/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/bitvector/jain_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 21:05:30,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 21:05:30,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 21:05:30,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 21:05:30,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 21:05:30,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 21:05:30,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 21:05:30,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 21:05:30,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 21:05:30,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 21:05:30,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 21:05:30,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 21:05:30,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 21:05:30,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 21:05:30,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 21:05:30,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 21:05:30,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 21:05:30,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 21:05:30,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 21:05:30,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 21:05:30,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 21:05:30,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 21:05:30,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 21:05:30,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 21:05:30,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 21:05:30,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 21:05:30,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 21:05:30,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 21:05:30,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 21:05:30,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 21:05:30,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 21:05:30,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 21:05:30,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 21:05:30,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 21:05:30,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 21:05:30,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 21:05:30,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 21:05:30,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 21:05:30,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 21:05:30,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 21:05:30,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 21:05:30,948 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 21:05:30,971 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 21:05:30,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 21:05:30,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 21:05:30,972 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 21:05:30,972 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 21:05:30,972 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 21:05:30,972 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 21:05:30,972 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 21:05:30,973 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 21:05:30,973 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 21:05:30,973 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 21:05:30,973 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 21:05:30,973 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 21:05:30,973 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 21:05:30,973 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 21:05:30,973 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 21:05:30,974 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 21:05:30,974 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 21:05:30,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 21:05:30,974 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 21:05:30,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 21:05:30,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 21:05:30,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 21:05:30,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 21:05:30,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 21:05:30,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 21:05:30,975 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 21:05:30,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 21:05:30,975 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 21:05:30,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 21:05:30,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 21:05:30,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 21:05:30,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 21:05:30,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 21:05:30,976 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 21:05:30,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 21:05:30,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 21:05:30,976 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 21:05:30,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 21:05:30,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 21:05:30,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 21:05:30,979 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 21:05:31,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 21:05:31,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 21:05:31,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 21:05:31,181 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 21:05:31,181 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 21:05:31,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/jain_2-1.c [2023-03-31 21:05:32,228 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 21:05:32,429 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 21:05:32,429 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/jain_2-1.c [2023-03-31 21:05:32,433 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18d4ebf86/c17750ec20514ebdade9ef67ebe9af9a/FLAG3f5b72b1a [2023-03-31 21:05:32,446 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18d4ebf86/c17750ec20514ebdade9ef67ebe9af9a [2023-03-31 21:05:32,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 21:05:32,450 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 21:05:32,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 21:05:32,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 21:05:32,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 21:05:32,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:05:32" (1/1) ... [2023-03-31 21:05:32,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b6167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:32, skipping insertion in model container [2023-03-31 21:05:32,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:05:32" (1/1) ... [2023-03-31 21:05:32,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 21:05:32,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 21:05:32,573 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/bitvector/jain_2-1.c[675,688] [2023-03-31 21:05:32,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 21:05:32,588 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 21:05:32,596 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/bitvector/jain_2-1.c[675,688] [2023-03-31 21:05:32,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 21:05:32,606 INFO L208 MainTranslator]: Completed translation [2023-03-31 21:05:32,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:32 WrapperNode [2023-03-31 21:05:32,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 21:05:32,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 21:05:32,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 21:05:32,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 21:05:32,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:32" (1/1) ... [2023-03-31 21:05:32,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:32" (1/1) ... [2023-03-31 21:05:32,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:32" (1/1) ... [2023-03-31 21:05:32,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:32" (1/1) ... [2023-03-31 21:05:32,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:32" (1/1) ... [2023-03-31 21:05:32,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:32" (1/1) ... [2023-03-31 21:05:32,625 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:32" (1/1) ... [2023-03-31 21:05:32,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:32" (1/1) ... [2023-03-31 21:05:32,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 21:05:32,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 21:05:32,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 21:05:32,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 21:05:32,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:32" (1/1) ... [2023-03-31 21:05:32,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 21:05:32,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:05:32,649 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 21:05:32,654 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 21:05:32,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 21:05:32,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 21:05:32,697 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 21:05:32,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 21:05:32,699 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 21:05:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 21:05:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 21:05:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 21:05:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 21:05:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-03-31 21:05:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 21:05:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 21:05:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 21:05:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 21:05:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 21:05:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 21:05:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 21:05:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 21:05:32,754 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 21:05:32,755 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 21:05:32,841 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 21:05:32,853 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 21:05:32,853 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 21:05:32,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:05:32 BoogieIcfgContainer [2023-03-31 21:05:32,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 21:05:32,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 21:05:32,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 21:05:32,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 21:05:32,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 09:05:32" (1/3) ... [2023-03-31 21:05:32,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa647d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:05:32, skipping insertion in model container [2023-03-31 21:05:32,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:32" (2/3) ... [2023-03-31 21:05:32,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa647d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:05:32, skipping insertion in model container [2023-03-31 21:05:32,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:05:32" (3/3) ... [2023-03-31 21:05:32,860 INFO L112 eAbstractionObserver]: Analyzing ICFG jain_2-1.c [2023-03-31 21:05:32,871 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 21:05:32,871 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 21:05:32,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 21:05:32,912 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;@5427d657, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 21:05:32,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 21:05:32,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 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 21:05:32,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-03-31 21:05:32,919 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:05:32,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:05:32,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:05:32,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:05:32,926 INFO L85 PathProgramCache]: Analyzing trace with hash 608148264, now seen corresponding path program 1 times [2023-03-31 21:05:32,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:05:32,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250454855] [2023-03-31 21:05:32,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:05:32,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:05:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:05:33,273 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 21:05:33,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:05:33,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250454855] [2023-03-31 21:05:33,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250454855] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:05:33,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:05:33,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 21:05:33,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856079119] [2023-03-31 21:05:33,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:05:33,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 21:05:33,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:05:33,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 21:05:33,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-31 21:05:33,296 INFO L87 Difference]: Start difference. First operand has 16 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 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 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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 21:05:33,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:05:33,412 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2023-03-31 21:05:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 21:05:33,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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 10 [2023-03-31 21:05:33,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:05:33,418 INFO L225 Difference]: With dead ends: 31 [2023-03-31 21:05:33,418 INFO L226 Difference]: Without dead ends: 20 [2023-03-31 21:05:33,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-31 21:05:33,422 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 21:05:33,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 34 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 21:05:33,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-03-31 21:05:33,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2023-03-31 21:05:33,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 21:05:33,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2023-03-31 21:05:33,468 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2023-03-31 21:05:33,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:05:33,469 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2023-03-31 21:05:33,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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 21:05:33,469 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2023-03-31 21:05:33,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-03-31 21:05:33,470 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:05:33,470 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:05:33,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 21:05:33,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:05:33,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:05:33,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1356721081, now seen corresponding path program 1 times [2023-03-31 21:05:33,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:05:33,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213144692] [2023-03-31 21:05:33,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:05:33,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:05:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:05:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:05:33,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:05:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213144692] [2023-03-31 21:05:33,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213144692] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 21:05:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610890012] [2023-03-31 21:05:33,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:05:33,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:05:33,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:05:33,716 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 21:05:33,758 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 21:05:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:05:33,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 23 conjunts are in the unsatisfiable core [2023-03-31 21:05:33,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 21:05:33,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 21:05:33,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 21:05:36,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610890012] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 21:05:36,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [427243317] [2023-03-31 21:05:36,617 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-03-31 21:05:36,617 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 21:05:36,630 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 21:05:36,634 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 21:05:36,634 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 21:05:36,673 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 21:05:36,736 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 24 for LOIs [2023-03-31 21:05:36,749 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 21:05:36,754 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 21:05:36,978 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '177#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 21:05:36,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 21:05:36,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-03-31 21:05:36,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2023-03-31 21:05:36,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536965650] [2023-03-31 21:05:36,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-03-31 21:05:36,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 21:05:36,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:05:36,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 21:05:36,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=309, Unknown=1, NotChecked=0, Total=380 [2023-03-31 21:05:36,982 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 21:05:37,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:05:37,015 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2023-03-31 21:05:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 21:05:37,015 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 16 [2023-03-31 21:05:37,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:05:37,016 INFO L225 Difference]: With dead ends: 19 [2023-03-31 21:05:37,016 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 21:05:37,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=78, Invalid=341, Unknown=1, NotChecked=0, Total=420 [2023-03-31 21:05:37,017 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 21:05:37,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 21:05:37,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 21:05:37,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 21:05:37,018 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 21:05:37,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 21:05:37,018 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2023-03-31 21:05:37,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:05:37,019 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 21:05:37,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 21:05:37,019 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 21:05:37,019 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 21:05:37,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 21:05:37,028 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 21:05:37,225 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 21:05:37,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 21:05:37,276 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2023-03-31 21:05:37,276 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 11) no Hoare annotation was computed. [2023-03-31 21:05:37,276 INFO L895 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (and (= (mod (+ main_~x~0 1) 2) 0) (= (mod (+ main_~y~0 1) 2) 0)) [2023-03-31 21:05:37,279 INFO L895 garLoopResultBuilder]: At program point L33-1(lines 27 34) the Hoare annotation is: (and (= (mod (+ main_~x~0 1) 2) 0) (= (mod (+ main_~y~0 1) 2) 0)) [2023-03-31 21:05:37,279 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 20 36) no Hoare annotation was computed. [2023-03-31 21:05:37,279 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 20 36) the Hoare annotation is: true [2023-03-31 21:05:37,279 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 21:05:37,280 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 21:05:37,280 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 21:05:37,280 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-03-31 21:05:37,280 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 21:05:37,280 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 21:05:37,280 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-03-31 21:05:37,280 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2023-03-31 21:05:37,280 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 19) no Hoare annotation was computed. [2023-03-31 21:05:37,280 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 19) no Hoare annotation was computed. [2023-03-31 21:05:37,280 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 19) the Hoare annotation is: true [2023-03-31 21:05:37,280 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2023-03-31 21:05:37,283 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-03-31 21:05:37,284 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 21:05:37,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 09:05:37 BoogieIcfgContainer [2023-03-31 21:05:37,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 21:05:37,296 INFO L158 Benchmark]: Toolchain (without parser) took 4843.92ms. Allocated memory is still 265.3MB. Free memory was 227.1MB in the beginning and 147.9MB in the end (delta: 79.1MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. [2023-03-31 21:05:37,299 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 166.7MB. Free memory is still 114.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 21:05:37,299 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.58ms. Allocated memory is still 265.3MB. Free memory was 226.6MB in the beginning and 216.6MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-03-31 21:05:37,301 INFO L158 Benchmark]: Boogie Preprocessor took 18.85ms. Allocated memory is still 265.3MB. Free memory was 216.6MB in the beginning and 215.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-03-31 21:05:37,301 INFO L158 Benchmark]: RCFGBuilder took 227.57ms. Allocated memory is still 265.3MB. Free memory was 215.6MB in the beginning and 204.6MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-03-31 21:05:37,301 INFO L158 Benchmark]: TraceAbstraction took 4437.63ms. Allocated memory is still 265.3MB. Free memory was 204.0MB in the beginning and 147.9MB in the end (delta: 56.1MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. [2023-03-31 21:05:37,302 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 166.7MB. Free memory is still 114.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 154.58ms. Allocated memory is still 265.3MB. Free memory was 226.6MB in the beginning and 216.6MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.85ms. Allocated memory is still 265.3MB. Free memory was 216.6MB in the beginning and 215.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 227.57ms. Allocated memory is still 265.3MB. Free memory was 215.6MB in the beginning and 204.6MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 4437.63ms. Allocated memory is still 265.3MB. Free memory was 204.0MB in the beginning and 147.9MB in the end (delta: 56.1MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: 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 5 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53 IncrementalHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 14 mSDtfsCounter, 53 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=1, InterpolantAutomatonStates: 13, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 35 HoareAnnotationTreeSize, 9 FomulaSimplifications, 5 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 49 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 2 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 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: 27]: Loop Invariant Derived loop invariant: (x + 1) % 2 == 0 && (y + 1) % 2 == 0 RESULT: Ultimate proved your program to be correct! [2023-03-31 21:05:37,317 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...