/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-industry-pattern/aiob_4.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 22:13:22,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 22:13:22,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 22:13:22,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 22:13:22,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 22:13:22,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 22:13:22,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 22:13:22,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 22:13:22,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 22:13:22,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 22:13:22,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 22:13:22,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 22:13:22,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 22:13:22,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 22:13:22,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 22:13:22,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 22:13:22,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 22:13:22,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 22:13:22,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 22:13:22,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 22:13:22,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 22:13:22,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 22:13:22,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 22:13:22,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 22:13:22,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 22:13:22,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 22:13:22,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 22:13:22,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 22:13:22,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 22:13:22,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 22:13:22,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 22:13:22,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 22:13:22,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 22:13:22,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 22:13:22,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 22:13:22,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 22:13:22,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 22:13:22,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 22:13:22,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 22:13:22,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 22:13:22,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 22:13:22,879 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 22:13:22,906 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 22:13:22,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 22:13:22,907 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 22:13:22,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 22:13:22,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 22:13:22,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 22:13:22,908 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 22:13:22,908 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 22:13:22,908 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 22:13:22,908 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 22:13:22,909 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 22:13:22,909 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 22:13:22,909 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 22:13:22,909 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 22:13:22,909 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 22:13:22,909 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 22:13:22,909 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 22:13:22,909 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 22:13:22,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 22:13:22,910 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 22:13:22,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 22:13:22,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 22:13:22,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 22:13:22,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 22:13:22,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 22:13:22,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 22:13:22,911 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 22:13:22,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 22:13:22,911 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 22:13:22,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 22:13:22,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 22:13:22,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 22:13:22,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:13:22,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 22:13:22,912 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 22:13:22,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 22:13:22,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 22:13:22,912 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 22:13:22,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 22:13:22,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 22:13:22,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 22:13:22,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 22:13:23,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 22:13:23,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 22:13:23,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 22:13:23,106 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 22:13:23,106 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 22:13:23,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2023-04-02 22:13:24,188 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 22:13:24,424 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 22:13:24,425 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2023-04-02 22:13:24,431 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/337a8c93f/4b7854bcda454d60b79932d36fdc1aca/FLAG93a1c4987 [2023-04-02 22:13:24,443 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/337a8c93f/4b7854bcda454d60b79932d36fdc1aca [2023-04-02 22:13:24,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 22:13:24,447 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 22:13:24,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 22:13:24,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 22:13:24,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 22:13:24,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:13:24" (1/1) ... [2023-04-02 22:13:24,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73644c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:24, skipping insertion in model container [2023-04-02 22:13:24,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:13:24" (1/1) ... [2023-04-02 22:13:24,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 22:13:24,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 22:13:24,649 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-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2023-04-02 22:13:24,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:13:24,665 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 22:13:24,718 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-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2023-04-02 22:13:24,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:13:24,729 WARN L667 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-04-02 22:13:24,733 INFO L208 MainTranslator]: Completed translation [2023-04-02 22:13:24,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:24 WrapperNode [2023-04-02 22:13:24,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 22:13:24,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 22:13:24,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 22:13:24,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 22:13:24,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:24" (1/1) ... [2023-04-02 22:13:24,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:24" (1/1) ... [2023-04-02 22:13:24,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:24" (1/1) ... [2023-04-02 22:13:24,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:24" (1/1) ... [2023-04-02 22:13:24,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:24" (1/1) ... [2023-04-02 22:13:24,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:24" (1/1) ... [2023-04-02 22:13:24,780 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:24" (1/1) ... [2023-04-02 22:13:24,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:24" (1/1) ... [2023-04-02 22:13:24,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 22:13:24,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 22:13:24,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 22:13:24,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 22:13:24,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:24" (1/1) ... [2023-04-02 22:13:24,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:13:24,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:13:24,819 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 22:13:24,840 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 22:13:24,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 22:13:24,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 22:13:24,859 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 22:13:24,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 22:13:24,860 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 22:13:24,860 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 22:13:24,860 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 22:13:24,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 22:13:24,860 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2023-04-02 22:13:24,860 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-04-02 22:13:24,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 22:13:24,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 22:13:24,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 22:13:24,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 22:13:24,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 22:13:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 22:13:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 22:13:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 22:13:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 22:13:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 22:13:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 22:13:25,001 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 22:13:25,006 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 22:13:25,574 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 22:13:25,595 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 22:13:25,595 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 22:13:25,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:13:25 BoogieIcfgContainer [2023-04-02 22:13:25,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 22:13:25,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 22:13:25,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 22:13:25,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 22:13:25,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 10:13:24" (1/3) ... [2023-04-02 22:13:25,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0cfab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:13:25, skipping insertion in model container [2023-04-02 22:13:25,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:13:24" (2/3) ... [2023-04-02 22:13:25,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0cfab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:13:25, skipping insertion in model container [2023-04-02 22:13:25,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:13:25" (3/3) ... [2023-04-02 22:13:25,608 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2023-04-02 22:13:25,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 22:13:25,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 22:13:25,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 22:13:25,676 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;@21ad6f4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 22:13:25,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 22:13:25,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 22:13:25,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-04-02 22:13:25,683 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:13:25,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:13:25,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:13:25,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:13:25,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1258389775, now seen corresponding path program 1 times [2023-04-02 22:13:25,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:13:25,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651590510] [2023-04-02 22:13:25,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:13:25,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:13:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:13:26,277 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 22:13:26,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:13:26,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651590510] [2023-04-02 22:13:26,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651590510] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:13:26,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:13:26,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 22:13:26,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017259632] [2023-04-02 22:13:26,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:13:26,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 22:13:26,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:13:26,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 22:13:26,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 22:13:26,325 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:13:26,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:13:26,388 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2023-04-02 22:13:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 22:13:26,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-04-02 22:13:26,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:13:26,397 INFO L225 Difference]: With dead ends: 34 [2023-04-02 22:13:26,397 INFO L226 Difference]: Without dead ends: 18 [2023-04-02 22:13:26,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-04-02 22:13:26,404 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:13:26,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 49 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:13:26,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-04-02 22:13:26,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2023-04-02 22:13:26,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:13:26,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-04-02 22:13:26,431 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2023-04-02 22:13:26,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:13:26,431 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-04-02 22:13:26,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:13:26,432 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-04-02 22:13:26,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-04-02 22:13:26,433 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:13:26,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:13:26,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 22:13:26,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:13:26,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:13:26,434 INFO L85 PathProgramCache]: Analyzing trace with hash 138210329, now seen corresponding path program 1 times [2023-04-02 22:13:26,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:13:26,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666759913] [2023-04-02 22:13:26,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:13:26,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:13:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:13:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:13:26,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:13:26,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666759913] [2023-04-02 22:13:26,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666759913] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:13:26,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753035782] [2023-04-02 22:13:26,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:13:26,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:13:26,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:13:26,901 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 22:13:26,912 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 22:13:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:13:27,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 22:13:27,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:13:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:13:27,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:13:27,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:13:27,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753035782] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:13:27,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1539309296] [2023-04-02 22:13:27,388 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-04-02 22:13:27,388 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:13:27,391 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:13:27,395 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:13:27,395 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:13:27,492 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2023-04-02 22:13:31,314 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-02 22:13:31,340 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:13:32,508 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '191#(and (<= 1 |#StackHeapBarrier|) (= main_~__tmp_1~0.base main_~Id_MCDC_89__Id_MCDC_88~0.base) (= |main_~#main__Id_MCDC_119~0.base| main_~__tmp_1~0.base) (= main_~Id_MCDC_89__Id_MCDC_88~0.offset 0) (= |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0) (= main_~Id_MCDC_89____CPAchecker_TMP_1~0 0) (= main_~__VERIFIER_assert__Id_MCDC_92~0 0) (= main_~main__Id_MCDC_115~0 0) (<= (+ |#StackHeapBarrier| 1) |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (= main_~__tmp_2~0 0) (<= (+ |#StackHeapBarrier| 1) main_~Id_MCDC_89__Id_MCDC_88~0.base) (= |main_~#main__Id_MCDC_119~0.offset| 0) (= main_~main__Id_MCDC_116~0 0) (= |#NULL.offset| 0) (<= 0 main_~Id_MCDC_89__Id_MCDC_96~0) (= |old(~Id_MCDC_93~0)| 0) (<= 42 (mod ~Id_MCDC_93~0 4294967296)) (= ~Id_MCDC_93~0 main_~Id_MCDC_89__Id_MCDC_96~0) (= ~__return_main~0 0) (= main_~__tmp_1~0.offset 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:13:32,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:13:32,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 22:13:32,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-04-02 22:13:32,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650667269] [2023-04-02 22:13:32,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 22:13:32,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 22:13:32,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:13:32,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 22:13:32,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2023-04-02 22:13:32,512 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:13:32,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:13:32,734 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2023-04-02 22:13:32,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 22:13:32,735 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-04-02 22:13:32,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:13:32,735 INFO L225 Difference]: With dead ends: 32 [2023-04-02 22:13:32,736 INFO L226 Difference]: Without dead ends: 30 [2023-04-02 22:13:32,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=172, Invalid=758, Unknown=0, NotChecked=0, Total=930 [2023-04-02 22:13:32,737 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 50 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:13:32,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 56 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:13:32,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-04-02 22:13:32,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2023-04-02 22:13:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:13:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2023-04-02 22:13:32,743 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2023-04-02 22:13:32,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:13:32,743 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2023-04-02 22:13:32,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:13:32,744 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2023-04-02 22:13:32,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-02 22:13:32,744 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:13:32,744 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:13:32,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 22:13:32,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:13:32,953 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:13:32,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:13:32,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2040579183, now seen corresponding path program 2 times [2023-04-02 22:13:32,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:13:32,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970034135] [2023-04-02 22:13:32,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:13:32,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:13:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:13:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:13:33,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:13:33,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970034135] [2023-04-02 22:13:33,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970034135] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:13:33,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96950208] [2023-04-02 22:13:33,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:13:33,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:13:33,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:13:33,359 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 22:13:33,385 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 22:13:33,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 22:13:33,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:13:33,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 28 conjunts are in the unsatisfiable core [2023-04-02 22:13:33,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:13:33,733 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 22:13:33,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 17 [2023-04-02 22:13:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 22:13:33,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:13:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 22:13:34,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96950208] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:13:34,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [353675168] [2023-04-02 22:13:34,403 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-04-02 22:13:34,403 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:13:34,403 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:13:34,404 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:13:34,404 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:13:34,469 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2023-04-02 22:13:36,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-02 22:13:36,537 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:13:37,665 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '482#(and (<= 1 |#StackHeapBarrier|) (= main_~__tmp_1~0.base main_~Id_MCDC_89__Id_MCDC_88~0.base) (= |main_~#main__Id_MCDC_119~0.base| main_~__tmp_1~0.base) (= main_~Id_MCDC_89__Id_MCDC_88~0.offset 0) (= |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0) (= main_~Id_MCDC_89____CPAchecker_TMP_1~0 0) (= main_~__VERIFIER_assert__Id_MCDC_92~0 0) (= main_~main__Id_MCDC_115~0 0) (<= (+ |#StackHeapBarrier| 1) |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (= main_~__tmp_2~0 0) (<= (+ |#StackHeapBarrier| 1) main_~Id_MCDC_89__Id_MCDC_88~0.base) (= |main_~#main__Id_MCDC_119~0.offset| 0) (= main_~main__Id_MCDC_116~0 0) (= |#NULL.offset| 0) (<= 0 main_~Id_MCDC_89__Id_MCDC_96~0) (= |old(~Id_MCDC_93~0)| 0) (<= 42 (mod ~Id_MCDC_93~0 4294967296)) (= ~Id_MCDC_93~0 main_~Id_MCDC_89__Id_MCDC_96~0) (= ~__return_main~0 0) (= main_~__tmp_1~0.offset 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:13:37,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:13:37,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 22:13:37,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2023-04-02 22:13:37,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036550024] [2023-04-02 22:13:37,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 22:13:37,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-02 22:13:37,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:13:37,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-02 22:13:37,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=917, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 22:13:37,668 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:13:38,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:13:38,342 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2023-04-02 22:13:38,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 22:13:38,343 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-04-02 22:13:38,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:13:38,343 INFO L225 Difference]: With dead ends: 35 [2023-04-02 22:13:38,343 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 22:13:38,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=404, Invalid=1852, Unknown=0, NotChecked=0, Total=2256 [2023-04-02 22:13:38,345 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 107 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:13:38,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 44 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:13:38,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 22:13:38,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 22:13:38,349 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 22:13:38,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 22:13:38,349 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2023-04-02 22:13:38,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:13:38,349 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 22:13:38,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:13:38,349 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 22:13:38,349 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 22:13:38,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 22:13:38,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 22:13:38,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-04-02 22:13:38,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 22:13:38,766 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2023-04-02 22:13:38,766 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 4) no Hoare annotation was computed. [2023-04-02 22:13:38,766 INFO L899 garLoopResultBuilder]: For program point L161(lines 161 224) no Hoare annotation was computed. [2023-04-02 22:13:38,766 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 133 225) no Hoare annotation was computed. [2023-04-02 22:13:38,767 INFO L895 garLoopResultBuilder]: At program point L180(lines 180 222) the Hoare annotation is: (let ((.cse0 (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0))) (or (not (= |old(~Id_MCDC_93~0)| 0)) (and (= ~Id_MCDC_93~0 0) (= main_~Id_MCDC_89__Id_MCDC_96~0 0) .cse0) (and (= main_~__VERIFIER_assert__Id_MCDC_92~0 1) (not (= 41 (mod (+ 4294967295 main_~Id_MCDC_89__Id_MCDC_96~0) 4294967296))) (< (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296) 42) .cse0 (= ~Id_MCDC_93~0 main_~Id_MCDC_89__Id_MCDC_96~0)))) [2023-04-02 22:13:38,767 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 133 225) no Hoare annotation was computed. [2023-04-02 22:13:38,767 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 133 225) the Hoare annotation is: (or (not (= |old(~Id_MCDC_93~0)| 0)) (= ~Id_MCDC_93~0 0)) [2023-04-02 22:13:38,767 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 209) no Hoare annotation was computed. [2023-04-02 22:13:38,767 INFO L899 garLoopResultBuilder]: For program point L193(line 193) no Hoare annotation was computed. [2023-04-02 22:13:38,767 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 193) no Hoare annotation was computed. [2023-04-02 22:13:38,767 INFO L899 garLoopResultBuilder]: For program point L191(lines 191 210) no Hoare annotation was computed. [2023-04-02 22:13:38,767 INFO L895 garLoopResultBuilder]: At program point L175(lines 167 223) the Hoare annotation is: (let ((.cse3 (= main_~__VERIFIER_assert__Id_MCDC_92~0 1)) (.cse0 (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0))) (or (not (= |old(~Id_MCDC_93~0)| 0)) (and (= ~Id_MCDC_93~0 0) (= main_~Id_MCDC_89__Id_MCDC_96~0 0) .cse0) (let ((.cse1 (mod (+ 4294967295 main_~Id_MCDC_89__Id_MCDC_96~0) 4294967296)) (.cse2 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296))) (and (< .cse1 42) (not (= 41 .cse2)) .cse3 (not (= 41 .cse1)) (< .cse2 42) .cse0)) (and (<= main_~Id_MCDC_89__Id_MCDC_96~0 1) (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) .cse3 (<= ~Id_MCDC_93~0 1) (<= 1 main_~Id_MCDC_89__Id_MCDC_96~0) .cse0))) [2023-04-02 22:13:38,768 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:13:38,768 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:13:38,768 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:13:38,768 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (= ~Id_MCDC_93~0 0) [2023-04-02 22:13:38,768 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 22:13:38,768 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:13:38,770 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-04-02 22:13:38,772 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 22:13:38,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 10:13:38 BoogieIcfgContainer [2023-04-02 22:13:38,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 22:13:38,799 INFO L158 Benchmark]: Toolchain (without parser) took 14352.07ms. Allocated memory was 233.8MB in the beginning and 741.3MB in the end (delta: 507.5MB). Free memory was 197.4MB in the beginning and 264.9MB in the end (delta: -67.5MB). Peak memory consumption was 441.6MB. Max. memory is 8.0GB. [2023-04-02 22:13:38,799 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 22:13:38,800 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.22ms. Allocated memory is still 233.8MB. Free memory was 197.4MB in the beginning and 180.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-04-02 22:13:38,800 INFO L158 Benchmark]: Boogie Preprocessor took 50.68ms. Allocated memory is still 233.8MB. Free memory was 180.6MB in the beginning and 177.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-04-02 22:13:38,800 INFO L158 Benchmark]: RCFGBuilder took 811.63ms. Allocated memory is still 233.8MB. Free memory was 177.5MB in the beginning and 158.1MB in the end (delta: 19.4MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. [2023-04-02 22:13:38,802 INFO L158 Benchmark]: TraceAbstraction took 13195.11ms. Allocated memory was 233.8MB in the beginning and 741.3MB in the end (delta: 507.5MB). Free memory was 157.6MB in the beginning and 264.9MB in the end (delta: -107.3MB). Peak memory consumption was 401.3MB. Max. memory is 8.0GB. [2023-04-02 22:13:38,804 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 188.7MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 286.22ms. Allocated memory is still 233.8MB. Free memory was 197.4MB in the beginning and 180.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.68ms. Allocated memory is still 233.8MB. Free memory was 180.6MB in the beginning and 177.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 811.63ms. Allocated memory is still 233.8MB. Free memory was 177.5MB in the beginning and 158.1MB in the end (delta: 19.4MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. * TraceAbstraction took 13195.11ms. Allocated memory was 233.8MB in the beginning and 741.3MB in the end (delta: 507.5MB). Free memory was 157.6MB in the beginning and 264.9MB in the end (delta: -107.3MB). Peak memory consumption was 401.3MB. 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: 193]: 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 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.1s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 179 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 179 mSDsluCounter, 149 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 122 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 234 IncrementalHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 27 mSDtfsCounter, 234 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=2, InterpolantAutomatonStates: 39, 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, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 18 NumberOfFragments, 158 HoareAnnotationTreeSize, 6 FomulaSimplifications, 126 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 406 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 90 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 123 ConstructedInterpolants, 13 QuantifiedInterpolants, 1080 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1163 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 36/117 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: ((!(\old(Id_MCDC_93) == 0) || ((Id_MCDC_93 == 0 && Id_MCDC_89__Id_MCDC_96 == 0) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0)) || ((((((4294967295 + Id_MCDC_89__Id_MCDC_96) % 4294967296 < 42 && !(41 == (Id_MCDC_93 + 4294967295) % 4294967296)) && __VERIFIER_assert__Id_MCDC_92 == 1) && !(41 == (4294967295 + Id_MCDC_89__Id_MCDC_96) % 4294967296)) && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0)) || (((((Id_MCDC_89__Id_MCDC_96 <= 1 && 0 < Id_MCDC_93 / 4294967296 + 1) && __VERIFIER_assert__Id_MCDC_92 == 1) && Id_MCDC_93 <= 1) && 1 <= Id_MCDC_89__Id_MCDC_96) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) - InvariantResult [Line: 180]: Loop Invariant Derived loop invariant: (!(\old(Id_MCDC_93) == 0) || ((Id_MCDC_93 == 0 && Id_MCDC_89__Id_MCDC_96 == 0) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0)) || ((((__VERIFIER_assert__Id_MCDC_92 == 1 && !(41 == (4294967295 + Id_MCDC_89__Id_MCDC_96) % 4294967296)) && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && Id_MCDC_93 == Id_MCDC_89__Id_MCDC_96) RESULT: Ultimate proved your program to be correct! [2023-04-02 22:13:38,826 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...