/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/array-crafted/xor5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 02:51:55,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 02:51:55,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 02:51:55,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 02:51:55,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 02:51:55,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 02:51:55,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 02:51:55,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 02:51:55,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 02:51:55,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 02:51:55,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 02:51:55,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 02:51:55,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 02:51:55,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 02:51:55,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 02:51:55,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 02:51:55,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 02:51:55,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 02:51:55,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 02:51:55,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 02:51:55,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 02:51:55,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 02:51:55,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 02:51:55,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 02:51:55,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 02:51:55,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 02:51:55,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 02:51:55,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 02:51:55,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 02:51:55,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 02:51:55,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 02:51:55,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 02:51:55,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 02:51:55,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 02:51:55,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 02:51:55,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 02:51:55,796 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 02:51:55,822 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 02:51:55,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 02:51:55,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 02:51:55,822 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 02:51:55,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 02:51:55,823 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 02:51:55,823 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 02:51:55,823 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 02:51:55,823 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 02:51:55,823 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 02:51:55,824 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 02:51:55,824 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 02:51:55,824 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 02:51:55,824 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 02:51:55,824 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 02:51:55,824 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 02:51:55,824 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 02:51:55,824 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 02:51:55,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 02:51:55,825 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 02:51:55,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 02:51:55,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 02:51:55,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 02:51:55,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 02:51:55,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 02:51:55,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 02:51:55,825 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 02:51:55,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 02:51:55,825 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 02:51:55,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 02:51:55,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 02:51:55,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 02:51:55,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 02:51:55,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 02:51:55,826 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 02:51:55,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 02:51:55,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 02:51:55,826 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 02:51:55,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 02:51:55,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 02:51:55,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 02:51:55,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 02:51:55,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 02:51:56,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 02:51:56,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 02:51:56,016 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 02:51:56,018 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 02:51:56,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/xor5.i [2023-04-01 02:51:56,950 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 02:51:57,059 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 02:51:57,059 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/xor5.i [2023-04-01 02:51:57,063 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78e4fcf1f/5d3a992bfe224d78a74f4f44bc4a3096/FLAGd28592790 [2023-04-01 02:51:57,075 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78e4fcf1f/5d3a992bfe224d78a74f4f44bc4a3096 [2023-04-01 02:51:57,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 02:51:57,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 02:51:57,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 02:51:57,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 02:51:57,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 02:51:57,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 02:51:57" (1/1) ... [2023-04-01 02:51:57,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f45a47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 02:51:57, skipping insertion in model container [2023-04-01 02:51:57,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 02:51:57" (1/1) ... [2023-04-01 02:51:57,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 02:51:57,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 02:51:57,219 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/array-crafted/xor5.i[1364,1377] [2023-04-01 02:51:57,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 02:51:57,231 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 02:51:57,259 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/array-crafted/xor5.i[1364,1377] [2023-04-01 02:51:57,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 02:51:57,271 INFO L208 MainTranslator]: Completed translation [2023-04-01 02:51:57,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 02:51:57 WrapperNode [2023-04-01 02:51:57,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 02:51:57,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 02:51:57,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 02:51:57,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 02:51:57,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 02:51:57" (1/1) ... [2023-04-01 02:51:57,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 02:51:57" (1/1) ... [2023-04-01 02:51:57,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 02:51:57" (1/1) ... [2023-04-01 02:51:57,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 02:51:57" (1/1) ... [2023-04-01 02:51:57,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 02:51:57" (1/1) ... [2023-04-01 02:51:57,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 02:51:57" (1/1) ... [2023-04-01 02:51:57,299 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 02:51:57" (1/1) ... [2023-04-01 02:51:57,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 02:51:57" (1/1) ... [2023-04-01 02:51:57,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 02:51:57,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 02:51:57,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 02:51:57,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 02:51:57,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 02:51:57" (1/1) ... [2023-04-01 02:51:57,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 02:51:57,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 02:51:57,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 02:51:57,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 02:51:57,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 02:51:57,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 02:51:57,356 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 02:51:57,356 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2023-04-01 02:51:57,356 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 02:51:57,356 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 02:51:57,356 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 02:51:57,356 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 02:51:57,356 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 02:51:57,356 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 02:51:57,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 02:51:57,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 02:51:57,357 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2023-04-01 02:51:57,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 02:51:57,357 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 02:51:57,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 02:51:57,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 02:51:57,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 02:51:57,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 02:51:57,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 02:51:57,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 02:51:57,404 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 02:51:57,406 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 02:51:57,536 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 02:51:57,600 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 02:51:57,600 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-04-01 02:51:57,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 02:51:57 BoogieIcfgContainer [2023-04-01 02:51:57,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 02:51:57,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 02:51:57,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 02:51:57,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 02:51:57,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 02:51:57" (1/3) ... [2023-04-01 02:51:57,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7e4c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 02:51:57, skipping insertion in model container [2023-04-01 02:51:57,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 02:51:57" (2/3) ... [2023-04-01 02:51:57,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7e4c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 02:51:57, skipping insertion in model container [2023-04-01 02:51:57,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 02:51:57" (3/3) ... [2023-04-01 02:51:57,607 INFO L112 eAbstractionObserver]: Analyzing ICFG xor5.i [2023-04-01 02:51:57,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 02:51:57,635 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 02:51:57,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 02:51:57,668 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;@56fa01cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 02:51:57,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 02:51:57,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 02:51:57,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-04-01 02:51:57,675 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 02:51:57,676 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 02:51:57,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 02:51:57,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 02:51:57,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1558770381, now seen corresponding path program 1 times [2023-04-01 02:51:57,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 02:51:57,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874953835] [2023-04-01 02:51:57,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 02:51:57,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 02:51:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 02:51:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-01 02:51:57,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 02:51:57,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874953835] [2023-04-01 02:51:57,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874953835] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 02:51:57,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 02:51:57,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 02:51:57,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394749573] [2023-04-01 02:51:57,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 02:51:57,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 02:51:57,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 02:51:57,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 02:51:57,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 02:51:57,960 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 02:51:58,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 02:51:58,010 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2023-04-01 02:51:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 02:51:58,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2023-04-01 02:51:58,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 02:51:58,015 INFO L225 Difference]: With dead ends: 44 [2023-04-01 02:51:58,015 INFO L226 Difference]: Without dead ends: 21 [2023-04-01 02:51:58,017 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 [2023-04-01 02:51:58,020 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 02:51:58,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 02:51:58,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-04-01 02:51:58,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-04-01 02:51:58,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 02:51:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-04-01 02:51:58,042 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2023-04-01 02:51:58,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 02:51:58,043 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-04-01 02:51:58,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 02:51:58,043 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-04-01 02:51:58,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-01 02:51:58,044 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 02:51:58,044 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 02:51:58,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 02:51:58,045 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 02:51:58,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 02:51:58,051 INFO L85 PathProgramCache]: Analyzing trace with hash -770508391, now seen corresponding path program 1 times [2023-04-01 02:51:58,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 02:51:58,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349979463] [2023-04-01 02:51:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 02:51:58,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 02:51:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 02:51:58,201 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 02:51:58,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 02:51:58,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349979463] [2023-04-01 02:51:58,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349979463] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 02:51:58,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600640241] [2023-04-01 02:51:58,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 02:51:58,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 02:51:58,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 02:51:58,204 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 02:51:58,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 02:51:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 02:51:58,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 02:51:58,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 02:51:58,358 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-01 02:51:58,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 02:51:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-01 02:51:58,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600640241] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 02:51:58,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1912232307] [2023-04-01 02:51:58,432 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-04-01 02:51:58,432 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 02:51:58,435 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 02:51:58,438 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 02:51:58,440 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 02:51:58,532 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 22 for LOIs [2023-04-01 02:51:58,699 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 34 for LOIs [2023-04-01 02:51:58,709 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-01 02:51:58,723 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 02:51:59,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1912232307] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 02:51:59,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-01 02:51:59,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5, 4, 4] total 18 [2023-04-01 02:51:59,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550917374] [2023-04-01 02:51:59,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 02:51:59,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 02:51:59,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 02:51:59,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 02:51:59,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-04-01 02:51:59,033 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 11 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 02:51:59,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 02:51:59,348 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2023-04-01 02:51:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 02:51:59,349 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 26 [2023-04-01 02:51:59,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 02:51:59,350 INFO L225 Difference]: With dead ends: 34 [2023-04-01 02:51:59,351 INFO L226 Difference]: Without dead ends: 22 [2023-04-01 02:51:59,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2023-04-01 02:51:59,353 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 02:51:59,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 31 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 02:51:59,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-04-01 02:51:59,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-04-01 02:51:59,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 02:51:59,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-04-01 02:51:59,367 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 26 [2023-04-01 02:51:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 02:51:59,367 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-04-01 02:51:59,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 02:51:59,367 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-04-01 02:51:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-04-01 02:51:59,368 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 02:51:59,368 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 02:51:59,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 02:51:59,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 02:51:59,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 02:51:59,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 02:51:59,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1817238020, now seen corresponding path program 1 times [2023-04-01 02:51:59,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 02:51:59,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49221065] [2023-04-01 02:51:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 02:51:59,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 02:51:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 02:51:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-04-01 02:51:59,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 02:51:59,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49221065] [2023-04-01 02:51:59,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49221065] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 02:51:59,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 02:51:59,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 02:51:59,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546173165] [2023-04-01 02:51:59,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 02:51:59,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 02:51:59,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 02:51:59,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 02:51:59,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-01 02:51:59,700 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 02:51:59,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 02:51:59,725 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2023-04-01 02:51:59,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 02:51:59,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2023-04-01 02:51:59,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 02:51:59,727 INFO L225 Difference]: With dead ends: 32 [2023-04-01 02:51:59,727 INFO L226 Difference]: Without dead ends: 23 [2023-04-01 02:51:59,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-01 02:51:59,729 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 02:51:59,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 25 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 02:51:59,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-04-01 02:51:59,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-04-01 02:51:59,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 02:51:59,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-04-01 02:51:59,737 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 29 [2023-04-01 02:51:59,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 02:51:59,738 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-04-01 02:51:59,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 02:51:59,738 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-04-01 02:51:59,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-01 02:51:59,739 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 02:51:59,739 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 02:51:59,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 02:51:59,739 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 02:51:59,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 02:51:59,740 INFO L85 PathProgramCache]: Analyzing trace with hash 503439832, now seen corresponding path program 1 times [2023-04-01 02:51:59,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 02:51:59,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518806167] [2023-04-01 02:51:59,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 02:51:59,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 02:51:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 02:51:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-04-01 02:51:59,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 02:51:59,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518806167] [2023-04-01 02:51:59,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518806167] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 02:51:59,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366801954] [2023-04-01 02:51:59,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 02:51:59,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 02:51:59,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 02:51:59,861 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 02:51:59,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 02:51:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 02:51:59,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 02:51:59,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 02:51:59,950 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-04-01 02:51:59,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 02:51:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-04-01 02:51:59,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366801954] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 02:51:59,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1693931367] [2023-04-01 02:51:59,976 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-04-01 02:51:59,976 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 02:51:59,976 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 02:51:59,976 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 02:51:59,976 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 02:52:00,006 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 22 for LOIs [2023-04-01 02:52:00,116 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 02:52:00,693 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 34 for LOIs [2023-04-01 02:52:00,765 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 02:52:00,913 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-01 02:52:00,917 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 02:52:02,306 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '665#(and (<= 1 |#StackHeapBarrier|) (<= 0 (+ main_~ret2~0 2147483648)) (<= ~N~0 2147483647) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~ret5~0 2147483647) (<= ~N~0 (+ main_~i~2 1)) (or (not (= main_~ret~0 main_~ret2~0)) (not (= main_~ret~0 main_~ret5~0))) (<= ~N~0 main_~i~1) (<= 0 (+ main_~ret5~0 2147483648)) (<= main_~ret~0 2147483647) (<= main_~ret2~0 2147483647) (= |main_~#x~0.offset| 0) (<= 2 ~N~0) (= |old(~N~0)| 0) (= |#NULL.offset| 0) (<= (+ |#StackHeapBarrier| 1) |main_~#x~0.base|) (= |#NULL.base| 0))' at error location [2023-04-01 02:52:02,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 02:52:02,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 02:52:02,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-04-01 02:52:02,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011409425] [2023-04-01 02:52:02,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 02:52:02,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 02:52:02,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 02:52:02,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 02:52:02,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=455, Unknown=8, NotChecked=0, Total=552 [2023-04-01 02:52:02,307 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 02:52:02,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 02:52:02,327 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2023-04-01 02:52:02,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 02:52:02,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 30 [2023-04-01 02:52:02,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 02:52:02,328 INFO L225 Difference]: With dead ends: 39 [2023-04-01 02:52:02,328 INFO L226 Difference]: Without dead ends: 24 [2023-04-01 02:52:02,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=89, Invalid=455, Unknown=8, NotChecked=0, Total=552 [2023-04-01 02:52:02,337 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 02:52:02,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 02:52:02,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-04-01 02:52:02,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-04-01 02:52:02,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 02:52:02,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-04-01 02:52:02,342 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2023-04-01 02:52:02,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 02:52:02,342 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-04-01 02:52:02,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 02:52:02,342 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-04-01 02:52:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-04-01 02:52:02,342 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 02:52:02,343 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 02:52:02,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 02:52:02,549 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,SelfDestructingSolverStorable3 [2023-04-01 02:52:02,549 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 02:52:02,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 02:52:02,549 INFO L85 PathProgramCache]: Analyzing trace with hash -330810740, now seen corresponding path program 2 times [2023-04-01 02:52:02,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 02:52:02,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323325737] [2023-04-01 02:52:02,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 02:52:02,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 02:52:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 02:52:02,691 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 02:52:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 02:52:02,758 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 02:52:02,758 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 02:52:02,759 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 02:52:02,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 02:52:02,762 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-04-01 02:52:02,765 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 02:52:02,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 02:52:02 BoogieIcfgContainer [2023-04-01 02:52:02,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 02:52:02,803 INFO L158 Benchmark]: Toolchain (without parser) took 5725.82ms. Allocated memory was 320.9MB in the beginning and 385.9MB in the end (delta: 65.0MB). Free memory was 282.6MB in the beginning and 216.6MB in the end (delta: 66.1MB). Peak memory consumption was 132.1MB. Max. memory is 8.0GB. [2023-04-01 02:52:02,803 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory is still 142.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 02:52:02,803 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.46ms. Allocated memory is still 320.9MB. Free memory was 282.1MB in the beginning and 271.5MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 02:52:02,804 INFO L158 Benchmark]: Boogie Preprocessor took 33.02ms. Allocated memory is still 320.9MB. Free memory was 271.5MB in the beginning and 270.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 02:52:02,804 INFO L158 Benchmark]: RCFGBuilder took 296.60ms. Allocated memory is still 320.9MB. Free memory was 269.5MB in the beginning and 250.1MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-04-01 02:52:02,804 INFO L158 Benchmark]: TraceAbstraction took 5199.37ms. Allocated memory was 320.9MB in the beginning and 385.9MB in the end (delta: 65.0MB). Free memory was 249.6MB in the beginning and 216.6MB in the end (delta: 33.0MB). Peak memory consumption was 98.6MB. Max. memory is 8.0GB. [2023-04-01 02:52:02,805 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 194.0MB. Free memory is still 142.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 193.46ms. Allocated memory is still 320.9MB. Free memory was 282.1MB in the beginning and 271.5MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.02ms. Allocated memory is still 320.9MB. Free memory was 271.5MB in the beginning and 270.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 296.60ms. Allocated memory is still 320.9MB. Free memory was 269.5MB in the beginning and 250.1MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 5199.37ms. Allocated memory was 320.9MB in the beginning and 385.9MB in the end (delta: 65.0MB). Free memory was 249.6MB in the beginning and 216.6MB in the end (delta: 33.0MB). Peak memory consumption was 98.6MB. 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: 57]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 25. Possible FailurePath: [L17] int N; [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L35] int temp; [L36] int ret; [L37] int ret2; [L38] int ret5; [L40] int i = 0; VAL [N=2, \old(N)=0, i=0, x={9:0}] [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ VAL [N=2, \old(N)=0, i=1, x={9:0}] [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ VAL [N=2, \old(N)=0, i=2, x={9:0}] [L40] COND FALSE !(i < N) VAL [N=2, \old(N)=0, i=2, x={9:0}] [L45] CALL, EXPR xor(x) VAL [N=2, \old(N)=0, x={9:0}] [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 VAL [N=2, \old(N)=0, i=1, res=-3, x={9:0}, x={9:0}] [L24] COND TRUE i < N [L25] EXPR x[i] [L25] EXPR res ^ x[i] [L25] res = res ^ x[i] [L24] i++ VAL [N=2, \old(N)=0, i=2, res=11, x={9:0}, x={9:0}] [L24] COND FALSE !(i < N) [L27] return res; [L45] RET, EXPR xor(x) VAL [N=2, \old(N)=0, i=2, x={9:0}, xor(x)=11] [L45] ret = xor(x) [L47] EXPR x[0] [L47] temp=x[0] [L47] EXPR x[1] [L47] x[0] = x[1] [L47] x[1] = temp VAL [N=2, \old(N)=0, i=2, ret=11, temp=-3, x={9:0}] [L48] CALL, EXPR xor(x) VAL [N=2, \old(N)=0, x={9:0}] [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 VAL [N=2, \old(N)=0, i=1, res=-2, x={9:0}, x={9:0}] [L24] COND TRUE i < N [L25] EXPR x[i] [L25] EXPR res ^ x[i] [L25] res = res ^ x[i] [L24] i++ VAL [N=2, \old(N)=0, i=2, res=10, x={9:0}, x={9:0}] [L24] COND FALSE !(i < N) [L27] return res; [L48] RET, EXPR xor(x) VAL [N=2, \old(N)=0, i=2, ret=11, temp=-3, x={9:0}, xor(x)=10] [L48] ret2 = xor(x) [L49] EXPR x[0] [L49] temp=x[0] [L50] int i =0 ; VAL [N=2, \old(N)=0, i=0, i=2, ret2=10, ret=11, temp=-2, x={9:0}] [L50] COND TRUE i