/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 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 16:27:40,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 16:27:40,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 16:27:40,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 16:27:40,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 16:27:40,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 16:27:40,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 16:27:40,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 16:27:40,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 16:27:40,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 16:27:40,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 16:27:40,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 16:27:40,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 16:27:40,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 16:27:40,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 16:27:40,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 16:27:40,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 16:27:40,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 16:27:40,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 16:27:40,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 16:27:40,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 16:27:40,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 16:27:40,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 16:27:40,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 16:27:40,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 16:27:40,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 16:27:40,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 16:27:40,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 16:27:40,937 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 [2020-07-20 16:27:40,952 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 16:27:40,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 16:27:40,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 16:27:40,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 16:27:40,954 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 16:27:40,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 16:27:40,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 16:27:40,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 16:27:40,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 16:27:40,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 16:27:40,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 16:27:40,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 16:27:40,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 16:27:40,956 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 16:27:40,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 16:27:40,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 16:27:40,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 16:27:40,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 16:27:40,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 16:27:40,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 16:27:40,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 16:27:40,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:27:40,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 16:27:40,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 16:27:40,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 16:27:40,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 16:27:40,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:40,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 16:27:40,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 16:27:40,959 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 -> 4 [2020-07-20 16:27:41,302 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 16:27:41,320 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 16:27:41,324 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 16:27:41,326 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 16:27:41,327 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 16:27:41,327 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1051.c [2020-07-20 16:27:41,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d15940f/991cd35ea5984e54bdeacb00ad9ca9e0/FLAG74d790f11 [2020-07-20 16:27:41,861 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 16:27:41,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1051.c [2020-07-20 16:27:41,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d15940f/991cd35ea5984e54bdeacb00ad9ca9e0/FLAG74d790f11 [2020-07-20 16:27:42,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d15940f/991cd35ea5984e54bdeacb00ad9ca9e0 [2020-07-20 16:27:42,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 16:27:42,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 16:27:42,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 16:27:42,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 16:27:42,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 16:27:42,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:42" (1/1) ... [2020-07-20 16:27:42,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708f3ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:42, skipping insertion in model container [2020-07-20 16:27:42,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:42" (1/1) ... [2020-07-20 16:27:42,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 16:27:42,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 16:27:42,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:27:42,502 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 16:27:42,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:27:42,644 INFO L208 MainTranslator]: Completed translation [2020-07-20 16:27:42,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:42 WrapperNode [2020-07-20 16:27:42,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 16:27:42,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 16:27:42,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 16:27:42,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 16:27:42,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:42" (1/1) ... [2020-07-20 16:27:42,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:42" (1/1) ... [2020-07-20 16:27:42,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:42" (1/1) ... [2020-07-20 16:27:42,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:42" (1/1) ... [2020-07-20 16:27:42,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:42" (1/1) ... [2020-07-20 16:27:42,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:42" (1/1) ... [2020-07-20 16:27:42,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:42" (1/1) ... [2020-07-20 16:27:42,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 16:27:42,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 16:27:42,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 16:27:42,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 16:27:42,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:42" (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 [2020-07-20 16:27:42,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 16:27:42,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 16:27:42,768 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-07-20 16:27:42,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-07-20 16:27:42,769 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 16:27:42,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 16:27:42,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-20 16:27:42,770 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-07-20 16:27:42,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 16:27:42,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 16:27:42,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 16:27:42,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 16:27:42,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 16:27:42,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 16:27:42,772 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-07-20 16:27:42,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 16:27:42,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 16:27:42,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 16:27:43,091 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 16:27:43,092 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 16:27:43,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:43 BoogieIcfgContainer [2020-07-20 16:27:43,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 16:27:43,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 16:27:43,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 16:27:43,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 16:27:43,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:27:42" (1/3) ... [2020-07-20 16:27:43,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473d6a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:43, skipping insertion in model container [2020-07-20 16:27:43,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:42" (2/3) ... [2020-07-20 16:27:43,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473d6a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:43, skipping insertion in model container [2020-07-20 16:27:43,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:43" (3/3) ... [2020-07-20 16:27:43,106 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2020-07-20 16:27:43,119 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 16:27:43,128 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 16:27:43,157 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 16:27:43,190 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 16:27:43,191 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 16:27:43,191 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 16:27:43,191 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 16:27:43,191 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 16:27:43,191 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 16:27:43,192 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 16:27:43,192 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 16:27:43,213 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-07-20 16:27:43,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 16:27:43,220 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:27:43,221 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, 1] [2020-07-20 16:27:43,222 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:27:43,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:27:43,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1361541252, now seen corresponding path program 1 times [2020-07-20 16:27:43,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:27:43,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440068883] [2020-07-20 16:27:43,236 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:27:43,338 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:27:43,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:27:43,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 16:27:43,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:27:43,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:27:43,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:27:43,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440068883] [2020-07-20 16:27:43,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:27:43,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 16:27:43,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573191830] [2020-07-20 16:27:43,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 16:27:43,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:27:43,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 16:27:43,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:27:43,391 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-07-20 16:27:43,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:27:43,412 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2020-07-20 16:27:43,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 16:27:43,413 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-07-20 16:27:43,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:27:43,423 INFO L225 Difference]: With dead ends: 70 [2020-07-20 16:27:43,424 INFO L226 Difference]: Without dead ends: 35 [2020-07-20 16:27:43,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:27:43,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-20 16:27:43,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-20 16:27:43,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-20 16:27:43,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-07-20 16:27:43,466 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 22 [2020-07-20 16:27:43,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:27:43,467 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-07-20 16:27:43,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 16:27:43,467 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-07-20 16:27:43,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 16:27:43,469 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:27:43,469 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, 1, 1] [2020-07-20 16:27:43,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:43,685 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:27:43,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:27:43,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1541897397, now seen corresponding path program 1 times [2020-07-20 16:27:43,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:27:43,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081195757] [2020-07-20 16:27:43,688 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:27:43,768 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:27:43,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 16:27:43,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:27:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 16:27:43,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:27:43,818 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 16:27:43,818 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 16:27:44,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:44,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:27:44 BoogieIcfgContainer [2020-07-20 16:27:44,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 16:27:44,069 INFO L168 Benchmark]: Toolchain (without parser) took 1811.86 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.4 MB in the beginning and 118.6 MB in the end (delta: -17.2 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:44,070 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 16:27:44,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.96 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 180.8 MB in the end (delta: -79.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:44,072 INFO L168 Benchmark]: Boogie Preprocessor took 47.02 ms. Allocated memory is still 201.9 MB. Free memory was 180.8 MB in the beginning and 178.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:44,073 INFO L168 Benchmark]: RCFGBuilder took 404.24 ms. Allocated memory is still 201.9 MB. Free memory was 178.4 MB in the beginning and 159.4 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:44,074 INFO L168 Benchmark]: TraceAbstraction took 967.45 ms. Allocated memory is still 201.9 MB. Free memory was 158.8 MB in the beginning and 118.6 MB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:44,079 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 386.96 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 180.8 MB in the end (delta: -79.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.02 ms. Allocated memory is still 201.9 MB. Free memory was 180.8 MB in the beginning and 178.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.24 ms. Allocated memory is still 201.9 MB. Free memory was 178.4 MB in the beginning and 159.4 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 967.45 ms. Allocated memory is still 201.9 MB. Free memory was 158.8 MB in the beginning and 118.6 MB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 71]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 58, overapproximation of someBinaryArithmeticFLOAToperation at line 45, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; VAL [\old(huge_floor)=0, huge_floor=1000000000000000000000000000000] [L66] float x = 0.0f / 0.0f; VAL [huge_floor=1000000000000000000000000000000] [L67] CALL, EXPR floor_float(x) VAL [\old(x)=4, huge_floor=1000000000000000000000000000000] [L15] __int32_t i0, j0; [L16] __uint32_t i, ix; VAL [\old(x)=4, huge_floor=1000000000000000000000000000000, x=4] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (i0) = gf_u.word [L22] ix = (i0 & 0x7fffffff) [L23] j0 = (ix >> 23) - 0x7f VAL [\old(x)=4, huge_floor=1000000000000000000000000000000, i=-36028794879868928, i0=1142, j0=128, x=4] [L24] COND FALSE !(j0 < 23) VAL [\old(x)=4, huge_floor=1000000000000000000000000000000, i=-36028794879868928, i0=1142, j0=128, x=4] [L44] COND TRUE !((ix) < 0x7f800000L) [L45] return x + x; VAL [\old(x)=4, huge_floor=1000000000000000000000000000000, i=-36028794879868928, i0=1142, j0=128, x=4] [L67] RET, EXPR floor_float(x) VAL [floor_float(x)=5, huge_floor=1000000000000000000000000000000, x=4] [L67] float res = floor_float(x); [L70] CALL, EXPR isnan_float(res) VAL [\old(x)=5, huge_floor=1000000000000000000000000000000] [L58] return x != x; VAL [\old(x)=5, \result=0, huge_floor=1000000000000000000000000000000, x=5] [L70] RET, EXPR isnan_float(res) VAL [huge_floor=1000000000000000000000000000000, isnan_float(res)=0, res=5, x=4] [L70] COND TRUE !isnan_float(res) [L71] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000, res=5, x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 45 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 69 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...