/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1071.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 19:14:55,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 19:14:55,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 19:14:55,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 19:14:55,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 19:14:55,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 19:14:55,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 19:14:55,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 19:14:55,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 19:14:55,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 19:14:55,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 19:14:55,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 19:14:55,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 19:14:55,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 19:14:55,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 19:14:55,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 19:14:55,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 19:14:55,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 19:14:55,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 19:14:55,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 19:14:55,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 19:14:55,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 19:14:55,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 19:14:55,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 19:14:55,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 19:14:55,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 19:14:55,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 19:14:55,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 19:14:55,374 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 19:14:55,408 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 19:14:55,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 19:14:55,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 19:14:55,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 19:14:55,412 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 19:14:55,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 19:14:55,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 19:14:55,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 19:14:55,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 19:14:55,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 19:14:55,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 19:14:55,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 19:14:55,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 19:14:55,418 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 19:14:55,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 19:14:55,418 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 19:14:55,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 19:14:55,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 19:14:55,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 19:14:55,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 19:14:55,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 19:14:55,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 19:14:55,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 19:14:55,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 19:14:55,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 19:14:55,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 19:14:55,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:14:55,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 19:14:55,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 19:14:55,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 19:14:55,713 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 19:14:55,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 19:14:55,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 19:14:55,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 19:14:55,731 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 19:14:55,732 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2020-07-21 19:14:55,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25ecd9acd/38f7cf944e644977bfe5982ac14dd7f0/FLAGae4a6062e [2020-07-21 19:14:56,214 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 19:14:56,215 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2020-07-21 19:14:56,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25ecd9acd/38f7cf944e644977bfe5982ac14dd7f0/FLAGae4a6062e [2020-07-21 19:14:56,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25ecd9acd/38f7cf944e644977bfe5982ac14dd7f0 [2020-07-21 19:14:56,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 19:14:56,652 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 19:14:56,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 19:14:56,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 19:14:56,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 19:14:56,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:14:56" (1/1) ... [2020-07-21 19:14:56,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e20bf57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:56, skipping insertion in model container [2020-07-21 19:14:56,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:14:56" (1/1) ... [2020-07-21 19:14:56,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 19:14:56,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 19:14:56,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:14:56,882 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 19:14:56,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:14:56,937 INFO L208 MainTranslator]: Completed translation [2020-07-21 19:14:56,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:56 WrapperNode [2020-07-21 19:14:56,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 19:14:56,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 19:14:56,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 19:14:56,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 19:14:57,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:56" (1/1) ... [2020-07-21 19:14:57,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:56" (1/1) ... [2020-07-21 19:14:57,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:56" (1/1) ... [2020-07-21 19:14:57,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:56" (1/1) ... [2020-07-21 19:14:57,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:56" (1/1) ... [2020-07-21 19:14:57,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:56" (1/1) ... [2020-07-21 19:14:57,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:56" (1/1) ... [2020-07-21 19:14:57,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 19:14:57,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 19:14:57,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 19:14:57,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 19:14:57,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:56" (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 19:14:57,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 19:14:57,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 19:14:57,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 19:14:57,131 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-07-21 19:14:57,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 19:14:57,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 19:14:57,132 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 19:14:57,132 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-07-21 19:14:57,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 19:14:57,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 19:14:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 19:14:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 19:14:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 19:14:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 19:14:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 19:14:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 19:14:57,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 19:14:57,516 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 19:14:57,517 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-21 19:14:57,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:14:57 BoogieIcfgContainer [2020-07-21 19:14:57,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 19:14:57,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 19:14:57,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 19:14:57,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 19:14:57,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:14:56" (1/3) ... [2020-07-21 19:14:57,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efe85d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:14:57, skipping insertion in model container [2020-07-21 19:14:57,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:56" (2/3) ... [2020-07-21 19:14:57,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efe85d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:14:57, skipping insertion in model container [2020-07-21 19:14:57,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:14:57" (3/3) ... [2020-07-21 19:14:57,529 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1071.c [2020-07-21 19:14:57,540 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 19:14:57,548 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 19:14:57,563 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 19:14:57,584 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 19:14:57,584 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 19:14:57,584 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 19:14:57,584 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 19:14:57,585 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 19:14:57,585 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 19:14:57,585 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 19:14:57,585 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 19:14:57,601 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-21 19:14:57,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 19:14:57,608 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:14:57,609 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 19:14:57,610 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:14:57,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:14:57,615 INFO L82 PathProgramCache]: Analyzing trace with hash -452059413, now seen corresponding path program 1 times [2020-07-21 19:14:57,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:14:57,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884867398] [2020-07-21 19:14:57,623 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 19:14:57,725 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:14:57,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:14:57,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 19:14:57,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:14:57,756 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 19:14:57,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:14:57,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884867398] [2020-07-21 19:14:57,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:14:57,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 19:14:57,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450522581] [2020-07-21 19:14:57,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 19:14:57,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:14:57,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 19:14:57,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 19:14:57,784 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-07-21 19:14:57,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:14:57,810 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2020-07-21 19:14:57,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 19:14:57,812 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-07-21 19:14:57,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:14:57,824 INFO L225 Difference]: With dead ends: 66 [2020-07-21 19:14:57,825 INFO L226 Difference]: Without dead ends: 33 [2020-07-21 19:14:57,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 19:14:57,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-21 19:14:57,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-21 19:14:57,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-21 19:14:57,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-07-21 19:14:57,870 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 23 [2020-07-21 19:14:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:14:57,871 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-07-21 19:14:57,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 19:14:57,872 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-07-21 19:14:57,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 19:14:57,873 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:14:57,873 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] [2020-07-21 19:14:58,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:14:58,087 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:14:58,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:14:58,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1570049965, now seen corresponding path program 1 times [2020-07-21 19:14:58,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:14:58,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533803434] [2020-07-21 19:14:58,090 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 19:14:58,202 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:14:58,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 19:14:58,202 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:14:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 19:14:58,231 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:14:58,253 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 19:14:58,254 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 19:14:58,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:14:58,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:14:58 BoogieIcfgContainer [2020-07-21 19:14:58,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 19:14:58,504 INFO L168 Benchmark]: Toolchain (without parser) took 1851.71 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 103.7 MB in the beginning and 117.3 MB in the end (delta: -13.6 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:58,505 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 19:14:58,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.18 ms. Allocated memory is still 138.9 MB. Free memory was 103.3 MB in the beginning and 92.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:58,507 INFO L168 Benchmark]: Boogie Preprocessor took 133.50 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 92.1 MB in the beginning and 180.7 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:58,507 INFO L168 Benchmark]: RCFGBuilder took 448.94 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 158.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:58,508 INFO L168 Benchmark]: TraceAbstraction took 978.75 ms. Allocated memory is still 203.4 MB. Free memory was 158.8 MB in the beginning and 117.3 MB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:58,512 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 285.18 ms. Allocated memory is still 138.9 MB. Free memory was 103.3 MB in the beginning and 92.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.50 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 92.1 MB in the beginning and 180.7 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 448.94 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 158.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 978.75 ms. Allocated memory is still 203.4 MB. Free memory was 158.8 MB in the beginning and 117.3 MB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 74]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L68] double x = 0.0 / 0.0; [L70] CALL, EXPR trunc_double(x) VAL [\old(x)=3] [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; VAL [\old(x)=3, x=3] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=3, exponent_less_1023=1024, lsw=9, msw=0, signbit=4294967295, x=3] [L30] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=3, exponent_less_1023=1024, lsw=9, msw=0, signbit=4294967295, x=3] [L47] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=3, exponent_less_1023=1024, lsw=9, msw=0, signbit=4294967295, x=3] [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; VAL [\old(x)=3, exponent_less_1023=1024, lsw=9, msw=0, signbit=4294967295, x=3] [L70] RET, EXPR trunc_double(x) VAL [trunc_double(x)=4, x=3] [L70] double res = trunc_double(x); [L73] CALL, EXPR isnan_double(res) VAL [\old(x)=4] [L15] return x != x; VAL [\old(x)=4, \result=0, x=4] [L73] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4, x=3] [L73] COND TRUE !isnan_double(res) [L74] __VERIFIER_error() VAL [res=4, x=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 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: 40 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 73 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...