/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 [2020-07-20 10:45:07,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:45:07,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:45:07,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:45:07,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:45:07,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:45:07,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:45:07,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:45:07,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:45:08,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:45:08,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:45:08,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:45:08,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:45:08,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:45:08,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:45:08,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:45:08,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:45:08,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:45:08,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:45:08,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:45:08,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:45:08,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:45:08,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:45:08,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:45:08,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 10:45:08,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:45:08,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:45:08,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:45:08,034 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 10:45:08,048 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:45:08,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:45:08,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:45:08,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:45:08,049 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:45:08,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:45:08,050 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:45:08,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:45:08,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:45:08,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:45:08,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:45:08,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:45:08,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:45:08,051 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:45:08,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:45:08,052 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:45:08,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:45:08,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:45:08,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:45:08,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:45:08,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:45:08,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:45:08,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:45:08,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:45:08,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:45:08,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:45:08,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:08,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:45:08,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:45:08,055 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 [2020-07-20 10:45:08,324 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:45:08,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:45:08,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:45:08,341 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:45:08,341 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:45:08,342 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-07-20 10:45:08,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10d9998dd/97046bd6e39b4b589f197533f014ed14/FLAG9dd775bea [2020-07-20 10:45:08,916 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:45:08,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-07-20 10:45:08,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10d9998dd/97046bd6e39b4b589f197533f014ed14/FLAG9dd775bea [2020-07-20 10:45:09,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10d9998dd/97046bd6e39b4b589f197533f014ed14 [2020-07-20 10:45:09,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:45:09,220 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:45:09,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:09,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:45:09,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:45:09,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1553bfc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09, skipping insertion in model container [2020-07-20 10:45:09,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:45:09,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:45:09,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:09,503 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:45:09,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:09,684 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:45:09,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09 WrapperNode [2020-07-20 10:45:09,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:09,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:45:09,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:45:09,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:45:09,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:45:09,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:45:09,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:45:09,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:45:09,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (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 10:45:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:45:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:45:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-20 10:45:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-20 10:45:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:45:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:45:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 10:45:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-20 10:45:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:45:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 10:45:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:45:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:45:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 10:45:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:45:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-20 10:45:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:45:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:45:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 10:45:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:45:10,339 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:45:10,340 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-20 10:45:10,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:10 BoogieIcfgContainer [2020-07-20 10:45:10,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:45:10,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:45:10,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:45:10,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:45:10,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:45:09" (1/3) ... [2020-07-20 10:45:10,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c454dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:10, skipping insertion in model container [2020-07-20 10:45:10,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (2/3) ... [2020-07-20 10:45:10,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c454dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:10, skipping insertion in model container [2020-07-20 10:45:10,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:10" (3/3) ... [2020-07-20 10:45:10,356 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-07-20 10:45:10,366 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:45:10,374 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:45:10,388 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:45:10,412 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:45:10,412 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:45:10,412 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:45:10,413 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:45:10,413 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:45:10,413 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:45:10,413 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:45:10,414 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:45:10,430 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-20 10:45:10,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 10:45:10,437 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:10,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:45:10,439 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:10,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:10,444 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-07-20 10:45:10,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:10,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947448912] [2020-07-20 10:45:10,454 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 [2020-07-20 10:45:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:10,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:45:10,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:10,606 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 10:45:10,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:10,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947448912] [2020-07-20 10:45:10,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:10,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:45:10,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848031670] [2020-07-20 10:45:10,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:45:10,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:10,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:45:10,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:45:10,631 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-20 10:45:10,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:10,661 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-07-20 10:45:10,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:45:10,663 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-20 10:45:10,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:10,673 INFO L225 Difference]: With dead ends: 138 [2020-07-20 10:45:10,673 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 10:45:10,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:45:10,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 10:45:10,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-20 10:45:10,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-20 10:45:10,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-20 10:45:10,718 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-07-20 10:45:10,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:10,719 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-20 10:45:10,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:45:10,719 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-20 10:45:10,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 10:45:10,721 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:10,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:45:10,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:10,936 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:10,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:10,938 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-07-20 10:45:10,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:10,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279478714] [2020-07-20 10:45:10,939 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 [2020-07-20 10:45:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:11,048 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:11,091 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:11,140 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:45:11,141 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:45:11,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:11,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:45:11 BoogieIcfgContainer [2020-07-20 10:45:11,396 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:45:11,399 INFO L168 Benchmark]: Toolchain (without parser) took 2180.04 ms. Allocated memory was 135.3 MB in the beginning and 200.3 MB in the end (delta: 65.0 MB). Free memory was 99.6 MB in the beginning and 84.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:11,400 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 135.3 MB. Free memory was 118.4 MB in the beginning and 118.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 10:45:11,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 464.04 ms. Allocated memory was 135.3 MB in the beginning and 200.3 MB in the end (delta: 65.0 MB). Free memory was 99.1 MB in the beginning and 176.0 MB in the end (delta: -76.9 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:11,402 INFO L168 Benchmark]: Boogie Preprocessor took 57.65 ms. Allocated memory is still 200.3 MB. Free memory was 176.0 MB in the beginning and 173.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:11,403 INFO L168 Benchmark]: RCFGBuilder took 601.75 ms. Allocated memory is still 200.3 MB. Free memory was 173.2 MB in the beginning and 136.7 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:11,404 INFO L168 Benchmark]: TraceAbstraction took 1050.45 ms. Allocated memory is still 200.3 MB. Free memory was 136.0 MB in the beginning and 84.0 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:11,407 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 135.3 MB. Free memory was 118.4 MB in the beginning and 118.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 464.04 ms. Allocated memory was 135.3 MB in the beginning and 200.3 MB in the end (delta: 65.0 MB). Free memory was 99.1 MB in the beginning and 176.0 MB in the end (delta: -76.9 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.65 ms. Allocated memory is still 200.3 MB. Free memory was 176.0 MB in the beginning and 173.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 601.75 ms. Allocated memory is still 200.3 MB. Free memory was 173.2 MB in the beginning and 136.7 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1050.45 ms. Allocated memory is still 200.3 MB. Free memory was 136.0 MB in the beginning and 84.0 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 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)=10, one_fmod=1, Zero_fmod={4:0}] [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={4:0}] [L161] __int32_t hx; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={4:0}] [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=0, one_fmod=1, x=3, Zero_fmod={4:0}] [L180] RET isfinite_double(x) VAL [isfinite_double(x)=-2147483648, one_fmod=1, x=3, Zero_fmod={4:0}] [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={4:0}] [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={4:0}] [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=19, ly=23, one_fmod=1, sx=14680, x=3, y=5, Zero_fmod={4:0}] [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=19, ly=23, one_fmod=1, sx=14680, x=3, y=5, Zero_fmod={4:0}] [L182] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=8, one_fmod=1, x=3, y=5, Zero_fmod={4:0}] [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={4:0}] [L186] __VERIFIER_error() VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={4:0}] - 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...