/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/bitvector/num_conversion_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 21:05:52,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 21:05:52,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 21:05:52,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 21:05:52,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 21:05:52,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 21:05:52,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 21:05:52,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 21:05:52,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 21:05:52,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 21:05:52,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 21:05:52,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 21:05:52,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 21:05:52,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 21:05:52,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 21:05:52,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 21:05:52,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 21:05:52,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 21:05:52,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 21:05:52,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 21:05:52,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 21:05:52,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 21:05:52,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 21:05:52,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 21:05:52,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 21:05:52,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 21:05:52,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 21:05:52,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 21:05:52,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 21:05:52,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 21:05:52,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 21:05:52,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 21:05:52,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 21:05:52,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 21:05:52,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 21:05:52,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 21:05:52,071 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 21:05:52,098 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 21:05:52,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 21:05:52,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 21:05:52,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 21:05:52,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 21:05:52,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 21:05:52,099 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 21:05:52,099 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 21:05:52,099 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 21:05:52,099 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 21:05:52,100 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 21:05:52,100 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 21:05:52,100 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 21:05:52,100 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 21:05:52,100 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 21:05:52,101 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 21:05:52,101 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 21:05:52,101 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 21:05:52,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 21:05:52,101 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 21:05:52,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 21:05:52,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 21:05:52,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 21:05:52,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 21:05:52,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 21:05:52,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 21:05:52,102 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 21:05:52,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 21:05:52,102 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 21:05:52,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 21:05:52,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 21:05:52,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 21:05:52,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 21:05:52,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 21:05:52,103 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 21:05:52,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 21:05:52,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 21:05:52,103 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 21:05:52,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 21:05:52,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 21:05:52,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 21:05:52,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 21:05:52,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 21:05:52,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 21:05:52,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 21:05:52,323 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 21:05:52,324 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 21:05:52,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/num_conversion_2.c [2023-03-31 21:05:53,366 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 21:05:53,527 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 21:05:53,528 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c [2023-03-31 21:05:53,532 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d425a3772/43e7c0c0a2294eb2865933b102bea403/FLAG820bcf2ec [2023-03-31 21:05:53,550 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d425a3772/43e7c0c0a2294eb2865933b102bea403 [2023-03-31 21:05:53,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 21:05:53,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 21:05:53,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 21:05:53,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 21:05:53,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 21:05:53,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:05:53" (1/1) ... [2023-03-31 21:05:53,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c4b67f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:53, skipping insertion in model container [2023-03-31 21:05:53,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:05:53" (1/1) ... [2023-03-31 21:05:53,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 21:05:53,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 21:05:53,667 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/bitvector/num_conversion_2.c[685,698] [2023-03-31 21:05:53,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 21:05:53,683 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 21:05:53,691 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/bitvector/num_conversion_2.c[685,698] [2023-03-31 21:05:53,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 21:05:53,704 INFO L208 MainTranslator]: Completed translation [2023-03-31 21:05:53,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:53 WrapperNode [2023-03-31 21:05:53,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 21:05:53,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 21:05:53,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 21:05:53,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 21:05:53,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:53" (1/1) ... [2023-03-31 21:05:53,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:53" (1/1) ... [2023-03-31 21:05:53,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:53" (1/1) ... [2023-03-31 21:05:53,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:53" (1/1) ... [2023-03-31 21:05:53,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:53" (1/1) ... [2023-03-31 21:05:53,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:53" (1/1) ... [2023-03-31 21:05:53,737 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:53" (1/1) ... [2023-03-31 21:05:53,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:53" (1/1) ... [2023-03-31 21:05:53,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 21:05:53,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 21:05:53,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 21:05:53,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 21:05:53,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:53" (1/1) ... [2023-03-31 21:05:53,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 21:05:53,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:05:53,770 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 21:05:53,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 21:05:53,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 21:05:53,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 21:05:53,803 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 21:05:53,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 21:05:53,803 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 21:05:53,804 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 21:05:53,804 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 21:05:53,804 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 21:05:53,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 21:05:53,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-03-31 21:05:53,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 21:05:53,804 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 21:05:53,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 21:05:53,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 21:05:53,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 21:05:53,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 21:05:53,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 21:05:53,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 21:05:53,855 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 21:05:53,857 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 21:05:54,002 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 21:05:54,058 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 21:05:54,058 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 21:05:54,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:05:54 BoogieIcfgContainer [2023-03-31 21:05:54,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 21:05:54,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 21:05:54,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 21:05:54,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 21:05:54,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 09:05:53" (1/3) ... [2023-03-31 21:05:54,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517b3e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:05:54, skipping insertion in model container [2023-03-31 21:05:54,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:05:53" (2/3) ... [2023-03-31 21:05:54,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517b3e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:05:54, skipping insertion in model container [2023-03-31 21:05:54,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:05:54" (3/3) ... [2023-03-31 21:05:54,065 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2023-03-31 21:05:54,076 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 21:05:54,076 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 21:05:54,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 21:05:54,116 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;@46ed1f64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 21:05:54,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 21:05:54,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 21:05:54,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-03-31 21:05:54,124 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:05:54,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:05:54,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:05:54,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:05:54,129 INFO L85 PathProgramCache]: Analyzing trace with hash -227741465, now seen corresponding path program 1 times [2023-03-31 21:05:54,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:05:54,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705330604] [2023-03-31 21:05:54,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:05:54,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:05:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:05:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:05:54,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:05:54,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705330604] [2023-03-31 21:05:54,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705330604] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:05:54,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:05:54,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 21:05:54,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009134310] [2023-03-31 21:05:54,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:05:54,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 21:05:54,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:05:54,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 21:05:54,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 21:05:54,359 INFO L87 Difference]: Start difference. First operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:05:54,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:05:54,416 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2023-03-31 21:05:54,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 21:05:54,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-03-31 21:05:54,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:05:54,421 INFO L225 Difference]: With dead ends: 29 [2023-03-31 21:05:54,422 INFO L226 Difference]: Without dead ends: 12 [2023-03-31 21:05:54,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 21:05:54,426 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 21:05:54,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 21:05:54,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-03-31 21:05:54,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-03-31 21:05:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:05:54,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-03-31 21:05:54,483 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2023-03-31 21:05:54,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:05:54,483 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-03-31 21:05:54,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:05:54,483 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-03-31 21:05:54,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 21:05:54,484 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:05:54,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:05:54,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 21:05:54,484 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:05:54,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:05:54,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1714978187, now seen corresponding path program 1 times [2023-03-31 21:05:54,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:05:54,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065693915] [2023-03-31 21:05:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:05:54,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:05:54,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:05:54,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:05:54,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:05:54,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065693915] [2023-03-31 21:05:54,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065693915] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 21:05:54,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435517451] [2023-03-31 21:05:54,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:05:54,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:05:54,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:05:54,652 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) [2023-03-31 21:05:54,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 21:05:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:05:54,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2023-03-31 21:05:54,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 21:05:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:05:54,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 21:05:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:05:54,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435517451] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 21:05:54,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1584731577] [2023-03-31 21:05:54,814 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-03-31 21:05:54,815 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 21:05:54,818 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 21:05:54,822 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 21:05:54,823 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 21:05:54,893 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 21:05:55,057 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2023-03-31 21:05:55,081 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 21:05:55,089 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 21:05:55,337 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '152#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 21:05:55,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 21:05:55,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 21:05:55,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-03-31 21:05:55,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344223560] [2023-03-31 21:05:55,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 21:05:55,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 21:05:55,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:05:55,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 21:05:55,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-03-31 21:05:55,340 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:05:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:05:55,381 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2023-03-31 21:05:55,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 21:05:55,382 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-03-31 21:05:55,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:05:55,383 INFO L225 Difference]: With dead ends: 20 [2023-03-31 21:05:55,383 INFO L226 Difference]: Without dead ends: 15 [2023-03-31 21:05:55,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-03-31 21:05:55,385 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 21:05:55,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 21:05:55,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-03-31 21:05:55,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-03-31 21:05:55,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:05:55,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-03-31 21:05:55,391 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2023-03-31 21:05:55,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:05:55,391 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-03-31 21:05:55,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:05:55,391 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-03-31 21:05:55,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-03-31 21:05:55,392 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:05:55,392 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:05:55,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-31 21:05:55,597 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 [2023-03-31 21:05:55,597 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:05:55,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:05:55,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1329396199, now seen corresponding path program 2 times [2023-03-31 21:05:55,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:05:55,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691001442] [2023-03-31 21:05:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:05:55,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:05:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:05:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:05:55,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:05:55,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691001442] [2023-03-31 21:05:55,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691001442] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 21:05:55,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629045455] [2023-03-31 21:05:55,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 21:05:55,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:05:55,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:05:55,826 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 21:05:55,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 21:05:55,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-03-31 21:05:55,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 21:05:55,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2023-03-31 21:05:55,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 21:05:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:05:55,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 21:05:56,074 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:05:56,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629045455] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 21:05:56,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [177040352] [2023-03-31 21:05:56,077 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-03-31 21:05:56,077 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 21:05:56,077 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 21:05:56,078 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 21:05:56,079 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 21:05:56,109 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 21:05:56,183 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2023-03-31 21:05:56,220 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 21:05:56,225 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 21:05:56,486 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '318#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 21:05:56,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 21:05:56,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 21:05:56,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-03-31 21:05:56,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418046007] [2023-03-31 21:05:56,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 21:05:56,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 21:05:56,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:05:56,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 21:05:56,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2023-03-31 21:05:56,488 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:05:56,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:05:56,792 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2023-03-31 21:05:56,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 21:05:56,793 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-03-31 21:05:56,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:05:56,793 INFO L225 Difference]: With dead ends: 26 [2023-03-31 21:05:56,793 INFO L226 Difference]: Without dead ends: 21 [2023-03-31 21:05:56,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=586, Unknown=0, NotChecked=0, Total=756 [2023-03-31 21:05:56,794 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 21:05:56,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 43 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 21:05:56,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-03-31 21:05:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-03-31 21:05:56,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:05:56,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-03-31 21:05:56,800 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2023-03-31 21:05:56,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:05:56,801 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-03-31 21:05:56,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:05:56,801 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-03-31 21:05:56,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-03-31 21:05:56,801 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:05:56,801 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:05:56,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-03-31 21:05:57,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-03-31 21:05:57,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:05:57,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:05:57,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1122009831, now seen corresponding path program 3 times [2023-03-31 21:05:57,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:05:57,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312331005] [2023-03-31 21:05:57,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:05:57,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:05:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 21:05:57,103 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 21:05:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 21:05:57,227 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 21:05:57,227 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 21:05:57,227 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 21:05:57,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 21:05:57,231 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-03-31 21:05:57,234 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 21:05:57,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 09:05:57 BoogieIcfgContainer [2023-03-31 21:05:57,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 21:05:57,259 INFO L158 Benchmark]: Toolchain (without parser) took 3706.64ms. Allocated memory was 189.8MB in the beginning and 278.9MB in the end (delta: 89.1MB). Free memory was 157.3MB in the beginning and 167.3MB in the end (delta: -10.0MB). Peak memory consumption was 80.1MB. Max. memory is 8.0GB. [2023-03-31 21:05:57,259 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory is still 144.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 21:05:57,260 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.79ms. Allocated memory is still 189.8MB. Free memory was 157.3MB in the beginning and 146.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 21:05:57,262 INFO L158 Benchmark]: Boogie Preprocessor took 33.24ms. Allocated memory is still 189.8MB. Free memory was 146.8MB in the beginning and 145.7MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-03-31 21:05:57,262 INFO L158 Benchmark]: RCFGBuilder took 321.47ms. Allocated memory is still 189.8MB. Free memory was 145.7MB in the beginning and 129.0MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-03-31 21:05:57,262 INFO L158 Benchmark]: TraceAbstraction took 3196.98ms. Allocated memory was 189.8MB in the beginning and 278.9MB in the end (delta: 89.1MB). Free memory was 128.4MB in the beginning and 167.3MB in the end (delta: -38.9MB). Peak memory consumption was 50.8MB. Max. memory is 8.0GB. [2023-03-31 21:05:57,267 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 189.8MB. Free memory is still 144.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 149.79ms. Allocated memory is still 189.8MB. Free memory was 157.3MB in the beginning and 146.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.24ms. Allocated memory is still 189.8MB. Free memory was 146.8MB in the beginning and 145.7MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 321.47ms. Allocated memory is still 189.8MB. Free memory was 145.7MB in the beginning and 129.0MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 3196.98ms. Allocated memory was 189.8MB in the beginning and 278.9MB in the end (delta: 89.1MB). Free memory was 128.4MB in the beginning and 167.3MB in the end (delta: -38.9MB). Peak memory consumption was 50.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 31, overapproximation of bitwiseAnd at line 32. Possible FailurePath: [L24] unsigned char x = __VERIFIER_nondet_uchar(); [L25] unsigned char y; [L26] unsigned char c; [L28] y = 0 [L29] c = 0 VAL [c=0, x=254, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] EXPR ((unsigned char)1) << c [L31] unsigned char i = ((unsigned char)1) << c; [L32] EXPR x & i [L32] unsigned char bit = x & i; [L33] COND FALSE !(bit != (unsigned char)0) [L36] c = c + ((unsigned char)1) VAL [bit=0, c=1, i=1, x=254, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] EXPR ((unsigned char)1) << c [L31] unsigned char i = ((unsigned char)1) << c; [L32] EXPR x & i [L32] unsigned char bit = x & i; [L33] COND TRUE bit != (unsigned char)0 [L34] y = y + i [L36] c = c + ((unsigned char)1) VAL [bit=254, c=2, i=255, x=254, y=255] [L30] COND TRUE c < (unsigned char)8 [L31] EXPR ((unsigned char)1) << c [L31] unsigned char i = ((unsigned char)1) << c; [L32] EXPR x & i [L32] unsigned char bit = x & i; [L33] COND FALSE !(bit != (unsigned char)0) [L36] c = c + ((unsigned char)1) VAL [bit=0, c=3, i=0, x=254, y=255] [L30] COND TRUE c < (unsigned char)8 [L31] EXPR ((unsigned char)1) << c [L31] unsigned char i = ((unsigned char)1) << c; [L32] EXPR x & i [L32] unsigned char bit = x & i; [L33] COND FALSE !(bit != (unsigned char)0) [L36] c = c + ((unsigned char)1) VAL [bit=0, c=4, i=0, x=254, y=255] [L30] COND TRUE c < (unsigned char)8 [L31] EXPR ((unsigned char)1) << c [L31] unsigned char i = ((unsigned char)1) << c; [L32] EXPR x & i [L32] unsigned char bit = x & i; [L33] COND FALSE !(bit != (unsigned char)0) [L36] c = c + ((unsigned char)1) VAL [bit=0, c=5, i=0, x=254, y=255] [L30] COND TRUE c < (unsigned char)8 [L31] EXPR ((unsigned char)1) << c [L31] unsigned char i = ((unsigned char)1) << c; [L32] EXPR x & i [L32] unsigned char bit = x & i; [L33] COND FALSE !(bit != (unsigned char)0) [L36] c = c + ((unsigned char)1) VAL [bit=0, c=6, i=2, x=254, y=255] [L30] COND TRUE c < (unsigned char)8 [L31] EXPR ((unsigned char)1) << c [L31] unsigned char i = ((unsigned char)1) << c; [L32] EXPR x & i [L32] unsigned char bit = x & i; [L33] COND FALSE !(bit != (unsigned char)0) [L36] c = c + ((unsigned char)1) VAL [bit=0, c=7, i=0, x=254, y=255] [L30] COND TRUE c < (unsigned char)8 [L31] EXPR ((unsigned char)1) << c [L31] unsigned char i = ((unsigned char)1) << c; [L32] EXPR x & i [L32] unsigned char bit = x & i; [L33] COND FALSE !(bit != (unsigned char)0) [L36] c = c + ((unsigned char)1) VAL [bit=0, c=8, i=0, x=254, y=255] [L30] COND FALSE !(c < (unsigned char)8) VAL [bit=0, c=8, i=0, x=254, y=255] [L38] CALL __VERIFIER_assert(x == y) VAL [\old(cond)=0] [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 4, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 61 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57 IncrementalHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 29 mSDtfsCounter, 57 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=3, InterpolantAutomatonStates: 23, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 224 SizeOfPredicates, 4 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-03-31 21:05:57,281 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...