/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-benchs/filter1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:57:57,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:57:57,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:57:57,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 05:57:57,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:57:57,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:57:57,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:57:57,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 05:57:57,819 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:57:57,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:57:57,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:57:57,820 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:57:57,820 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:57:57,820 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:57:57,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:57:57,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:57:57,821 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:57:57,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:57:57,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:57:57,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:57:57,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:57:57,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:57:57,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:57:57,822 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:57:57,822 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:57:57,822 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:57:57,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:57:57,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:57:57,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:57:57,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:57:57,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:57:57,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:57:57,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:57:57,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:57:57,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:57:57,826 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:57:57,826 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:57:57,826 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:57:57,826 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:57:57,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:57:57,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:57:57,827 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:57:58,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:57:58,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:57:58,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:57:58,061 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:57:58,062 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:57:58,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/filter1.c [2022-01-10 05:57:58,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37ceddda7/87b03ec8b8b247289f1dfcc4038b3e83/FLAG7369039bd [2022-01-10 05:57:58,467 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:57:58,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/filter1.c [2022-01-10 05:57:58,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37ceddda7/87b03ec8b8b247289f1dfcc4038b3e83/FLAG7369039bd [2022-01-10 05:57:58,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37ceddda7/87b03ec8b8b247289f1dfcc4038b3e83 [2022-01-10 05:57:58,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:57:58,486 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:57:58,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:57:58,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:57:58,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:57:58,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:57:58" (1/1) ... [2022-01-10 05:57:58,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@291224b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:58, skipping insertion in model container [2022-01-10 05:57:58,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:57:58" (1/1) ... [2022-01-10 05:57:58,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:57:58,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:57:58,631 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/filter1.c[627,640] [2022-01-10 05:57:58,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:57:58,669 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:57:58,678 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/filter1.c[627,640] [2022-01-10 05:57:58,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:57:58,692 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:57:58,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:58 WrapperNode [2022-01-10 05:57:58,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:57:58,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:57:58,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:57:58,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:57:58,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:58" (1/1) ... [2022-01-10 05:57:58,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:58" (1/1) ... [2022-01-10 05:57:58,728 INFO L137 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2022-01-10 05:57:58,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:57:58,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:57:58,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:57:58,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:57:58,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:58" (1/1) ... [2022-01-10 05:57:58,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:58" (1/1) ... [2022-01-10 05:57:58,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:58" (1/1) ... [2022-01-10 05:57:58,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:58" (1/1) ... [2022-01-10 05:57:58,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:58" (1/1) ... [2022-01-10 05:57:58,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:58" (1/1) ... [2022-01-10 05:57:58,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:58" (1/1) ... [2022-01-10 05:57:58,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:57:58,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:57:58,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:57:58,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:57:58,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:58" (1/1) ... [2022-01-10 05:57:58,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:57:58,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:57:58,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 05:57:58,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 05:57:58,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:57:58,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:57:58,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:57:58,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:57:58,902 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:57:58,904 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:57:59,023 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:57:59,031 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:57:59,031 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:57:59,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:57:59 BoogieIcfgContainer [2022-01-10 05:57:59,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:57:59,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:57:59,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:57:59,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:57:59,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:57:58" (1/3) ... [2022-01-10 05:57:59,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f652a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:57:59, skipping insertion in model container [2022-01-10 05:57:59,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:58" (2/3) ... [2022-01-10 05:57:59,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f652a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:57:59, skipping insertion in model container [2022-01-10 05:57:59,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:57:59" (3/3) ... [2022-01-10 05:57:59,040 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c [2022-01-10 05:57:59,048 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:57:59,049 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:57:59,090 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:57:59,096 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 05:57:59,096 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:57:59,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:57:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 05:57:59,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:57:59,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:57:59,112 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:57:59,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:57:59,116 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2022-01-10 05:57:59,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:57:59,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960997899] [2022-01-10 05:57:59,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:57:59,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:57:59,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:57:59,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:57:59,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 05:57:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:57:59,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 05:57:59,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:57:59,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:57:59,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:57:59,239 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:57:59,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960997899] [2022-01-10 05:57:59,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960997899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:57:59,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:57:59,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:57:59,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119837092] [2022-01-10 05:57:59,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:57:59,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 05:57:59,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:57:59,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 05:57:59,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 05:57:59,286 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:57:59,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:57:59,298 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2022-01-10 05:57:59,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 05:57:59,313 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) Word has length 9 [2022-01-10 05:57:59,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:57:59,319 INFO L225 Difference]: With dead ends: 30 [2022-01-10 05:57:59,319 INFO L226 Difference]: Without dead ends: 12 [2022-01-10 05:57:59,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 05:57:59,325 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 05:57:59,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 05:57:59,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-01-10 05:57:59,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-01-10 05:57:59,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:57:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-01-10 05:57:59,383 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2022-01-10 05:57:59,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:57:59,384 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-01-10 05:57:59,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:57:59,385 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-01-10 05:57:59,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 05:57:59,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:57:59,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:57:59,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 05:57:59,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:57:59,586 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:57:59,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:57:59,587 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2022-01-10 05:57:59,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:57:59,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681680292] [2022-01-10 05:57:59,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:57:59,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:57:59,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:57:59,590 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:57:59,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 05:57:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 05:57:59,632 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 05:57:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 05:57:59,662 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-01-10 05:57:59,662 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 05:57:59,664 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 05:57:59,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 05:57:59,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:57:59,870 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-10 05:57:59,873 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 05:57:59,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:57:59 BoogieIcfgContainer [2022-01-10 05:57:59,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 05:57:59,893 INFO L158 Benchmark]: Toolchain (without parser) took 1407.00ms. Allocated memory was 180.4MB in the beginning and 221.2MB in the end (delta: 40.9MB). Free memory was 126.9MB in the beginning and 158.1MB in the end (delta: -31.1MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. [2022-01-10 05:57:59,894 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 05:57:59,894 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.89ms. Allocated memory was 180.4MB in the beginning and 221.2MB in the end (delta: 40.9MB). Free memory was 126.8MB in the beginning and 195.8MB in the end (delta: -69.0MB). Peak memory consumption was 8.0MB. Max. memory is 8.0GB. [2022-01-10 05:57:59,895 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.96ms. Allocated memory is still 221.2MB. Free memory was 195.8MB in the beginning and 194.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 05:57:59,895 INFO L158 Benchmark]: Boogie Preprocessor took 37.89ms. Allocated memory is still 221.2MB. Free memory was 194.0MB in the beginning and 192.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 05:57:59,896 INFO L158 Benchmark]: RCFGBuilder took 264.33ms. Allocated memory is still 221.2MB. Free memory was 192.7MB in the beginning and 182.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-10 05:57:59,896 INFO L158 Benchmark]: TraceAbstraction took 858.50ms. Allocated memory is still 221.2MB. Free memory was 182.7MB in the beginning and 158.1MB in the end (delta: 24.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-01-10 05:57:59,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 205.89ms. Allocated memory was 180.4MB in the beginning and 221.2MB in the end (delta: 40.9MB). Free memory was 126.8MB in the beginning and 195.8MB in the end (delta: -69.0MB). Peak memory consumption was 8.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.96ms. Allocated memory is still 221.2MB. Free memory was 195.8MB in the beginning and 194.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.89ms. Allocated memory is still 221.2MB. Free memory was 194.0MB in the beginning and 192.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 264.33ms. Allocated memory is still 221.2MB. Free memory was 192.7MB in the beginning and 182.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 858.50ms. Allocated memory is still 221.2MB. Free memory was 182.7MB in the beginning and 158.1MB in the end (delta: 24.6MB). Peak memory consumption was 24.1MB. 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 - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_fp at line 34, overapproximation of fp.geq at line 41, overapproximation of fp.leq at line 41. Possible FailurePath: [L22] double E0, E1, S; [L23] int i; [L25] E1 = 0 [L26] S = 0 [L28] i = 0 VAL [i=0] [L28] COND TRUE i <= 1000000 [L30] E0 = __VERIFIER_nondet_double() [L31] CALL assume_abort_if_not(E0 >= -1. && E0 <= 1.) [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L31] RET assume_abort_if_not(E0 >= -1. && E0 <= 1.) [L33] COND TRUE __VERIFIER_nondet_int() [L34] S = 0 VAL [i=0] [L39] E1 = E0 [L41] CALL __VERIFIER_assert(S >= -10000. && S <= 10000.) [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L17] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 17 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 2, 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 28 ConjunctsInSsa, 1 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-10 05:57:59,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...