/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 19:14:58,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 19:14:58,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 19:14:58,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 19:14:58,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 19:14:58,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 19:14:58,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 19:14:58,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 19:14:58,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 19:14:58,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 19:14:58,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 19:14:58,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 19:14:58,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 19:14:58,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 19:14:58,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 19:14:58,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 19:14:58,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 19:14:58,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 19:14:58,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 19:14:58,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 19:14:58,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 19:14:58,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 19:14:58,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 19:14:58,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 19:14:58,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 19:14:58,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 19:14:58,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 19:14:58,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 19:14:58,332 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 19:14:58,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 19:14:58,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 19:14:58,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 19:14:58,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 19:14:58,374 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 19:14:58,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 19:14:58,374 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 19:14:58,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 19:14:58,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 19:14:58,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 19:14:58,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 19:14:58,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 19:14:58,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 19:14:58,376 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 19:14:58,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 19:14:58,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 19:14:58,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 19:14:58,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 19:14:58,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 19:14:58,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 19:14:58,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 19:14:58,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 19:14:58,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 19:14:58,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 19:14:58,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 19:14:58,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 19:14:58,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:14:58,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 19:14:58,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 19:14:58,379 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 19:14:58,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 19:14:58,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 19:14:58,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 19:14:58,684 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 19:14:58,685 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 19:14:58,685 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-21 19:14:58,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2be4daf0/a56698bde14144268ce248a8b991487d/FLAGfa8d99320 [2020-07-21 19:14:59,176 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 19:14:59,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-21 19:14:59,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2be4daf0/a56698bde14144268ce248a8b991487d/FLAGfa8d99320 [2020-07-21 19:14:59,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2be4daf0/a56698bde14144268ce248a8b991487d [2020-07-21 19:14:59,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 19:14:59,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 19:14:59,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 19:14:59,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 19:14:59,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 19:14:59,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:14:59" (1/1) ... [2020-07-21 19:14:59,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70031795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:59, skipping insertion in model container [2020-07-21 19:14:59,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:14:59" (1/1) ... [2020-07-21 19:14:59,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 19:14:59,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 19:14:59,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:14:59,905 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 19:15:00,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:15:00,115 INFO L208 MainTranslator]: Completed translation [2020-07-21 19:15:00,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00 WrapperNode [2020-07-21 19:15:00,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 19:15:00,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 19:15:00,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 19:15:00,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 19:15:00,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (1/1) ... [2020-07-21 19:15:00,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (1/1) ... [2020-07-21 19:15:00,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (1/1) ... [2020-07-21 19:15:00,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (1/1) ... [2020-07-21 19:15:00,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (1/1) ... [2020-07-21 19:15:00,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (1/1) ... [2020-07-21 19:15:00,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (1/1) ... [2020-07-21 19:15:00,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 19:15:00,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 19:15:00,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 19:15:00,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 19:15:00,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (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 19:15:00,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 19:15:00,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 19:15:00,243 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 19:15:00,244 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-21 19:15:00,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-21 19:15:00,244 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 19:15:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 19:15:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 19:15:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 19:15:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-21 19:15:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 19:15:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 19:15:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 19:15:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 19:15:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 19:15:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 19:15:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-21 19:15:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 19:15:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 19:15:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 19:15:00,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 19:15:00,880 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 19:15:00,880 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-21 19:15:00,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:15:00 BoogieIcfgContainer [2020-07-21 19:15:00,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 19:15:00,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 19:15:00,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 19:15:00,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 19:15:00,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:14:59" (1/3) ... [2020-07-21 19:15:00,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565ec387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:15:00, skipping insertion in model container [2020-07-21 19:15:00,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (2/3) ... [2020-07-21 19:15:00,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565ec387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:15:00, skipping insertion in model container [2020-07-21 19:15:00,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:15:00" (3/3) ... [2020-07-21 19:15:00,894 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-07-21 19:15:00,905 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 19:15:00,913 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 19:15:00,928 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 19:15:00,949 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 19:15:00,949 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 19:15:00,949 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 19:15:00,949 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 19:15:00,950 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 19:15:00,950 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 19:15:00,950 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 19:15:00,950 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 19:15:00,969 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-21 19:15:00,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 19:15:00,977 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:15:00,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:15:00,979 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:15:00,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:15:00,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-07-21 19:15:00,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:15:00,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701977520] [2020-07-21 19:15:00,997 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 19:15:01,119 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:15:01,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:15:01,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 19:15:01,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:15:01,153 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 19:15:01,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:15:01,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701977520] [2020-07-21 19:15:01,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:15:01,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 19:15:01,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042759280] [2020-07-21 19:15:01,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 19:15:01,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:15:01,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 19:15:01,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 19:15:01,181 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-07-21 19:15:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:15:01,218 INFO L93 Difference]: Finished difference Result 139 states and 229 transitions. [2020-07-21 19:15:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 19:15:01,220 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-21 19:15:01,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:15:01,235 INFO L225 Difference]: With dead ends: 139 [2020-07-21 19:15:01,236 INFO L226 Difference]: Without dead ends: 69 [2020-07-21 19:15:01,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 19:15:01,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-21 19:15:01,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-07-21 19:15:01,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-21 19:15:01,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-07-21 19:15:01,310 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-07-21 19:15:01,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:15:01,311 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-07-21 19:15:01,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 19:15:01,312 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-07-21 19:15:01,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 19:15:01,314 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:15:01,314 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] [2020-07-21 19:15:01,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:01,528 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:15:01,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:15:01,530 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-07-21 19:15:01,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:15:01,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696773122] [2020-07-21 19:15:01,531 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 19:15:01,621 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:15:01,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 19:15:01,621 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:15:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 19:15:01,648 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:15:01,683 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 19:15:01,683 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 19:15:01,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:01,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:15:01 BoogieIcfgContainer [2020-07-21 19:15:01,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 19:15:01,958 INFO L168 Benchmark]: Toolchain (without parser) took 2374.90 ms. Allocated memory was 137.4 MB in the beginning and 232.8 MB in the end (delta: 95.4 MB). Free memory was 101.1 MB in the beginning and 202.3 MB in the end (delta: -101.2 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:01,959 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 19:15:01,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 531.69 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 176.9 MB in the end (delta: -76.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:01,961 INFO L168 Benchmark]: Boogie Preprocessor took 62.79 ms. Allocated memory is still 201.9 MB. Free memory was 176.9 MB in the beginning and 174.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:01,962 INFO L168 Benchmark]: RCFGBuilder took 705.81 ms. Allocated memory is still 201.9 MB. Free memory was 174.2 MB in the beginning and 137.7 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:01,963 INFO L168 Benchmark]: TraceAbstraction took 1069.13 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 137.0 MB in the beginning and 202.3 MB in the end (delta: -65.3 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:01,968 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 531.69 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 176.9 MB in the end (delta: -76.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.79 ms. Allocated memory is still 201.9 MB. Free memory was 176.9 MB in the beginning and 174.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 705.81 ms. Allocated memory is still 201.9 MB. Free memory was 174.2 MB in the beginning and 137.7 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1069.13 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 137.0 MB in the beginning and 202.3 MB in the end (delta: -65.3 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=9, \old(Zero_fmod)=7, one_fmod=1, Zero_fmod={4:0}] [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 VAL [one_fmod=1, x=0, y=3, Zero_fmod={4:0}] [L187] CALL, EXPR fmod_double(x, y) VAL [\old(x)=0, \old(y)=3, one_fmod=1, Zero_fmod={4:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [\old(x)=0, \old(y)=3, one_fmod=1, x=0, y=3, Zero_fmod={4:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=3, lx=13, ly=17, one_fmod=1, sx=28100, x=0, y=3, Zero_fmod={4:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=3, hx=0, lx=13, ly=17, one_fmod=1, sx=28100, x=0, y=3, Zero_fmod={4:0}] [L187] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=6, one_fmod=1, x=0, y=3, Zero_fmod={4:0}] [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, res=6, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=3, Zero_fmod={4:0}] [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() VAL [one_fmod=1, res=6, x=0, y=3, Zero_fmod={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 89 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...