/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/interpolation.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 22:53:43,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:53:43,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:53:43,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 22:53:43,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 22:53:43,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 22:53:43,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 22:53:43,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 22:53:43,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 22:53:43,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 22:53:43,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 22:53:43,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 22:53:43,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 22:53:43,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 22:53:43,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 22:53:43,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 22:53:43,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 22:53:43,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:53:43,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:53:43,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:53:43,247 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 22:53:43,258 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:53:43,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:53:43,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:53:43,259 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:53:43,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:53:43,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:53:43,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:53:43,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:53:43,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:53:43,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:53:43,260 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:53:43,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:53:43,260 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:53:43,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:53:43,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:53:43,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:53:43,260 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:53:43,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:53:43,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:53:43,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:53:43,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:53:43,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:53:43,261 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:53:43,261 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:53:43,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:53:43,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:53:43,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:53:43,440 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:53:43,442 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:53:43,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c [2022-01-31 22:53:43,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406284a89/f3b9df019e40495b8893778ae7f1ef32/FLAG8c665c9ed [2022-01-31 22:53:43,899 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:53:43,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c [2022-01-31 22:53:43,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406284a89/f3b9df019e40495b8893778ae7f1ef32/FLAG8c665c9ed [2022-01-31 22:53:44,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406284a89/f3b9df019e40495b8893778ae7f1ef32 [2022-01-31 22:53:44,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:53:44,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:53:44,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:53:44,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:53:44,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:53:44,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:53:44" (1/1) ... [2022-01-31 22:53:44,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ffdc01b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:44, skipping insertion in model container [2022-01-31 22:53:44,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:53:44" (1/1) ... [2022-01-31 22:53:44,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:53:44,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:53:44,431 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/interpolation.c.p+cfa-reducer.c[1306,1319] [2022-01-31 22:53:44,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:53:44,438 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:53:44,450 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/interpolation.c.p+cfa-reducer.c[1306,1319] [2022-01-31 22:53:44,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:53:44,459 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:53:44,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:44 WrapperNode [2022-01-31 22:53:44,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:53:44,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:53:44,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:53:44,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:53:44,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:44" (1/1) ... [2022-01-31 22:53:44,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:44" (1/1) ... [2022-01-31 22:53:44,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:44" (1/1) ... [2022-01-31 22:53:44,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:44" (1/1) ... [2022-01-31 22:53:44,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:44" (1/1) ... [2022-01-31 22:53:44,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:44" (1/1) ... [2022-01-31 22:53:44,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:44" (1/1) ... [2022-01-31 22:53:44,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:53:44,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:53:44,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:53:44,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:53:44,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:44" (1/1) ... [2022-01-31 22:53:44,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:53:44,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:53:44,522 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 22:53:44,556 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 22:53:44,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:53:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:53:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:53:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 22:53:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:53:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:53:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:53:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:53:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:53:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 22:53:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 22:53:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 22:53:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:53:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 22:53:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-01-31 22:53:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 22:53:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:53:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:53:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:53:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:53:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 22:53:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:53:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:53:44,638 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:53:44,640 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:53:44,772 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:53:44,776 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:53:44,776 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-31 22:53:44,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:53:44 BoogieIcfgContainer [2022-01-31 22:53:44,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:53:44,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:53:44,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:53:44,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:53:44,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:53:44" (1/3) ... [2022-01-31 22:53:44,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fcc77b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:53:44, skipping insertion in model container [2022-01-31 22:53:44,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:53:44" (2/3) ... [2022-01-31 22:53:44,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fcc77b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:53:44, skipping insertion in model container [2022-01-31 22:53:44,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:53:44" (3/3) ... [2022-01-31 22:53:44,784 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation.c.p+cfa-reducer.c [2022-01-31 22:53:44,787 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:53:44,787 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 22:53:44,814 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:53:44,820 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 22:53:44,820 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 22:53:44,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 22:53:44,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-31 22:53:44,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:44,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:44,836 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:44,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:44,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1359141034, now seen corresponding path program 1 times [2022-01-31 22:53:44,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:44,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580816712] [2022-01-31 22:53:44,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:44,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:44,881 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:45,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:45,030 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 22:53:45,031 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:45,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580816712] [2022-01-31 22:53:45,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1580816712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:45,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:45,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 22:53:45,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401018980] [2022-01-31 22:53:45,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:45,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 22:53:45,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:45,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 22:53:45,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 22:53:45,061 INFO L87 Difference]: Start difference. First operand has 24 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:45,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:45,133 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2022-01-31 22:53:45,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 22:53:45,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-01-31 22:53:45,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:45,140 INFO L225 Difference]: With dead ends: 41 [2022-01-31 22:53:45,140 INFO L226 Difference]: Without dead ends: 19 [2022-01-31 22:53:45,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 22:53:45,145 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 27 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:45,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 37 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:53:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-31 22:53:45,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-01-31 22:53:45,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:45,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2022-01-31 22:53:45,170 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 16 [2022-01-31 22:53:45,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:45,170 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2022-01-31 22:53:45,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:45,171 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-01-31 22:53:45,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-31 22:53:45,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:45,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:45,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 22:53:45,172 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:45,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:45,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1394950673, now seen corresponding path program 1 times [2022-01-31 22:53:45,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:45,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811448432] [2022-01-31 22:53:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:45,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:45,179 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:45,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:45,259 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 22:53:45,259 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:45,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811448432] [2022-01-31 22:53:45,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1811448432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:45,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:45,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 22:53:45,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427266876] [2022-01-31 22:53:45,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:45,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 22:53:45,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:45,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 22:53:45,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 22:53:45,263 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:45,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:45,341 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-01-31 22:53:45,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 22:53:45,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-01-31 22:53:45,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:45,343 INFO L225 Difference]: With dead ends: 23 [2022-01-31 22:53:45,343 INFO L226 Difference]: Without dead ends: 19 [2022-01-31 22:53:45,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-31 22:53:45,347 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 34 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:45,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 37 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:53:45,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-31 22:53:45,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-01-31 22:53:45,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:45,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-01-31 22:53:45,359 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2022-01-31 22:53:45,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:45,359 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-01-31 22:53:45,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:45,359 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-01-31 22:53:45,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-31 22:53:45,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:45,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:45,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 22:53:45,360 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:45,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:45,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1379846636, now seen corresponding path program 1 times [2022-01-31 22:53:45,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:45,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342136966] [2022-01-31 22:53:45,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:45,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:45,362 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:45,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:53:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:53:45,405 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 22:53:45,406 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:53:45,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342136966] [2022-01-31 22:53:45,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [342136966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:53:45,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:53:45,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 22:53:45,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168690874] [2022-01-31 22:53:45,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:53:45,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 22:53:45,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:53:45,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 22:53:45,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 22:53:45,407 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:45,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:53:45,434 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-01-31 22:53:45,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 22:53:45,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-01-31 22:53:45,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:53:45,435 INFO L225 Difference]: With dead ends: 37 [2022-01-31 22:53:45,435 INFO L226 Difference]: Without dead ends: 29 [2022-01-31 22:53:45,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 22:53:45,436 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 36 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:53:45,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 26 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:53:45,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-31 22:53:45,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2022-01-31 22:53:45,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-01-31 22:53:45,440 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2022-01-31 22:53:45,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:53:45,440 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-01-31 22:53:45,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:53:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-01-31 22:53:45,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-31 22:53:45,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:53:45,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:53:45,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 22:53:45,441 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:53:45,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:53:45,441 INFO L85 PathProgramCache]: Analyzing trace with hash 598496473, now seen corresponding path program 1 times [2022-01-31 22:53:45,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:53:45,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938858242] [2022-01-31 22:53:45,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:53:45,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:53:45,443 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:53:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:53:45,452 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 22:53:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:53:45,471 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 22:53:45,471 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 22:53:45,473 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 22:53:45,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 22:53:45,476 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-31 22:53:45,478 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 22:53:45,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:53:45 BoogieIcfgContainer [2022-01-31 22:53:45,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 22:53:45,486 INFO L158 Benchmark]: Toolchain (without parser) took 1203.06ms. Allocated memory is still 189.8MB. Free memory was 136.7MB in the beginning and 99.1MB in the end (delta: 37.6MB). Peak memory consumption was 37.5MB. Max. memory is 8.0GB. [2022-01-31 22:53:45,486 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 189.8MB. Free memory was 153.5MB in the beginning and 153.5MB in the end (delta: 72.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 22:53:45,486 INFO L158 Benchmark]: CACSL2BoogieTranslator took 175.08ms. Allocated memory is still 189.8MB. Free memory was 136.4MB in the beginning and 162.0MB in the end (delta: -25.5MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. [2022-01-31 22:53:45,487 INFO L158 Benchmark]: Boogie Preprocessor took 37.36ms. Allocated memory is still 189.8MB. Free memory was 162.0MB in the beginning and 160.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 22:53:45,487 INFO L158 Benchmark]: RCFGBuilder took 279.55ms. Allocated memory is still 189.8MB. Free memory was 160.4MB in the beginning and 148.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 22:53:45,487 INFO L158 Benchmark]: TraceAbstraction took 706.73ms. Allocated memory is still 189.8MB. Free memory was 148.3MB in the beginning and 99.1MB in the end (delta: 49.3MB). Peak memory consumption was 49.3MB. Max. memory is 8.0GB. [2022-01-31 22:53:45,488 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 189.8MB. Free memory was 153.5MB in the beginning and 153.5MB in the end (delta: 72.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 175.08ms. Allocated memory is still 189.8MB. Free memory was 136.4MB in the beginning and 162.0MB in the end (delta: -25.5MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.36ms. Allocated memory is still 189.8MB. Free memory was 162.0MB in the beginning and 160.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 279.55ms. Allocated memory is still 189.8MB. Free memory was 160.4MB in the beginning and 148.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 706.73ms. Allocated memory is still 189.8MB. Free memory was 148.3MB in the beginning and 99.1MB in the end (delta: 49.3MB). Peak memory consumption was 49.3MB. 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: 51]: 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 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 38, overapproximation of to_real at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 36. Possible FailurePath: [L1] int __return_main; [L14] int main__i; [L15] float main__z; [L16] float main__t; [L17] float main__min[5] = { 5, 10, 12, 30, 150 }; [L18] float main__max[5] = { 10, 12, 30, 150, 300 }; [L19] main__t = __VERIFIER_nondet_float() [L20] int main____CPAchecker_TMP_0; [L21] EXPR main__min[0] [L21] COND TRUE main__t >= (main__min[0]) [L23] EXPR main__max[4UL] [L23] COND TRUE main__t <= (main__max[4UL]) [L25] main____CPAchecker_TMP_0 = 1 [L27] COND TRUE main____CPAchecker_TMP_0 != 0 [L29] main__i = 0 [L31] COND TRUE main__i < 5UL [L33] EXPR main__max[main__i] [L33] COND TRUE main__t <= (main__max[main__i]) [L36] EXPR main__min[main__i] [L36] EXPR main__max[main__i] [L36] EXPR main__min[main__i] [L36] main__z = (main__t - (main__min[main__i])) / ((main__max[main__i]) - (main__min[main__i])) [L37] int main____CPAchecker_TMP_1; [L38] COND FALSE !(main__z >= 0.0) [L63] main____CPAchecker_TMP_1 = 0 [L45] int __tmp_1; [L46] __tmp_1 = main____CPAchecker_TMP_1 [L47] int __VERIFIER_assert__cond; [L48] __VERIFIER_assert__cond = __tmp_1 [L49] COND TRUE __VERIFIER_assert__cond == 0 [L51] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 97 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 97 mSDsluCounter, 100 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 67 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 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 22:53:45,523 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...