/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/float_req_bl_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:02:26,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:02:26,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:02:26,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:02:26,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:02:26,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:02:26,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:02:26,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:02:26,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:02:26,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:02:26,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:02:26,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:02:26,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:02:26,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:02:26,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:02:26,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:02:26,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:02:26,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:02:26,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:02:26,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:02:26,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:02:26,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:02:26,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:02:26,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:02:26,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:02:26,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:02:26,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:02:26,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:02:26,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 22:02:26,127 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:02:26,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:02:26,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:02:26,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:02:26,129 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:02:26,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:02:26,131 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:02:26,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:02:26,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:02:26,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:02:26,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:02:26,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:02:26,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:02:26,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:02:26,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:02:26,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:02:26,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:02:26,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:02:26,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:02:26,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:02:26,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:02:26,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:02:26,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:02:26,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:02:26,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:02:26,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:02:26,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:26,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:02:26,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:02:26,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 22:02:26,429 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:02:26,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:02:26,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:02:26,447 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:02:26,448 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:02:26,449 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2020-07-21 22:02:26,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6babeb58e/ebbfffe08f2c4f53b45457ae5175ac82/FLAGa60b94f5c [2020-07-21 22:02:26,977 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:02:26,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2020-07-21 22:02:26,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6babeb58e/ebbfffe08f2c4f53b45457ae5175ac82/FLAGa60b94f5c [2020-07-21 22:02:27,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6babeb58e/ebbfffe08f2c4f53b45457ae5175ac82 [2020-07-21 22:02:27,382 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:02:27,385 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:02:27,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:02:27,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:02:27,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:02:27,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:27" (1/1) ... [2020-07-21 22:02:27,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f05841f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:27, skipping insertion in model container [2020-07-21 22:02:27,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:27" (1/1) ... [2020-07-21 22:02:27,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:02:27,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:02:27,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:02:27,630 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:02:27,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:02:27,764 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:02:27,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:27 WrapperNode [2020-07-21 22:02:27,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:02:27,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:02:27,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:02:27,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:02:27,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:27" (1/1) ... [2020-07-21 22:02:27,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:27" (1/1) ... [2020-07-21 22:02:27,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:27" (1/1) ... [2020-07-21 22:02:27,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:27" (1/1) ... [2020-07-21 22:02:27,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:27" (1/1) ... [2020-07-21 22:02:27,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:27" (1/1) ... [2020-07-21 22:02:27,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:27" (1/1) ... [2020-07-21 22:02:27,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:02:27,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:02:27,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:02:27,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:02:27,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:02:27,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:02:27,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:02:27,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-07-21 22:02:27,879 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-07-21 22:02:27,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-07-21 22:02:27,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:02:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:02:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-07-21 22:02:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 22:02:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 22:02:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 22:02:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 22:02:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-07-21 22:02:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-07-21 22:02:27,881 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:02:27,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:02:27,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:02:27,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 22:02:27,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 22:02:28,238 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:02:28,238 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-21 22:02:28,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:28 BoogieIcfgContainer [2020-07-21 22:02:28,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:02:28,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:02:28,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:02:28,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:02:28,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:02:27" (1/3) ... [2020-07-21 22:02:28,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af2e119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:28, skipping insertion in model container [2020-07-21 22:02:28,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:27" (2/3) ... [2020-07-21 22:02:28,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af2e119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:28, skipping insertion in model container [2020-07-21 22:02:28,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:28" (3/3) ... [2020-07-21 22:02:28,258 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2020-07-21 22:02:28,268 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:02:28,276 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:02:28,290 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:02:28,314 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:02:28,314 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:02:28,314 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:02:28,314 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:02:28,314 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:02:28,314 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:02:28,315 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:02:28,315 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:02:28,331 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-21 22:02:28,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 22:02:28,336 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:28,337 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] [2020-07-21 22:02:28,337 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:28,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:28,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1130060244, now seen corresponding path program 1 times [2020-07-21 22:02:28,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:28,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353663800] [2020-07-21 22:02:28,352 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:28,466 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:02:28,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:28,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 22:02:28,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:28,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:02:28,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:02:28,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353663800] [2020-07-21 22:02:28,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:02:28,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 22:02:28,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079648483] [2020-07-21 22:02:28,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 22:02:28,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:28,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 22:02:28,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:02:28,527 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-07-21 22:02:28,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:28,550 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2020-07-21 22:02:28,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 22:02:28,551 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2020-07-21 22:02:28,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:28,560 INFO L225 Difference]: With dead ends: 71 [2020-07-21 22:02:28,560 INFO L226 Difference]: Without dead ends: 36 [2020-07-21 22:02:28,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:02:28,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-21 22:02:28,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-21 22:02:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-21 22:02:28,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-07-21 22:02:28,608 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2020-07-21 22:02:28,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:28,609 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-07-21 22:02:28,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 22:02:28,609 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-07-21 22:02:28,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 22:02:28,611 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:28,611 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 22:02:28,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:28,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:28,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:28,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1283143896, now seen corresponding path program 1 times [2020-07-21 22:02:28,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:28,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511672933] [2020-07-21 22:02:28,830 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:28,923 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:02:28,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:28,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 22:02:28,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:28,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:02:28,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:02:28,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511672933] [2020-07-21 22:02:28,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:02:28,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 22:02:28,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903226928] [2020-07-21 22:02:28,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 22:02:28,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:28,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 22:02:28,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 22:02:28,990 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2020-07-21 22:02:29,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:29,020 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-07-21 22:02:29,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 22:02:29,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-07-21 22:02:29,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:29,024 INFO L225 Difference]: With dead ends: 51 [2020-07-21 22:02:29,024 INFO L226 Difference]: Without dead ends: 40 [2020-07-21 22:02:29,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 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 22:02:29,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-21 22:02:29,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-21 22:02:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-21 22:02:29,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-21 22:02:29,036 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2020-07-21 22:02:29,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:29,036 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-21 22:02:29,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 22:02:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-21 22:02:29,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 22:02:29,038 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:29,038 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] [2020-07-21 22:02:29,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:29,253 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:29,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:29,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1220464557, now seen corresponding path program 1 times [2020-07-21 22:02:29,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:29,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467053203] [2020-07-21 22:02:29,256 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 22:02:29,343 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:02:29,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:29,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 22:02:29,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:29,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:02:29,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:02:29,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467053203] [2020-07-21 22:02:29,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:02:29,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 22:02:29,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120856997] [2020-07-21 22:02:29,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 22:02:29,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:29,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 22:02:29,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 22:02:29,390 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2020-07-21 22:02:29,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:29,430 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-07-21 22:02:29,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 22:02:29,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-21 22:02:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:29,435 INFO L225 Difference]: With dead ends: 55 [2020-07-21 22:02:29,436 INFO L226 Difference]: Without dead ends: 44 [2020-07-21 22:02:29,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 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 22:02:29,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-21 22:02:29,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-07-21 22:02:29,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-21 22:02:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-21 22:02:29,453 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2020-07-21 22:02:29,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:29,455 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-21 22:02:29,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 22:02:29,456 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-21 22:02:29,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 22:02:29,459 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:29,459 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] [2020-07-21 22:02:29,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:29,673 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:29,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:29,674 INFO L82 PathProgramCache]: Analyzing trace with hash 287087252, now seen corresponding path program 1 times [2020-07-21 22:02:29,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:29,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961576562] [2020-07-21 22:02:29,675 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 22:02:29,769 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:02:29,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 22:02:29,770 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:02:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 22:02:29,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:02:29,809 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 22:02:29,809 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 22:02:30,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:30,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:02:30 BoogieIcfgContainer [2020-07-21 22:02:30,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:02:30,062 INFO L168 Benchmark]: Toolchain (without parser) took 2676.90 ms. Allocated memory was 137.9 MB in the beginning and 234.4 MB in the end (delta: 96.5 MB). Free memory was 102.3 MB in the beginning and 198.6 MB in the end (delta: -96.3 MB). Peak memory consumption was 123.1 kB. Max. memory is 7.1 GB. [2020-07-21 22:02:30,064 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 22:02:30,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.57 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 101.8 MB in the beginning and 180.9 MB in the end (delta: -79.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:30,070 INFO L168 Benchmark]: Boogie Preprocessor took 55.38 ms. Allocated memory is still 201.9 MB. Free memory was 180.9 MB in the beginning and 178.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:30,071 INFO L168 Benchmark]: RCFGBuilder took 425.08 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 160.3 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:30,073 INFO L168 Benchmark]: TraceAbstraction took 1811.52 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 159.6 MB in the beginning and 198.6 MB in the end (delta: -39.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 22:02:30,078 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 378.57 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 101.8 MB in the beginning and 180.9 MB in the end (delta: -79.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.38 ms. Allocated memory is still 201.9 MB. Free memory was 180.9 MB in the beginning and 178.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 425.08 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 160.3 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1811.52 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 159.6 MB in the beginning and 198.6 MB in the end (delta: -39.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 60. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L62] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0, \old(y)=1] [L43] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L20] __uint32_t w; VAL [\old(x)=0, x=0] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=2139095041, x=0] [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=2139095041, x=0] [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=2139095041, x=0] [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; VAL [\old(x)=0, \result=0, w=2139095041, x=0] [L43] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=1, __fpclassify_float(x)=0, x=0, y=1] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; VAL [\old(x)=0, \old(y)=1, \result=1, x=0, y=1] [L62] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=1, x=0, y=1] [L62] float res = fmax_float(x, y); [L64] CALL, EXPR isnan_float(res) VAL [\old(x)=1] [L54] return x != x; VAL [\old(x)=1, \result=0, x=1] [L64] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=1, x=0, y=1] [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() VAL [res=1, x=0, y=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 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: 129 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 113 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 256 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...