/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 10:39:55,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 10:39:55,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 10:39:55,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 10:39:55,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 10:39:55,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 10:39:55,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 10:39:55,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 10:39:55,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 10:39:55,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 10:39:55,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 10:39:55,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 10:39:55,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 10:39:55,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 10:39:55,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 10:39:55,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 10:39:55,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 10:39:55,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 10:39:55,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 10:39:55,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 10:39:55,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 10:39:55,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 10:39:55,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 10:39:55,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 10:39:55,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 10:39:55,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 10:39:55,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 10:39:55,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 10:39:55,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 10:39:55,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 10:39:55,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 10:39:55,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 10:39:55,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 10:39:55,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 10:39:55,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 10:39:55,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 10:39:55,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 10:39:55,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 10:39:55,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 10:39:55,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 10:39:55,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 10:39:55,620 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 10:39:55,634 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 10:39:55,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 10:39:55,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 10:39:55,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 10:39:55,636 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 10:39:55,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 10:39:55,636 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 10:39:55,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 10:39:55,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 10:39:55,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 10:39:55,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 10:39:55,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 10:39:55,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 10:39:55,638 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 10:39:55,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 10:39:55,638 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 10:39:55,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 10:39:55,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 10:39:55,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 10:39:55,639 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 10:39:55,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 10:39:55,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 10:39:55,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 10:39:55,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 10:39:55,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 10:39:55,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 10:39:55,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:55,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 10:39:55,641 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 10:39:55,641 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 -> NOT_INCREMENTALLY [2020-07-21 10:39:55,919 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 10:39:55,932 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 10:39:55,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 10:39:55,937 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 10:39:55,938 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 10:39:55,938 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-21 10:39:56,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e47227ec2/f6d97480c56e4ed9b77d1a29b2a366f9/FLAG3c26b3aae [2020-07-21 10:39:56,539 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 10:39:56,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-21 10:39:56,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e47227ec2/f6d97480c56e4ed9b77d1a29b2a366f9/FLAG3c26b3aae [2020-07-21 10:39:56,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e47227ec2/f6d97480c56e4ed9b77d1a29b2a366f9 [2020-07-21 10:39:56,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 10:39:56,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 10:39:56,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 10:39:56,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 10:39:56,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 10:39:56,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:56" (1/1) ... [2020-07-21 10:39:56,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@452d6337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:56, skipping insertion in model container [2020-07-21 10:39:56,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:56" (1/1) ... [2020-07-21 10:39:56,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 10:39:56,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 10:39:57,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:39:57,248 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 10:39:57,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:39:57,353 INFO L208 MainTranslator]: Completed translation [2020-07-21 10:39:57,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:57 WrapperNode [2020-07-21 10:39:57,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 10:39:57,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 10:39:57,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 10:39:57,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 10:39:57,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:57" (1/1) ... [2020-07-21 10:39:57,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:57" (1/1) ... [2020-07-21 10:39:57,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:57" (1/1) ... [2020-07-21 10:39:57,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:57" (1/1) ... [2020-07-21 10:39:57,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:57" (1/1) ... [2020-07-21 10:39:57,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:57" (1/1) ... [2020-07-21 10:39:57,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:57" (1/1) ... [2020-07-21 10:39:57,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 10:39:57,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 10:39:57,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 10:39:57,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 10:39:57,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:57" (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 10:39:57,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 10:39:57,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 10:39:57,483 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 10:39:57,483 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-21 10:39:57,483 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-21 10:39:57,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 10:39:57,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 10:39:57,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 10:39:57,483 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 10:39:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-21 10:39:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 10:39:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 10:39:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 10:39:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 10:39:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 10:39:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 10:39:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-21 10:39:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 10:39:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 10:39:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 10:39:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 10:39:58,146 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 10:39:58,146 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-21 10:39:58,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:39:58 BoogieIcfgContainer [2020-07-21 10:39:58,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 10:39:58,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 10:39:58,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 10:39:58,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 10:39:58,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:39:56" (1/3) ... [2020-07-21 10:39:58,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfb5862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:39:58, skipping insertion in model container [2020-07-21 10:39:58,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:57" (2/3) ... [2020-07-21 10:39:58,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfb5862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:39:58, skipping insertion in model container [2020-07-21 10:39:58,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:39:58" (3/3) ... [2020-07-21 10:39:58,164 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-07-21 10:39:58,175 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 10:39:58,187 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 10:39:58,201 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 10:39:58,225 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 10:39:58,226 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 10:39:58,226 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 10:39:58,226 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 10:39:58,226 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 10:39:58,226 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 10:39:58,227 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 10:39:58,227 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 10:39:58,245 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-21 10:39:58,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 10:39:58,253 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:39:58,254 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] [2020-07-21 10:39:58,254 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:39:58,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:39:58,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-07-21 10:39:58,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:39:58,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570341429] [2020-07-21 10:39:58,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:39:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:39:58,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 10:39:58,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:39:58,411 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 10:39:58,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:39:58,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570341429] [2020-07-21 10:39:58,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:39:58,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 10:39:58,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148246655] [2020-07-21 10:39:58,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 10:39:58,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:39:58,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 10:39:58,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 10:39:58,458 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-21 10:39:58,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:39:58,494 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-07-21 10:39:58,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 10:39:58,495 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-21 10:39:58,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:39:58,507 INFO L225 Difference]: With dead ends: 138 [2020-07-21 10:39:58,507 INFO L226 Difference]: Without dead ends: 68 [2020-07-21 10:39:58,512 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 [2020-07-21 10:39:58,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-21 10:39:58,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-21 10:39:58,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-21 10:39:58,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-21 10:39:58,561 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-07-21 10:39:58,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:39:58,561 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-21 10:39:58,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 10:39:58,562 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-21 10:39:58,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 10:39:58,563 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:39:58,564 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] [2020-07-21 10:39:58,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:58,778 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:39:58,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:39:58,779 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-07-21 10:39:58,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:39:58,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689275085] [2020-07-21 10:39:58,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:39:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:39:58,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:39:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:39:58,906 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:39:58,948 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 10:39:58,949 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 10:39:59,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:59,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:39:59 BoogieIcfgContainer [2020-07-21 10:39:59,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 10:39:59,203 INFO L168 Benchmark]: Toolchain (without parser) took 2335.57 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 99.6 MB in the beginning and 83.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:59,204 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 10:39:59,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.18 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 99.1 MB in the beginning and 174.4 MB in the end (delta: -75.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:59,206 INFO L168 Benchmark]: Boogie Preprocessor took 63.45 ms. Allocated memory is still 199.8 MB. Free memory was 174.4 MB in the beginning and 171.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:59,207 INFO L168 Benchmark]: RCFGBuilder took 736.33 ms. Allocated memory is still 199.8 MB. Free memory was 171.6 MB in the beginning and 135.3 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:59,207 INFO L168 Benchmark]: TraceAbstraction took 1044.91 ms. Allocated memory is still 199.8 MB. Free memory was 134.6 MB in the beginning and 83.0 MB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:59,211 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 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 485.18 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 99.1 MB in the beginning and 174.4 MB in the end (delta: -75.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.45 ms. Allocated memory is still 199.8 MB. Free memory was 174.4 MB in the beginning and 171.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 736.33 ms. Allocated memory is still 199.8 MB. Free memory was 171.6 MB in the beginning and 135.3 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1044.91 ms. Allocated memory is still 199.8 MB. Free memory was 134.6 MB in the beginning and 83.0 MB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: 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 someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, 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={15923:0}] [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={15923:0}] [L164] __int32_t hx; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={15923:0}] [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=3, \result=-1, hx=0, one_fmod=1, x=3, Zero_fmod={15923:0}] [L183] RET isfinite_double(x) VAL [isfinite_double(x)=-1, one_fmod=1, x=3, Zero_fmod={15923:0}] [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) VAL [\old(x)=3, \old(y)=5, one_fmod=1, Zero_fmod={15923:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [\old(x)=3, \old(y)=5, one_fmod=1, x=3, y=5, Zero_fmod={15923:0}] [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)=3, \old(y)=5, lx=17, ly=20, one_fmod=1, sx=26285, x=3, y=5, Zero_fmod={15923:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=5, hx=0, lx=17, ly=20, one_fmod=1, sx=26285, x=3, y=5, Zero_fmod={15923:0}] [L185] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=8, one_fmod=1, x=3, y=5, Zero_fmod={15923:0}] [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={15923:0}] [L189] __VERIFIER_error() VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={15923:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 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: 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 106 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...