/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:10:44,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:10:44,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:10:44,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 01:10:44,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:10:44,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:10:44,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:10:44,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:10:44,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:10:44,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:10:44,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:10:44,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:10:44,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:10:44,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:10:44,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:10:44,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:10:44,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:10:44,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:10:44,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:10:44,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:10:44,628 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 01:10:44,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:10:44,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:10:44,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:10:44,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:10:44,671 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:10:44,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:10:44,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:10:44,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:10:44,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:10:44,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:10:44,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:10:44,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:10:44,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:10:44,673 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:10:44,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:10:44,673 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:10:44,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:10:44,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:10:44,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:10:44,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:10:44,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:10:44,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:10:44,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:10:44,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:10:44,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:10:44,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:10:44,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:10:44,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:10:44,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:10:44,676 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 01:10:44,982 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:10:45,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:10:45,005 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:10:45,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:10:45,007 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:10:45,009 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-20 01:10:45,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/860edacdf/38189040d5974a1797ffbf487ef20fa1/FLAG8340ceeb8 [2020-07-20 01:10:45,620 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:10:45,621 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-20 01:10:45,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/860edacdf/38189040d5974a1797ffbf487ef20fa1/FLAG8340ceeb8 [2020-07-20 01:10:45,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/860edacdf/38189040d5974a1797ffbf487ef20fa1 [2020-07-20 01:10:45,945 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:10:45,947 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:10:45,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:10:45,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:10:45,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:10:45,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:10:45" (1/1) ... [2020-07-20 01:10:45,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@135aeb4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:45, skipping insertion in model container [2020-07-20 01:10:45,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:10:45" (1/1) ... [2020-07-20 01:10:45,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:10:45,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:10:46,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:10:46,249 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:10:46,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:10:46,394 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:10:46,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:46 WrapperNode [2020-07-20 01:10:46,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:10:46,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:10:46,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:10:46,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:10:46,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:46" (1/1) ... [2020-07-20 01:10:46,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:46" (1/1) ... [2020-07-20 01:10:46,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:46" (1/1) ... [2020-07-20 01:10:46,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:46" (1/1) ... [2020-07-20 01:10:46,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:46" (1/1) ... [2020-07-20 01:10:46,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:46" (1/1) ... [2020-07-20 01:10:46,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:46" (1/1) ... [2020-07-20 01:10:46,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:10:46,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:10:46,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:10:46,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:10:46,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:46" (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 01:10:46,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:10:46,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:10:46,512 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-20 01:10:46,513 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-07-20 01:10:46,513 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:10:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:10:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-20 01:10:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-20 01:10:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 01:10:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 01:10:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 01:10:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 01:10:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 01:10:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 01:10:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-07-20 01:10:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:10:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:10:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 01:10:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:10:46,966 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:10:46,966 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-20 01:10:46,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:10:46 BoogieIcfgContainer [2020-07-20 01:10:46,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:10:46,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:10:46,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:10:46,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:10:46,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:10:45" (1/3) ... [2020-07-20 01:10:46,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2031a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:10:46, skipping insertion in model container [2020-07-20 01:10:46,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:46" (2/3) ... [2020-07-20 01:10:46,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2031a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:10:46, skipping insertion in model container [2020-07-20 01:10:46,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:10:46" (3/3) ... [2020-07-20 01:10:46,978 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-07-20 01:10:46,987 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:10:46,996 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:10:47,009 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:10:47,055 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:10:47,055 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:10:47,055 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:10:47,056 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:10:47,056 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:10:47,056 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:10:47,056 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:10:47,057 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:10:47,085 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-07-20 01:10:47,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 01:10:47,094 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:10:47,096 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 01:10:47,097 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:10:47,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:10:47,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-07-20 01:10:47,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:10:47,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390759054] [2020-07-20 01:10:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@659afdf0 [2020-07-20 01:10:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:47,417 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 01:10:47,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390759054] [2020-07-20 01:10:47,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:10:47,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:10:47,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828750200] [2020-07-20 01:10:47,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:10:47,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:10:47,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:10:47,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:10:47,446 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-07-20 01:10:47,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:10:47,772 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-07-20 01:10:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 01:10:47,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-20 01:10:47,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:10:47,786 INFO L225 Difference]: With dead ends: 112 [2020-07-20 01:10:47,786 INFO L226 Difference]: Without dead ends: 55 [2020-07-20 01:10:47,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:10:47,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-20 01:10:47,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-07-20 01:10:47,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-20 01:10:47,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-07-20 01:10:47,841 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-07-20 01:10:47,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:10:47,843 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-07-20 01:10:47,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:10:47,843 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-07-20 01:10:47,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 01:10:47,844 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:10:47,845 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 01:10:47,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:10:47,845 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:10:47,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:10:47,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-07-20 01:10:47,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:10:47,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263623053] [2020-07-20 01:10:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@659afdf0 [2020-07-20 01:10:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:10:48,043 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:10:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:10:48,200 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:10:48,234 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 01:10:48,235 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 01:10:48,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:10:48,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:10:48 BoogieIcfgContainer [2020-07-20 01:10:48,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:10:48,278 INFO L168 Benchmark]: Toolchain (without parser) took 2330.06 ms. Allocated memory was 138.4 MB in the beginning and 235.9 MB in the end (delta: 97.5 MB). Free memory was 101.3 MB in the beginning and 198.4 MB in the end (delta: -97.2 MB). Peak memory consumption was 85.2 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:48,279 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 01:10:48,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.10 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 179.3 MB in the end (delta: -78.4 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:48,281 INFO L168 Benchmark]: Boogie Preprocessor took 56.44 ms. Allocated memory is still 202.4 MB. Free memory was 179.3 MB in the beginning and 176.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:48,282 INFO L168 Benchmark]: RCFGBuilder took 519.06 ms. Allocated memory is still 202.4 MB. Free memory was 176.7 MB in the beginning and 148.6 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:48,283 INFO L168 Benchmark]: TraceAbstraction took 1303.43 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 148.0 MB in the beginning and 198.4 MB in the end (delta: -50.4 MB). Peak memory consumption was 67.9 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:48,287 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 446.10 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 179.3 MB in the end (delta: -78.4 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.44 ms. Allocated memory is still 202.4 MB. Free memory was 179.3 MB in the beginning and 176.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 519.06 ms. Allocated memory is still 202.4 MB. Free memory was 176.7 MB in the beginning and 148.6 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1303.43 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 148.0 MB in the beginning and 198.4 MB in the end (delta: -50.4 MB). Peak memory consumption was 67.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=12884901901, \old(Zero_fmod)=12884901894, \old(Zero_fmod)=12884901897, one_fmod=1, Zero_fmod={3:0}] [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=12884901891, Zero_fmod={3:0}] [L129] CALL isfinite_float(x) VAL [\old(x)=12884901891, one_fmod=1, Zero_fmod={3:0}] [L109] __int32_t ix; VAL [\old(x)=12884901891, one_fmod=1, x=12884901891, Zero_fmod={3:0}] [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); VAL [\old(x)=12884901891, \result=1, ix=2139095039, one_fmod=1, x=12884901891, Zero_fmod={3:0}] [L129] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=12884901891, Zero_fmod={3:0}] [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=12884901891, \old(y)=12884901890, one_fmod=1, Zero_fmod={3:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=12884901891, \old(y)=12884901890, one_fmod=1, x=12884901891, y=12884901890, Zero_fmod={3:0}] [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff VAL [\old(x)=12884901891, \old(y)=12884901890, one_fmod=1, sx=-2, x=12884901891, y=12884901890, Zero_fmod={3:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=12884901891, \old(y)=12884901890, hx=2139095040, hy=0, one_fmod=1, sx=-2, x=12884901891, y=12884901890, Zero_fmod={3:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=12884901889, one_fmod=1, x=12884901891, y=12884901890, Zero_fmod={3:0}] [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x VAL [one_fmod=1, res=12884901889, x=12884901891, y=12884901890, Zero_fmod={3:0}] [L135] __VERIFIER_error() VAL [one_fmod=1, res=12884901889, x=12884901891, y=12884901890, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 6 SDslu, 63 SDs, 0 SdLazy, 78 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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...