/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/recursive/recHanoi02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:04:54,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:04:54,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:04:54,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:04:54,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:04:54,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:04:54,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:04:54,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:04:54,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:04:54,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:04:54,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:04:54,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:04:54,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:04:54,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:04:54,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:04:54,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:04:54,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:04:54,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:04:54,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:04:54,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:04:54,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:04:54,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:04:54,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:04:54,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:04:54,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:04:54,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:04:54,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:04:54,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:04:54,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:04:54,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:04:54,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:04:54,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:04:54,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:04:54,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:04:54,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:04:54,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:04:54,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:04:54,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:04:54,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:04:54,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:04:54,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:04:54,749 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 06:04:54,785 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:04:54,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:04:54,785 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:04:54,785 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:04:54,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:04:54,786 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:04:54,786 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:04:54,786 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:04:54,786 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:04:54,786 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:04:54,786 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:04:54,786 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:04:54,786 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:04:54,786 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:04:54,786 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:04:54,787 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:04:54,787 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:04:54,787 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:04:54,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:04:54,787 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:04:54,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:04:54,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:04:54,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:04:54,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:04:54,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:04:54,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:04:54,788 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:04:54,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:04:54,788 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:04:54,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:04:54,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:04:54,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:04:54,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:04:54,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:04:54,788 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:04:54,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:04:54,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:04:54,789 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:04:54,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:04:54,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:04:54,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:04:54,789 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:04:54,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:04:54,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:04:54,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:04:54,994 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:04:54,994 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:04:54,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/recHanoi02-2.c [2023-04-01 06:04:55,944 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:04:56,116 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:04:56,117 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/recHanoi02-2.c [2023-04-01 06:04:56,121 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08d709614/b2c7f33b2c984da383ebb4d0f52d978e/FLAG9e2daf98f [2023-04-01 06:04:56,131 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08d709614/b2c7f33b2c984da383ebb4d0f52d978e [2023-04-01 06:04:56,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:04:56,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:04:56,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:04:56,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:04:56,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:04:56,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:04:56" (1/1) ... [2023-04-01 06:04:56,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e3d8a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:04:56, skipping insertion in model container [2023-04-01 06:04:56,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:04:56" (1/1) ... [2023-04-01 06:04:56,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:04:56,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:04:56,248 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/recursive/recHanoi02-2.c[839,852] [2023-04-01 06:04:56,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:04:56,262 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:04:56,272 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/recursive/recHanoi02-2.c[839,852] [2023-04-01 06:04:56,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:04:56,283 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:04:56,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:04:56 WrapperNode [2023-04-01 06:04:56,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:04:56,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:04:56,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:04:56,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:04:56,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:04:56" (1/1) ... [2023-04-01 06:04:56,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:04:56" (1/1) ... [2023-04-01 06:04:56,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:04:56" (1/1) ... [2023-04-01 06:04:56,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:04:56" (1/1) ... [2023-04-01 06:04:56,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:04:56" (1/1) ... [2023-04-01 06:04:56,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:04:56" (1/1) ... [2023-04-01 06:04:56,305 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:04:56" (1/1) ... [2023-04-01 06:04:56,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:04:56" (1/1) ... [2023-04-01 06:04:56,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:04:56,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:04:56,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:04:56,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:04:56,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:04:56" (1/1) ... [2023-04-01 06:04:56,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:04:56,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:04:56,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 06:04:56,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 06:04:56,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:04:56,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:04:56,378 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:04:56,378 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2023-04-01 06:04:56,378 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:04:56,378 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:04:56,378 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:04:56,378 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:04:56,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:04:56,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 06:04:56,378 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2023-04-01 06:04:56,378 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:04:56,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:04:56,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:04:56,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:04:56,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:04:56,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:04:56,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:04:56,426 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:04:56,428 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:04:56,554 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:04:56,564 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:04:56,580 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 06:04:56,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:04:56 BoogieIcfgContainer [2023-04-01 06:04:56,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:04:56,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:04:56,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:04:56,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:04:56,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:04:56" (1/3) ... [2023-04-01 06:04:56,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2acd562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:04:56, skipping insertion in model container [2023-04-01 06:04:56,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:04:56" (2/3) ... [2023-04-01 06:04:56,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2acd562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:04:56, skipping insertion in model container [2023-04-01 06:04:56,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:04:56" (3/3) ... [2023-04-01 06:04:56,589 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2023-04-01 06:04:56,602 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:04:56,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 06:04:56,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:04:56,640 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;@3820a818, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:04:56,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 06:04:56,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 06:04:56,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-04-01 06:04:56,650 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:04:56,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:04:56,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:04:56,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:04:56,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1034040510, now seen corresponding path program 1 times [2023-04-01 06:04:56,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:04:56,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168755218] [2023-04-01 06:04:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:04:56,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:04:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:04:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:04:56,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:04:56,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168755218] [2023-04-01 06:04:56,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168755218] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:04:56,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:04:56,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:04:56,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798210774] [2023-04-01 06:04:56,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:04:56,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:04:56,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:04:56,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:04:56,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:04:56,857 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 06:04:56,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:04:56,907 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-04-01 06:04:56,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:04:56,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-04-01 06:04:56,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:04:56,914 INFO L225 Difference]: With dead ends: 33 [2023-04-01 06:04:56,914 INFO L226 Difference]: Without dead ends: 19 [2023-04-01 06:04:56,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:04:56,918 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:04:56,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 82 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:04:56,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-04-01 06:04:56,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-04-01 06:04:56,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 06:04:56,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2023-04-01 06:04:56,949 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2023-04-01 06:04:56,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:04:56,950 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2023-04-01 06:04:56,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 06:04:56,950 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2023-04-01 06:04:56,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-04-01 06:04:56,953 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:04:56,953 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:04:56,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:04:56,954 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:04:56,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:04:56,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1154242512, now seen corresponding path program 1 times [2023-04-01 06:04:56,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:04:56,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825827401] [2023-04-01 06:04:56,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:04:56,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:04:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:04:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 06:04:57,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:04:57,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825827401] [2023-04-01 06:04:57,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825827401] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:04:57,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830234709] [2023-04-01 06:04:57,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:04:57,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:04:57,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:04:57,089 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 06:04:57,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 06:04:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:04:57,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 06:04:57,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:04:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 06:04:57,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 06:04:57,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830234709] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:04:57,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 06:04:57,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2023-04-01 06:04:57,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646694108] [2023-04-01 06:04:57,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:04:57,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:04:57,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:04:57,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:04:57,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:04:57,258 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 06:04:57,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:04:57,293 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-04-01 06:04:57,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 06:04:57,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2023-04-01 06:04:57,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:04:57,294 INFO L225 Difference]: With dead ends: 19 [2023-04-01 06:04:57,294 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 06:04:57,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:04:57,296 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:04:57,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:04:57,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 06:04:57,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 06:04:57,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 06:04:57,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 06:04:57,297 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2023-04-01 06:04:57,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:04:57,297 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 06:04:57,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 06:04:57,298 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 06:04:57,298 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 06:04:57,300 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 06:04:57,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 06:04:57,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:04:57,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 06:04:57,512 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-04-01 06:04:57,512 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-04-01 06:04:57,512 INFO L899 garLoopResultBuilder]: For program point hanoiEXIT(lines 20 25) no Hoare annotation was computed. [2023-04-01 06:04:57,512 INFO L899 garLoopResultBuilder]: For program point hanoiFINAL(lines 20 25) no Hoare annotation was computed. [2023-04-01 06:04:57,512 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 20 25) the Hoare annotation is: true [2023-04-01 06:04:57,512 INFO L902 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: true [2023-04-01 06:04:57,513 INFO L899 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2023-04-01 06:04:57,513 INFO L899 garLoopResultBuilder]: For program point L21(lines 21 23) no Hoare annotation was computed. [2023-04-01 06:04:57,513 INFO L902 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: true [2023-04-01 06:04:57,513 INFO L899 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2023-04-01 06:04:57,513 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 37) no Hoare annotation was computed. [2023-04-01 06:04:57,513 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 32) no Hoare annotation was computed. [2023-04-01 06:04:57,513 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 28 39) no Hoare annotation was computed. [2023-04-01 06:04:57,513 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 28 39) no Hoare annotation was computed. [2023-04-01 06:04:57,513 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 28 39) the Hoare annotation is: true [2023-04-01 06:04:57,514 INFO L899 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2023-04-01 06:04:57,514 INFO L899 garLoopResultBuilder]: For program point L34(lines 34 38) no Hoare annotation was computed. [2023-04-01 06:04:57,514 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 06:04:57,514 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 06:04:57,514 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 06:04:57,514 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-01 06:04:57,514 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 06:04:57,514 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 06:04:57,517 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-01 06:04:57,518 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 06:04:57,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 06:04:57 BoogieIcfgContainer [2023-04-01 06:04:57,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 06:04:57,522 INFO L158 Benchmark]: Toolchain (without parser) took 1388.35ms. Allocated memory is still 294.6MB. Free memory was 255.4MB in the beginning and 184.1MB in the end (delta: 71.3MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. [2023-04-01 06:04:57,522 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 180.4MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 06:04:57,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.47ms. Allocated memory is still 294.6MB. Free memory was 254.9MB in the beginning and 245.4MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-04-01 06:04:57,523 INFO L158 Benchmark]: Boogie Preprocessor took 24.00ms. Allocated memory is still 294.6MB. Free memory was 245.4MB in the beginning and 243.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 06:04:57,523 INFO L158 Benchmark]: RCFGBuilder took 273.80ms. Allocated memory is still 294.6MB. Free memory was 243.9MB in the beginning and 232.9MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-01 06:04:57,524 INFO L158 Benchmark]: TraceAbstraction took 937.22ms. Allocated memory is still 294.6MB. Free memory was 232.3MB in the beginning and 184.1MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. [2023-04-01 06:04:57,525 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 180.4MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 149.47ms. Allocated memory is still 294.6MB. Free memory was 254.9MB in the beginning and 245.4MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.00ms. Allocated memory is still 294.6MB. Free memory was 245.4MB in the beginning and 243.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 273.80ms. Allocated memory is still 294.6MB. Free memory was 243.9MB in the beginning and 232.9MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 937.22ms. Allocated memory is still 294.6MB. Free memory was 232.3MB in the beginning and 184.1MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. 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: 37]: 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, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 121 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 37 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 87 SizeOfPredicates, 0 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-04-01 06:04:57,561 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...