/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 IntervalDomain -i ../sv-benchmarks/c/loop-lit/bhmr2007.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:02:14,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:02:14,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:02:14,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:02:14,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:02:14,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:02:14,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:02:14,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:02:14,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:02:14,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:02:14,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:02:14,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:02:14,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:02:14,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:02:14,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:02:14,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:02:14,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:02:14,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:02:14,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:02:14,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:02:14,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:02:14,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:02:14,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:02:14,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:02:14,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 23:02:14,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 23:02:14,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 23:02:14,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 23:02:14,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 23:02:14,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 23:02:14,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:02:14,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:02:14,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:02:14,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:02:14,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:02:14,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:02:14,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:02:14,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:02:14,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:02:14,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:02:14,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:02:14,845 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 [2023-03-31 23:02:14,877 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:02:14,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:02:14,877 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:02:14,878 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:02:14,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:02:14,878 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:02:14,878 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:02:14,878 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:02:14,878 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:02:14,879 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:02:14,879 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:02:14,879 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:02:14,879 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:02:14,879 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:02:14,879 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:02:14,879 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:02:14,879 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:02:14,879 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:02:14,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:02:14,880 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:02:14,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:02:14,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:02:14,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:02:14,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:02:14,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:02:14,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:02:14,880 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:02:14,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:02:14,880 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:02:14,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:02:14,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:02:14,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:02:14,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:02:14,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:02:14,881 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:02:14,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:02:14,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:02:14,881 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:02:14,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:02:14,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:02:14,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:02:14,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:02:15,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:02:15,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:02:15,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:02:15,121 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:02:15,121 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:02:15,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/bhmr2007.i [2023-03-31 23:02:16,256 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:02:16,409 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:02:16,409 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/bhmr2007.i [2023-03-31 23:02:16,413 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/267215aab/e5ca80651eb6410b9d2353fae1bd7e2a/FLAG04b86cf5c [2023-03-31 23:02:16,424 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/267215aab/e5ca80651eb6410b9d2353fae1bd7e2a [2023-03-31 23:02:16,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:02:16,426 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:02:16,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:02:16,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:02:16,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:02:16,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:02:16" (1/1) ... [2023-03-31 23:02:16,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243de942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:16, skipping insertion in model container [2023-03-31 23:02:16,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:02:16" (1/1) ... [2023-03-31 23:02:16,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:02:16,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:02:16,585 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-lit/bhmr2007.i[895,908] [2023-03-31 23:02:16,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:02:16,601 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:02:16,610 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-lit/bhmr2007.i[895,908] [2023-03-31 23:02:16,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:02:16,626 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:02:16,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:16 WrapperNode [2023-03-31 23:02:16,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:02:16,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:02:16,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:02:16,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:02:16,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:16" (1/1) ... [2023-03-31 23:02:16,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:16" (1/1) ... [2023-03-31 23:02:16,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:16" (1/1) ... [2023-03-31 23:02:16,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:16" (1/1) ... [2023-03-31 23:02:16,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:16" (1/1) ... [2023-03-31 23:02:16,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:16" (1/1) ... [2023-03-31 23:02:16,643 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:16" (1/1) ... [2023-03-31 23:02:16,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:16" (1/1) ... [2023-03-31 23:02:16,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:02:16,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:02:16,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:02:16,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:02:16,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:16" (1/1) ... [2023-03-31 23:02:16,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:02:16,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:02:16,667 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) [2023-03-31 23:02:16,672 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 [2023-03-31 23:02:16,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:02:16,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:02:16,693 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:02:16,694 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 23:02:16,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 23:02:16,694 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:02:16,694 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:02:16,694 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:02:16,694 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 23:02:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 23:02:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:02:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:02:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 23:02:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 23:02:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 23:02:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:02:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:02:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:02:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:02:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:02:16,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:02:16,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:02:16,747 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:02:16,748 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:02:16,859 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:02:16,887 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:02:16,888 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 23:02:16,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:02:16 BoogieIcfgContainer [2023-03-31 23:02:16,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:02:16,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:02:16,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:02:16,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:02:16,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:02:16" (1/3) ... [2023-03-31 23:02:16,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a92b5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:02:16, skipping insertion in model container [2023-03-31 23:02:16,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:16" (2/3) ... [2023-03-31 23:02:16,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a92b5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:02:16, skipping insertion in model container [2023-03-31 23:02:16,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:02:16" (3/3) ... [2023-03-31 23:02:16,895 INFO L112 eAbstractionObserver]: Analyzing ICFG bhmr2007.i [2023-03-31 23:02:16,907 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:02:16,907 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:02:16,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:02:16,941 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;@52312fa3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:02:16,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:02:16,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 23:02:16,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 23:02:16,949 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:02:16,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:02:16,950 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:02:16,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:02:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1170079055, now seen corresponding path program 1 times [2023-03-31 23:02:16,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:02:16,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934570911] [2023-03-31 23:02:16,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:02:16,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:02:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:02:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:02:17,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:02:17,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934570911] [2023-03-31 23:02:17,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934570911] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:02:17,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:02:17,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 23:02:17,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999384983] [2023-03-31 23:02:17,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:02:17,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 23:02:17,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:02:17,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 23:02:17,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:02:17,351 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2023-03-31 23:02:17,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:02:17,439 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-03-31 23:02:17,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 23:02:17,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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 [2023-03-31 23:02:17,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:02:17,445 INFO L225 Difference]: With dead ends: 39 [2023-03-31 23:02:17,445 INFO L226 Difference]: Without dead ends: 13 [2023-03-31 23:02:17,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 23:02:17,449 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:02:17,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 70 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:02:17,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-03-31 23:02:17,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-03-31 23:02:17,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:02:17,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-03-31 23:02:17,471 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2023-03-31 23:02:17,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:02:17,471 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-03-31 23:02:17,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2023-03-31 23:02:17,472 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-03-31 23:02:17,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-03-31 23:02:17,472 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:02:17,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:02:17,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:02:17,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:02:17,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:02:17,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1817264866, now seen corresponding path program 1 times [2023-03-31 23:02:17,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:02:17,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265563008] [2023-03-31 23:02:17,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:02:17,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:02:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:02:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:02:17,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:02:17,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265563008] [2023-03-31 23:02:17,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265563008] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:02:17,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626410329] [2023-03-31 23:02:17,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:02:17,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:02:17,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:02:17,661 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) [2023-03-31 23:02:17,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 23:02:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:02:17,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 16 conjunts are in the unsatisfiable core [2023-03-31 23:02:17,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:02:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:02:17,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:02:18,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:02:18,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626410329] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 23:02:18,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [304921188] [2023-03-31 23:02:18,105 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-03-31 23:02:18,105 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:02:18,107 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:02:18,110 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:02:18,111 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:02:18,148 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 23:02:18,180 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2023-03-31 23:02:18,191 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 23:02:18,194 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:02:18,401 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '185#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 23:02:18,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:02:18,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 23:02:18,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-03-31 23:02:18,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783202720] [2023-03-31 23:02:18,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 23:02:18,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 23:02:18,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:02:18,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 23:02:18,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2023-03-31 23:02:18,404 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:02:18,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:02:18,573 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2023-03-31 23:02:18,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 23:02:18,573 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-03-31 23:02:18,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:02:18,573 INFO L225 Difference]: With dead ends: 15 [2023-03-31 23:02:18,573 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 23:02:18,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2023-03-31 23:02:18,575 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:02:18,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 35 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:02:18,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 23:02:18,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 23:02:18,576 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) [2023-03-31 23:02:18,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 23:02:18,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2023-03-31 23:02:18,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:02:18,576 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 23:02:18,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:02:18,576 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 23:02:18,577 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 23:02:18,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 23:02:18,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 23:02:18,779 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 [2023-03-31 23:02:18,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 23:02:18,828 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2023-03-31 23:02:18,828 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 12) no Hoare annotation was computed. [2023-03-31 23:02:18,828 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 14 16) no Hoare annotation was computed. [2023-03-31 23:02:18,828 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2023-03-31 23:02:18,829 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2023-03-31 23:02:18,831 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse0 (+ main_~b~0 main_~a~0)) (.cse1 (* main_~i~0 3))) (and (< .cse0 (+ (* main_~n~0 3) 1)) (< .cse1 (+ main_~b~0 main_~a~0 1)) (< .cse0 (+ .cse1 1)))) [2023-03-31 23:02:18,831 INFO L895 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (let ((.cse2 (* main_~i~0 3)) (.cse1 (* main_~n~0 3)) (.cse0 (+ main_~b~0 main_~a~0))) (and (< .cse0 (+ .cse1 1)) (< .cse2 (+ main_~b~0 main_~a~0 1)) (< .cse0 (+ .cse2 1)) (<= .cse1 .cse0))) [2023-03-31 23:02:18,831 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 24 40) no Hoare annotation was computed. [2023-03-31 23:02:18,831 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 24 40) no Hoare annotation was computed. [2023-03-31 23:02:18,831 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 24 40) the Hoare annotation is: true [2023-03-31 23:02:18,832 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2023-03-31 23:02:18,832 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 23:02:18,832 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 23:02:18,832 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 23:02:18,832 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-03-31 23:02:18,832 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 23:02:18,832 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 23:02:18,833 INFO L899 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2023-03-31 23:02:18,833 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2023-03-31 23:02:18,833 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 22) the Hoare annotation is: true [2023-03-31 23:02:18,833 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-03-31 23:02:18,833 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-03-31 23:02:18,833 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2023-03-31 23:02:18,835 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-03-31 23:02:18,837 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 23:02:18,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 11:02:18 BoogieIcfgContainer [2023-03-31 23:02:18,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 23:02:18,851 INFO L158 Benchmark]: Toolchain (without parser) took 2420.49ms. Allocated memory is still 241.2MB. Free memory was 192.2MB in the beginning and 131.0MB in the end (delta: 61.3MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. [2023-03-31 23:02:18,851 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 172.0MB. Free memory was 123.1MB in the beginning and 123.0MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:02:18,853 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.86ms. Allocated memory is still 241.2MB. Free memory was 192.2MB in the beginning and 182.0MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 23:02:18,853 INFO L158 Benchmark]: Boogie Preprocessor took 18.04ms. Allocated memory is still 241.2MB. Free memory was 182.0MB in the beginning and 180.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-03-31 23:02:18,854 INFO L158 Benchmark]: RCFGBuilder took 244.13ms. Allocated memory is still 241.2MB. Free memory was 180.4MB in the beginning and 167.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-03-31 23:02:18,854 INFO L158 Benchmark]: TraceAbstraction took 1955.40ms. Allocated memory is still 241.2MB. Free memory was 167.4MB in the beginning and 131.0MB in the end (delta: 36.4MB). Peak memory consumption was 36.8MB. Max. memory is 8.0GB. [2023-03-31 23:02:18,855 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 172.0MB. Free memory was 123.1MB in the beginning and 123.0MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 196.86ms. Allocated memory is still 241.2MB. Free memory was 192.2MB in the beginning and 182.0MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.04ms. Allocated memory is still 241.2MB. Free memory was 182.0MB in the beginning and 180.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 244.13ms. Allocated memory is still 241.2MB. Free memory was 180.4MB in the beginning and 167.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1955.40ms. Allocated memory is still 241.2MB. Free memory was 167.4MB in the beginning and 131.0MB in the end (delta: 36.4MB). Peak memory consumption was 36.8MB. 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, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 105 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 83 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 80 IncrementalHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 22 mSDtfsCounter, 80 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 18, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 66 HoareAnnotationTreeSize, 9 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 110 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 290 SizeOfPredicates, 3 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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: 28]: Loop Invariant Derived loop invariant: (b + a < n * 3 + 1 && i * 3 < b + a + 1) && b + a < i * 3 + 1 RESULT: Ultimate proved your program to be correct! [2023-03-31 23:02:18,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...