/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:07:31,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 21:07:31,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 21:07:31,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 21:07:31,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:07:31,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:07:31,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:07:31,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:07:31,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:07:31,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:07:31,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:07:31,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:07:31,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:07:31,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:07:31,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:07:31,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:07:31,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:07:31,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:07:31,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:07:31,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:07:31,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:07:31,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:07:31,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:07:31,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:07:31,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 21:07:31,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:07:31,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:07:31,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:07:31,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 21:07:31,705 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:07:31,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:07:31,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:07:31,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:07:31,707 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:07:31,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:07:31,707 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:07:31,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:07:31,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:07:31,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:07:31,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:07:31,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:07:31,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:07:31,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:07:31,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:07:31,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:07:31,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:07:31,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:07:31,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:07:31,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:07:31,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:07:31,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:07:31,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:07:31,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:07:31,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:07:31,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:07:31,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:31,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:07:31,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:07:31,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 21:07:32,013 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:07:32,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:07:32,028 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:07:32,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:07:32,030 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:07:32,030 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-07-20 21:07:32,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8d17fd3/40677a1d3cdb4fe8af413684a44d86a6/FLAG1af6a0b83 [2020-07-20 21:07:32,571 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:07:32,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-07-20 21:07:32,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8d17fd3/40677a1d3cdb4fe8af413684a44d86a6/FLAG1af6a0b83 [2020-07-20 21:07:33,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8d17fd3/40677a1d3cdb4fe8af413684a44d86a6 [2020-07-20 21:07:33,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:07:33,073 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:07:33,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:07:33,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:07:33,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:07:33,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:07:33" (1/1) ... [2020-07-20 21:07:33,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb6ae03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33, skipping insertion in model container [2020-07-20 21:07:33,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:07:33" (1/1) ... [2020-07-20 21:07:33,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:07:33,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:07:33,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:07:33,440 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:07:33,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:07:33,513 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:07:33,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33 WrapperNode [2020-07-20 21:07:33,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:07:33,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:07:33,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:07:33,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:07:33,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (1/1) ... [2020-07-20 21:07:33,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (1/1) ... [2020-07-20 21:07:33,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (1/1) ... [2020-07-20 21:07:33,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (1/1) ... [2020-07-20 21:07:33,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (1/1) ... [2020-07-20 21:07:33,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (1/1) ... [2020-07-20 21:07:33,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (1/1) ... [2020-07-20 21:07:33,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:07:33,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:07:33,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:07:33,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:07:33,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:07:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:07:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:07:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-20 21:07:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-20 21:07:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:07:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:07:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 21:07:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-20 21:07:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 21:07:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 21:07:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 21:07:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 21:07:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 21:07:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 21:07:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-20 21:07:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:07:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:07:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 21:07:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:07:34,249 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:07:34,249 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-20 21:07:34,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:07:34 BoogieIcfgContainer [2020-07-20 21:07:34,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:07:34,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:07:34,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:07:34,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:07:34,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:07:33" (1/3) ... [2020-07-20 21:07:34,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e36d805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:07:34, skipping insertion in model container [2020-07-20 21:07:34,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (2/3) ... [2020-07-20 21:07:34,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e36d805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:07:34, skipping insertion in model container [2020-07-20 21:07:34,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:07:34" (3/3) ... [2020-07-20 21:07:34,268 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-07-20 21:07:34,277 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:07:34,284 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:07:34,297 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:07:34,321 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:07:34,321 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:07:34,322 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:07:34,322 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:07:34,322 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:07:34,322 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:07:34,323 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:07:34,323 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:07:34,343 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-20 21:07:34,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 21:07:34,350 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:07:34,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:07:34,352 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:07:34,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:07:34,358 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-07-20 21:07:34,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:07:34,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138718862] [2020-07-20 21:07:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:34,528 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:07:34,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:07:34,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 21:07:34,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:07:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:07:34,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:07:34,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138718862] [2020-07-20 21:07:34,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:07:34,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 21:07:34,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980608352] [2020-07-20 21:07:34,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 21:07:34,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:07:34,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 21:07:34,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 21:07:34,596 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-20 21:07:34,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:07:34,653 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-07-20 21:07:34,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 21:07:34,655 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-20 21:07:34,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:07:34,669 INFO L225 Difference]: With dead ends: 138 [2020-07-20 21:07:34,670 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 21:07:34,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 21:07:34,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 21:07:34,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-20 21:07:34,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-20 21:07:34,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-20 21:07:34,720 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-07-20 21:07:34,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:07:34,720 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-20 21:07:34,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 21:07:34,721 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-20 21:07:34,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 21:07:34,722 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:07:34,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:07:34,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:34,925 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:07:34,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:07:34,929 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-07-20 21:07:34,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:07:34,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914857489] [2020-07-20 21:07:34,931 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:35,057 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:07:35,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 21:07:35,058 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:07:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 21:07:35,094 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:07:35,174 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 21:07:35,175 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 21:07:35,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:35,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:07:35 BoogieIcfgContainer [2020-07-20 21:07:35,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:07:35,444 INFO L168 Benchmark]: Toolchain (without parser) took 2370.43 ms. Allocated memory was 136.3 MB in the beginning and 229.1 MB in the end (delta: 92.8 MB). Free memory was 99.6 MB in the beginning and 196.0 MB in the end (delta: -96.4 MB). Peak memory consumption was 89.1 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:35,445 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 21:07:35,446 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.91 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 99.4 MB in the beginning and 174.4 MB in the end (delta: -75.0 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:35,447 INFO L168 Benchmark]: Boogie Preprocessor took 69.59 ms. Allocated memory is still 199.8 MB. Free memory was 174.4 MB in the beginning and 171.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:35,448 INFO L168 Benchmark]: RCFGBuilder took 673.88 ms. Allocated memory is still 199.8 MB. Free memory was 171.3 MB in the beginning and 135.8 MB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:35,449 INFO L168 Benchmark]: TraceAbstraction took 1181.77 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 135.1 MB in the beginning and 196.0 MB in the end (delta: -60.9 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:35,453 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 439.91 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 99.4 MB in the beginning and 174.4 MB in the end (delta: -75.0 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.59 ms. Allocated memory is still 199.8 MB. Free memory was 174.4 MB in the beginning and 171.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 673.88 ms. Allocated memory is still 199.8 MB. Free memory was 171.3 MB in the beginning and 135.8 MB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1181.77 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 135.1 MB in the beginning and 196.0 MB in the end (delta: -60.9 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=7, \old(Zero_fmod)=9, one_fmod=1, Zero_fmod={28884:0}] [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={28884:0}] [L161] __int32_t hx; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={28884:0}] [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=3, \result=-1, hx=0, one_fmod=1, x=3, Zero_fmod={28884:0}] [L180] RET isfinite_double(x) VAL [isfinite_double(x)=-1, one_fmod=1, x=3, Zero_fmod={28884:0}] [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) VAL [\old(x)=3, \old(y)=5, one_fmod=1, Zero_fmod={28884:0}] [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; VAL [\old(x)=3, \old(y)=5, one_fmod=1, x=3, y=5, Zero_fmod={28884:0}] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff VAL [\old(x)=3, \old(y)=5, lx=15, ly=19, one_fmod=1, sx=9725, x=3, y=5, Zero_fmod={28884:0}] [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=5, hx=0, lx=15, ly=19, one_fmod=1, sx=9725, x=3, y=5, Zero_fmod={28884:0}] [L182] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=8, one_fmod=1, x=3, y=5, Zero_fmod={28884:0}] [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={28884:0}] [L186] __VERIFIER_error() VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={28884:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 53 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 102 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...