/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:44:27,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:44:27,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:44:27,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:44:27,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:44:27,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:44:27,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:44:27,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:44:27,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:44:27,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:44:27,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:44:27,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:44:27,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:44:27,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:44:27,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:44:27,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:44:27,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:44:27,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:44:27,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:44:27,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:44:27,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:44:27,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:44:27,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:44:27,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:44:27,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 15:44:27,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:44:27,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:44:27,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:44:27,730 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 15:44:27,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:44:27,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:44:27,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:44:27,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:44:27,754 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:44:27,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:44:27,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:44:27,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:44:27,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:44:27,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:44:27,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:44:27,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:44:27,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:44:27,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:44:27,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:44:27,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:44:27,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:44:27,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:44:27,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:44:27,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:44:27,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:44:27,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:44:27,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:44:27,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:44:27,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:44:27,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:44:27,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:27,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:44:27,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:44:27,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 15:44:28,026 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:44:28,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:44:28,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:44:28,044 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:44:28,045 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:44:28,046 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-21 15:44:28,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/720fb63d1/7ff3791bceb94847b800942fcd87473f/FLAG2d7b4a13a [2020-07-21 15:44:28,577 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:44:28,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-21 15:44:28,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/720fb63d1/7ff3791bceb94847b800942fcd87473f/FLAG2d7b4a13a [2020-07-21 15:44:28,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/720fb63d1/7ff3791bceb94847b800942fcd87473f [2020-07-21 15:44:28,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:44:28,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:44:28,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:44:28,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:44:28,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:44:28,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:44:28" (1/1) ... [2020-07-21 15:44:28,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2efca680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:28, skipping insertion in model container [2020-07-21 15:44:28,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:44:28" (1/1) ... [2020-07-21 15:44:28,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:44:28,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:44:29,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:44:29,305 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:44:29,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:44:29,512 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:44:29,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:29 WrapperNode [2020-07-21 15:44:29,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:44:29,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:44:29,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:44:29,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:44:29,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:29" (1/1) ... [2020-07-21 15:44:29,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:29" (1/1) ... [2020-07-21 15:44:29,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:29" (1/1) ... [2020-07-21 15:44:29,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:29" (1/1) ... [2020-07-21 15:44:29,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:29" (1/1) ... [2020-07-21 15:44:29,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:29" (1/1) ... [2020-07-21 15:44:29,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:29" (1/1) ... [2020-07-21 15:44:29,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:44:29,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:44:29,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:44:29,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:44:29,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:44:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:44:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:44:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 15:44:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-21 15:44:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-21 15:44:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:44:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:44:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 15:44:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 15:44:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-21 15:44:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 15:44:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 15:44:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 15:44:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 15:44:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 15:44:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 15:44:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-21 15:44:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:44:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:44:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 15:44:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:44:30,216 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:44:30,216 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-21 15:44:30,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:44:30 BoogieIcfgContainer [2020-07-21 15:44:30,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:44:30,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:44:30,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:44:30,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:44:30,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:44:28" (1/3) ... [2020-07-21 15:44:30,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682a37db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:44:30, skipping insertion in model container [2020-07-21 15:44:30,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:29" (2/3) ... [2020-07-21 15:44:30,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682a37db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:44:30, skipping insertion in model container [2020-07-21 15:44:30,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:44:30" (3/3) ... [2020-07-21 15:44:30,234 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-07-21 15:44:30,246 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:44:30,256 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:44:30,267 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:44:30,289 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:44:30,290 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:44:30,290 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:44:30,290 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:44:30,290 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:44:30,291 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:44:30,291 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:44:30,291 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:44:30,312 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-21 15:44:30,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 15:44:30,320 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:44:30,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:44:30,321 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:44:30,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:44:30,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-07-21 15:44:30,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:44:30,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690555777] [2020-07-21 15:44:30,335 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:30,442 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:44:30,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:44:30,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 15:44:30,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:44:30,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:44:30,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:44:30,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690555777] [2020-07-21 15:44:30,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:44:30,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 15:44:30,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046439135] [2020-07-21 15:44:30,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 15:44:30,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:44:30,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 15:44:30,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:44:30,499 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-07-21 15:44:30,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:44:30,533 INFO L93 Difference]: Finished difference Result 139 states and 229 transitions. [2020-07-21 15:44:30,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 15:44:30,535 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-21 15:44:30,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:44:30,546 INFO L225 Difference]: With dead ends: 139 [2020-07-21 15:44:30,546 INFO L226 Difference]: Without dead ends: 69 [2020-07-21 15:44:30,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:44:30,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-21 15:44:30,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-07-21 15:44:30,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-21 15:44:30,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-07-21 15:44:30,600 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-07-21 15:44:30,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:44:30,601 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-07-21 15:44:30,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 15:44:30,601 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-07-21 15:44:30,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 15:44:30,605 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:44:30,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:44:30,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:30,819 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:44:30,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:44:30,821 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-07-21 15:44:30,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:44:30,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041145918] [2020-07-21 15:44:30,822 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:30,913 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:44:30,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 15:44:30,914 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:44:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 15:44:30,943 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:44:30,974 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 15:44:30,975 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 15:44:31,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:31,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:44:31 BoogieIcfgContainer [2020-07-21 15:44:31,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 15:44:31,251 INFO L168 Benchmark]: Toolchain (without parser) took 2302.29 ms. Allocated memory was 138.9 MB in the beginning and 235.9 MB in the end (delta: 97.0 MB). Free memory was 102.9 MB in the beginning and 205.8 MB in the end (delta: -102.9 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:31,252 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 121.8 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 15:44:31,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 562.74 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.5 MB in the beginning and 178.4 MB in the end (delta: -76.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:31,254 INFO L168 Benchmark]: Boogie Preprocessor took 58.89 ms. Allocated memory is still 203.4 MB. Free memory was 178.4 MB in the beginning and 175.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:31,255 INFO L168 Benchmark]: RCFGBuilder took 650.05 ms. Allocated memory is still 203.4 MB. Free memory was 175.7 MB in the beginning and 139.7 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:31,256 INFO L168 Benchmark]: TraceAbstraction took 1024.39 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 139.0 MB in the beginning and 205.8 MB in the end (delta: -66.7 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:31,260 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 121.8 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 562.74 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.5 MB in the beginning and 178.4 MB in the end (delta: -76.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.89 ms. Allocated memory is still 203.4 MB. Free memory was 178.4 MB in the beginning and 175.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 650.05 ms. Allocated memory is still 203.4 MB. Free memory was 175.7 MB in the beginning and 139.7 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1024.39 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 139.0 MB in the beginning and 205.8 MB in the end (delta: -66.7 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=9, \old(Zero_fmod)=7, one_fmod=1, Zero_fmod={2:0}] [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 VAL [one_fmod=1, x=0, y=3, Zero_fmod={2:0}] [L187] CALL, EXPR fmod_double(x, y) VAL [\old(x)=0, \old(y)=3, one_fmod=1, Zero_fmod={2:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [\old(x)=0, \old(y)=3, one_fmod=1, x=0, y=3, Zero_fmod={2:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=3, lx=13, ly=17, one_fmod=1, sx=15921, x=0, y=3, Zero_fmod={2:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=3, hx=0, lx=13, ly=17, one_fmod=1, sx=15921, x=0, y=3, Zero_fmod={2:0}] [L187] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=5, one_fmod=1, x=0, y=3, Zero_fmod={2:0}] [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, res=5, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=3, Zero_fmod={2:0}] [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() VAL [one_fmod=1, res=5, x=0, y=3, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 89 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...