/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:31:49,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:31:49,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:31:49,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:31:49,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:31:49,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:31:49,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:31:49,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:31:49,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:31:49,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:31:49,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:31:49,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:31:49,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:31:49,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:31:49,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:31:49,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:31:49,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:31:49,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:31:49,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:31:49,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:31:49,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:31:49,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:31:49,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:31:49,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:31:49,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 12:31:49,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:31:49,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:31:49,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:31:49,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:31:49,649 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:31:49,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:31:49,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:31:49,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:31:49,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:31:49,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:31:49,651 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:31:49,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:31:49,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:31:49,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:31:49,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:31:49,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:31:49,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:31:49,652 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:31:49,653 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:31:49,653 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:31:49,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:31:49,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:31:49,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:31:49,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:31:49,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:31:49,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:31:49,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:31:49,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:31:49,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:31:49,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:31:49,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:31:49,654 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:31:49,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:31:49,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:31:49,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:31:49,654 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:31:49,655 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:31:49,655 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:31:49,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:31:49,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:31:49,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:31:49,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:31:49,886 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:31:49,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2022-01-10 12:31:49,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a297cbb7/01619ab300f7437b9fe76ccc799c2f01/FLAG591dd70f0 [2022-01-10 12:31:50,275 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:31:50,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2022-01-10 12:31:50,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a297cbb7/01619ab300f7437b9fe76ccc799c2f01/FLAG591dd70f0 [2022-01-10 12:31:50,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a297cbb7/01619ab300f7437b9fe76ccc799c2f01 [2022-01-10 12:31:50,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:31:50,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:31:50,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:31:50,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:31:50,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:31:50,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:31:50" (1/1) ... [2022-01-10 12:31:50,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e73276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:50, skipping insertion in model container [2022-01-10 12:31:50,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:31:50" (1/1) ... [2022-01-10 12:31:50,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:31:50,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:31:50,889 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c[946,959] [2022-01-10 12:31:50,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:31:50,904 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:31:50,914 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c[946,959] [2022-01-10 12:31:50,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:31:50,923 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:31:50,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:50 WrapperNode [2022-01-10 12:31:50,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:31:50,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:31:50,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:31:50,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:31:50,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:50" (1/1) ... [2022-01-10 12:31:50,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:50" (1/1) ... [2022-01-10 12:31:50,943 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-01-10 12:31:50,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:31:50,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:31:50,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:31:50,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:31:50,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:50" (1/1) ... [2022-01-10 12:31:50,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:50" (1/1) ... [2022-01-10 12:31:50,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:50" (1/1) ... [2022-01-10 12:31:50,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:50" (1/1) ... [2022-01-10 12:31:50,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:50" (1/1) ... [2022-01-10 12:31:50,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:50" (1/1) ... [2022-01-10 12:31:50,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:50" (1/1) ... [2022-01-10 12:31:50,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:31:50,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:31:50,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:31:50,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:31:50,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:50" (1/1) ... [2022-01-10 12:31:50,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:31:50,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:31:50,986 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) [2022-01-10 12:31:50,995 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 [2022-01-10 12:31:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:31:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:31:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-01-10 12:31:51,022 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-01-10 12:31:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-01-10 12:31:51,022 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-01-10 12:31:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:31:51,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:31:51,069 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:31:51,070 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:31:51,179 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:31:51,184 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:31:51,184 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 12:31:51,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:31:51 BoogieIcfgContainer [2022-01-10 12:31:51,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:31:51,186 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:31:51,186 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:31:51,187 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:31:51,189 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:31:51" (1/1) ... [2022-01-10 12:31:51,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:31:51 BasicIcfg [2022-01-10 12:31:51,242 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:31:51,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:31:51,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:31:51,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:31:51,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:31:50" (1/4) ... [2022-01-10 12:31:51,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4131b7ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:31:51, skipping insertion in model container [2022-01-10 12:31:51,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:50" (2/4) ... [2022-01-10 12:31:51,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4131b7ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:31:51, skipping insertion in model container [2022-01-10 12:31:51,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:31:51" (3/4) ... [2022-01-10 12:31:51,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4131b7ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:31:51, skipping insertion in model container [2022-01-10 12:31:51,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:31:51" (4/4) ... [2022-01-10 12:31:51,259 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_2-2.cTransformedIcfg [2022-01-10 12:31:51,262 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:31:51,262 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 12:31:51,290 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:31:51,299 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:31:51,299 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 12:31:51,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-10 12:31:51,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 12:31:51,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:31:51,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:31:51,311 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:31:51,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:31:51,314 INFO L85 PathProgramCache]: Analyzing trace with hash 409070419, now seen corresponding path program 1 times [2022-01-10 12:31:51,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:31:51,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438737998] [2022-01-10 12:31:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:31:51,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:31:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:51,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 12:31:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:51,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:31:51,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:31:51,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438737998] [2022-01-10 12:31:51,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438737998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:31:51,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:31:51,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:31:51,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325604787] [2022-01-10 12:31:51,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:31:51,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:31:51,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:31:51,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:31:51,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:31:51,631 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 12:31:51,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:31:51,708 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-01-10 12:31:51,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:31:51,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-01-10 12:31:51,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:31:51,719 INFO L225 Difference]: With dead ends: 37 [2022-01-10 12:31:51,719 INFO L226 Difference]: Without dead ends: 25 [2022-01-10 12:31:51,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:31:51,724 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:31:51,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 82 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:31:51,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-10 12:31:51,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-10 12:31:51,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-10 12:31:51,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-01-10 12:31:51,756 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 10 [2022-01-10 12:31:51,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:31:51,757 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-01-10 12:31:51,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 12:31:51,758 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-01-10 12:31:51,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 12:31:51,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:31:51,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:31:51,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:31:51,762 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:31:51,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:31:51,763 INFO L85 PathProgramCache]: Analyzing trace with hash 697486659, now seen corresponding path program 1 times [2022-01-10 12:31:51,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:31:51,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802062291] [2022-01-10 12:31:51,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:31:51,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:31:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:51,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 12:31:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:31:51,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:31:51,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802062291] [2022-01-10 12:31:51,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802062291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:31:51,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:31:51,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:31:51,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731733100] [2022-01-10 12:31:51,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:31:51,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:31:51,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:31:51,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:31:51,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:31:51,868 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 12:31:51,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:31:51,924 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2022-01-10 12:31:51,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:31:51,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-01-10 12:31:51,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:31:51,926 INFO L225 Difference]: With dead ends: 31 [2022-01-10 12:31:51,926 INFO L226 Difference]: Without dead ends: 27 [2022-01-10 12:31:51,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:31:51,931 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:31:51,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 72 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:31:51,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-10 12:31:51,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-01-10 12:31:51,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-10 12:31:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-01-10 12:31:51,939 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 11 [2022-01-10 12:31:51,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:31:51,939 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-01-10 12:31:51,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 12:31:51,940 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-01-10 12:31:51,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 12:31:51,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:31:51,941 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:31:51,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:31:51,941 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:31:51,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:31:51,941 INFO L85 PathProgramCache]: Analyzing trace with hash 63510830, now seen corresponding path program 1 times [2022-01-10 12:31:51,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:31:51,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748264058] [2022-01-10 12:31:51,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:31:51,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:31:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:52,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 12:31:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:52,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 12:31:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:52,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-10 12:31:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:52,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 12:31:52,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:31:52,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748264058] [2022-01-10 12:31:52,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748264058] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:31:52,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108835412] [2022-01-10 12:31:52,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:31:52,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:31:52,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:31:52,109 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) [2022-01-10 12:31:52,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 12:31:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:52,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 12:31:52,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:31:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 12:31:52,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:31:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 12:31:52,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108835412] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:31:52,757 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:31:52,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-01-10 12:31:52,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076128439] [2022-01-10 12:31:52,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:31:52,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 12:31:52,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:31:52,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 12:31:52,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:31:52,761 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 13 states, 10 states have (on average 2.5) internal successors, (25), 12 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2022-01-10 12:31:52,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:31:52,964 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2022-01-10 12:31:52,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:31:52,965 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.5) internal successors, (25), 12 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) Word has length 22 [2022-01-10 12:31:52,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:31:52,966 INFO L225 Difference]: With dead ends: 37 [2022-01-10 12:31:52,966 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 12:31:52,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:31:52,967 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:31:52,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 96 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:31:52,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 12:31:52,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2022-01-10 12:31:52,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-01-10 12:31:52,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2022-01-10 12:31:52,972 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 22 [2022-01-10 12:31:52,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:31:52,973 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2022-01-10 12:31:52,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.5) internal successors, (25), 12 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2022-01-10 12:31:52,973 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2022-01-10 12:31:52,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 12:31:52,974 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:31:52,974 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:31:52,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 12:31:53,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:31:53,191 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:31:53,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:31:53,191 INFO L85 PathProgramCache]: Analyzing trace with hash -992157507, now seen corresponding path program 1 times [2022-01-10 12:31:53,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:31:53,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511098540] [2022-01-10 12:31:53,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:31:53,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:31:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:53,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 12:31:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:53,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 12:31:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:53,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-10 12:31:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:53,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:31:53,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:31:53,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511098540] [2022-01-10 12:31:53,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511098540] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:31:53,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860666390] [2022-01-10 12:31:53,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:31:53,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:31:53,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:31:53,422 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:31:53,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 12:31:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:53,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 12:31:53,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:31:53,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:31:53,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:31:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:31:54,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860666390] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:31:54,117 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:31:54,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-10 12:31:54,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882346255] [2022-01-10 12:31:54,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:31:54,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 12:31:54,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:31:54,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 12:31:54,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-01-10 12:31:54,118 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 8 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 12:31:54,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:31:54,162 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2022-01-10 12:31:54,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:31:54,163 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 8 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) Word has length 23 [2022-01-10 12:31:54,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:31:54,164 INFO L225 Difference]: With dead ends: 42 [2022-01-10 12:31:54,164 INFO L226 Difference]: Without dead ends: 38 [2022-01-10 12:31:54,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-01-10 12:31:54,165 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:31:54,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 361 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:31:54,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-10 12:31:54,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2022-01-10 12:31:54,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (17), 8 states have call predecessors, (17), 7 states have call successors, (17) [2022-01-10 12:31:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 47 transitions. [2022-01-10 12:31:54,170 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 47 transitions. Word has length 23 [2022-01-10 12:31:54,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:31:54,170 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 47 transitions. [2022-01-10 12:31:54,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 8 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 12:31:54,171 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 47 transitions. [2022-01-10 12:31:54,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 12:31:54,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:31:54,171 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:31:54,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 12:31:54,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-10 12:31:54,372 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:31:54,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:31:54,373 INFO L85 PathProgramCache]: Analyzing trace with hash -934457306, now seen corresponding path program 1 times [2022-01-10 12:31:54,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:31:54,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322890108] [2022-01-10 12:31:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:31:54,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:31:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:54,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 12:31:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:54,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 12:31:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:54,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-10 12:31:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 12:31:54,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:31:54,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322890108] [2022-01-10 12:31:54,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322890108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:31:54,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:31:54,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:31:54,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389025544] [2022-01-10 12:31:54,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:31:54,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:31:54,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:31:54,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:31:54,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:31:54,437 INFO L87 Difference]: Start difference. First operand 32 states and 47 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 12:31:54,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:31:54,506 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2022-01-10 12:31:54,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:31:54,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-01-10 12:31:54,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:31:54,507 INFO L225 Difference]: With dead ends: 42 [2022-01-10 12:31:54,507 INFO L226 Difference]: Without dead ends: 38 [2022-01-10 12:31:54,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:31:54,508 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:31:54,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 86 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:31:54,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-10 12:31:54,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2022-01-10 12:31:54,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (17), 8 states have call predecessors, (17), 7 states have call successors, (17) [2022-01-10 12:31:54,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 47 transitions. [2022-01-10 12:31:54,513 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 47 transitions. Word has length 24 [2022-01-10 12:31:54,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:31:54,513 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 47 transitions. [2022-01-10 12:31:54,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 12:31:54,513 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 47 transitions. [2022-01-10 12:31:54,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 12:31:54,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:31:54,514 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:31:54,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:31:54,515 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:31:54,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:31:54,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1087350369, now seen corresponding path program 1 times [2022-01-10 12:31:54,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:31:54,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204505871] [2022-01-10 12:31:54,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:31:54,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:31:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:54,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 12:31:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:54,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 12:31:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:54,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-10 12:31:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:54,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 12:31:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:54,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-10 12:31:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 12:31:54,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:31:54,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204505871] [2022-01-10 12:31:54,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204505871] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:31:54,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843102684] [2022-01-10 12:31:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:31:54,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:31:54,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:31:54,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:31:54,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 12:31:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:31:54,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 12:31:54,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:31:54,808 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 12:31:54,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:31:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 12:31:55,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843102684] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:31:55,183 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:31:55,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-10 12:31:55,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354431101] [2022-01-10 12:31:55,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:31:55,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 12:31:55,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:31:55,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 12:31:55,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-01-10 12:31:55,185 INFO L87 Difference]: Start difference. First operand 32 states and 47 transitions. Second operand has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 17 states have internal predecessors, (38), 7 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2022-01-10 12:31:55,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:31:55,438 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2022-01-10 12:31:55,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 12:31:55,439 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 17 states have internal predecessors, (38), 7 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) Word has length 35 [2022-01-10 12:31:55,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:31:55,439 INFO L225 Difference]: With dead ends: 42 [2022-01-10 12:31:55,439 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 12:31:55,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-01-10 12:31:55,440 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:31:55,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 136 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:31:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 12:31:55,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 12:31:55,441 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) [2022-01-10 12:31:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 12:31:55,441 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2022-01-10 12:31:55,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:31:55,441 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 12:31:55,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 17 states have internal predecessors, (38), 7 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2022-01-10 12:31:55,442 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 12:31:55,442 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 12:31:55,444 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 12:31:55,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 12:31:55,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:31:55,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 12:31:55,740 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-10 12:31:55,740 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-10 12:31:55,740 INFO L854 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (and (<= |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int| 2) (<= 2 |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int|)) [2022-01-10 12:31:55,740 INFO L858 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2022-01-10 12:31:55,740 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2022-01-10 12:31:55,741 INFO L858 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-01-10 12:31:55,741 INFO L858 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2022-01-10 12:31:55,741 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 41) no Hoare annotation was computed. [2022-01-10 12:31:55,741 INFO L854 garLoopResultBuilder]: At program point L43(lines 37 44) the Hoare annotation is: (and (<= |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int| 2) (<= 2 |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int|)) [2022-01-10 12:31:55,741 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-10 12:31:55,741 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-10 12:31:55,741 INFO L854 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (and (<= |fibo2_fibo2_#in~nInt| fibo2_fibo2_~nInt) (<= fibo2_fibo2_~nInt |fibo2_fibo2_#in~nInt|) (not (< (* 2 (mod fibo2_fibo2_~nInt 2147483648)) (+ fibo2_fibo2_~nInt 1))) (< 1 |fibo2_fibo2_#in~nInt|)) [2022-01-10 12:31:55,741 INFO L858 garLoopResultBuilder]: For program point L25-2(line 25) no Hoare annotation was computed. [2022-01-10 12:31:55,741 INFO L861 garLoopResultBuilder]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true [2022-01-10 12:31:55,741 INFO L858 garLoopResultBuilder]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2022-01-10 12:31:55,741 INFO L858 garLoopResultBuilder]: For program point L20(lines 20 26) no Hoare annotation was computed. [2022-01-10 12:31:55,741 INFO L858 garLoopResultBuilder]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2022-01-10 12:31:55,741 INFO L858 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2022-01-10 12:31:55,741 INFO L854 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= |fibo2_fibo2_#in~nInt| fibo2_fibo2_~nInt) (<= fibo2_fibo2_~nInt |fibo2_fibo2_#in~nInt|) (not (< (* 2 (mod fibo2_fibo2_~nInt 2147483648)) (+ fibo2_fibo2_~nInt 1))) (< 1 |fibo2_fibo2_#in~nInt|)) [2022-01-10 12:31:55,742 INFO L861 garLoopResultBuilder]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true [2022-01-10 12:31:55,742 INFO L858 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2022-01-10 12:31:55,742 INFO L858 garLoopResultBuilder]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2022-01-10 12:31:55,742 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2022-01-10 12:31:55,742 INFO L858 garLoopResultBuilder]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2022-01-10 12:31:55,742 INFO L854 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: (= (+ (* (- 1) fibo1_fibo1_~nInt) |fibo1_fibo1_#in~nInt|) 0) [2022-01-10 12:31:55,742 INFO L854 garLoopResultBuilder]: At program point L15-1(line 15) the Hoare annotation is: (let ((.cse0 (= fibo1_fibo1_~nInt |fibo1_fibo1_#in~nInt|))) (or (and .cse0 (or (<= |fibo1_fibo1_#in~nInt| 1) (<= 3 |fibo1_fibo1_#in~nInt|))) (and .cse0 (<= |fibo1_fibo1_#t~ret4Int| 1) (<= 1 |fibo1_fibo1_#t~ret4Int|)))) [2022-01-10 12:31:55,742 INFO L858 garLoopResultBuilder]: For program point L15-2(line 15) no Hoare annotation was computed. [2022-01-10 12:31:55,744 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-01-10 12:31:55,745 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 12:31:55,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:31:55 BasicIcfg [2022-01-10 12:31:55,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 12:31:55,756 INFO L158 Benchmark]: Toolchain (without parser) took 5027.70ms. Allocated memory was 216.0MB in the beginning and 280.0MB in the end (delta: 64.0MB). Free memory was 188.4MB in the beginning and 139.8MB in the end (delta: 48.6MB). Peak memory consumption was 112.6MB. Max. memory is 8.0GB. [2022-01-10 12:31:55,756 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 216.0MB. Free memory is still 175.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 12:31:55,756 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.84ms. Allocated memory is still 216.0MB. Free memory was 188.1MB in the beginning and 187.6MB in the end (delta: 460.8kB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-01-10 12:31:55,756 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.35ms. Allocated memory is still 216.0MB. Free memory was 187.1MB in the beginning and 185.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 12:31:55,757 INFO L158 Benchmark]: Boogie Preprocessor took 12.26ms. Allocated memory is still 216.0MB. Free memory was 185.9MB in the beginning and 184.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 12:31:55,757 INFO L158 Benchmark]: RCFGBuilder took 228.70ms. Allocated memory is still 216.0MB. Free memory was 184.9MB in the beginning and 175.0MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-10 12:31:55,757 INFO L158 Benchmark]: IcfgTransformer took 56.17ms. Allocated memory is still 216.0MB. Free memory was 175.0MB in the beginning and 171.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-01-10 12:31:55,757 INFO L158 Benchmark]: TraceAbstraction took 4503.74ms. Allocated memory was 216.0MB in the beginning and 280.0MB in the end (delta: 64.0MB). Free memory was 170.8MB in the beginning and 139.8MB in the end (delta: 31.0MB). Peak memory consumption was 96.1MB. Max. memory is 8.0GB. [2022-01-10 12:31:55,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 216.0MB. Free memory is still 175.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 182.84ms. Allocated memory is still 216.0MB. Free memory was 188.1MB in the beginning and 187.6MB in the end (delta: 460.8kB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.35ms. Allocated memory is still 216.0MB. Free memory was 187.1MB in the beginning and 185.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.26ms. Allocated memory is still 216.0MB. Free memory was 185.9MB in the beginning and 184.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 228.70ms. Allocated memory is still 216.0MB. Free memory was 184.9MB in the beginning and 175.0MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 56.17ms. Allocated memory is still 216.0MB. Free memory was 175.0MB in the beginning and 171.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 4503.74ms. Allocated memory was 216.0MB in the beginning and 280.0MB in the end (delta: 64.0MB). Free memory was 170.8MB in the beginning and 139.8MB in the end (delta: 31.0MB). Peak memory consumption was 96.1MB. 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: 41]: 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 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.5s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 103 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 82 mSDsluCounter, 833 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 693 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 525 IncrementalHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 140 mSDtfsCounter, 525 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 159 SyntacticMatches, 11 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=4, InterpolantAutomatonStates: 45, 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, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 23 PreInvPairs, 30 NumberOfFragments, 85 HoareAnnotationTreeSize, 23 FomulaSimplifications, 45 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 121 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 205 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 273 ConstructedInterpolants, 0 QuantifiedInterpolants, 1664 SizeOfPredicates, 7 NumberOfNonLiveVariables, 497 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 59/80 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: 37]: Loop Invariant Derived loop invariant: ~bvule32(2bv32, x) && ~bvule32(x, 2bv32) RESULT: Ultimate proved your program to be correct! [2022-01-10 12:31:55,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...