/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/float_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:44:45,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:44:45,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:44:45,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:44:45,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:44:45,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:44:45,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:44:45,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:44:45,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:44:45,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:44:45,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:44:45,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:44:45,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:44:45,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:44:45,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:44:45,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:44:45,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:44:45,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:44:45,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:44:45,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:44:45,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:44:45,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:44:45,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:44:45,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:44:45,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 15:44:45,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:44:45,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:44:45,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:44:45,938 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 15:44:45,965 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:44:45,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:44:45,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:44:45,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:44:45,967 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:44:45,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:44:45,967 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:44:45,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:44:45,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:44:45,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:44:45,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:44:45,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:44:45,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:44:45,970 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:44:45,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:44:45,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:44:45,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:44:45,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:44:45,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:44:45,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:44:45,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:44:45,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:44:45,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:44:45,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:44:45,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:44:45,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:44:45,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:45,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:44:45,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:44:45,973 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 15:44:46,241 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:44:46,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:44:46,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:44:46,265 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:44:46,268 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:44:46,268 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-07-21 15:44:46,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43fb2e556/c127016c1b01415a99e1489f6577de04/FLAG228947f1b [2020-07-21 15:44:46,819 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:44:46,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-07-21 15:44:46,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43fb2e556/c127016c1b01415a99e1489f6577de04/FLAG228947f1b [2020-07-21 15:44:47,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43fb2e556/c127016c1b01415a99e1489f6577de04 [2020-07-21 15:44:47,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:44:47,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:44:47,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:44:47,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:44:47,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:44:47,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:44:47" (1/1) ... [2020-07-21 15:44:47,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3810f21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:47, skipping insertion in model container [2020-07-21 15:44:47,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:44:47" (1/1) ... [2020-07-21 15:44:47,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:44:47,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:44:47,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:44:47,486 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:44:47,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:44:47,642 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:44:47,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:47 WrapperNode [2020-07-21 15:44:47,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:44:47,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:44:47,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:44:47,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:44:47,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:47" (1/1) ... [2020-07-21 15:44:47,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:47" (1/1) ... [2020-07-21 15:44:47,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:47" (1/1) ... [2020-07-21 15:44:47,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:47" (1/1) ... [2020-07-21 15:44:47,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:47" (1/1) ... [2020-07-21 15:44:47,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:47" (1/1) ... [2020-07-21 15:44:47,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:47" (1/1) ... [2020-07-21 15:44:47,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:44:47,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:44:47,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:44:47,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:44:47,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:47" (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 15:44:47,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:44:47,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:44:47,760 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-21 15:44:47,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-07-21 15:44:47,761 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:44:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:44:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-21 15:44:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-21 15:44:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 15:44:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 15:44:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 15:44:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 15:44:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 15:44:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 15:44:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-07-21 15:44:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:44:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:44:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 15:44:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:44:48,257 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:44:48,257 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-21 15:44:48,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:44:48 BoogieIcfgContainer [2020-07-21 15:44:48,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:44:48,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:44:48,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:44:48,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:44:48,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:44:47" (1/3) ... [2020-07-21 15:44:48,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bac8fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:44:48, skipping insertion in model container [2020-07-21 15:44:48,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:47" (2/3) ... [2020-07-21 15:44:48,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bac8fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:44:48, skipping insertion in model container [2020-07-21 15:44:48,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:44:48" (3/3) ... [2020-07-21 15:44:48,269 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-07-21 15:44:48,279 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:44:48,287 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:44:48,301 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:44:48,322 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:44:48,322 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:44:48,322 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:44:48,323 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:44:48,323 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:44:48,323 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:44:48,323 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:44:48,323 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:44:48,341 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-07-21 15:44:48,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 15:44:48,347 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:44:48,348 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 15:44:48,349 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:44:48,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:44:48,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-07-21 15:44:48,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:44:48,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136999593] [2020-07-21 15:44:48,360 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 15:44:48,509 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:44:48,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:44:48,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 15:44:48,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:44:48,537 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 15:44:48,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:44:48,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136999593] [2020-07-21 15:44:48,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:44:48,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 15:44:48,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471310072] [2020-07-21 15:44:48,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 15:44:48,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:44:48,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 15:44:48,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:44:48,563 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-07-21 15:44:48,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:44:48,591 INFO L93 Difference]: Finished difference Result 113 states and 177 transitions. [2020-07-21 15:44:48,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 15:44:48,593 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-21 15:44:48,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:44:48,607 INFO L225 Difference]: With dead ends: 113 [2020-07-21 15:44:48,608 INFO L226 Difference]: Without dead ends: 56 [2020-07-21 15:44:48,612 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 15:44:48,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-21 15:44:48,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-21 15:44:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-21 15:44:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-07-21 15:44:48,672 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-07-21 15:44:48,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:44:48,673 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-07-21 15:44:48,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 15:44:48,673 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-07-21 15:44:48,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 15:44:48,676 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:44:48,676 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 15:44:48,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:48,890 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:44:48,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:44:48,891 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-07-21 15:44:48,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:44:48,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825148097] [2020-07-21 15:44:48,893 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 15:44:48,967 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:44:48,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 15:44:48,968 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:44:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 15:44:48,992 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:44:49,019 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 15:44:49,019 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 15:44:49,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:49,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:44:49 BoogieIcfgContainer [2020-07-21 15:44:49,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 15:44:49,270 INFO L168 Benchmark]: Toolchain (without parser) took 2028.05 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 102.5 MB in the beginning and 99.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 59.3 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:49,271 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 15:44:49,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.71 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 102.0 MB in the beginning and 178.2 MB in the end (delta: -76.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:49,273 INFO L168 Benchmark]: Boogie Preprocessor took 52.61 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 175.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:49,274 INFO L168 Benchmark]: RCFGBuilder took 565.33 ms. Allocated memory is still 201.9 MB. Free memory was 175.5 MB in the beginning and 147.3 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:49,275 INFO L168 Benchmark]: TraceAbstraction took 1004.16 ms. Allocated memory is still 201.9 MB. Free memory was 146.6 MB in the beginning and 99.8 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:49,282 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 399.71 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 102.0 MB in the beginning and 178.2 MB in the end (delta: -76.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.61 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 175.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 565.33 ms. Allocated memory is still 201.9 MB. Free memory was 175.5 MB in the beginning and 147.3 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1004.16 ms. Allocated memory is still 201.9 MB. Free memory was 146.6 MB in the beginning and 99.8 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=9, \old(Zero_fmod)=6, one_fmod=1, Zero_fmod={3:0}] [L126] float x = 0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=8, Zero_fmod={3:0}] [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=8, one_fmod=1, Zero_fmod={3:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=8, one_fmod=1, x=0, y=8, Zero_fmod={3:0}] [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=8, one_fmod=1, sx=30612, x=0, y=8, Zero_fmod={3:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=8, hx=0, hy=2139095041, one_fmod=1, sx=30612, x=0, y=8, Zero_fmod={3:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=9, one_fmod=1, x=0, y=8, Zero_fmod={3:0}] [L131] float res = fmod_float(x, y); [L134] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, res=9, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=8, Zero_fmod={3:0}] [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L135] __VERIFIER_error() VAL [one_fmod=1, res=9, x=0, y=8, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 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: 78 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=61occurred 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...