/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/double_req_bl_0490a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:17:59,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:17:59,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:17:59,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-01 00:17:59,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-01 00:17:59,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-01 00:17:59,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-01 00:17:59,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-01 00:17:59,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-01 00:17:59,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-01 00:17:59,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-01 00:17:59,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-01 00:17:59,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:17:59,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:17:59,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:17:59,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:17:59,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:17:59,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:17:59,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:17:59,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:17:59,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:17:59,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:17:59,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:17:59,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:17:59,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-01 00:17:59,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:17:59,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:17:59,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:17:59,566 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 00:17:59,572 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:17:59,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:17:59,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:17:59,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:17:59,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:17:59,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:17:59,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:17:59,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:17:59,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:17:59,574 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:17:59,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:17:59,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:17:59,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:17:59,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:17:59,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:17:59,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:17:59,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:17:59,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:17:59,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:17:59,575 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:17:59,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:17:59,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:17:59,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:17:59,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:17:59,818 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:17:59,818 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:17:59,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0490a.c [2022-02-01 00:17:59,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c4c86963/ffb602c9617d409da3822adfd7b0f8a6/FLAG15c69fdae [2022-02-01 00:18:00,262 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:18:00,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0490a.c [2022-02-01 00:18:00,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c4c86963/ffb602c9617d409da3822adfd7b0f8a6/FLAG15c69fdae [2022-02-01 00:18:00,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c4c86963/ffb602c9617d409da3822adfd7b0f8a6 [2022-02-01 00:18:00,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:18:00,293 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:18:00,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:18:00,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:18:00,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:18:00,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:18:00" (1/1) ... [2022-02-01 00:18:00,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121e8801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:00, skipping insertion in model container [2022-02-01 00:18:00,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:18:00" (1/1) ... [2022-02-01 00:18:00,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:18:00,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:18:00,580 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/double_req_bl_0490a.c[9221,9234] [2022-02-01 00:18:00,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:18:00,588 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:18:00,669 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/double_req_bl_0490a.c[9221,9234] [2022-02-01 00:18:00,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:18:00,686 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:18:00,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:00 WrapperNode [2022-02-01 00:18:00,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:18:00,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:18:00,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:18:00,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:18:00,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:00" (1/1) ... [2022-02-01 00:18:00,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:00" (1/1) ... [2022-02-01 00:18:00,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:00" (1/1) ... [2022-02-01 00:18:00,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:00" (1/1) ... [2022-02-01 00:18:00,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:00" (1/1) ... [2022-02-01 00:18:00,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:00" (1/1) ... [2022-02-01 00:18:00,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:00" (1/1) ... [2022-02-01 00:18:00,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:18:00,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:18:00,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:18:00,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:18:00,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:00" (1/1) ... [2022-02-01 00:18:00,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:18:00,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:18:00,818 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 00:18:00,821 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 00:18:00,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:18:00,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:18:00,874 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:18:00,875 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2022-02-01 00:18:00,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2022-02-01 00:18:00,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2022-02-01 00:18:00,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2022-02-01 00:18:00,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2022-02-01 00:18:00,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isinteger_double [2022-02-01 00:18:00,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2022-02-01 00:18:00,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2022-02-01 00:18:00,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_acos [2022-02-01 00:18:00,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:18:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:18:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:18:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:18:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:18:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2022-02-01 00:18:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:18:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:18:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:18:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:18:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:18:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:18:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2022-02-01 00:18:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2022-02-01 00:18:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2022-02-01 00:18:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2022-02-01 00:18:00,881 INFO L130 BoogieDeclarations]: Found specification of procedure isinteger_double [2022-02-01 00:18:00,881 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2022-02-01 00:18:00,881 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2022-02-01 00:18:00,881 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_acos [2022-02-01 00:18:00,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:18:00,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:18:00,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:18:00,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:18:01,032 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:18:01,038 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:18:01,437 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:18:01,443 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:18:01,443 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2022-02-01 00:18:01,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:18:01 BoogieIcfgContainer [2022-02-01 00:18:01,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:18:01,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:18:01,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:18:01,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:18:01,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:18:00" (1/3) ... [2022-02-01 00:18:01,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b27ec60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:18:01, skipping insertion in model container [2022-02-01 00:18:01,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:00" (2/3) ... [2022-02-01 00:18:01,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b27ec60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:18:01, skipping insertion in model container [2022-02-01 00:18:01,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:18:01" (3/3) ... [2022-02-01 00:18:01,452 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0490a.c [2022-02-01 00:18:01,457 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:18:01,457 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:18:01,497 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:18:01,506 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 00:18:01,506 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:18:01,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 70 states have (on average 1.6) internal successors, (112), 71 states have internal predecessors, (112), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-01 00:18:01,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-01 00:18:01,544 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:18:01,544 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 00:18:01,545 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:18:01,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:18:01,551 INFO L85 PathProgramCache]: Analyzing trace with hash -935451291, now seen corresponding path program 1 times [2022-02-01 00:18:01,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:18:01,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518039909] [2022-02-01 00:18:01,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:18:01,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:18:01,622 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:18:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:18:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:18:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:18:01,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:18:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:18:01,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-01 00:18:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:18:01,914 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 00:18:01,915 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:18:01,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518039909] [2022-02-01 00:18:01,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1518039909] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:18:01,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:18:01,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:18:01,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893447807] [2022-02-01 00:18:01,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:18:01,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:18:01,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:18:01,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:18:01,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:18:01,982 INFO L87 Difference]: Start difference. First operand has 83 states, 70 states have (on average 1.6) internal successors, (112), 71 states have internal predecessors, (112), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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 00:18:02,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:18:02,569 INFO L93 Difference]: Finished difference Result 158 states and 242 transitions. [2022-02-01 00:18:02,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:18:02,571 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 00:18:02,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:18:02,579 INFO L225 Difference]: With dead ends: 158 [2022-02-01 00:18:02,579 INFO L226 Difference]: Without dead ends: 79 [2022-02-01 00:18:02,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-01 00:18:02,594 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 98 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-01 00:18:02,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 104 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-01 00:18:02,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-02-01 00:18:02,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-02-01 00:18:02,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 68 states have (on average 1.3823529411764706) internal successors, (94), 68 states have internal predecessors, (94), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-01 00:18:02,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 105 transitions. [2022-02-01 00:18:02,710 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 105 transitions. Word has length 23 [2022-02-01 00:18:02,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:18:02,711 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 105 transitions. [2022-02-01 00:18:02,711 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 00:18:02,712 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 105 transitions. [2022-02-01 00:18:02,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-01 00:18:02,715 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:18:02,715 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] [2022-02-01 00:18:02,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:18:02,716 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:18:02,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:18:02,717 INFO L85 PathProgramCache]: Analyzing trace with hash 838649959, now seen corresponding path program 1 times [2022-02-01 00:18:02,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:18:02,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148513915] [2022-02-01 00:18:02,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:18:02,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:18:02,722 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:18:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:18:02,816 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:18:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:18:02,917 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:18:02,918 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:18:02,923 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:18:02,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:18:02,927 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:18:02,929 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:18:02,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:18:02 BoogieIcfgContainer [2022-02-01 00:18:02,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:18:02,965 INFO L158 Benchmark]: Toolchain (without parser) took 2671.43ms. Allocated memory was 232.8MB in the beginning and 389.0MB in the end (delta: 156.2MB). Free memory was 182.1MB in the beginning and 325.9MB in the end (delta: -143.9MB). Peak memory consumption was 13.5MB. Max. memory is 8.0GB. [2022-02-01 00:18:02,965 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 232.8MB. Free memory is still 199.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:18:02,966 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.59ms. Allocated memory was 232.8MB in the beginning and 389.0MB in the end (delta: 156.2MB). Free memory was 181.9MB in the beginning and 359.1MB in the end (delta: -177.2MB). Peak memory consumption was 8.1MB. Max. memory is 8.0GB. [2022-02-01 00:18:02,969 INFO L158 Benchmark]: Boogie Preprocessor took 77.49ms. Allocated memory is still 389.0MB. Free memory was 359.1MB in the beginning and 356.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-01 00:18:02,971 INFO L158 Benchmark]: RCFGBuilder took 679.31ms. Allocated memory is still 389.0MB. Free memory was 356.0MB in the beginning and 327.7MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-02-01 00:18:02,971 INFO L158 Benchmark]: TraceAbstraction took 1516.69ms. Allocated memory is still 389.0MB. Free memory was 327.2MB in the beginning and 325.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.2MB. Max. memory is 8.0GB. [2022-02-01 00:18:02,976 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 232.8MB. Free memory is still 199.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 383.59ms. Allocated memory was 232.8MB in the beginning and 389.0MB in the end (delta: 156.2MB). Free memory was 181.9MB in the beginning and 359.1MB in the end (delta: -177.2MB). Peak memory consumption was 8.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 77.49ms. Allocated memory is still 389.0MB. Free memory was 359.1MB in the beginning and 356.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 679.31ms. Allocated memory is still 389.0MB. Free memory was 356.0MB in the beginning and 327.7MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * TraceAbstraction took 1516.69ms. Allocated memory is still 389.0MB. Free memory was 327.2MB in the beginning and 325.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.2MB. 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: 379]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 287, overapproximation of someBinaryArithmeticDOUBLEoperation at line 323, overapproximation of bitwiseAnd at line 305, overapproximation of someBinaryDOUBLEComparisonOperation at line 103. Possible FailurePath: [L18] static const double huge_floor = 1.0e300; [L170] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L282-L295] static const double one_acos = 1.00000000000000000000e+00, pi = 3.14159265358979311600e+00, pio2_hi_acos = 1.57079632679489655800e+00, pio2_lo_acos = 6.12323399573676603587e-17, pS0_acos = 1.66666666666666657415e-01, pS1_acos = -3.25565818622400915405e-01, pS2_acos = 2.01212532134862925881e-01, pS3_acos = -4.00555345006794114027e-02, pS4_acos = 7.91534994289814532176e-04, pS5_acos = 3.47933107596021167570e-05, qS1_acos = -2.40339491173441421878e+00, qS2_acos = 2.02094576023350569471e+00, qS3_acos = -6.88283971605453293030e-01, qS4_acos = 7.70381505559019352791e-02; [L374] double x = 1.0 / 0.0; [L375] CALL, EXPR __ieee754_acos(x) [L298] double z, p, q, r, w, s, c, df; [L299] __int32_t hx, ix; [L301] ieee_double_shape_type gh_u; [L302] gh_u.value = (x) [L303] EXPR gh_u.parts.msw [L303] (hx) = gh_u.parts.msw [L305] ix = hx & 0x7fffffff [L306] COND FALSE !(ix >= 0x3ff00000) [L321] COND TRUE ix < 0x3fe00000 [L322] COND TRUE ix <= 0x3c600000 [L323] return pio2_hi_acos + pio2_lo_acos; [L375] RET, EXPR __ieee754_acos(x) [L375] double res = __ieee754_acos(x); [L378] CALL, EXPR isnan_double(res) [L103] return x != x; [L378] RET, EXPR isnan_double(res) [L378] COND TRUE !isnan_double(res) [L379] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 145 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 101 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 104 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 106 IncrementalHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 102 mSDtfsCounter, 106 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred 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: 0.1s 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 00:18:03,041 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...