/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1012b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:20:38,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:20:38,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:20:38,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:20:38,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:20:38,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:20:38,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:20:38,888 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-01 00:20:38,900 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:20:38,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:20:38,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:20:38,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:20:38,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:20:38,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:20:38,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:20:38,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:20:38,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:20:38,903 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:20:38,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:20:38,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:20:38,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:20:38,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:20:38,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:20:38,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:20:38,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:20:38,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:20:38,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:20:38,904 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:20:38,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:20:39,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:20:39,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:20:39,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:20:39,105 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:20:39,106 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:20:39,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1012b.c [2022-02-01 00:20:39,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c06db7c5a/48851e3a21864d2faf6b8e13858e7e62/FLAG174c0a9fd [2022-02-01 00:20:39,473 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:20:39,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1012b.c [2022-02-01 00:20:39,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c06db7c5a/48851e3a21864d2faf6b8e13858e7e62/FLAG174c0a9fd [2022-02-01 00:20:39,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c06db7c5a/48851e3a21864d2faf6b8e13858e7e62 [2022-02-01 00:20:39,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:20:39,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:20:39,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:20:39,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:20:39,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:20:39,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:20:39" (1/1) ... [2022-02-01 00:20:39,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53400251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:39, skipping insertion in model container [2022-02-01 00:20:39,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:20:39" (1/1) ... [2022-02-01 00:20:39,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:20:39,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:20:40,046 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-newlib/float_req_bl_1012b.c[1158,1171] [2022-02-01 00:20:40,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:20:40,056 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:20:40,088 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-newlib/float_req_bl_1012b.c[1158,1171] [2022-02-01 00:20:40,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:20:40,103 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:20:40,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:40 WrapperNode [2022-02-01 00:20:40,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:20:40,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:20:40,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:20:40,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:20:40,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:40" (1/1) ... [2022-02-01 00:20:40,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:40" (1/1) ... [2022-02-01 00:20:40,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:40" (1/1) ... [2022-02-01 00:20:40,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:40" (1/1) ... [2022-02-01 00:20:40,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:40" (1/1) ... [2022-02-01 00:20:40,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:40" (1/1) ... [2022-02-01 00:20:40,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:40" (1/1) ... [2022-02-01 00:20:40,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:20:40,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:20:40,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:20:40,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:20:40,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:40" (1/1) ... [2022-02-01 00:20:40,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:20:40,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:20:40,199 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) [2022-02-01 00:20:40,201 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 [2022-02-01 00:20:40,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:20:40,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:20:40,233 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:20:40,234 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2022-02-01 00:20:40,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2022-02-01 00:20:40,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:20:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:20:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:20:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:20:40,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:20:40,239 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2022-02-01 00:20:40,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:20:40,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:20:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:20:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:20:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:20:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:20:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2022-02-01 00:20:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:20:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:20:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:20:40,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:20:40,320 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:20:40,321 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:20:40,439 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:20:40,443 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:20:40,443 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-02-01 00:20:40,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:20:40 BoogieIcfgContainer [2022-02-01 00:20:40,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:20:40,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:20:40,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:20:40,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:20:40,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:20:39" (1/3) ... [2022-02-01 00:20:40,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3d1be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:20:40, skipping insertion in model container [2022-02-01 00:20:40,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:40" (2/3) ... [2022-02-01 00:20:40,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3d1be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:20:40, skipping insertion in model container [2022-02-01 00:20:40,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:20:40" (3/3) ... [2022-02-01 00:20:40,458 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012b.c [2022-02-01 00:20:40,462 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:20:40,462 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:20:40,489 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:20:40,493 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=QVASR [2022-02-01 00:20:40,494 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:20:40,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-01 00:20:40,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-01 00:20:40,507 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:20:40,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:20:40,508 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:20:40,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:20:40,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2117634597, now seen corresponding path program 1 times [2022-02-01 00:20:40,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:20:40,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441032166] [2022-02-01 00:20:40,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:20:40,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:20:40,555 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:20:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:40,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:20:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:40,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:20:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:40,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-02-01 00:20:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-01 00:20:40,646 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:20:40,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441032166] [2022-02-01 00:20:40,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1441032166] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:20:40,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:20:40,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:20:40,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030530213] [2022-02-01 00:20:40,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:20:40,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:20:40,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:20:40,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:20:40,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:20:40,675 INFO L87 Difference]: Start difference. First operand has 31 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-01 00:20:40,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:20:40,778 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2022-02-01 00:20:40,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:20:40,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-02-01 00:20:40,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:20:40,785 INFO L225 Difference]: With dead ends: 54 [2022-02-01 00:20:40,785 INFO L226 Difference]: Without dead ends: 27 [2022-02-01 00:20:40,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-01 00:20:40,790 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 21 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-01 00:20:40,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 27 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-01 00:20:40,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-01 00:20:40,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-02-01 00:20:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.0) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-01 00:20:40,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2022-02-01 00:20:40,813 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 23 [2022-02-01 00:20:40,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:20:40,814 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2022-02-01 00:20:40,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-01 00:20:40,814 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2022-02-01 00:20:40,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-01 00:20:40,815 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:20:40,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:20:40,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:20:40,816 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:20:40,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:20:40,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1796963793, now seen corresponding path program 1 times [2022-02-01 00:20:40,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:20:40,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181340590] [2022-02-01 00:20:40,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:20:40,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:20:40,829 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:20:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:20:40,895 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:20:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:20:40,949 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:20:40,950 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:20:40,953 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:20:40,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:20:40,961 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:20:40,964 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:20:40,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:20:40 BoogieIcfgContainer [2022-02-01 00:20:40,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:20:40,976 INFO L158 Benchmark]: Toolchain (without parser) took 1075.95ms. Allocated memory is still 230.7MB. Free memory was 181.9MB in the beginning and 158.6MB in the end (delta: 23.3MB). Peak memory consumption was 24.4MB. Max. memory is 8.0GB. [2022-02-01 00:20:40,976 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 230.7MB. Free memory is still 197.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:20:40,977 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.61ms. Allocated memory is still 230.7MB. Free memory was 181.6MB in the beginning and 206.8MB in the end (delta: -25.1MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. [2022-02-01 00:20:40,981 INFO L158 Benchmark]: Boogie Preprocessor took 59.20ms. Allocated memory is still 230.7MB. Free memory was 206.8MB in the beginning and 205.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-01 00:20:40,981 INFO L158 Benchmark]: RCFGBuilder took 280.65ms. Allocated memory is still 230.7MB. Free memory was 205.3MB in the beginning and 193.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-02-01 00:20:40,982 INFO L158 Benchmark]: TraceAbstraction took 528.88ms. Allocated memory is still 230.7MB. Free memory was 193.2MB in the beginning and 158.6MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2022-02-01 00:20:40,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 230.7MB. Free memory is still 197.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 202.61ms. Allocated memory is still 230.7MB. Free memory was 181.6MB in the beginning and 206.8MB in the end (delta: -25.1MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 59.20ms. Allocated memory is still 230.7MB. Free memory was 206.8MB in the beginning and 205.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 280.65ms. Allocated memory is still 230.7MB. Free memory was 205.3MB in the beginning and 193.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 528.88ms. Allocated memory is still 230.7MB. Free memory was 193.2MB in the beginning and 158.6MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 53]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 48, overapproximation of bitwiseAnd at line 36. Possible FailurePath: [L48] float x = -1.0f / 0.0f; [L49] CALL, EXPR fabs_float(x) [L14] __uint32_t ix; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (ix) = gf_u.word [L21] ieee_float_shape_type sf_u; [L22] sf_u.word = (ix & 0x7fffffff) [L23] EXPR sf_u.value [L23] (x) = sf_u.value [L25] return x; [L49] RET, EXPR fabs_float(x) [L49] float res = fabs_float(x); [L52] CALL, EXPR isinf_float(res) [L30] __int32_t ix; [L32] ieee_float_shape_type gf_u; [L33] gf_u.value = (x) [L34] EXPR gf_u.word [L34] (ix) = gf_u.word [L36] ix &= 0x7fffffff [L37] return ((ix) == 0x7f800000L); [L52] RET, EXPR isinf_float(res) [L52] COND TRUE !isinf_float(res) [L53] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29 IncrementalHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 25 mSDtfsCounter, 29 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 5, 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 [2022-02-01 00:20:41,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...