/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 BIGGEST_EQUIVALENCE_CLASS --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/double_req_bl_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 05:28:23,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 05:28:23,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 05:28:23,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 05:28:23,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 05:28:23,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 05:28:23,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 05:28:23,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 05:28:23,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 05:28:23,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 05:28:23,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 05:28:23,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 05:28:23,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 05:28:23,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 05:28:23,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 05:28:23,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 05:28:23,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 05:28:23,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 05:28:23,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 05:28:23,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 05:28:23,640 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 05:28:23,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 05:28:23,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 05:28:23,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 05:28:23,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 05:28:23,657 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 05:28:23,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 05:28:23,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 05:28:23,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 05:28:23,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 05:28:23,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 05:28:23,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 05:28:23,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 05:28:23,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 05:28:23,659 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 05:28:23,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 05:28:23,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 05:28:23,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 05:28:23,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 05:28:23,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 05:28:23,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 05:28:23,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 05:28:23,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 05:28:23,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 05:28:23,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 05:28:23,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 05:28:23,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 05:28:23,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 05:28:23,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 05:28:23,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 05:28:23,662 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS 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 05:28:23,987 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 05:28:24,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 05:28:24,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 05:28:24,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 05:28:24,006 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 05:28:24,007 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-07-20 05:28:24,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8cb2a08b/539208e58c9a42039d2ac6c560db61cf/FLAG208e071f8 [2020-07-20 05:28:24,597 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 05:28:24,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-07-20 05:28:24,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8cb2a08b/539208e58c9a42039d2ac6c560db61cf/FLAG208e071f8 [2020-07-20 05:28:24,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8cb2a08b/539208e58c9a42039d2ac6c560db61cf [2020-07-20 05:28:24,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 05:28:24,931 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 05:28:24,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 05:28:24,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 05:28:24,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 05:28:24,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:28:24" (1/1) ... [2020-07-20 05:28:24,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc77cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:24, skipping insertion in model container [2020-07-20 05:28:24,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:28:24" (1/1) ... [2020-07-20 05:28:24,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 05:28:24,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 05:28:25,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:28:25,193 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 05:28:25,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:28:25,360 INFO L208 MainTranslator]: Completed translation [2020-07-20 05:28:25,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:25 WrapperNode [2020-07-20 05:28:25,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 05:28:25,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 05:28:25,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 05:28:25,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 05:28:25,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:25" (1/1) ... [2020-07-20 05:28:25,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:25" (1/1) ... [2020-07-20 05:28:25,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:25" (1/1) ... [2020-07-20 05:28:25,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:25" (1/1) ... [2020-07-20 05:28:25,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:25" (1/1) ... [2020-07-20 05:28:25,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:25" (1/1) ... [2020-07-20 05:28:25,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:25" (1/1) ... [2020-07-20 05:28:25,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 05:28:25,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 05:28:25,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 05:28:25,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 05:28:25,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:25" (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 05:28:25,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 05:28:25,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 05:28:25,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 05:28:25,495 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2020-07-20 05:28:25,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 05:28:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 05:28:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 05:28:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2020-07-20 05:28:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 05:28:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 05:28:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 05:28:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 05:28:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 05:28:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 05:28:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 05:28:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 05:28:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 05:28:26,054 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 05:28:26,054 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-07-20 05:28:26,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:28:26 BoogieIcfgContainer [2020-07-20 05:28:26,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 05:28:26,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 05:28:26,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 05:28:26,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 05:28:26,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:28:24" (1/3) ... [2020-07-20 05:28:26,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d858b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:28:26, skipping insertion in model container [2020-07-20 05:28:26,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:25" (2/3) ... [2020-07-20 05:28:26,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d858b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:28:26, skipping insertion in model container [2020-07-20 05:28:26,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:28:26" (3/3) ... [2020-07-20 05:28:26,067 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-07-20 05:28:26,078 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 05:28:26,086 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 05:28:26,100 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 05:28:26,124 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 05:28:26,124 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 05:28:26,124 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 05:28:26,125 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 05:28:26,125 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 05:28:26,125 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 05:28:26,125 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 05:28:26,126 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 05:28:26,147 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-07-20 05:28:26,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 05:28:26,154 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:28:26,155 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 05:28:26,156 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:28:26,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:28:26,163 INFO L82 PathProgramCache]: Analyzing trace with hash 204549601, now seen corresponding path program 1 times [2020-07-20 05:28:26,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:28:26,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202604207] [2020-07-20 05:28:26,173 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@544f1add [2020-07-20 05:28:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:26,422 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 05:28:26,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202604207] [2020-07-20 05:28:26,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:28:26,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 05:28:26,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796020348] [2020-07-20 05:28:26,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 05:28:26,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:28:26,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 05:28:26,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 05:28:26,465 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-07-20 05:28:26,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:28:26,815 INFO L93 Difference]: Finished difference Result 108 states and 162 transitions. [2020-07-20 05:28:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 05:28:26,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-20 05:28:26,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:28:26,832 INFO L225 Difference]: With dead ends: 108 [2020-07-20 05:28:26,833 INFO L226 Difference]: Without dead ends: 54 [2020-07-20 05:28:26,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 05:28:26,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-07-20 05:28:26,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-07-20 05:28:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-20 05:28:26,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-07-20 05:28:26,893 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 25 [2020-07-20 05:28:26,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:28:26,894 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-07-20 05:28:26,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 05:28:26,894 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-07-20 05:28:26,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 05:28:26,897 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:28:26,897 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] [2020-07-20 05:28:26,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 05:28:26,898 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:28:26,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:28:26,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1987482264, now seen corresponding path program 1 times [2020-07-20 05:28:26,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:28:26,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272976598] [2020-07-20 05:28:26,900 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@544f1add [2020-07-20 05:28:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:27,117 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 05:28:27,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272976598] [2020-07-20 05:28:27,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:28:27,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 05:28:27,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218073186] [2020-07-20 05:28:27,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 05:28:27,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:28:27,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 05:28:27,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 05:28:27,127 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 5 states. [2020-07-20 05:28:27,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:28:27,389 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-07-20 05:28:27,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 05:28:27,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-20 05:28:27,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:28:27,393 INFO L225 Difference]: With dead ends: 57 [2020-07-20 05:28:27,394 INFO L226 Difference]: Without dead ends: 54 [2020-07-20 05:28:27,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 05:28:27,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-07-20 05:28:27,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-07-20 05:28:27,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-20 05:28:27,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-07-20 05:28:27,417 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 27 [2020-07-20 05:28:27,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:28:27,420 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-07-20 05:28:27,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 05:28:27,421 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-07-20 05:28:27,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-20 05:28:27,426 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:28:27,426 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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 05:28:27,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 05:28:27,428 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:28:27,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:28:27,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1590755806, now seen corresponding path program 1 times [2020-07-20 05:28:27,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:28:27,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550347806] [2020-07-20 05:28:27,429 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@544f1add [2020-07-20 05:28:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 05:28:27,524 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 05:28:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 05:28:27,578 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 05:28:27,613 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 05:28:27,614 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 05:28:27,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 05:28:27,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:28:27 BoogieIcfgContainer [2020-07-20 05:28:27,655 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 05:28:27,658 INFO L168 Benchmark]: Toolchain (without parser) took 2728.16 ms. Allocated memory was 136.8 MB in the beginning and 231.7 MB in the end (delta: 94.9 MB). Free memory was 101.6 MB in the beginning and 161.0 MB in the end (delta: -59.3 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:27,659 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 05:28:27,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.28 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 101.2 MB in the beginning and 178.6 MB in the end (delta: -77.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:27,661 INFO L168 Benchmark]: Boogie Preprocessor took 73.59 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 175.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:27,665 INFO L168 Benchmark]: RCFGBuilder took 623.44 ms. Allocated memory is still 201.3 MB. Free memory was 175.8 MB in the beginning and 143.6 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:27,666 INFO L168 Benchmark]: TraceAbstraction took 1595.14 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 143.6 MB in the beginning and 161.0 MB in the end (delta: -17.3 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:27,670 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 429.28 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 101.2 MB in the beginning and 178.6 MB in the end (delta: -77.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.59 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 175.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 623.44 ms. Allocated memory is still 201.3 MB. Free memory was 175.8 MB in the beginning and 143.6 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1595.14 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 143.6 MB in the beginning and 161.0 MB in the end (delta: -17.3 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 122]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 116, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L17] static const double one_modf = 1.0; VAL [\old(one_modf)=8589934600, one_modf=1] [L116] double x = 0.0 / 0.0; [L117] double iptr; VAL [iptr={3:0}, one_modf=1] [L118] CALL, EXPR modf_double(x, &iptr) VAL [\old(x)=8589934602, iptr={3:0}, one_modf=1] [L20] __int32_t i0, i1, j0; [L21] __uint32_t i; VAL [\old(x)=8589934602, iptr={3:0}, iptr={3:0}, one_modf=1, x=8589934602] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=8589934602, i0=0, i1=0, iptr={3:0}, iptr={3:0}, one_modf=1, x=8589934602] [L29] COND TRUE j0 < 20 VAL [\old(x)=8589934602, i0=0, i1=0, iptr={3:0}, iptr={3:0}, j0=-1, one_modf=1, x=8589934602] [L30] COND TRUE j0 < 0 VAL [\old(x)=8589934602, i0=0, i1=0, iptr={3:0}, iptr={3:0}, j0=-1, one_modf=1, x=8589934602] [L32] ieee_double_shape_type iw_u; [L33] iw_u.parts.msw = (i0 & 0x80000000) [L34] iw_u.parts.lsw = (0) [L35] EXPR iw_u.value [L35] (*iptr) = iw_u.value [L37] return x; VAL [\old(x)=8589934602, \result=8589934602, i0=0, i1=0, iptr={3:0}, iptr={3:0}, j0=-1, one_modf=1, x=8589934602] [L118] RET, EXPR modf_double(x, &iptr) VAL [iptr={3:0}, modf_double(x, &iptr)=8589934602, one_modf=1, x=8589934602] [L118] double res = modf_double(x, &iptr); [L121] EXPR \read(iptr) VAL [\read(iptr)=8589934593, iptr={3:0}, one_modf=1, res=8589934602, x=8589934602] [L121] CALL, EXPR isnan_double(iptr) VAL [\old(x)=8589934593, one_modf=1] [L15] return x != x; VAL [\old(x)=8589934593, \result=1, one_modf=1, x=8589934593] [L121] RET, EXPR isnan_double(iptr) VAL [\read(iptr)=8589934593, iptr={3:0}, isnan_double(iptr)=1, one_modf=1, res=8589934602, x=8589934602] [L121] isnan_double(iptr) && !isnan_double(res) VAL [\read(iptr)=8589934593, iptr={3:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, one_modf=1, res=8589934602, x=8589934602] [L121] CALL, EXPR isnan_double(res) VAL [\old(x)=8589934602, one_modf=1] [L15] return x != x; VAL [\old(x)=8589934602, \result=0, one_modf=1, x=8589934602] [L121] RET, EXPR isnan_double(res) VAL [\read(iptr)=8589934593, iptr={3:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, isnan_double(res)=0, one_modf=1, res=8589934602, x=8589934602] [L121] isnan_double(iptr) && !isnan_double(res) VAL [\read(iptr)=8589934593, iptr={3:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, isnan_double(res)=0, one_modf=1, res=8589934602, x=8589934602] [L121] COND TRUE isnan_double(iptr) && !isnan_double(res) [L122] __VERIFIER_error() VAL [iptr={3:0}, one_modf=1, res=8589934602, x=8589934602] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 68 SDslu, 35 SDs, 0 SdLazy, 188 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 2478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...