/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_1251b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 00:30:55,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 00:30:55,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 00:30:55,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-21 00:30:55,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 00:30:55,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 00:30:55,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 00:30:55,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 00:30:55,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 00:30:55,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 00:30:55,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 00:30:55,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 00:30:55,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 00:30:55,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 00:30:55,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 00:30:55,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 00:30:55,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 00:30:55,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 00:30:55,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 00:30:55,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 00:30:55,649 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 00:30:55,684 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 00:30:55,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 00:30:55,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 00:30:55,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 00:30:55,688 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 00:30:55,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 00:30:55,689 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 00:30:55,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 00:30:55,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 00:30:55,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 00:30:55,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 00:30:55,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 00:30:55,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 00:30:55,690 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 00:30:55,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 00:30:55,690 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 00:30:55,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 00:30:55,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 00:30:55,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 00:30:55,692 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 00:30:55,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 00:30:55,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 00:30:55,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 00:30:55,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 00:30:55,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 00:30:55,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 00:30:55,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:55,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 00:30:55,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 00:30:55,694 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 00:30:55,999 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 00:30:56,014 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 00:30:56,019 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 00:30:56,020 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 00:30:56,022 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 00:30:56,023 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-07-21 00:30:56,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3197002f/4af5f1bf78c04298877c8d49e366786e/FLAG013eae0eb [2020-07-21 00:30:56,529 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 00:30:56,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-07-21 00:30:56,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3197002f/4af5f1bf78c04298877c8d49e366786e/FLAG013eae0eb [2020-07-21 00:30:56,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3197002f/4af5f1bf78c04298877c8d49e366786e [2020-07-21 00:30:56,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 00:30:56,949 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 00:30:56,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 00:30:56,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 00:30:56,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 00:30:56,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:30:56" (1/1) ... [2020-07-21 00:30:56,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@141bd110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:56, skipping insertion in model container [2020-07-21 00:30:56,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:30:56" (1/1) ... [2020-07-21 00:30:56,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 00:30:56,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 00:30:57,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:30:57,158 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 00:30:57,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:30:57,288 INFO L208 MainTranslator]: Completed translation [2020-07-21 00:30:57,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:57 WrapperNode [2020-07-21 00:30:57,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 00:30:57,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 00:30:57,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 00:30:57,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 00:30:57,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:57" (1/1) ... [2020-07-21 00:30:57,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:57" (1/1) ... [2020-07-21 00:30:57,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:57" (1/1) ... [2020-07-21 00:30:57,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:57" (1/1) ... [2020-07-21 00:30:57,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:57" (1/1) ... [2020-07-21 00:30:57,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:57" (1/1) ... [2020-07-21 00:30:57,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:57" (1/1) ... [2020-07-21 00:30:57,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 00:30:57,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 00:30:57,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 00:30:57,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 00:30:57,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:57" (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 00:30:57,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 00:30:57,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 00:30:57,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 00:30:57,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-07-21 00:30:57,393 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-07-21 00:30:57,394 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 00:30:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 00:30:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 00:30:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 00:30:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-07-21 00:30:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 00:30:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 00:30:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 00:30:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 00:30:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-07-21 00:30:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 00:30:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 00:30:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 00:30:57,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 00:30:57,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 00:30:57,775 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 00:30:57,775 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-21 00:30:57,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:30:57 BoogieIcfgContainer [2020-07-21 00:30:57,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 00:30:57,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 00:30:57,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 00:30:57,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 00:30:57,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:30:56" (1/3) ... [2020-07-21 00:30:57,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65314734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:30:57, skipping insertion in model container [2020-07-21 00:30:57,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:57" (2/3) ... [2020-07-21 00:30:57,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65314734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:30:57, skipping insertion in model container [2020-07-21 00:30:57,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:30:57" (3/3) ... [2020-07-21 00:30:57,791 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2020-07-21 00:30:57,802 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 00:30:57,809 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 00:30:57,824 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 00:30:57,846 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 00:30:57,847 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 00:30:57,847 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 00:30:57,847 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 00:30:57,847 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 00:30:57,847 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 00:30:57,847 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 00:30:57,847 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 00:30:57,867 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-21 00:30:57,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 00:30:57,875 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:30:57,876 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] [2020-07-21 00:30:57,876 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:30:57,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:30:57,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1800374877, now seen corresponding path program 1 times [2020-07-21 00:30:57,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:30:57,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063335182] [2020-07-21 00:30:57,889 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 00:30:57,994 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 00:30:57,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:30:57,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 00:30:58,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:30:58,034 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 00:30:58,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:30:58,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063335182] [2020-07-21 00:30:58,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:30:58,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 00:30:58,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306322071] [2020-07-21 00:30:58,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 00:30:58,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:30:58,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 00:30:58,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 00:30:58,057 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-07-21 00:30:58,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:30:58,087 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-07-21 00:30:58,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 00:30:58,089 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2020-07-21 00:30:58,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:30:58,098 INFO L225 Difference]: With dead ends: 69 [2020-07-21 00:30:58,098 INFO L226 Difference]: Without dead ends: 37 [2020-07-21 00:30:58,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 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 00:30:58,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-21 00:30:58,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-21 00:30:58,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-21 00:30:58,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2020-07-21 00:30:58,148 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 27 [2020-07-21 00:30:58,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:30:58,149 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2020-07-21 00:30:58,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 00:30:58,149 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2020-07-21 00:30:58,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 00:30:58,152 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:30:58,152 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, 1] [2020-07-21 00:30:58,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:58,368 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:30:58,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:30:58,369 INFO L82 PathProgramCache]: Analyzing trace with hash 283227385, now seen corresponding path program 1 times [2020-07-21 00:30:58,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:30:58,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843266397] [2020-07-21 00:30:58,370 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 00:30:58,490 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:30:58,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:30:58,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 00:30:58,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:30:58,555 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 00:30:58,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:30:58,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843266397] [2020-07-21 00:30:58,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:30:58,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 00:30:58,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643949717] [2020-07-21 00:30:58,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 00:30:58,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:30:58,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 00:30:58,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 00:30:58,563 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 4 states. [2020-07-21 00:30:58,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:30:58,591 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-07-21 00:30:58,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 00:30:58,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-07-21 00:30:58,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:30:58,595 INFO L225 Difference]: With dead ends: 47 [2020-07-21 00:30:58,596 INFO L226 Difference]: Without dead ends: 41 [2020-07-21 00:30:58,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 00:30:58,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-21 00:30:58,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-21 00:30:58,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 00:30:58,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-21 00:30:58,607 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2020-07-21 00:30:58,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:30:58,608 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-21 00:30:58,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 00:30:58,608 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-21 00:30:58,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 00:30:58,610 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:30:58,610 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, 1, 1, 1, 1] [2020-07-21 00:30:58,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:58,824 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:30:58,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:30:58,825 INFO L82 PathProgramCache]: Analyzing trace with hash 827998108, now seen corresponding path program 1 times [2020-07-21 00:30:58,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:30:58,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832799971] [2020-07-21 00:30:58,827 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:58,912 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:30:58,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:30:58,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 00:30:58,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:30:58,962 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 00:30:58,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:30:58,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832799971] [2020-07-21 00:30:58,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:30:58,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 00:30:58,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599584107] [2020-07-21 00:30:58,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 00:30:58,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:30:58,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 00:30:58,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 00:30:58,967 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 4 states. [2020-07-21 00:30:59,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:30:59,001 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-07-21 00:30:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 00:30:59,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-07-21 00:30:59,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:30:59,003 INFO L225 Difference]: With dead ends: 51 [2020-07-21 00:30:59,003 INFO L226 Difference]: Without dead ends: 45 [2020-07-21 00:30:59,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 00:30:59,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-21 00:30:59,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-07-21 00:30:59,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 00:30:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-21 00:30:59,014 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2020-07-21 00:30:59,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:30:59,014 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-21 00:30:59,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 00:30:59,014 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-21 00:30:59,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 00:30:59,016 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:30:59,016 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, 1, 1, 1, 1] [2020-07-21 00:30:59,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:59,230 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:30:59,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:30:59,231 INFO L82 PathProgramCache]: Analyzing trace with hash 631484603, now seen corresponding path program 1 times [2020-07-21 00:30:59,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:30:59,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634142439] [2020-07-21 00:30:59,233 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:59,305 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:30:59,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 00:30:59,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 00:30:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 00:30:59,324 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 00:30:59,348 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 00:30:59,348 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 00:30:59,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:59,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:30:59 BoogieIcfgContainer [2020-07-21 00:30:59,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 00:30:59,603 INFO L168 Benchmark]: Toolchain (without parser) took 2653.38 ms. Allocated memory was 146.3 MB in the beginning and 233.8 MB in the end (delta: 87.6 MB). Free memory was 102.8 MB in the beginning and 190.3 MB in the end (delta: -87.5 MB). Peak memory consumption was 17.5 kB. Max. memory is 7.1 GB. [2020-07-21 00:30:59,604 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 146.3 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 00:30:59,605 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.14 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.4 MB in the beginning and 182.3 MB in the end (delta: -80.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:59,606 INFO L168 Benchmark]: Boogie Preprocessor took 43.06 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 180.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:59,607 INFO L168 Benchmark]: RCFGBuilder took 449.59 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 160.4 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:59,608 INFO L168 Benchmark]: TraceAbstraction took 1816.28 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 160.4 MB in the beginning and 190.3 MB in the end (delta: -29.9 MB). Peak memory consumption was 460.6 kB. Max. memory is 7.1 GB. [2020-07-21 00:30:59,612 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 146.3 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 339.14 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.4 MB in the beginning and 182.3 MB in the end (delta: -80.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.06 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 180.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 449.59 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 160.4 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1816.28 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 160.4 MB in the beginning and 190.3 MB in the end (delta: -29.9 MB). Peak memory consumption was 460.6 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 78]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 77, overapproximation of someBinaryArithmeticDOUBLEoperation at line 65. Possible FailurePath: [L64] double x = __VERIFIER_nondet_double(); [L65] double y = 0.0 / 0.0; VAL [x=3] [L72] CALL, EXPR isnan_double(x) VAL [\old(x)=3] [L16] return x != x; VAL [\old(x)=3, \result=0, x=3] [L72] RET, EXPR isnan_double(x) VAL [isnan_double(x)=0, x=3] [L72] COND TRUE !isnan_double(x) [L74] CALL, EXPR fmax_double(x, y) VAL [\old(x)=3, \old(y)=4] [L55] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=3] [L27] __uint32_t msw, lsw; VAL [\old(x)=3, x=3] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=3, lsw=-1, msw=-2147483649, x=3] [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=3, lsw=-1, msw=-2147483649, x=3] [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=3, lsw=-1, msw=-2147483649, x=3] [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; VAL [\old(x)=3, \result=0, lsw=-1, msw=-2147483649, x=3] [L55] RET, EXPR __fpclassify_double(x) VAL [\old(x)=3, \old(y)=4, __fpclassify_double(x)=0, x=3, y=4] [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; VAL [\old(x)=3, \old(y)=4, \result=4, x=3, y=4] [L74] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4, x=3, y=4] [L74] double res = fmax_double(x, y); [L77] COND TRUE res != x VAL [res=4, x=3, y=4] [L78] __VERIFIER_error() VAL [res=4, x=3, y=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 0 SDslu, 156 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 117 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 2761 SizeOfPredicates, 0 NumberOfNonLiveVariables, 308 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...