/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/loop-zilu/benchmark17_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:07:55,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:07:55,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:07:56,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:07:56,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:07:56,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:07:56,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:07:56,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:07:56,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:07:56,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:07:56,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:07:56,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:07:56,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:07:56,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:07:56,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:07:56,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:07:56,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:07:56,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:07:56,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:07:56,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:07:56,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:07:56,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:07:56,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:07:56,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:07:56,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 23:07:56,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:07:56,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:07:56,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:07:56,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:07:56,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:07:56,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:07:56,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:07:56,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:07:56,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:07:56,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:07:56,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:07:56,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 23:07:56,049 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:07:56,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:07:56,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:07:56,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:07:56,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:07:56,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:07:56,050 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:07:56,051 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:07:56,051 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:07:56,051 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:07:56,051 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:07:56,051 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:07:56,051 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:07:56,052 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:07:56,052 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:07:56,052 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:07:56,052 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:07:56,052 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:07:56,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:07:56,053 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:07:56,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:07:56,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:07:56,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:07:56,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:07:56,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:07:56,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:07:56,054 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:07:56,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:07:56,055 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:07:56,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:07:56,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:07:56,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:07:56,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:07:56,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:07:56,056 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:07:56,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:07:56,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:07:56,056 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:07:56,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:07:56,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:07:56,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:07:56,057 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:07:56,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:07:56,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:07:56,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:07:56,312 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:07:56,313 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:07:56,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark17_conjunctive.i [2023-03-31 23:07:57,482 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:07:57,679 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:07:57,680 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark17_conjunctive.i [2023-03-31 23:07:57,686 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0edc42040/9702d4ba75dd4a99bf8cc9b0e47a2e8d/FLAG2318a5e4d [2023-03-31 23:07:57,700 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0edc42040/9702d4ba75dd4a99bf8cc9b0e47a2e8d [2023-03-31 23:07:57,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:07:57,704 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:07:57,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:07:57,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:07:57,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:07:57,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:07:57" (1/1) ... [2023-03-31 23:07:57,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1551a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:07:57, skipping insertion in model container [2023-03-31 23:07:57,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:07:57" (1/1) ... [2023-03-31 23:07:57,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:07:57,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:07:57,828 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/benchmark17_conjunctive.i[873,886] [2023-03-31 23:07:57,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:07:57,845 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:07:57,855 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/benchmark17_conjunctive.i[873,886] [2023-03-31 23:07:57,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:07:57,871 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:07:57,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:07:57 WrapperNode [2023-03-31 23:07:57,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:07:57,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:07:57,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:07:57,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:07:57,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:07:57" (1/1) ... [2023-03-31 23:07:57,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:07:57" (1/1) ... [2023-03-31 23:07:57,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:07:57" (1/1) ... [2023-03-31 23:07:57,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:07:57" (1/1) ... [2023-03-31 23:07:57,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:07:57" (1/1) ... [2023-03-31 23:07:57,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:07:57" (1/1) ... [2023-03-31 23:07:57,904 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:07:57" (1/1) ... [2023-03-31 23:07:57,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:07:57" (1/1) ... [2023-03-31 23:07:57,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:07:57,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:07:57,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:07:57,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:07:57,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:07:57" (1/1) ... [2023-03-31 23:07:57,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:07:57,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:07:57,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 23:07:57,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 23:07:57,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:07:57,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:07:57,973 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:07:57,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 23:07:57,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:07:57,974 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:07:57,974 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 23:07:57,974 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 23:07:57,974 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:07:57,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:07:57,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 23:07:57,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 23:07:57,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 23:07:57,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:07:57,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:07:57,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:07:57,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:07:57,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:07:57,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:07:57,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:07:58,032 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:07:58,034 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:07:58,131 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:07:58,145 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:07:58,145 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 23:07:58,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:07:58 BoogieIcfgContainer [2023-03-31 23:07:58,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:07:58,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:07:58,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:07:58,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:07:58,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:07:57" (1/3) ... [2023-03-31 23:07:58,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f30a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:07:58, skipping insertion in model container [2023-03-31 23:07:58,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:07:57" (2/3) ... [2023-03-31 23:07:58,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f30a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:07:58, skipping insertion in model container [2023-03-31 23:07:58,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:07:58" (3/3) ... [2023-03-31 23:07:58,154 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark17_conjunctive.i [2023-03-31 23:07:58,167 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:07:58,167 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:07:58,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:07:58,213 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;@6bbd6d16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:07:58,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:07:58,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 23:07:58,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 23:07:58,224 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:07:58,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:07:58,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:07:58,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:07:58,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1357240066, now seen corresponding path program 1 times [2023-03-31 23:07:58,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:07:58,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740989052] [2023-03-31 23:07:58,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:07:58,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:07:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:07:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:07:58,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:07:58,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740989052] [2023-03-31 23:07:58,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740989052] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:07:58,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:07:58,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:07:58,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387839112] [2023-03-31 23:07:58,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:07:58,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:07:58,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:07:58,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:07:58,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:07:58,577 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 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:07:58,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:07:58,744 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2023-03-31 23:07:58,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 23:07:58,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-03-31 23:07:58,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:07:58,750 INFO L225 Difference]: With dead ends: 28 [2023-03-31 23:07:58,751 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 23:07:58,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-31 23:07:58,756 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:07:58,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 54 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:07:58,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 23:07:58,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 23:07:58,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-03-31 23:07:58,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 23:07:58,774 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2023-03-31 23:07:58,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:07:58,774 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 23:07:58,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:07:58,775 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 23:07:58,775 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 23:07:58,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 23:07:58,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:07:58,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 23:07:58,805 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2023-03-31 23:07:58,806 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 11) no Hoare annotation was computed. [2023-03-31 23:07:58,806 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2023-03-31 23:07:58,806 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 19 30) no Hoare annotation was computed. [2023-03-31 23:07:58,806 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2023-03-31 23:07:58,806 INFO L895 garLoopResultBuilder]: At program point L24-2(lines 24 27) the Hoare annotation is: (<= main_~i~0 main_~k~0) [2023-03-31 23:07:58,807 INFO L895 garLoopResultBuilder]: At program point L24-3(lines 24 27) the Hoare annotation is: (and (<= main_~i~0 main_~k~0) (<= main_~n~0 main_~k~0)) [2023-03-31 23:07:58,807 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 19 30) no Hoare annotation was computed. [2023-03-31 23:07:58,807 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 30) the Hoare annotation is: true [2023-03-31 23:07:58,807 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 23:07:58,807 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 23:07:58,807 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 23:07:58,807 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-03-31 23:07:58,808 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 23:07:58,808 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 23:07:58,808 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-03-31 23:07:58,808 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2023-03-31 23:07:58,808 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2023-03-31 23:07:58,808 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2023-03-31 23:07:58,808 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 18) the Hoare annotation is: true [2023-03-31 23:07:58,809 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2023-03-31 23:07:58,811 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-03-31 23:07:58,814 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 23:07:58,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 11:07:58 BoogieIcfgContainer [2023-03-31 23:07:58,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 23:07:58,827 INFO L158 Benchmark]: Toolchain (without parser) took 1123.30ms. Allocated memory is still 260.0MB. Free memory was 210.0MB in the beginning and 217.8MB in the end (delta: -7.8MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:07:58,827 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory was 134.1MB in the beginning and 134.0MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:07:58,828 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.25ms. Allocated memory is still 260.0MB. Free memory was 210.0MB in the beginning and 200.0MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-03-31 23:07:58,828 INFO L158 Benchmark]: Boogie Preprocessor took 38.57ms. Allocated memory is still 260.0MB. Free memory was 200.0MB in the beginning and 198.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 23:07:58,829 INFO L158 Benchmark]: RCFGBuilder took 235.40ms. Allocated memory is still 260.0MB. Free memory was 198.5MB in the beginning and 187.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 23:07:58,829 INFO L158 Benchmark]: TraceAbstraction took 677.70ms. Allocated memory is still 260.0MB. Free memory was 186.7MB in the beginning and 217.8MB in the end (delta: -31.2MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:07:58,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory was 134.1MB in the beginning and 134.0MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 165.25ms. Allocated memory is still 260.0MB. Free memory was 210.0MB in the beginning and 200.0MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.57ms. Allocated memory is still 260.0MB. Free memory was 200.0MB in the beginning and 198.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 235.40ms. Allocated memory is still 260.0MB. Free memory was 198.5MB in the beginning and 187.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 677.70ms. Allocated memory is still 260.0MB. Free memory was 186.7MB in the beginning and 217.8MB in the end (delta: -31.2MB). There was no memory consumed. 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: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29 IncrementalHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 14 mSDtfsCounter, 29 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 15 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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: 24]: Loop Invariant Derived loop invariant: i <= k RESULT: Ultimate proved your program to be correct! [2023-03-31 23:07:58,852 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...