/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 00:30:48,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 00:30:48,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 00:30:48,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 00:30:48,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 00:30:48,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 00:30:48,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 00:30:48,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 00:30:48,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 00:30:48,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 00:30:48,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 00:30:48,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 00:30:48,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 00:30:48,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 00:30:48,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 00:30:48,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 00:30:48,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 00:30:48,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 00:30:48,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 00:30:48,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 00:30:48,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 00:30:48,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 00:30:48,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 00:30:48,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 00:30:48,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 00:30:48,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 00:30:48,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 00:30:48,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 00:30:48,137 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 00:30:48,169 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 00:30:48,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 00:30:48,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 00:30:48,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 00:30:48,173 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 00:30:48,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 00:30:48,174 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 00:30:48,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 00:30:48,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 00:30:48,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 00:30:48,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 00:30:48,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 00:30:48,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 00:30:48,175 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 00:30:48,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 00:30:48,175 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 00:30:48,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 00:30:48,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 00:30:48,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 00:30:48,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 00:30:48,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 00:30:48,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 00:30:48,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 00:30:48,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 00:30:48,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 00:30:48,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 00:30:48,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:48,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 00:30:48,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 00:30:48,179 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 00:30:48,441 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 00:30:48,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 00:30:48,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 00:30:48,462 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 00:30:48,462 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 00:30:48,463 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-07-21 00:30:48,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12e5b6ddd/73126021064343a0938280f46c1750c9/FLAG754a328ef [2020-07-21 00:30:49,009 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 00:30:49,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-07-21 00:30:49,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12e5b6ddd/73126021064343a0938280f46c1750c9/FLAG754a328ef [2020-07-21 00:30:49,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12e5b6ddd/73126021064343a0938280f46c1750c9 [2020-07-21 00:30:49,378 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 00:30:49,381 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 00:30:49,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 00:30:49,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 00:30:49,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 00:30:49,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:30:49" (1/1) ... [2020-07-21 00:30:49,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe45b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:49, skipping insertion in model container [2020-07-21 00:30:49,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:30:49" (1/1) ... [2020-07-21 00:30:49,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 00:30:49,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 00:30:49,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:30:49,677 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 00:30:49,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:30:49,818 INFO L208 MainTranslator]: Completed translation [2020-07-21 00:30:49,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:49 WrapperNode [2020-07-21 00:30:49,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 00:30:49,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 00:30:49,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 00:30:49,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 00:30:49,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:49" (1/1) ... [2020-07-21 00:30:49,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:49" (1/1) ... [2020-07-21 00:30:49,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:49" (1/1) ... [2020-07-21 00:30:49,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:49" (1/1) ... [2020-07-21 00:30:49,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:49" (1/1) ... [2020-07-21 00:30:49,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:49" (1/1) ... [2020-07-21 00:30:49,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:49" (1/1) ... [2020-07-21 00:30:49,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 00:30:49,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 00:30:49,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 00:30:49,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 00:30:49,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:49" (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 00:30:49,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 00:30:49,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 00:30:49,944 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-07-21 00:30:49,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-21 00:30:49,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 00:30:49,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 00:30:49,945 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-07-21 00:30:49,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 00:30:49,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 00:30:49,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 00:30:49,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 00:30:49,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 00:30:49,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 00:30:49,947 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-21 00:30:49,947 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 00:30:49,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 00:30:49,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 00:30:50,364 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 00:30:50,364 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-21 00:30:50,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:30:50 BoogieIcfgContainer [2020-07-21 00:30:50,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 00:30:50,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 00:30:50,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 00:30:50,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 00:30:50,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:30:49" (1/3) ... [2020-07-21 00:30:50,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621ad699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:30:50, skipping insertion in model container [2020-07-21 00:30:50,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:49" (2/3) ... [2020-07-21 00:30:50,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621ad699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:30:50, skipping insertion in model container [2020-07-21 00:30:50,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:30:50" (3/3) ... [2020-07-21 00:30:50,377 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-07-21 00:30:50,386 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 00:30:50,394 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 00:30:50,408 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 00:30:50,429 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 00:30:50,430 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 00:30:50,430 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 00:30:50,430 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 00:30:50,430 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 00:30:50,430 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 00:30:50,430 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 00:30:50,430 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 00:30:50,446 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-07-21 00:30:50,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 00:30:50,453 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:30:50,454 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 00:30:50,454 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:30:50,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:30:50,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-07-21 00:30:50,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:30:50,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57072776] [2020-07-21 00:30:50,467 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 00:30:50,605 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 00:30:50,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:30:50,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 00:30:50,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:30:50,641 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 00:30:50,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:30:50,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57072776] [2020-07-21 00:30:50,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:30:50,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 00:30:50,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735037993] [2020-07-21 00:30:50,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 00:30:50,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:30:50,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 00:30:50,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 00:30:50,668 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2020-07-21 00:30:50,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:30:50,694 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-07-21 00:30:50,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 00:30:50,695 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-21 00:30:50,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:30:50,704 INFO L225 Difference]: With dead ends: 94 [2020-07-21 00:30:50,704 INFO L226 Difference]: Without dead ends: 47 [2020-07-21 00:30:50,707 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 00:30:50,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-21 00:30:50,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-07-21 00:30:50,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-21 00:30:50,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-07-21 00:30:50,741 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-07-21 00:30:50,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:30:50,742 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-07-21 00:30:50,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 00:30:50,742 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-07-21 00:30:50,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 00:30:50,744 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:30:50,744 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 00:30:50,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:50,959 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:30:50,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:30:50,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-07-21 00:30:50,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:30:50,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983155866] [2020-07-21 00:30:50,962 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 00:30:51,028 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:30:51,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 00:30:51,029 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 00:30:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 00:30:51,047 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 00:30:51,071 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 00:30:51,071 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 00:30:51,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:51,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:30:51 BoogieIcfgContainer [2020-07-21 00:30:51,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 00:30:51,324 INFO L168 Benchmark]: Toolchain (without parser) took 1943.50 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 104.0 MB in the beginning and 113.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 47.3 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:51,325 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 00:30:51,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 437.06 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 103.6 MB in the beginning and 180.6 MB in the end (delta: -77.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:51,327 INFO L168 Benchmark]: Boogie Preprocessor took 45.47 ms. Allocated memory is still 203.4 MB. Free memory was 180.6 MB in the beginning and 178.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:51,328 INFO L168 Benchmark]: RCFGBuilder took 503.81 ms. Allocated memory is still 203.4 MB. Free memory was 178.7 MB in the beginning and 154.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:51,329 INFO L168 Benchmark]: TraceAbstraction took 951.44 ms. Allocated memory is still 203.4 MB. Free memory was 154.8 MB in the beginning and 113.9 MB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:51,333 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 437.06 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 103.6 MB in the beginning and 180.6 MB in the end (delta: -77.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.47 ms. Allocated memory is still 203.4 MB. Free memory was 180.6 MB in the beginning and 178.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 503.81 ms. Allocated memory is still 203.4 MB. Free memory was 178.7 MB in the beginning and 154.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 951.44 ms. Allocated memory is still 203.4 MB. Free memory was 154.8 MB in the beginning and 113.9 MB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 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=2437, i1=2147483647, x=4] [L26] COND TRUE j0 < 20 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2437, i1=2147483647, j0=0, x=4] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2437, i1=2147483647, j0=0, x=4] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [\old(x)=4, \result=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2437, i1=2147483647, 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: 0.8s, 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, 0.0s 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...