/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 22:29:39,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 22:29:39,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 22:29:39,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 22:29:39,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 22:29:39,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 22:29:39,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 22:29:39,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 22:29:39,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 22:29:39,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 22:29:39,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 22:29:39,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 22:29:39,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 22:29:39,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 22:29:39,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 22:29:39,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 22:29:39,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 22:29:39,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 22:29:39,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 22:29:39,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 22:29:39,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 22:29:39,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 22:29:39,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 22:29:39,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 22:29:39,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 22:29:39,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 22:29:39,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 22:29:39,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 22:29:39,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 22:29:39,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 22:29:39,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 22:29:39,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 22:29:39,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 22:29:39,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 22:29:39,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 22:29:39,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 22:29:39,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 22:29:39,872 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 22:29:39,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 22:29:39,873 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 22:29:39,873 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 22:29:39,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 22:29:39,874 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 22:29:39,874 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 22:29:39,874 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 22:29:39,874 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 22:29:39,874 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 22:29:39,874 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 22:29:39,874 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 22:29:39,875 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 22:29:39,875 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 22:29:39,875 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 22:29:39,875 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 22:29:39,875 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 22:29:39,875 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 22:29:39,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 22:29:39,876 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 22:29:39,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 22:29:39,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 22:29:39,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 22:29:39,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 22:29:39,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 22:29:39,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 22:29:39,877 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 22:29:39,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 22:29:39,877 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 22:29:39,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 22:29:39,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 22:29:39,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 22:29:39,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:29:39,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 22:29:39,878 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 22:29:39,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 22:29:39,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 22:29:39,878 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 22:29:39,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 22:29:39,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 22:29:39,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 22:29:39,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 22:29:40,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 22:29:40,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 22:29:40,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 22:29:40,078 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 22:29:40,078 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 22:29:40,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2023-04-02 22:29:41,217 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 22:29:41,424 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 22:29:41,425 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2023-04-02 22:29:41,430 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34e8d061c/382a1a83aa874372949bda95e8662880/FLAGf27384a9f [2023-04-02 22:29:41,444 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34e8d061c/382a1a83aa874372949bda95e8662880 [2023-04-02 22:29:41,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 22:29:41,450 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 22:29:41,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 22:29:41,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 22:29:41,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 22:29:41,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:29:41" (1/1) ... [2023-04-02 22:29:41,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d043ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:29:41, skipping insertion in model container [2023-04-02 22:29:41,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:29:41" (1/1) ... [2023-04-02 22:29:41,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 22:29:41,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 22:29:41,624 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-zilu/benchmark52_polynomial.i[872,885] [2023-04-02 22:29:41,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:29:41,645 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 22:29:41,657 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-zilu/benchmark52_polynomial.i[872,885] [2023-04-02 22:29:41,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:29:41,672 INFO L208 MainTranslator]: Completed translation [2023-04-02 22:29:41,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:29:41 WrapperNode [2023-04-02 22:29:41,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 22:29:41,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 22:29:41,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 22:29:41,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 22:29:41,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:29:41" (1/1) ... [2023-04-02 22:29:41,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:29:41" (1/1) ... [2023-04-02 22:29:41,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:29:41" (1/1) ... [2023-04-02 22:29:41,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:29:41" (1/1) ... [2023-04-02 22:29:41,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:29:41" (1/1) ... [2023-04-02 22:29:41,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:29:41" (1/1) ... [2023-04-02 22:29:41,700 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:29:41" (1/1) ... [2023-04-02 22:29:41,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:29:41" (1/1) ... [2023-04-02 22:29:41,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 22:29:41,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 22:29:41,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 22:29:41,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 22:29:41,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:29:41" (1/1) ... [2023-04-02 22:29:41,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:29:41,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:29:41,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 22:29:41,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 22:29:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 22:29:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 22:29:41,766 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 22:29:41,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 22:29:41,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 22:29:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 22:29:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 22:29:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 22:29:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 22:29:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 22:29:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 22:29:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 22:29:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 22:29:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 22:29:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 22:29:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 22:29:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 22:29:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 22:29:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 22:29:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 22:29:41,833 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 22:29:41,835 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 22:29:41,981 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 22:29:42,013 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 22:29:42,013 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 22:29:42,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:29:42 BoogieIcfgContainer [2023-04-02 22:29:42,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 22:29:42,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 22:29:42,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 22:29:42,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 22:29:42,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 10:29:41" (1/3) ... [2023-04-02 22:29:42,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33eb3aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:29:42, skipping insertion in model container [2023-04-02 22:29:42,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:29:41" (2/3) ... [2023-04-02 22:29:42,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33eb3aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:29:42, skipping insertion in model container [2023-04-02 22:29:42,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:29:42" (3/3) ... [2023-04-02 22:29:42,022 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark52_polynomial.i [2023-04-02 22:29:42,036 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 22:29:42,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 22:29:42,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 22:29:42,078 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;@2141a780, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 22:29:42,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 22:29:42,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 22:29:42,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-04-02 22:29:42,088 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:29:42,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:29:42,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:29:42,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:29:42,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1357240066, now seen corresponding path program 1 times [2023-04-02 22:29:42,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:29:42,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814870470] [2023-04-02 22:29:42,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:29:42,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:29:42,181 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:29:42,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440464561] [2023-04-02 22:29:42,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:29:42,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:29:42,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:29:42,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:29:42,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 22:29:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:29:42,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 22:29:42,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:29:42,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:29:42,364 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 22:29:42,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:29:42,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814870470] [2023-04-02 22:29:42,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:29:42,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440464561] [2023-04-02 22:29:42,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440464561] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:29:42,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:29:42,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 22:29:42,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055576624] [2023-04-02 22:29:42,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:29:42,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 22:29:42,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:29:42,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 22:29:42,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 22:29:42,406 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:29:42,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:29:42,445 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2023-04-02 22:29:42,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 22:29:42,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-04-02 22:29:42,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:29:42,457 INFO L225 Difference]: With dead ends: 32 [2023-04-02 22:29:42,457 INFO L226 Difference]: Without dead ends: 13 [2023-04-02 22:29:42,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 22:29:42,462 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:29:42,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:29:42,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-04-02 22:29:42,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-04-02 22:29:42,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:29:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-04-02 22:29:42,492 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2023-04-02 22:29:42,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:29:42,493 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-04-02 22:29:42,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:29:42,500 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-04-02 22:29:42,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-04-02 22:29:42,501 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:29:42,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:29:42,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 22:29:42,706 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 [2023-04-02 22:29:42,707 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:29:42,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:29:42,708 INFO L85 PathProgramCache]: Analyzing trace with hash 51745214, now seen corresponding path program 1 times [2023-04-02 22:29:42,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:29:42,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475584072] [2023-04-02 22:29:42,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:29:42,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:29:42,723 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:29:42,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697464420] [2023-04-02 22:29:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:29:42,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:29:42,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:29:42,725 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:29:42,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 22:29:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:29:42,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-02 22:29:42,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:29:42,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:29:42,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:29:43,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:29:43,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:29:43,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475584072] [2023-04-02 22:29:43,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:29:43,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697464420] [2023-04-02 22:29:43,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697464420] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:29:43,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [6316978] [2023-04-02 22:29:43,078 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-04-02 22:29:43,078 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:29:43,081 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:29:43,086 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:29:43,086 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:29:43,152 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:29:43,208 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-04-02 22:29:43,266 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:29:43,280 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:29:43,582 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '198#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:29:43,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:29:43,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:29:43,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-04-02 22:29:43,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421379024] [2023-04-02 22:29:43,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:29:43,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 22:29:43,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:29:43,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 22:29:43,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2023-04-02 22:29:43,587 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:29:43,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:29:43,646 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2023-04-02 22:29:43,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 22:29:43,646 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-04-02 22:29:43,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:29:43,647 INFO L225 Difference]: With dead ends: 13 [2023-04-02 22:29:43,647 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 22:29:43,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2023-04-02 22:29:43,649 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:29:43,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 30 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:29:43,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 22:29:43,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 22:29:43,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 22:29:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 22:29:43,656 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2023-04-02 22:29:43,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:29:43,656 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 22:29:43,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:29:43,656 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 22:29:43,656 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 22:29:43,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 22:29:43,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 22:29:43,865 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 [2023-04-02 22:29:43,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 22:29:43,889 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2023-04-02 22:29:43,889 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 11) no Hoare annotation was computed. [2023-04-02 22:29:43,889 INFO L899 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2023-04-02 22:29:43,889 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 19 27) no Hoare annotation was computed. [2023-04-02 22:29:43,889 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-04-02 22:29:43,890 INFO L895 garLoopResultBuilder]: At program point L22-2(lines 22 24) the Hoare annotation is: (or (and (< main_~i~0 11) (< 0 (+ main_~i~0 9))) (and (< 0 (+ main_~i~0 10)) (< main_~i~0 10))) [2023-04-02 22:29:43,890 INFO L895 garLoopResultBuilder]: At program point L22-3(lines 22 24) the Hoare annotation is: (and (< main_~i~0 11) (<= 100 (* main_~i~0 main_~i~0)) (< 0 (+ main_~i~0 9))) [2023-04-02 22:29:43,890 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 19 27) no Hoare annotation was computed. [2023-04-02 22:29:43,890 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 27) the Hoare annotation is: true [2023-04-02 22:29:43,890 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:29:43,890 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:29:43,890 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:29:43,890 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 22:29:43,890 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 22:29:43,890 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:29:43,891 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-04-02 22:29:43,891 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2023-04-02 22:29:43,891 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2023-04-02 22:29:43,891 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2023-04-02 22:29:43,891 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 18) the Hoare annotation is: true [2023-04-02 22:29:43,891 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2023-04-02 22:29:43,894 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-02 22:29:43,895 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 22:29:43,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 10:29:43 BoogieIcfgContainer [2023-04-02 22:29:43,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 22:29:43,907 INFO L158 Benchmark]: Toolchain (without parser) took 2457.11ms. Allocated memory is still 291.5MB. Free memory was 252.2MB in the beginning and 218.7MB in the end (delta: 33.5MB). Peak memory consumption was 33.9MB. Max. memory is 8.0GB. [2023-04-02 22:29:43,908 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory was 143.6MB in the beginning and 143.5MB in the end (delta: 70.5kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 22:29:43,908 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.17ms. Allocated memory is still 291.5MB. Free memory was 252.2MB in the beginning and 242.3MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-04-02 22:29:43,908 INFO L158 Benchmark]: Boogie Preprocessor took 29.09ms. Allocated memory is still 291.5MB. Free memory was 242.3MB in the beginning and 240.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 22:29:43,909 INFO L158 Benchmark]: RCFGBuilder took 311.73ms. Allocated memory is still 291.5MB. Free memory was 240.7MB in the beginning and 229.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 22:29:43,909 INFO L158 Benchmark]: TraceAbstraction took 1890.12ms. Allocated memory is still 291.5MB. Free memory was 229.2MB in the beginning and 218.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.8MB. Max. memory is 8.0GB. [2023-04-02 22:29:43,910 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory was 143.6MB in the beginning and 143.5MB in the end (delta: 70.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 221.17ms. Allocated memory is still 291.5MB. Free memory was 252.2MB in the beginning and 242.3MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.09ms. Allocated memory is still 291.5MB. Free memory was 242.3MB in the beginning and 240.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 311.73ms. Allocated memory is still 291.5MB. Free memory was 240.7MB in the beginning and 229.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1890.12ms. Allocated memory is still 291.5MB. Free memory was 229.2MB in the beginning and 218.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 23 mSDtfsCounter, 47 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 38 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 124 SizeOfPredicates, 2 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 14 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: 22]: Loop Invariant Derived loop invariant: (i < 11 && 0 < i + 9) || (0 < i + 10 && i < 10) RESULT: Ultimate proved your program to be correct! [2023-04-02 22:29:43,930 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...