:53,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:07:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 22:07:53,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097060085] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:07:53,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [245784613] [2023-04-02 22:07:53,323 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2023-04-02 22:07:53,324 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:07:53,327 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:07:53,331 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:07:53,331 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:07:53,447 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:07:54,199 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:07:54,205 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:07:54,210 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:07:54,840 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '380#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:07:54,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:07:54,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 22:07:54,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-04-02 22:07:54,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043856824] [2023-04-02 22:07:54,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 22:07:54,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 22:07:54,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:07:54,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 22:07:54,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-04-02 22:07:54,846 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-02 22:07:54,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:07:54,925 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2023-04-02 22:07:54,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 22:07:54,926 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 28 [2023-04-02 22:07:54,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:07:54,929 INFO L225 Difference]: With dead ends: 38 [2023-04-02 22:07:54,930 INFO L226 Difference]: Without dead ends: 36 [2023-04-02 22:07:54,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2023-04-02 22:07:54,933 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:07:54,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 55 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:07:54,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-04-02 22:07:54,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2023-04-02 22:07:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 22:07:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-04-02 22:07:54,951 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28 [2023-04-02 22:07:54,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:07:54,951 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-04-02 22:07:54,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-02 22:07:54,952 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2023-04-02 22:07:54,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-04-02 22:07:54,953 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:07:54,953 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:07:54,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 22:07:55,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:07:55,159 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:07:55,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:07:55,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1850477971, now seen corresponding path program 2 times [2023-04-02 22:07:55,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:07:55,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814017984] [2023-04-02 22:07:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:07:55,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:07:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:07:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-04-02 22:07:55,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:07:55,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814017984] [2023-04-02 22:07:55,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814017984] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:07:55,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342839897] [2023-04-02 22:07:55,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:07:55,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:07:55,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:07:55,309 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) [2023-04-02 22:07:55,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 22:07:55,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-04-02 22:07:55,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:07:55,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-02 22:07:55,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:07:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-04-02 22:07:55,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:07:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-04-02 22:07:55,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342839897] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:07:55,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [324777302] [2023-04-02 22:07:55,455 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2023-04-02 22:07:55,455 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:07:55,455 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:07:55,456 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:07:55,456 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:07:55,474 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:07:55,916 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:07:55,919 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:07:55,922 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:07:56,485 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '744#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:07:56,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:07:56,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 22:07:56,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2023-04-02 22:07:56,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221834489] [2023-04-02 22:07:56,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 22:07:56,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 22:07:56,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:07:56,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 22:07:56,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-04-02 22:07:56,488 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-02 22:07:56,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:07:56,539 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2023-04-02 22:07:56,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 22:07:56,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 40 [2023-04-02 22:07:56,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:07:56,540 INFO L225 Difference]: With dead ends: 35 [2023-04-02 22:07:56,541 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 22:07:56,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 106 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-04-02 22:07:56,544 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:07:56,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 43 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:07:56,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 22:07:56,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 22:07:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 22:07:56,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 22:07:56,545 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2023-04-02 22:07:56,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:07:56,546 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 22:07:56,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-02 22:07:56,546 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 22:07:56,546 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 22:07:56,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 22:07:56,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 22:07:56,749 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,SelfDestructingSolverStorable3 [2023-04-02 22:07:56,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 22:07:56,802 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2023-04-02 22:07:56,802 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 12) no Hoare annotation was computed. [2023-04-02 22:07:56,802 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 14 16) no Hoare annotation was computed. [2023-04-02 22:07:56,802 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2023-04-02 22:07:56,802 INFO L899 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2023-04-02 22:07:56,803 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 24 45) no Hoare annotation was computed. [2023-04-02 22:07:56,803 INFO L902 garLoopResultBuilder]: At program point L44(lines 25 45) the Hoare annotation is: true [2023-04-02 22:07:56,803 INFO L899 garLoopResultBuilder]: For program point L42(lines 38 43) no Hoare annotation was computed. [2023-04-02 22:07:56,803 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 24 45) the Hoare annotation is: true [2023-04-02 22:07:56,803 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (and (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2023-04-02 22:07:56,804 INFO L895 garLoopResultBuilder]: At program point L41-1(line 41) the Hoare annotation is: (and (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2023-04-02 22:07:56,804 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 43) the Hoare annotation is: (and (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2023-04-02 22:07:56,804 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:07:56,804 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:07:56,804 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:07:56,804 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 22:07:56,804 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 22:07:56,804 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:07:56,804 INFO L899 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2023-04-02 22:07:56,805 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2023-04-02 22:07:56,805 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 22) the Hoare annotation is: true [2023-04-02 22:07:56,805 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-04-02 22:07:56,805 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-04-02 22:07:56,805 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2023-04-02 22:07:56,808 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-04-02 22:07:56,809 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 22:07:56,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 10:07:56 BoogieIcfgContainer [2023-04-02 22:07:56,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 22:07:56,819 INFO L158 Benchmark]: Toolchain (without parser) took 5336.41ms. Allocated memory was 283.1MB in the beginning and 339.7MB in the end (delta: 56.6MB). Free memory was 236.5MB in the beginning and 246.2MB in the end (delta: -9.8MB). Peak memory consumption was 47.7MB. Max. memory is 8.0GB. [2023-04-02 22:07:56,820 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 175.1MB. Free memory was 125.0MB in the beginning and 124.9MB in the end (delta: 136.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 22:07:56,820 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.10ms. Allocated memory is still 283.1MB. Free memory was 236.1MB in the beginning and 225.9MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 22:07:56,820 INFO L158 Benchmark]: Boogie Preprocessor took 25.86ms. Allocated memory is still 283.1MB. Free memory was 225.9MB in the beginning and 224.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 22:07:56,820 INFO L158 Benchmark]: RCFGBuilder took 321.45ms. Allocated memory is still 283.1MB. Free memory was 224.3MB in the beginning and 212.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 22:07:56,821 INFO L158 Benchmark]: TraceAbstraction took 4787.90ms. Allocated memory was 283.1MB in the beginning and 339.7MB in the end (delta: 56.6MB). Free memory was 211.3MB in the beginning and 246.2MB in the end (delta: -34.9MB). Peak memory consumption was 22.6MB. Max. memory is 8.0GB. [2023-04-02 22:07:56,822 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 175.1MB. Free memory was 125.0MB in the beginning and 124.9MB in the end (delta: 136.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 197.10ms. Allocated memory is still 283.1MB. Free memory was 236.1MB in the beginning and 225.9MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.86ms. Allocated memory is still 283.1MB. Free memory was 225.9MB in the beginning and 224.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 321.45ms. Allocated memory is still 283.1MB. Free memory was 224.3MB in the beginning and 212.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4787.90ms. Allocated memory was 283.1MB in the beginning and 339.7MB in the end (delta: 56.6MB). Free memory was 211.3MB in the beginning and 246.2MB in the end (delta: -34.9MB). Peak memory consumption was 22.6MB. Max. memory is 8.0GB. * 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 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 184 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 133 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 173 IncrementalHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 51 mSDtfsCounter, 173 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 178 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=3, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 16 PreInvPairs, 27 NumberOfFragments, 33 HoareAnnotationTreeSize, 16 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 102 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 163 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 435 SizeOfPredicates, 8 NumberOfNonLiveVariables, 171 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 224/245 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: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: glob2_pathlim_off <= MAXPATHLEN && 0 <= glob2_p_off - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-04-02 22:07:56,837 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...