/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 DAGSIZE --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_1052a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:07:23,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 21:07:23,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 21:07:23,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 21:07:23,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:07:23,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:07:23,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:07:23,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:07:23,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:07:23,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:07:23,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:07:23,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:07:23,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:07:23,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:07:23,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:07:23,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:07:23,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:07:23,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:07:23,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:07:23,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:07:23,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:07:23,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:07:23,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:07:23,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:07:23,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 21:07:23,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:07:23,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:07:23,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:07:23,926 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 21:07:23,948 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:07:23,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:07:23,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:07:23,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:07:23,954 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:07:23,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:07:23,954 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:07:23,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:07:23,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:07:23,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:07:23,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:07:23,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:07:23,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:07:23,957 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:07:23,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:07:23,957 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:07:23,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:07:23,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:07:23,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:07:23,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:07:23,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:07:23,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:07:23,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:07:23,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:07:23,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:07:23,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:07:23,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:23,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:07:23,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:07:23,962 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 -> DAGSIZE 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 21:07:24,294 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:07:24,311 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:07:24,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:07:24,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:07:24,316 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:07:24,317 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c [2020-07-20 21:07:24,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d20d0b13f/a56f33dfa75a4146b2b4a7c1f106884d/FLAG3820bc123 [2020-07-20 21:07:24,829 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:07:24,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c [2020-07-20 21:07:24,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d20d0b13f/a56f33dfa75a4146b2b4a7c1f106884d/FLAG3820bc123 [2020-07-20 21:07:25,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d20d0b13f/a56f33dfa75a4146b2b4a7c1f106884d [2020-07-20 21:07:25,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:07:25,223 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:07:25,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:07:25,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:07:25,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:07:25,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:07:25" (1/1) ... [2020-07-20 21:07:25,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc12e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25, skipping insertion in model container [2020-07-20 21:07:25,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:07:25" (1/1) ... [2020-07-20 21:07:25,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:07:25,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:07:25,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:07:25,476 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:07:25,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:07:25,629 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:07:25,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25 WrapperNode [2020-07-20 21:07:25,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:07:25,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:07:25,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:07:25,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:07:25,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (1/1) ... [2020-07-20 21:07:25,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (1/1) ... [2020-07-20 21:07:25,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (1/1) ... [2020-07-20 21:07:25,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (1/1) ... [2020-07-20 21:07:25,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (1/1) ... [2020-07-20 21:07:25,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (1/1) ... [2020-07-20 21:07:25,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (1/1) ... [2020-07-20 21:07:25,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:07:25,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:07:25,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:07:25,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:07:25,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (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 21:07:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:07:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:07:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-07-20 21:07:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-07-20 21:07:25,742 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:07:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:07:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-07-20 21:07:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 21:07:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 21:07:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 21:07:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 21:07:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 21:07:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 21:07:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-07-20 21:07:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:07:25,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:07:25,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:07:26,142 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:07:26,142 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-20 21:07:26,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:07:26 BoogieIcfgContainer [2020-07-20 21:07:26,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:07:26,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:07:26,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:07:26,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:07:26,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:07:25" (1/3) ... [2020-07-20 21:07:26,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d87302e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:07:26, skipping insertion in model container [2020-07-20 21:07:26,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (2/3) ... [2020-07-20 21:07:26,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d87302e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:07:26, skipping insertion in model container [2020-07-20 21:07:26,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:07:26" (3/3) ... [2020-07-20 21:07:26,156 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052a.c [2020-07-20 21:07:26,170 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:07:26,178 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:07:26,192 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:07:26,219 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:07:26,220 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:07:26,220 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:07:26,220 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:07:26,220 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:07:26,220 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:07:26,221 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:07:26,221 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:07:26,241 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-07-20 21:07:26,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 21:07:26,251 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:07:26,252 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, 1, 1] [2020-07-20 21:07:26,252 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:07:26,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:07:26,257 INFO L82 PathProgramCache]: Analyzing trace with hash -2000118749, now seen corresponding path program 1 times [2020-07-20 21:07:26,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:07:26,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360604797] [2020-07-20 21:07:26,267 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 21:07:26,383 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:07:26,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:07:26,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 21:07:26,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:07:26,423 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 21:07:26,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:07:26,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360604797] [2020-07-20 21:07:26,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:07:26,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 21:07:26,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908090082] [2020-07-20 21:07:26,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 21:07:26,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:07:26,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 21:07:26,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 21:07:26,453 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-07-20 21:07:26,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:07:26,484 INFO L93 Difference]: Finished difference Result 92 states and 135 transitions. [2020-07-20 21:07:26,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 21:07:26,485 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-20 21:07:26,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:07:26,497 INFO L225 Difference]: With dead ends: 92 [2020-07-20 21:07:26,497 INFO L226 Difference]: Without dead ends: 46 [2020-07-20 21:07:26,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 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 21:07:26,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-20 21:07:26,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-07-20 21:07:26,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-20 21:07:26,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2020-07-20 21:07:26,546 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 25 [2020-07-20 21:07:26,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:07:26,547 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2020-07-20 21:07:26,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 21:07:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2020-07-20 21:07:26,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 21:07:26,549 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:07:26,550 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, 1, 1, 1, 1] [2020-07-20 21:07:26,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:26,764 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:07:26,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:07:26,765 INFO L82 PathProgramCache]: Analyzing trace with hash 784957124, now seen corresponding path program 1 times [2020-07-20 21:07:26,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:07:26,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363205834] [2020-07-20 21:07:26,767 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 21:07:26,909 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:07:26,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 21:07:26,910 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:07:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 21:07:26,945 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:07:26,974 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 21:07:26,975 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 21:07:27,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:27,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:07:27 BoogieIcfgContainer [2020-07-20 21:07:27,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:07:27,226 INFO L168 Benchmark]: Toolchain (without parser) took 2003.84 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 102.6 MB in the beginning and 105.4 MB in the end (delta: -2.8 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:27,228 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 21:07:27,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.70 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 102.2 MB in the beginning and 180.2 MB in the end (delta: -78.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:27,230 INFO L168 Benchmark]: Boogie Preprocessor took 48.80 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 177.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:27,231 INFO L168 Benchmark]: RCFGBuilder took 468.16 ms. Allocated memory is still 201.9 MB. Free memory was 177.7 MB in the beginning and 153.2 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:27,231 INFO L168 Benchmark]: TraceAbstraction took 1073.56 ms. Allocated memory is still 201.9 MB. Free memory was 152.5 MB in the beginning and 105.4 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:27,236 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 406.70 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 102.2 MB in the beginning and 180.2 MB in the end (delta: -78.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.80 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 177.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 468.16 ms. Allocated memory is still 201.9 MB. Free memory was 177.7 MB in the beginning and 153.2 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1073.56 ms. Allocated memory is still 201.9 MB. Free memory was 152.5 MB in the beginning and 105.4 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 106]: 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 89, overapproximation of someBinaryArithmeticDOUBLEoperation at line 101, overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [\old(huge_floor)=0, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] double x = 1.0 / 0.0; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L102] CALL, EXPR floor_double(x) VAL [\old(x)=1, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [\old(x)=1, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] [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)=1, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=21655, i1=2147483647, x=1] [L26] COND TRUE j0 < 20 VAL [\old(x)=1, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=21655, i1=2147483647, j0=0, x=1] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [\old(x)=1, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=21655, i1=2147483647, j0=0, x=1] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [\old(x)=1, \result=1, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=21655, i1=2147483647, j0=0, x=1] [L102] RET, EXPR floor_double(x) VAL [floor_double(x)=1, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] [L102] double res = floor_double(x); [L105] CALL, EXPR isinf_double(res) VAL [\old(x)=1, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L81] __int32_t hx, lx; VAL [\old(x)=1, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] [L83] ieee_double_shape_type ew_u; [L84] ew_u.value = (x) [L85] EXPR ew_u.parts.msw [L85] (hx) = ew_u.parts.msw [L86] EXPR ew_u.parts.lsw [L86] (lx) = ew_u.parts.lsw [L88] hx &= 0x7fffffff [L89] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L90] hx = 0x7ff00000 - hx [L91] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=1, \result=0, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=2146435071, lx=2240, x=1] [L105] RET, EXPR isinf_double(res) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, isinf_double(res)=0, res=1, x=1] [L105] COND TRUE !isinf_double(res) [L106] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=1, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 50 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: 64 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred 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, 52 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 83 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...