/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 NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:55:35,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:55:35,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:55:35,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:55:35,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:55:35,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:55:35,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:55:35,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:55:35,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:55:35,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:55:35,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:55:35,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:55:35,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:55:35,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:55:35,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:55:35,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:55:35,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:55:35,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:55:35,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:55:35,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:55:35,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:55:35,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:55:35,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:55:35,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:55:35,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 12:55:35,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:55:35,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:55:35,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:55:35,511 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 12:55:35,547 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:55:35,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:55:35,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:55:35,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:55:35,552 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:55:35,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:55:35,553 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:55:35,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:55:35,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:55:35,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:55:35,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:55:35,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:55:35,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:55:35,554 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:55:35,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:55:35,555 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:55:35,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:55:35,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:55:35,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:55:35,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:55:35,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:55:35,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:55:35,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:55:35,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:55:35,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:55:35,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:55:35,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:35,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:55:35,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:55:35,561 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 -> NUM_FUNCTIONS 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 -> 2 [2020-07-21 12:55:35,899 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:55:35,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:55:35,924 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:55:35,926 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:55:35,926 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:55:35,928 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1051.c [2020-07-21 12:55:36,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06564ce5c/02ba68c58b36443b909aaf862788a9a6/FLAG5825334bb [2020-07-21 12:55:36,437 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:55:36,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1051.c [2020-07-21 12:55:36,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06564ce5c/02ba68c58b36443b909aaf862788a9a6/FLAG5825334bb [2020-07-21 12:55:36,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06564ce5c/02ba68c58b36443b909aaf862788a9a6 [2020-07-21 12:55:36,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:55:36,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:55:36,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:55:36,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:55:36,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:55:36,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:55:36" (1/1) ... [2020-07-21 12:55:36,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33863ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:36, skipping insertion in model container [2020-07-21 12:55:36,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:55:36" (1/1) ... [2020-07-21 12:55:36,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:55:36,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:55:37,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:55:37,043 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:55:37,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:55:37,094 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:55:37,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:37 WrapperNode [2020-07-21 12:55:37,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:55:37,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:55:37,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:55:37,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:55:37,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:37" (1/1) ... [2020-07-21 12:55:37,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:37" (1/1) ... [2020-07-21 12:55:37,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:37" (1/1) ... [2020-07-21 12:55:37,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:37" (1/1) ... [2020-07-21 12:55:37,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:37" (1/1) ... [2020-07-21 12:55:37,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:37" (1/1) ... [2020-07-21 12:55:37,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:37" (1/1) ... [2020-07-21 12:55:37,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:55:37,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:55:37,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:55:37,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:55:37,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:37" (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 12:55:37,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:55:37,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:55:37,287 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-07-21 12:55:37,288 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-07-21 12:55:37,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:55:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:55:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-21 12:55:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-07-21 12:55:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 12:55:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 12:55:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 12:55:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 12:55:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 12:55:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 12:55:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-07-21 12:55:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:55:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:55:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:55:37,679 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:55:37,680 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-21 12:55:37,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:55:37 BoogieIcfgContainer [2020-07-21 12:55:37,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:55:37,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:55:37,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:55:37,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:55:37,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:55:36" (1/3) ... [2020-07-21 12:55:37,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126ab53d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:55:37, skipping insertion in model container [2020-07-21 12:55:37,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:37" (2/3) ... [2020-07-21 12:55:37,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126ab53d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:55:37, skipping insertion in model container [2020-07-21 12:55:37,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:55:37" (3/3) ... [2020-07-21 12:55:37,691 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2020-07-21 12:55:37,701 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:55:37,708 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:55:37,720 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:55:37,744 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:55:37,745 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:55:37,745 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:55:37,745 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:55:37,745 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:55:37,745 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:55:37,746 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:55:37,746 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:55:37,765 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-07-21 12:55:37,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 12:55:37,772 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:55:37,773 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] [2020-07-21 12:55:37,773 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:55:37,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:55:37,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1361541252, now seen corresponding path program 1 times [2020-07-21 12:55:37,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:55:37,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778768493] [2020-07-21 12:55:37,790 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 12:55:37,922 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:55:37,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:55:37,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 12:55:37,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:55:37,956 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 12:55:37,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:55:37,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778768493] [2020-07-21 12:55:37,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:55:37,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 12:55:37,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059709548] [2020-07-21 12:55:37,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 12:55:37,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:55:37,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 12:55:37,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:55:37,983 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-07-21 12:55:38,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:55:38,008 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2020-07-21 12:55:38,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 12:55:38,009 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-07-21 12:55:38,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:55:38,019 INFO L225 Difference]: With dead ends: 70 [2020-07-21 12:55:38,019 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 12:55:38,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 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 12:55:38,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 12:55:38,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-21 12:55:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-21 12:55:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-07-21 12:55:38,061 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 22 [2020-07-21 12:55:38,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:55:38,062 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-07-21 12:55:38,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 12:55:38,062 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-07-21 12:55:38,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 12:55:38,063 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:55:38,064 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] [2020-07-21 12:55:38,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:38,265 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:55:38,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:55:38,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1541897397, now seen corresponding path program 1 times [2020-07-21 12:55:38,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:55:38,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358481376] [2020-07-21 12:55:38,268 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 12:55:38,343 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:55:38,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 12:55:38,344 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:55:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 12:55:38,366 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:55:38,391 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 12:55:38,392 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 12:55:38,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:38,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:55:38 BoogieIcfgContainer [2020-07-21 12:55:38,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 12:55:38,641 INFO L168 Benchmark]: Toolchain (without parser) took 1812.70 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 105.1 MB in the beginning and 122.0 MB in the end (delta: -17.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:38,643 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 12:55:38,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.99 ms. Allocated memory is still 140.0 MB. Free memory was 104.9 MB in the beginning and 93.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:38,645 INFO L168 Benchmark]: Boogie Preprocessor took 126.64 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.4 MB in the beginning and 181.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:38,646 INFO L168 Benchmark]: RCFGBuilder took 458.17 ms. Allocated memory is still 203.9 MB. Free memory was 181.5 MB in the beginning and 162.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:38,647 INFO L168 Benchmark]: TraceAbstraction took 953.66 ms. Allocated memory is still 203.9 MB. Free memory was 162.2 MB in the beginning and 122.0 MB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:38,651 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 265.99 ms. Allocated memory is still 140.0 MB. Free memory was 104.9 MB in the beginning and 93.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.64 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.4 MB in the beginning and 181.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 458.17 ms. Allocated memory is still 203.9 MB. Free memory was 181.5 MB in the beginning and 162.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 953.66 ms. Allocated memory is still 203.9 MB. Free memory was 162.2 MB in the beginning and 122.0 MB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 71]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 58, overapproximation of someBinaryArithmeticFLOAToperation at line 45, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; VAL [\old(huge_floor)=0, huge_floor=1000000000000000000000000000000] [L66] float x = 0.0f / 0.0f; VAL [huge_floor=1000000000000000000000000000000] [L67] CALL, EXPR floor_float(x) VAL [\old(x)=4, huge_floor=1000000000000000000000000000000] [L15] __int32_t i0, j0; [L16] __uint32_t i, ix; VAL [\old(x)=4, huge_floor=1000000000000000000000000000000, x=4] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (i0) = gf_u.word [L22] ix = (i0 & 0x7fffffff) [L23] j0 = (ix >> 23) - 0x7f VAL [\old(x)=4, huge_floor=1000000000000000000000000000000, i=-108086388917796864, i0=0, j0=128, x=4] [L24] COND FALSE !(j0 < 23) VAL [\old(x)=4, huge_floor=1000000000000000000000000000000, i=-108086388917796864, i0=0, j0=128, x=4] [L44] COND TRUE !((ix) < 0x7f800000L) [L45] return x + x; VAL [\old(x)=4, huge_floor=1000000000000000000000000000000, i=-108086388917796864, i0=0, j0=128, x=4] [L67] RET, EXPR floor_float(x) VAL [floor_float(x)=5, huge_floor=1000000000000000000000000000000, x=4] [L67] float res = floor_float(x); [L70] CALL, EXPR isnan_float(res) VAL [\old(x)=5, huge_floor=1000000000000000000000000000000] [L58] return x != x; VAL [\old(x)=5, \result=0, huge_floor=1000000000000000000000000000000, x=5] [L70] RET, EXPR isnan_float(res) VAL [huge_floor=1000000000000000000000000000000, isnan_float(res)=0, res=5, x=4] [L70] COND TRUE !isnan_float(res) [L71] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000, res=5, x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 75 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...