/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 BIGGEST_EQUIVALENCE_CLASS --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/double_req_bl_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:02:01,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:02:01,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:02:01,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:02:01,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:02:01,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:02:01,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:02:01,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:02:01,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:02:01,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:02:01,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:02:01,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:02:01,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:02:01,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:02:01,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:02:01,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:02:01,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:02:01,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:02:01,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:02:01,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:02:01,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:02:01,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:02:01,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:02:01,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:02:01,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:02:01,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:02:01,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:02:01,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:02:01,565 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 22:02:01,602 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:02:01,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:02:01,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:02:01,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:02:01,607 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:02:01,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:02:01,607 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:02:01,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:02:01,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:02:01,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:02:01,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:02:01,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:02:01,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:02:01,612 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:02:01,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:02:01,612 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:02:01,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:02:01,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:02:01,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:02:01,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:02:01,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:02:01,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:02:01,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:02:01,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:02:01,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:02:01,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:02:01,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:01,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:02:01,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:02:01,615 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 -> BIGGEST_EQUIVALENCE_CLASS 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 [2020-07-21 22:02:01,893 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:02:01,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:02:01,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:02:01,914 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:02:01,914 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:02:01,916 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-07-21 22:02:01,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8e232227/5913468c5e7940d99ddc18726b5599a5/FLAG737b0866f [2020-07-21 22:02:02,501 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:02:02,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-07-21 22:02:02,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8e232227/5913468c5e7940d99ddc18726b5599a5/FLAG737b0866f [2020-07-21 22:02:02,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8e232227/5913468c5e7940d99ddc18726b5599a5 [2020-07-21 22:02:02,846 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:02:02,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:02:02,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:02:02,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:02:02,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:02:02,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:02" (1/1) ... [2020-07-21 22:02:02,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@81043bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:02, skipping insertion in model container [2020-07-21 22:02:02,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:02" (1/1) ... [2020-07-21 22:02:02,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:02:02,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:02:03,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:02:03,089 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:02:03,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:02:03,225 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:02:03,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:03 WrapperNode [2020-07-21 22:02:03,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:02:03,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:02:03,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:02:03,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:02:03,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:03" (1/1) ... [2020-07-21 22:02:03,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:03" (1/1) ... [2020-07-21 22:02:03,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:03" (1/1) ... [2020-07-21 22:02:03,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:03" (1/1) ... [2020-07-21 22:02:03,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:03" (1/1) ... [2020-07-21 22:02:03,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:03" (1/1) ... [2020-07-21 22:02:03,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:03" (1/1) ... [2020-07-21 22:02:03,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:02:03,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:02:03,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:02:03,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:02:03,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:03" (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 22:02:03,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:02:03,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:02:03,339 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-07-21 22:02:03,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-21 22:02:03,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:02:03,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:02:03,340 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-07-21 22:02:03,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 22:02:03,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 22:02:03,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 22:02:03,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 22:02:03,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 22:02:03,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 22:02:03,341 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-21 22:02:03,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:02:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:02:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:02:03,768 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:02:03,768 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-21 22:02:03,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:03 BoogieIcfgContainer [2020-07-21 22:02:03,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:02:03,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:02:03,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:02:03,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:02:03,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:02:02" (1/3) ... [2020-07-21 22:02:03,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300f0e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:03, skipping insertion in model container [2020-07-21 22:02:03,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:03" (2/3) ... [2020-07-21 22:02:03,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300f0e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:03, skipping insertion in model container [2020-07-21 22:02:03,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:03" (3/3) ... [2020-07-21 22:02:03,781 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-07-21 22:02:03,792 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:02:03,800 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:02:03,815 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:02:03,840 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:02:03,840 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:02:03,840 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:02:03,840 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:02:03,840 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:02:03,840 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:02:03,841 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:02:03,841 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:02:03,857 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-07-21 22:02:03,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 22:02:03,864 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:03,865 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 22:02:03,865 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:03,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:03,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-07-21 22:02:03,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:03,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619244934] [2020-07-21 22:02:03,879 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 [2020-07-21 22:02:04,014 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:02:04,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:04,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 22:02:04,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:04,055 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 22:02:04,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:02:04,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619244934] [2020-07-21 22:02:04,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:02:04,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 22:02:04,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378791574] [2020-07-21 22:02:04,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 22:02:04,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:04,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 22:02:04,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:02:04,076 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2020-07-21 22:02:04,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:04,103 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-07-21 22:02:04,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 22:02:04,104 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-21 22:02:04,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:04,113 INFO L225 Difference]: With dead ends: 94 [2020-07-21 22:02:04,114 INFO L226 Difference]: Without dead ends: 47 [2020-07-21 22:02:04,118 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 22:02:04,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-21 22:02:04,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-07-21 22:02:04,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-21 22:02:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-07-21 22:02:04,182 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-07-21 22:02:04,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:04,183 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-07-21 22:02:04,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 22:02:04,183 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-07-21 22:02:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 22:02:04,185 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:04,185 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] [2020-07-21 22:02:04,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:04,400 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:04,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:04,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-07-21 22:02:04,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:04,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548438667] [2020-07-21 22:02:04,403 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 [2020-07-21 22:02:04,496 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:02:04,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 22:02:04,496 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:02:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 22:02:04,514 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:02:04,538 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 22:02:04,538 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 22:02:04,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:04,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:02:04 BoogieIcfgContainer [2020-07-21 22:02:04,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:02:04,786 INFO L168 Benchmark]: Toolchain (without parser) took 1937.69 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 101.9 MB in the beginning and 115.4 MB in the end (delta: -13.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:04,787 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 138.9 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 22:02:04,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.13 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 101.4 MB in the beginning and 182.9 MB in the end (delta: -81.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:04,789 INFO L168 Benchmark]: Boogie Preprocessor took 45.99 ms. Allocated memory is still 203.9 MB. Free memory was 182.9 MB in the beginning and 179.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:04,790 INFO L168 Benchmark]: RCFGBuilder took 500.97 ms. Allocated memory is still 203.9 MB. Free memory was 179.9 MB in the beginning and 156.6 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:04,791 INFO L168 Benchmark]: TraceAbstraction took 1009.50 ms. Allocated memory is still 203.9 MB. Free memory was 156.0 MB in the beginning and 115.4 MB in the end (delta: 40.6 MB). Peak memory consumption was 40.6 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:04,795 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 138.9 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 376.13 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 101.4 MB in the beginning and 182.9 MB in the end (delta: -81.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.99 ms. Allocated memory is still 203.9 MB. Free memory was 182.9 MB in the beginning and 179.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 500.97 ms. Allocated memory is still 203.9 MB. Free memory was 179.9 MB in the beginning and 156.6 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1009.50 ms. Allocated memory is still 203.9 MB. Free memory was 156.0 MB in the beginning and 115.4 MB in the end (delta: 40.6 MB). Peak memory consumption was 40.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 103]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [\old(huge_floor)=0, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L98] double x = -0.0; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L99] CALL, EXPR floor_double(x) VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=8855, x=4] [L26] COND TRUE j0 < 20 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=8855, j0=0, x=4] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=8855, j0=0, x=4] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [\old(x)=4, \result=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=8855, j0=0, x=4] [L99] RET, EXPR floor_double(x) VAL [floor_double(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=4, res == -0.0 && __signbit_double(res) == 1=0, x=4] [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=4, x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 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: 66 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=51occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 39 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 51 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...