/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:07:29,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 21:07:29,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 21:07:29,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 21:07:29,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:07:29,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:07:29,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:07:29,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:07:29,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:07:29,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:07:29,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:07:29,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:07:29,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:07:29,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:07:29,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:07:29,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:07:29,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:07:29,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:07:29,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:07:29,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:07:29,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:07:29,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:07:29,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:07:29,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:07:29,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 21:07:29,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:07:29,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:07:29,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:07:29,457 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 21:07:29,479 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:07:29,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:07:29,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:07:29,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:07:29,482 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:07:29,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:07:29,482 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:07:29,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:07:29,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:07:29,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:07:29,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:07:29,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:07:29,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:07:29,485 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:07:29,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:07:29,485 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:07:29,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:07:29,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:07:29,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:07:29,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:07:29,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:07:29,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:07:29,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:07:29,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:07:29,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:07:29,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:07:29,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:29,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:07:29,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:07:29,488 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 21:07:29,806 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:07:29,821 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:07:29,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:07:29,826 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:07:29,826 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:07:29,827 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-20 21:07:29,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0373ddc1/d04ad665766c4e56b78625e03554384f/FLAGf97c56592 [2020-07-20 21:07:30,375 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:07:30,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-20 21:07:30,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0373ddc1/d04ad665766c4e56b78625e03554384f/FLAGf97c56592 [2020-07-20 21:07:30,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0373ddc1/d04ad665766c4e56b78625e03554384f [2020-07-20 21:07:30,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:07:30,782 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:07:30,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:07:30,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:07:30,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:07:30,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:07:30" (1/1) ... [2020-07-20 21:07:30,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc75fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:30, skipping insertion in model container [2020-07-20 21:07:30,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:07:30" (1/1) ... [2020-07-20 21:07:30,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:07:30,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:07:31,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:07:31,189 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:07:31,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:07:31,284 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:07:31,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:31 WrapperNode [2020-07-20 21:07:31,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:07:31,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:07:31,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:07:31,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:07:31,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:31" (1/1) ... [2020-07-20 21:07:31,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:31" (1/1) ... [2020-07-20 21:07:31,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:31" (1/1) ... [2020-07-20 21:07:31,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:31" (1/1) ... [2020-07-20 21:07:31,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:31" (1/1) ... [2020-07-20 21:07:31,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:31" (1/1) ... [2020-07-20 21:07:31,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:31" (1/1) ... [2020-07-20 21:07:31,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:07:31,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:07:31,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:07:31,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:07:31,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:31" (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 21:07:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:07:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:07:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 21:07:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-20 21:07:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-20 21:07:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:07:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:07:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 21:07:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 21:07:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-20 21:07:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 21:07:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 21:07:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 21:07:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 21:07:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 21:07:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 21:07:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-20 21:07:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:07:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:07:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 21:07:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:07:32,112 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:07:32,112 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-20 21:07:32,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:07:32 BoogieIcfgContainer [2020-07-20 21:07:32,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:07:32,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:07:32,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:07:32,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:07:32,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:07:30" (1/3) ... [2020-07-20 21:07:32,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611fbdc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:07:32, skipping insertion in model container [2020-07-20 21:07:32,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:31" (2/3) ... [2020-07-20 21:07:32,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611fbdc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:07:32, skipping insertion in model container [2020-07-20 21:07:32,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:07:32" (3/3) ... [2020-07-20 21:07:32,131 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-07-20 21:07:32,140 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:07:32,147 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:07:32,160 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:07:32,182 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:07:32,183 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:07:32,183 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:07:32,183 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:07:32,183 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:07:32,183 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:07:32,184 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:07:32,184 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:07:32,201 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-20 21:07:32,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 21:07:32,208 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:07:32,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:07:32,210 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:07:32,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:07:32,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-07-20 21:07:32,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:07:32,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005164974] [2020-07-20 21:07:32,223 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 21:07:32,340 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:07:32,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:07:32,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 21:07:32,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:07:32,371 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 21:07:32,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:07:32,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005164974] [2020-07-20 21:07:32,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:07:32,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 21:07:32,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237658883] [2020-07-20 21:07:32,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 21:07:32,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:07:32,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 21:07:32,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 21:07:32,398 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-07-20 21:07:32,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:07:32,433 INFO L93 Difference]: Finished difference Result 139 states and 229 transitions. [2020-07-20 21:07:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 21:07:32,435 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-20 21:07:32,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:07:32,446 INFO L225 Difference]: With dead ends: 139 [2020-07-20 21:07:32,446 INFO L226 Difference]: Without dead ends: 69 [2020-07-20 21:07:32,450 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 [2020-07-20 21:07:32,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-20 21:07:32,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-07-20 21:07:32,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-20 21:07:32,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-07-20 21:07:32,498 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-07-20 21:07:32,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:07:32,499 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-07-20 21:07:32,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 21:07:32,499 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-07-20 21:07:32,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 21:07:32,501 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:07:32,501 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] [2020-07-20 21:07:32,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:32,703 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:07:32,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:07:32,704 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-07-20 21:07:32,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:07:32,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806556126] [2020-07-20 21:07:32,705 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 21:07:32,798 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:07:32,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 21:07:32,799 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:07:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 21:07:32,850 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:07:32,881 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 21:07:32,881 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 21:07:33,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:33,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:07:33 BoogieIcfgContainer [2020-07-20 21:07:33,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:07:33,146 INFO L168 Benchmark]: Toolchain (without parser) took 2363.54 ms. Allocated memory was 138.9 MB in the beginning and 235.9 MB in the end (delta: 97.0 MB). Free memory was 103.5 MB in the beginning and 200.1 MB in the end (delta: -96.7 MB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:33,147 INFO L168 Benchmark]: CDTParser took 0.23 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. [2020-07-20 21:07:33,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 502.15 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 176.8 MB in the end (delta: -73.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:33,149 INFO L168 Benchmark]: Boogie Preprocessor took 62.20 ms. Allocated memory is still 201.9 MB. Free memory was 176.8 MB in the beginning and 174.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:33,149 INFO L168 Benchmark]: RCFGBuilder took 771.45 ms. Allocated memory is still 201.9 MB. Free memory was 174.1 MB in the beginning and 137.6 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:33,151 INFO L168 Benchmark]: TraceAbstraction took 1020.80 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 137.0 MB in the beginning and 200.1 MB in the end (delta: -63.2 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:33,155 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 502.15 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 176.8 MB in the end (delta: -73.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.20 ms. Allocated memory is still 201.9 MB. Free memory was 176.8 MB in the beginning and 174.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 771.45 ms. Allocated memory is still 201.9 MB. Free memory was 174.1 MB in the beginning and 137.6 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1020.80 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 137.0 MB in the beginning and 200.1 MB in the end (delta: -63.2 MB). Peak memory consumption was 55.4 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)=7, \old(Zero_fmod)=9, 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=1142, 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=1142, 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, 8 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...