/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/loop-new/gauss_sum.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 11:06:58,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 11:06:58,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 11:06:58,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 11:06:58,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 11:06:58,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 11:06:58,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 11:06:58,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 11:06:58,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 11:06:58,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 11:06:58,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 11:06:58,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 11:06:58,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 11:06:58,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 11:06:58,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 11:06:58,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 11:06:58,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 11:06:58,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 11:06:58,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 11:06:58,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 11:06:58,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 11:06:58,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 11:06:58,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 11:06:58,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 11:06:58,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 11:06:58,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 11:06:58,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 11:06:58,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 11:06:58,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 11:06:58,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 11:06:58,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 11:06:58,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 11:06:58,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 11:06:58,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 11:06:58,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 11:06:58,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 11:06:58,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 11:06:59,017 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 11:06:59,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 11:06:59,018 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 11:06:59,018 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 11:06:59,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 11:06:59,019 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 11:06:59,019 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 11:06:59,020 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 11:06:59,020 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 11:06:59,020 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 11:06:59,021 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 11:06:59,021 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 11:06:59,021 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 11:06:59,021 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 11:06:59,021 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 11:06:59,021 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 11:06:59,022 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 11:06:59,022 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 11:06:59,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 11:06:59,023 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 11:06:59,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 11:06:59,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 11:06:59,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 11:06:59,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 11:06:59,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 11:06:59,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 11:06:59,024 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 11:06:59,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 11:06:59,024 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 11:06:59,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 11:06:59,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 11:06:59,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 11:06:59,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 11:06:59,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 11:06:59,025 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 11:06:59,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 11:06:59,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 11:06:59,025 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 11:06:59,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 11:06:59,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 11:06:59,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 11:06:59,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 11:06:59,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 11:06:59,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 11:06:59,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 11:06:59,239 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 11:06:59,240 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 11:06:59,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/gauss_sum.i.p+lhb-reducer.c [2023-04-01 11:07:00,293 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 11:07:00,446 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 11:07:00,447 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/gauss_sum.i.p+lhb-reducer.c [2023-04-01 11:07:00,453 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d28a807d3/851442f8a903471eb4be860aed009c68/FLAGa2c2d05f5 [2023-04-01 11:07:00,464 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d28a807d3/851442f8a903471eb4be860aed009c68 [2023-04-01 11:07:00,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 11:07:00,467 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 11:07:00,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 11:07:00,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 11:07:00,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 11:07:00,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:07:00" (1/1) ... [2023-04-01 11:07:00,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@621d9d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:00, skipping insertion in model container [2023-04-01 11:07:00,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:07:00" (1/1) ... [2023-04-01 11:07:00,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 11:07:00,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 11:07:00,631 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-new/gauss_sum.i.p+lhb-reducer.c[1444,1457] [2023-04-01 11:07:00,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 11:07:00,643 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 11:07:00,660 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-new/gauss_sum.i.p+lhb-reducer.c[1444,1457] [2023-04-01 11:07:00,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 11:07:00,674 INFO L208 MainTranslator]: Completed translation [2023-04-01 11:07:00,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:00 WrapperNode [2023-04-01 11:07:00,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 11:07:00,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 11:07:00,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 11:07:00,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 11:07:00,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:00" (1/1) ... [2023-04-01 11:07:00,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:00" (1/1) ... [2023-04-01 11:07:00,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:00" (1/1) ... [2023-04-01 11:07:00,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:00" (1/1) ... [2023-04-01 11:07:00,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:00" (1/1) ... [2023-04-01 11:07:00,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:00" (1/1) ... [2023-04-01 11:07:00,693 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:00" (1/1) ... [2023-04-01 11:07:00,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:00" (1/1) ... [2023-04-01 11:07:00,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 11:07:00,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 11:07:00,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 11:07:00,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 11:07:00,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:00" (1/1) ... [2023-04-01 11:07:00,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 11:07:00,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:07:00,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 11:07:00,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 11:07:00,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 11:07:00,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 11:07:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 11:07:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 11:07:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 11:07:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 11:07:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 11:07:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 11:07:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 11:07:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 11:07:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 11:07:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 11:07:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 11:07:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 11:07:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 11:07:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 11:07:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 11:07:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 11:07:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 11:07:00,813 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 11:07:00,815 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 11:07:00,933 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 11:07:00,945 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 11:07:00,945 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 11:07:00,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:07:00 BoogieIcfgContainer [2023-04-01 11:07:00,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 11:07:00,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 11:07:00,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 11:07:00,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 11:07:00,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:07:00" (1/3) ... [2023-04-01 11:07:00,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f35472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:07:00, skipping insertion in model container [2023-04-01 11:07:00,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:00" (2/3) ... [2023-04-01 11:07:00,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f35472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:07:00, skipping insertion in model container [2023-04-01 11:07:00,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:07:00" (3/3) ... [2023-04-01 11:07:00,953 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.p+lhb-reducer.c [2023-04-01 11:07:00,982 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 11:07:00,983 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 11:07:01,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 11:07:01,038 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;@1a3a56a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 11:07:01,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 11:07:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 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) [2023-04-01 11:07:01,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-04-01 11:07:01,056 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:07:01,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:07:01,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:07:01,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:07:01,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1419880332, now seen corresponding path program 1 times [2023-04-01 11:07:01,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:07:01,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613317610] [2023-04-01 11:07:01,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:07:01,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:07:01,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 11:07:01,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619626623] [2023-04-01 11:07:01,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:07:01,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:07:01,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:07:01,184 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 11:07:01,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 11:07:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:07:01,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 31 conjunts are in the unsatisfiable core [2023-04-01 11:07:01,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:07:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:07:01,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 11:07:01,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:07:01,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613317610] [2023-04-01 11:07:01,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 11:07:01,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619626623] [2023-04-01 11:07:01,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619626623] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:07:01,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 11:07:01,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 11:07:01,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101103277] [2023-04-01 11:07:01,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:07:01,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 11:07:01,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:07:01,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 11:07:01,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 11:07:01,530 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 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 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2023-04-01 11:07:01,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:07:01,665 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2023-04-01 11:07:01,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 11:07:01,667 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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 15 [2023-04-01 11:07:01,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:07:01,677 INFO L225 Difference]: With dead ends: 40 [2023-04-01 11:07:01,677 INFO L226 Difference]: Without dead ends: 17 [2023-04-01 11:07:01,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-04-01 11:07:01,682 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 11:07:01,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 178 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 11:07:01,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-04-01 11:07:01,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-04-01 11:07:01,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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) [2023-04-01 11:07:01,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-04-01 11:07:01,704 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2023-04-01 11:07:01,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:07:01,705 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-04-01 11:07:01,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2023-04-01 11:07:01,705 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-04-01 11:07:01,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-04-01 11:07:01,706 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:07:01,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:07:01,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 11:07:01,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-01 11:07:01,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:07:01,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:07:01,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1066679785, now seen corresponding path program 1 times [2023-04-01 11:07:01,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:07:01,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640473643] [2023-04-01 11:07:01,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:07:01,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:07:01,940 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 11:07:01,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595258461] [2023-04-01 11:07:01,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:07:01,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:07:01,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:07:01,954 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 11:07:01,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 11:07:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:07:02,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 35 conjunts are in the unsatisfiable core [2023-04-01 11:07:02,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:07:02,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:07:02,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 11:07:03,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:07:03,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:07:03,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640473643] [2023-04-01 11:07:03,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 11:07:03,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595258461] [2023-04-01 11:07:03,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595258461] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 11:07:03,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [996548657] [2023-04-01 11:07:03,108 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2023-04-01 11:07:03,108 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 11:07:03,111 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 11:07:03,115 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 11:07:03,116 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 11:07:03,277 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 49 for LOIs [2023-04-01 11:07:03,671 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-01 11:07:03,678 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 11:07:04,686 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '251#(and (< main_~main__n~0 main_~main__i~0) (= (select |#length| 3) 12) (not (= (* main_~main__sum~0 2) (+ (* main_~main__n~0 main_~main__n~0) main_~main__n~0))) (= 2 (select |#length| 1)) (= main_~__VERIFIER_assert__cond~0 0) (= (select |#valid| 3) 1) (= ~__return_96~0 0) (not (= |#StackHeapBarrier| 0)) (= main_~__tmp_1~0 0) (= (select |#valid| 1) 1) (= 28 (select |#length| 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select (select |#memory_int| 1) 0) 48) (= |old(~__return_96~0)| 0) (= (select (select |#memory_int| 1) 1) 0) (= ~__return_main~0 0) (= |#NULL.base| 0))' at error location [2023-04-01 11:07:04,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 11:07:04,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 11:07:04,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2023-04-01 11:07:04,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445808505] [2023-04-01 11:07:04,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 11:07:04,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 11:07:04,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:07:04,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 11:07:04,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=545, Unknown=1, NotChecked=0, Total=650 [2023-04-01 11:07:04,690 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 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) [2023-04-01 11:07:05,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:07:05,104 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-04-01 11:07:05,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 11:07:05,105 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 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 16 [2023-04-01 11:07:05,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:07:05,105 INFO L225 Difference]: With dead ends: 19 [2023-04-01 11:07:05,105 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 11:07:05,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=170, Invalid=1019, Unknown=1, NotChecked=0, Total=1190 [2023-04-01 11:07:05,107 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 11:07:05,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 11:07:05,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 11:07:05,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 11:07:05,108 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) [2023-04-01 11:07:05,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 11:07:05,108 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2023-04-01 11:07:05,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:07:05,108 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 11:07:05,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 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) [2023-04-01 11:07:05,109 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 11:07:05,109 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 11:07:05,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 11:07:05,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 11:07:05,318 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,SelfDestructingSolverStorable1 [2023-04-01 11:07:05,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 11:07:05,387 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2023-04-01 11:07:05,387 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 4) no Hoare annotation was computed. [2023-04-01 11:07:05,387 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 6 8) no Hoare annotation was computed. [2023-04-01 11:07:05,387 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2023-04-01 11:07:05,387 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 103) no Hoare annotation was computed. [2023-04-01 11:07:05,387 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 104) no Hoare annotation was computed. [2023-04-01 11:07:05,387 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 13 106) no Hoare annotation was computed. [2023-04-01 11:07:05,387 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 105) no Hoare annotation was computed. [2023-04-01 11:07:05,388 INFO L895 garLoopResultBuilder]: At program point $Ultimate##16(lines 54 78) the Hoare annotation is: (let ((.cse0 (* main_~main__sum~0 2))) (and (forall ((main_~main__n~0 Int)) (or (< main_~main__n~0 main_~main__i~0) (< main_~main__i~0 main_~main__n~0) (= (+ (* main_~main__n~0 main_~main__n~0) main_~main__n~0) (+ .cse0 (* 2 main_~main__i~0))))) (or (= .cse0 (+ (* main_~main__n~0 main_~main__n~0) main_~main__n~0)) (<= main_~main__i~0 main_~main__n~0)))) [2023-04-01 11:07:05,388 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 13 106) no Hoare annotation was computed. [2023-04-01 11:07:05,388 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 13 106) the Hoare annotation is: true [2023-04-01 11:07:05,388 INFO L899 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2023-04-01 11:07:05,388 INFO L899 garLoopResultBuilder]: For program point L67(lines 67 76) no Hoare annotation was computed. [2023-04-01 11:07:05,388 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 69) no Hoare annotation was computed. [2023-04-01 11:07:05,388 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 83) no Hoare annotation was computed. [2023-04-01 11:07:05,388 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 88) no Hoare annotation was computed. [2023-04-01 11:07:05,389 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 93) no Hoare annotation was computed. [2023-04-01 11:07:05,389 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 98) no Hoare annotation was computed. [2023-04-01 11:07:05,389 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 11:07:05,389 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 11:07:05,389 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 11:07:05,389 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-01 11:07:05,389 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 11:07:05,389 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 11:07:05,391 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-01 11:07:05,394 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 11:07:05,405 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,406 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,406 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,406 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,406 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,410 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,410 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,411 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,411 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,411 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 11:07:05 BoogieIcfgContainer [2023-04-01 11:07:05,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 11:07:05,414 INFO L158 Benchmark]: Toolchain (without parser) took 4947.04ms. Allocated memory was 286.3MB in the beginning and 350.2MB in the end (delta: 64.0MB). Free memory was 237.4MB in the beginning and 285.0MB in the end (delta: -47.6MB). Peak memory consumption was 16.9MB. Max. memory is 8.0GB. [2023-04-01 11:07:05,415 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 178.3MB. Free memory is still 129.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 11:07:05,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.45ms. Allocated memory is still 286.3MB. Free memory was 237.4MB in the beginning and 226.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 11:07:05,415 INFO L158 Benchmark]: Boogie Preprocessor took 18.63ms. Allocated memory is still 286.3MB. Free memory was 226.4MB in the beginning and 224.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-01 11:07:05,417 INFO L158 Benchmark]: RCFGBuilder took 252.66ms. Allocated memory is still 286.3MB. Free memory was 224.9MB in the beginning and 212.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-01 11:07:05,418 INFO L158 Benchmark]: TraceAbstraction took 4464.42ms. Allocated memory was 286.3MB in the beginning and 350.2MB in the end (delta: 64.0MB). Free memory was 211.2MB in the beginning and 285.0MB in the end (delta: -73.8MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 11:07:05,419 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 178.3MB. Free memory is still 129.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 207.45ms. Allocated memory is still 286.3MB. Free memory was 237.4MB in the beginning and 226.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.63ms. Allocated memory is still 286.3MB. Free memory was 226.4MB in the beginning and 224.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 252.66ms. Allocated memory is still 286.3MB. Free memory was 224.9MB in the beginning and 212.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4464.42ms. Allocated memory was 286.3MB in the beginning and 350.2MB in the end (delta: 64.0MB). Free memory was 211.2MB in the beginning and 285.0MB in the end (delta: -73.8MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] * 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: 69]: 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, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 200 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 169 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 198 IncrementalHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 31 mSDtfsCounter, 198 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 39 HoareAnnotationTreeSize, 5 FomulaSimplifications, 5 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 50 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 44 ConstructedInterpolants, 6 QuantifiedInterpolants, 267 SizeOfPredicates, 9 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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: 54]: Loop Invariant [2023-04-01 11:07:05,430 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,430 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,430 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,430 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,430 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,430 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,430 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,430 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,431 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-01 11:07:05,431 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] Derived loop invariant: (forall main_~main__n~0 : int :: (main_~main__n~0 < main__i || main__i < main_~main__n~0) || main_~main__n~0 * main_~main__n~0 + main_~main__n~0 == main__sum * 2 + 2 * main__i) && (main__sum * 2 == main__n * main__n + main__n || main__i <= main__n) RESULT: Ultimate proved your program to be correct! [2023-04-01 11:07:05,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...