/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/float-benchs/loop-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 22:54:25,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:54:25,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:54:25,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 22:54:25,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:54:25,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:54:25,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:54:25,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 22:54:25,995 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:54:25,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:54:25,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:54:25,996 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:54:25,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:54:25,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:54:25,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:54:25,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:54:25,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:54:25,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:54:25,997 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:54:25,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:54:25,997 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:54:25,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:54:25,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:54:25,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:54:25,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:54:25,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:54:25,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:54:25,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:54:25,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:54:25,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:54:25,998 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:54:25,998 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:54:26,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:54:26,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:54:26,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:54:26,142 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:54:26,147 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:54:26,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/loop-1.c [2022-01-31 22:54:26,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/867b73e37/2cfe7b003f234e59bc86f1c3d5bc71da/FLAG9ea38e4af [2022-01-31 22:54:26,621 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:54:26,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/loop-1.c [2022-01-31 22:54:26,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/867b73e37/2cfe7b003f234e59bc86f1c3d5bc71da/FLAG9ea38e4af [2022-01-31 22:54:26,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/867b73e37/2cfe7b003f234e59bc86f1c3d5bc71da [2022-01-31 22:54:26,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:54:26,650 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:54:26,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:54:26,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:54:26,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:54:26,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:54:26" (1/1) ... [2022-01-31 22:54:26,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e7aa79c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:26, skipping insertion in model container [2022-01-31 22:54:26,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:54:26" (1/1) ... [2022-01-31 22:54:26,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:54:26,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:54:26,797 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/loop-1.c[311,324] [2022-01-31 22:54:26,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:54:26,816 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:54:26,823 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/loop-1.c[311,324] [2022-01-31 22:54:26,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:54:26,832 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:54:26,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:26 WrapperNode [2022-01-31 22:54:26,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:54:26,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:54:26,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:54:26,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:54:26,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:26" (1/1) ... [2022-01-31 22:54:26,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:26" (1/1) ... [2022-01-31 22:54:26,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:26" (1/1) ... [2022-01-31 22:54:26,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:26" (1/1) ... [2022-01-31 22:54:26,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:26" (1/1) ... [2022-01-31 22:54:26,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:26" (1/1) ... [2022-01-31 22:54:26,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:26" (1/1) ... [2022-01-31 22:54:26,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:54:26,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:54:26,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:54:26,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:54:26,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:26" (1/1) ... [2022-01-31 22:54:26,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:54:26,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:54:26,892 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) [2022-01-31 22:54:26,896 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 [2022-01-31 22:54:26,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:54:26,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:54:26,913 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:54:26,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 22:54:26,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:54:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:54:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:54:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:54:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:54:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 22:54:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:54:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:54:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:54:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:54:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:54:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:54:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:54:26,951 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:54:26,952 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:54:27,016 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:54:27,019 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:54:27,019 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 22:54:27,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:54:27 BoogieIcfgContainer [2022-01-31 22:54:27,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:54:27,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:54:27,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:54:27,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:54:27,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:54:26" (1/3) ... [2022-01-31 22:54:27,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7348af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:54:27, skipping insertion in model container [2022-01-31 22:54:27,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:54:26" (2/3) ... [2022-01-31 22:54:27,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7348af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:54:27, skipping insertion in model container [2022-01-31 22:54:27,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:54:27" (3/3) ... [2022-01-31 22:54:27,027 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-1.c [2022-01-31 22:54:27,030 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:54:27,030 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 22:54:27,055 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:54:27,063 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=JORDAN [2022-01-31 22:54:27,063 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 22:54:27,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-01-31 22:54:27,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-31 22:54:27,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:27,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:54:27,076 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:27,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:27,079 INFO L85 PathProgramCache]: Analyzing trace with hash 614219009, now seen corresponding path program 1 times [2022-01-31 22:54:27,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:27,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269078578] [2022-01-31 22:54:27,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:27,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:27,137 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:27,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:54:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:54:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:54:27,239 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:54:27,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269078578] [2022-01-31 22:54:27,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [269078578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:54:27,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:54:27,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 22:54:27,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706091677] [2022-01-31 22:54:27,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:54:27,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 22:54:27,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:54:27,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 22:54:27,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 22:54:27,274 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:27,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:54:27,308 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-01-31 22:54:27,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 22:54:27,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-01-31 22:54:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:54:27,324 INFO L225 Difference]: With dead ends: 31 [2022-01-31 22:54:27,324 INFO L226 Difference]: Without dead ends: 12 [2022-01-31 22:54:27,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 22:54:27,328 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:54:27,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 21 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:54:27,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-01-31 22:54:27,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-01-31 22:54:27,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:27,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-01-31 22:54:27,377 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-01-31 22:54:27,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:54:27,378 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-01-31 22:54:27,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:54:27,378 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-01-31 22:54:27,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-31 22:54:27,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:54:27,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:54:27,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 22:54:27,380 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:54:27,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:54:27,381 INFO L85 PathProgramCache]: Analyzing trace with hash 610524925, now seen corresponding path program 1 times [2022-01-31 22:54:27,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:54:27,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688760614] [2022-01-31 22:54:27,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:54:27,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:54:27,389 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:54:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:54:27,402 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 22:54:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:54:27,444 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 22:54:27,444 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 22:54:27,448 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 22:54:27,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 22:54:27,452 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 22:54:27,455 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 22:54:27,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:54:27 BoogieIcfgContainer [2022-01-31 22:54:27,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 22:54:27,467 INFO L158 Benchmark]: Toolchain (without parser) took 816.60ms. Allocated memory is still 249.6MB. Free memory was 197.8MB in the beginning and 187.7MB in the end (delta: 10.1MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. [2022-01-31 22:54:27,468 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 249.6MB. Free memory is still 213.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 22:54:27,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.43ms. Allocated memory is still 249.6MB. Free memory was 197.6MB in the beginning and 224.0MB in the end (delta: -26.4MB). Peak memory consumption was 7.5MB. Max. memory is 8.0GB. [2022-01-31 22:54:27,471 INFO L158 Benchmark]: Boogie Preprocessor took 30.07ms. Allocated memory is still 249.6MB. Free memory was 224.0MB in the beginning and 222.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 22:54:27,472 INFO L158 Benchmark]: RCFGBuilder took 156.89ms. Allocated memory is still 249.6MB. Free memory was 222.6MB in the beginning and 213.2MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 22:54:27,474 INFO L158 Benchmark]: TraceAbstraction took 445.13ms. Allocated memory is still 249.6MB. Free memory was 212.6MB in the beginning and 187.7MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2022-01-31 22:54:27,479 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 249.6MB. Free memory is still 213.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 179.43ms. Allocated memory is still 249.6MB. Free memory was 197.6MB in the beginning and 224.0MB in the end (delta: -26.4MB). Peak memory consumption was 7.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.07ms. Allocated memory is still 249.6MB. Free memory was 224.0MB in the beginning and 222.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 156.89ms. Allocated memory is still 249.6MB. Free memory was 222.6MB in the beginning and 213.2MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 445.13ms. Allocated memory is still 249.6MB. Free memory was 212.6MB in the beginning and 187.7MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. 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: 4]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 20, overapproximation of someBinaryDOUBLEComparisonOperation at line 20. Possible FailurePath: [L8] float x, y, z; [L10] x = 1.f [L11] y = 1e7 [L12] z = 42.f [L14] COND FALSE !(x < y) [L20] CALL __VERIFIER_assert(z >= 0.f && z <= 1e8) [L4] COND TRUE !(cond) [L4] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 11 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 18 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 3, 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: No data available, 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 [2022-01-31 22:54:27,503 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...