/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 10:39:55,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 10:39:55,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 10:39:55,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 10:39:55,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 10:39:55,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 10:39:55,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 10:39:55,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 10:39:55,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 10:39:55,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 10:39:55,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 10:39:55,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 10:39:55,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 10:39:55,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 10:39:55,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 10:39:55,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 10:39:55,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 10:39:55,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 10:39:55,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 10:39:55,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 10:39:55,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 10:39:55,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 10:39:55,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 10:39:55,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 10:39:55,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 10:39:55,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 10:39:55,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 10:39:55,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 10:39:55,706 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 10:39:55,742 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 10:39:55,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 10:39:55,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 10:39:55,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 10:39:55,745 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 10:39:55,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 10:39:55,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 10:39:55,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 10:39:55,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 10:39:55,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 10:39:55,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 10:39:55,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 10:39:55,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 10:39:55,747 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 10:39:55,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 10:39:55,747 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 10:39:55,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 10:39:55,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 10:39:55,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 10:39:55,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 10:39:55,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 10:39:55,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 10:39:55,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 10:39:55,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 10:39:55,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 10:39:55,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 10:39:55,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:55,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 10:39:55,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 10:39:55,751 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 10:39:56,036 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 10:39:56,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 10:39:56,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 10:39:56,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 10:39:56,056 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 10:39:56,056 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-07-21 10:39:56,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5edd843cb/c2e6fb65d533475c9b2c20f23ac72d84/FLAG9fb8a9a83 [2020-07-21 10:39:56,641 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 10:39:56,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-07-21 10:39:56,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5edd843cb/c2e6fb65d533475c9b2c20f23ac72d84/FLAG9fb8a9a83 [2020-07-21 10:39:56,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5edd843cb/c2e6fb65d533475c9b2c20f23ac72d84 [2020-07-21 10:39:56,993 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 10:39:56,997 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 10:39:57,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 10:39:57,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 10:39:57,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 10:39:57,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:56" (1/1) ... [2020-07-21 10:39:57,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f9047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:57, skipping insertion in model container [2020-07-21 10:39:57,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:56" (1/1) ... [2020-07-21 10:39:57,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 10:39:57,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 10:39:57,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:39:57,289 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 10:39:57,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:39:57,461 INFO L208 MainTranslator]: Completed translation [2020-07-21 10:39:57,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:57 WrapperNode [2020-07-21 10:39:57,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 10:39:57,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 10:39:57,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 10:39:57,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 10:39:57,473 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 10:39:57,473 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 10:39:57,485 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 10:39:57,486 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 10:39:57,504 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 10:39:57,515 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 10:39:57,518 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 10:39:57,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 10:39:57,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 10:39:57,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 10:39:57,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 10:39:57,525 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 10:39:57,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 10:39:57,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 10:39:57,591 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-21 10:39:57,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-21 10:39:57,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 10:39:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 10:39:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 10:39:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-21 10:39:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 10:39:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 10:39:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 10:39:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 10:39:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 10:39:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 10:39:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-21 10:39:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 10:39:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 10:39:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 10:39:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 10:39:58,187 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 10:39:58,188 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-21 10:39:58,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:39:58 BoogieIcfgContainer [2020-07-21 10:39:58,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 10:39:58,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 10:39:58,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 10:39:58,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 10:39:58,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:39:56" (1/3) ... [2020-07-21 10:39:58,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f3eb75 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 10:39:58,203 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 10:39:58,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f3eb75 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 10:39:58,205 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 10:39:58,207 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-07-21 10:39:58,215 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 10:39:58,224 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 10:39:58,238 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 10:39:58,262 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 10:39:58,262 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 10:39:58,262 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 10:39:58,262 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 10:39:58,263 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 10:39:58,263 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 10:39:58,263 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 10:39:58,263 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 10:39:58,280 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-21 10:39:58,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 10:39:58,287 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:39:58,288 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 10:39:58,289 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:39:58,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:39:58,294 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-07-21 10:39:58,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:39:58,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082090506] [2020-07-21 10:39:58,303 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 10:39:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:39:58,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 10:39:58,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:39:58,482 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 10:39:58,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:39:58,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082090506] [2020-07-21 10:39:58,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:39:58,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 10:39:58,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704477469] [2020-07-21 10:39:58,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 10:39:58,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:39:58,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 10:39:58,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 10:39:58,507 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-21 10:39:58,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:39:58,538 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-07-21 10:39:58,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 10:39:58,540 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-21 10:39:58,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:39:58,550 INFO L225 Difference]: With dead ends: 138 [2020-07-21 10:39:58,551 INFO L226 Difference]: Without dead ends: 68 [2020-07-21 10:39:58,555 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 10:39:58,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-21 10:39:58,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-21 10:39:58,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-21 10:39:58,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-21 10:39:58,593 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-07-21 10:39:58,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:39:58,593 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-21 10:39:58,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 10:39:58,594 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-21 10:39:58,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 10:39:58,595 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:39:58,595 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 10:39:58,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:58,810 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:39:58,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:39:58,812 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-07-21 10:39:58,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:39:58,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865349908] [2020-07-21 10:39:58,813 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 10:39:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:39:58,925 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:39:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:39:58,972 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:39:59,051 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 10:39:59,051 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 10:39:59,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:59,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:39:59 BoogieIcfgContainer [2020-07-21 10:39:59,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 10:39:59,302 INFO L168 Benchmark]: Toolchain (without parser) took 2306.26 ms. Allocated memory was 145.2 MB in the beginning and 235.4 MB in the end (delta: 90.2 MB). Free memory was 101.5 MB in the beginning and 202.3 MB in the end (delta: -100.8 MB). Peak memory consumption was 78.9 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:59,303 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 145.2 MB. Free memory was 120.4 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 10:39:59,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 460.80 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.1 MB in the beginning and 178.1 MB in the end (delta: -77.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:59,305 INFO L168 Benchmark]: Boogie Preprocessor took 60.76 ms. Allocated memory is still 202.9 MB. Free memory was 178.1 MB in the beginning and 175.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:59,306 INFO L168 Benchmark]: RCFGBuilder took 671.69 ms. Allocated memory is still 202.9 MB. Free memory was 175.4 MB in the beginning and 139.7 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:59,307 INFO L168 Benchmark]: TraceAbstraction took 1103.23 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 139.0 MB in the beginning and 202.3 MB in the end (delta: -63.3 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:59,311 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 145.2 MB. Free memory was 120.4 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 460.80 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.1 MB in the beginning and 178.1 MB in the end (delta: -77.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.76 ms. Allocated memory is still 202.9 MB. Free memory was 178.1 MB in the beginning and 175.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 671.69 ms. Allocated memory is still 202.9 MB. Free memory was 175.4 MB in the beginning and 139.7 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1103.23 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 139.0 MB in the beginning and 202.3 MB in the end (delta: -63.3 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: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=9, \old(Zero_fmod)=7, one_fmod=1, Zero_fmod={26287:0}] [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={26287:0}] [L161] __int32_t hx; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={26287:0}] [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=3, \result=-2147483648, hx=2147483647, one_fmod=1, x=3, Zero_fmod={26287:0}] [L180] RET isfinite_double(x) VAL [isfinite_double(x)=-2147483648, one_fmod=1, x=3, Zero_fmod={26287:0}] [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) VAL [\old(x)=3, \old(y)=5, one_fmod=1, Zero_fmod={26287:0}] [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; VAL [\old(x)=3, \old(y)=5, one_fmod=1, x=3, y=5, Zero_fmod={26287:0}] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff VAL [\old(x)=3, \old(y)=5, lx=15, ly=19, one_fmod=1, sx=14680, x=3, y=5, Zero_fmod={26287:0}] [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=5, hx=0, lx=15, ly=19, one_fmod=1, sx=14680, x=3, y=5, Zero_fmod={26287:0}] [L182] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=8, one_fmod=1, x=3, y=5, Zero_fmod={26287:0}] [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={26287:0}] [L186] __VERIFIER_error() VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={26287:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 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...