/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/loop-crafted/simple_vardep_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 05:01:40,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 05:01:40,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 05:01:40,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 05:01:40,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 05:01:40,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 05:01:40,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 05:01:40,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 05:01:40,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 05:01:40,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 05:01:40,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 05:01:40,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2023-04-01 05:01:40,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 05:01:40,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 05:01:40,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 05:01:40,749 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 05:01:40,776 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 05:01:40,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 05:01:40,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 05:01:40,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 05:01:40,778 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 05:01:40,778 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 05:01:40,778 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 05:01:40,779 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 05:01:40,779 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 05:01:40,779 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 05:01:40,779 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 05:01:40,780 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 05:01:40,780 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 05:01:40,780 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 05:01:40,780 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 05:01:40,780 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 05:01:40,780 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 05:01:40,780 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 05:01:40,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 05:01:40,781 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 05:01:40,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 05:01:40,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 05:01:40,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 05:01:40,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 05:01:40,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 05:01:40,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 05:01:40,782 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 05:01:40,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 05:01:40,782 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 05:01:40,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 05:01:40,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 05:01:40,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 05:01:40,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:01:40,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 05:01:40,783 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 05:01:40,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 05:01:40,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 05:01:40,783 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 05:01:40,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 05:01:40,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 05:01:40,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 05:01:40,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 05:01:41,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 05:01:41,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 05:01:41,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 05:01:41,043 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 05:01:41,043 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 05:01:41,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-crafted/simple_vardep_2.c [2023-04-01 05:01:42,165 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 05:01:42,358 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 05:01:42,358 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_vardep_2.c [2023-04-01 05:01:42,363 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22c4ed01f/515a4108f5f5434893af04d364d5f6b3/FLAG95a7912fa [2023-04-01 05:01:42,377 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22c4ed01f/515a4108f5f5434893af04d364d5f6b3 [2023-04-01 05:01:42,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 05:01:42,380 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 05:01:42,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 05:01:42,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 05:01:42,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 05:01:42,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:01:42" (1/1) ... [2023-04-01 05:01:42,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b34672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:01:42, skipping insertion in model container [2023-04-01 05:01:42,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:01:42" (1/1) ... [2023-04-01 05:01:42,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 05:01:42,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 05:01:42,532 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_vardep_2.c[584,597] [2023-04-01 05:01:42,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:01:42,556 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 05:01:42,566 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_vardep_2.c[584,597] [2023-04-01 05:01:42,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:01:42,580 INFO L208 MainTranslator]: Completed translation [2023-04-01 05:01:42,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:01:42 WrapperNode [2023-04-01 05:01:42,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 05:01:42,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 05:01:42,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 05:01:42,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 05:01:42,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:01:42" (1/1) ... [2023-04-01 05:01:42,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:01:42" (1/1) ... [2023-04-01 05:01:42,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:01:42" (1/1) ... [2023-04-01 05:01:42,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:01:42" (1/1) ... [2023-04-01 05:01:42,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:01:42" (1/1) ... [2023-04-01 05:01:42,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:01:42" (1/1) ... [2023-04-01 05:01:42,600 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:01:42" (1/1) ... [2023-04-01 05:01:42,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:01:42" (1/1) ... [2023-04-01 05:01:42,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 05:01:42,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 05:01:42,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 05:01:42,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 05:01:42,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:01:42" (1/1) ... [2023-04-01 05:01:42,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:01:42,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:01:42,639 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 05:01:42,640 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 05:01:42,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 05:01:42,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 05:01:42,669 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 05:01:42,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 05:01:42,669 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 05:01:42,669 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 05:01:42,669 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 05:01:42,669 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 05:01:42,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 05:01:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 05:01:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 05:01:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 05:01:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 05:01:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 05:01:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 05:01:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 05:01:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 05:01:42,722 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 05:01:42,724 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 05:01:42,812 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 05:01:42,828 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 05:01:42,828 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 05:01:42,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:01:42 BoogieIcfgContainer [2023-04-01 05:01:42,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 05:01:42,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 05:01:42,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 05:01:42,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 05:01:42,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:01:42" (1/3) ... [2023-04-01 05:01:42,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2228f19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:01:42, skipping insertion in model container [2023-04-01 05:01:42,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:01:42" (2/3) ... [2023-04-01 05:01:42,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2228f19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:01:42, skipping insertion in model container [2023-04-01 05:01:42,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:01:42" (3/3) ... [2023-04-01 05:01:42,840 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.c [2023-04-01 05:01:42,858 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 05:01:42,859 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 05:01:42,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 05:01:42,916 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;@1326ba24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 05:01:42,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 05:01:42,920 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 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) [2023-04-01 05:01:42,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-04-01 05:01:42,927 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:01:42,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:01:42,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:01:42,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:01:42,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1364474693, now seen corresponding path program 1 times [2023-04-01 05:01:42,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:01:42,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096703263] [2023-04-01 05:01:42,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:01:42,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:01:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:01:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:01:43,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:01:43,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096703263] [2023-04-01 05:01:43,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096703263] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:01:43,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:01:43,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 05:01:43,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187695853] [2023-04-01 05:01:43,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:01:43,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 05:01:43,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:01:43,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 05:01:43,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:01:43,959 INFO L87 Difference]: Start difference. First operand has 16 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2023-04-01 05:01:44,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:01:44,058 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2023-04-01 05:01:44,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 05:01:44,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 [2023-04-01 05:01:44,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:01:44,066 INFO L225 Difference]: With dead ends: 26 [2023-04-01 05:01:44,066 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 05:01:44,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:01:44,071 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:01:44,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 32 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:01:44,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 05:01:44,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 05:01:44,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 05:01:44,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 05:01:44,091 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2023-04-01 05:01:44,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:01:44,092 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 05:01:44,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2023-04-01 05:01:44,093 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 05:01:44,093 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 05:01:44,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 05:01:44,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 05:01:44,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 05:01:44,170 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 6) no Hoare annotation was computed. [2023-04-01 05:01:44,171 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 6) no Hoare annotation was computed. [2023-04-01 05:01:44,172 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 05:01:44,172 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 05:01:44,172 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 05:01:44,172 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-01 05:01:44,172 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 05:01:44,172 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 05:01:44,173 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse8 (* main_~i~0 3))) (let ((.cse2 (div main_~k~0 4294967296)) (.cse3 (div .cse8 4294967296)) (.cse7 (div main_~i~0 2147483648)) (.cse6 (div main_~j~0 4294967296))) (let ((.cse1 (+ (* main_~i~0 2) (* 4294967296 .cse6))) (.cse0 (* .cse7 4294967296)) (.cse5 (* .cse3 4294967296)) (.cse4 (+ (* .cse2 4294967296) .cse8))) (and (<= (+ main_~j~0 .cse0) .cse1) (<= .cse2 .cse3) (< .cse4 (+ main_~k~0 .cse5 1)) (< .cse1 (+ main_~j~0 .cse0 1)) (< .cse6 (+ .cse7 1)) (<= (+ main_~k~0 .cse5) .cse4))))) [2023-04-01 05:01:44,173 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 15 28) no Hoare annotation was computed. [2023-04-01 05:01:44,173 INFO L895 garLoopResultBuilder]: At program point L25-1(lines 21 26) the Hoare annotation is: (let ((.cse8 (* main_~i~0 3))) (let ((.cse2 (div main_~k~0 4294967296)) (.cse3 (div .cse8 4294967296)) (.cse7 (div main_~i~0 2147483648)) (.cse6 (div main_~j~0 4294967296))) (let ((.cse1 (+ (* main_~i~0 2) (* 4294967296 .cse6))) (.cse0 (* .cse7 4294967296)) (.cse5 (* .cse3 4294967296)) (.cse4 (+ (* .cse2 4294967296) .cse8))) (and (<= (+ main_~j~0 .cse0) .cse1) (<= .cse2 .cse3) (< .cse4 (+ main_~k~0 .cse5 1)) (< .cse1 (+ main_~j~0 .cse0 1)) (< .cse6 (+ .cse7 1)) (<= (+ main_~k~0 .cse5) .cse4))))) [2023-04-01 05:01:44,174 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 28) the Hoare annotation is: true [2023-04-01 05:01:44,174 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2023-04-01 05:01:44,174 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 7 13) no Hoare annotation was computed. [2023-04-01 05:01:44,175 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 13) the Hoare annotation is: true [2023-04-01 05:01:44,175 INFO L899 garLoopResultBuilder]: For program point L9(lines 9 11) no Hoare annotation was computed. [2023-04-01 05:01:44,175 INFO L899 garLoopResultBuilder]: For program point L9-2(lines 7 13) no Hoare annotation was computed. [2023-04-01 05:01:44,175 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2023-04-01 05:01:44,178 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-04-01 05:01:44,182 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 05:01:44,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 05:01:44 BoogieIcfgContainer [2023-04-01 05:01:44,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 05:01:44,206 INFO L158 Benchmark]: Toolchain (without parser) took 1825.76ms. Allocated memory is still 281.0MB. Free memory was 232.8MB in the beginning and 179.7MB in the end (delta: 53.1MB). Peak memory consumption was 54.2MB. Max. memory is 8.0GB. [2023-04-01 05:01:44,207 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory is still 138.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 05:01:44,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.66ms. Allocated memory is still 281.0MB. Free memory was 232.5MB in the beginning and 222.6MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-04-01 05:01:44,209 INFO L158 Benchmark]: Boogie Preprocessor took 20.65ms. Allocated memory is still 281.0MB. Free memory was 222.6MB in the beginning and 221.3MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 05:01:44,211 INFO L158 Benchmark]: RCFGBuilder took 227.86ms. Allocated memory is still 281.0MB. Free memory was 221.2MB in the beginning and 210.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 05:01:44,212 INFO L158 Benchmark]: TraceAbstraction took 1371.88ms. Allocated memory is still 281.0MB. Free memory was 209.8MB in the beginning and 179.7MB in the end (delta: 30.2MB). Peak memory consumption was 31.1MB. Max. memory is 8.0GB. [2023-04-01 05:01:44,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory is still 138.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 197.66ms. Allocated memory is still 281.0MB. Free memory was 232.5MB in the beginning and 222.6MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.65ms. Allocated memory is still 281.0MB. Free memory was 222.6MB in the beginning and 221.3MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 227.86ms. Allocated memory is still 281.0MB. Free memory was 221.2MB in the beginning and 210.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1371.88ms. Allocated memory is still 281.0MB. Free memory was 209.8MB in the beginning and 179.7MB in the end (delta: 30.2MB). Peak memory consumption was 31.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 10]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26 IncrementalHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 8 mSDtfsCounter, 26 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 11 NumberOfFragments, 191 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 116 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((((j + i / 2147483648 * 4294967296 <= i * 2 + 4294967296 * (j / 4294967296) && k / 4294967296 <= i * 3 / 4294967296) && k / 4294967296 * 4294967296 + i * 3 < k + i * 3 / 4294967296 * 4294967296 + 1) && i * 2 + 4294967296 * (j / 4294967296) < j + i / 2147483648 * 4294967296 + 1) && j / 4294967296 < i / 2147483648 + 1) && k + i * 3 / 4294967296 * 4294967296 <= k / 4294967296 * 4294967296 + i * 3 RESULT: Ultimate proved your program to be correct! [2023-04-01 05:01:44,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...