/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 12:59:31,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 12:59:31,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 12:59:31,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 12:59:31,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 12:59:31,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 12:59:31,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 12:59:31,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 12:59:31,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 12:59:31,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 12:59:31,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 12:59:31,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 12:59:31,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 12:59:31,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 12:59:31,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 12:59:31,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 12:59:31,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 12:59:31,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 12:59:31,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 12:59:31,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 12:59:31,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 12:59:31,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 12:59:31,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 12:59:31,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 12:59:31,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 12:59:31,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 12:59:31,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 12:59:31,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 12:59:31,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 12:59:31,479 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 12:59:31,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 12:59:31,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 12:59:31,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 12:59:31,482 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 12:59:31,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 12:59:31,482 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 12:59:31,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 12:59:31,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 12:59:31,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 12:59:31,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 12:59:31,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 12:59:31,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 12:59:31,485 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 12:59:31,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 12:59:31,485 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 12:59:31,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 12:59:31,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 12:59:31,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 12:59:31,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 12:59:31,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 12:59:31,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 12:59:31,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 12:59:31,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 12:59:31,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 12:59:31,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 12:59:31,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 12:59:31,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 12:59:31,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 12:59:31,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 12:59:31,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 12:59:31,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 12:59:31,982 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 12:59:31,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 12:59:31,984 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 12:59:31,986 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-04 12:59:32,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac1876d76/2c915de401804288b360a6846274010e/FLAGd61b6f5c2 [2020-09-04 12:59:32,625 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 12:59:32,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-04 12:59:32,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac1876d76/2c915de401804288b360a6846274010e/FLAGd61b6f5c2 [2020-09-04 12:59:32,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac1876d76/2c915de401804288b360a6846274010e [2020-09-04 12:59:32,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 12:59:32,957 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 12:59:32,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 12:59:32,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 12:59:32,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 12:59:32,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:32" (1/1) ... [2020-09-04 12:59:32,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7bff4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:32, skipping insertion in model container [2020-09-04 12:59:32,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:32" (1/1) ... [2020-09-04 12:59:32,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 12:59:33,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 12:59:33,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:59:33,276 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 12:59:33,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:59:33,435 INFO L208 MainTranslator]: Completed translation [2020-09-04 12:59:33,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33 WrapperNode [2020-09-04 12:59:33,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 12:59:33,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 12:59:33,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 12:59:33,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 12:59:33,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (1/1) ... [2020-09-04 12:59:33,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (1/1) ... [2020-09-04 12:59:33,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (1/1) ... [2020-09-04 12:59:33,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (1/1) ... [2020-09-04 12:59:33,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (1/1) ... [2020-09-04 12:59:33,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (1/1) ... [2020-09-04 12:59:33,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (1/1) ... [2020-09-04 12:59:33,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 12:59:33,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 12:59:33,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 12:59:33,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 12:59:33,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 12:59:33,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 12:59:33,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 12:59:33,569 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-04 12:59:33,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-04 12:59:33,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 12:59:33,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 12:59:33,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-04 12:59:33,569 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-04 12:59:33,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 12:59:33,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 12:59:33,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 12:59:33,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 12:59:33,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 12:59:33,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 12:59:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-04 12:59:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 12:59:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 12:59:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-04 12:59:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 12:59:34,043 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 12:59:34,044 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-04 12:59:34,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:59:34 BoogieIcfgContainer [2020-09-04 12:59:34,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 12:59:34,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 12:59:34,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 12:59:34,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 12:59:34,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 12:59:32" (1/3) ... [2020-09-04 12:59:34,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a7751b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:59:34, skipping insertion in model container [2020-09-04 12:59:34,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (2/3) ... [2020-09-04 12:59:34,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a7751b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:59:34, skipping insertion in model container [2020-09-04 12:59:34,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:59:34" (3/3) ... [2020-09-04 12:59:34,059 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-09-04 12:59:34,070 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 12:59:34,080 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 12:59:34,099 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 12:59:34,128 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 12:59:34,128 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 12:59:34,128 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 12:59:34,129 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 12:59:34,129 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 12:59:34,129 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 12:59:34,129 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 12:59:34,129 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 12:59:34,151 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-09-04 12:59:34,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 12:59:34,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:34,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:59:34,160 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:34,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:34,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-09-04 12:59:34,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:34,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895631023] [2020-09-04 12:59:34,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:34,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:59:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:34,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 12:59:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:59:34,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895631023] [2020-09-04 12:59:34,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:59:34,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 12:59:34,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353757640] [2020-09-04 12:59:34,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 12:59:34,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:59:34,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 12:59:34,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 12:59:34,492 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-09-04 12:59:34,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:59:34,742 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-09-04 12:59:34,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 12:59:34,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-04 12:59:34,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:59:34,758 INFO L225 Difference]: With dead ends: 116 [2020-09-04 12:59:34,758 INFO L226 Difference]: Without dead ends: 56 [2020-09-04 12:59:34,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 12:59:34,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-04 12:59:34,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-04 12:59:34,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-04 12:59:34,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-09-04 12:59:34,817 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-09-04 12:59:34,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:59:34,818 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-09-04 12:59:34,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 12:59:34,818 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-09-04 12:59:34,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 12:59:34,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:34,820 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] [2020-09-04 12:59:34,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 12:59:34,820 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:34,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:34,821 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-09-04 12:59:34,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:34,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576446557] [2020-09-04 12:59:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 12:59:34,891 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 12:59:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 12:59:34,949 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 12:59:34,986 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 12:59:34,987 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 12:59:34,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 12:59:35,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 12:59:35 BoogieIcfgContainer [2020-09-04 12:59:35,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 12:59:35,032 INFO L168 Benchmark]: Toolchain (without parser) took 2073.38 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.5 MB in the beginning and 93.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 72.6 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:35,033 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-04 12:59:35,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.92 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 181.0 MB in the end (delta: -78.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:35,035 INFO L168 Benchmark]: Boogie Preprocessor took 60.67 ms. Allocated memory is still 203.4 MB. Free memory was 181.0 MB in the beginning and 179.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:35,036 INFO L168 Benchmark]: RCFGBuilder took 552.21 ms. Allocated memory is still 203.4 MB. Free memory was 179.0 MB in the beginning and 150.1 MB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:35,037 INFO L168 Benchmark]: TraceAbstraction took 977.53 ms. Allocated memory is still 203.4 MB. Free memory was 150.1 MB in the beginning and 93.3 MB in the end (delta: 56.8 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:35,041 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 477.92 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 181.0 MB in the end (delta: -78.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.67 ms. Allocated memory is still 203.4 MB. Free memory was 181.0 MB in the beginning and 179.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 552.21 ms. Allocated memory is still 203.4 MB. Free memory was 179.0 MB in the beginning and 150.1 MB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 977.53 ms. Allocated memory is still 203.4 MB. Free memory was 150.1 MB in the beginning and 93.3 MB in the end (delta: 56.8 MB). Peak memory consumption was 56.8 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 bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=4294967306, \old(Zero_fmod)=4294967304, \old(Zero_fmod)=4294967298, one_fmod=1, Zero_fmod={3:0}] [L126] float x = 0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=4294967299, Zero_fmod={3:0}] [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=4294967299, one_fmod=1, Zero_fmod={3:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=4294967299, one_fmod=1, x=0, y=4294967299, 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)=0, \old(y)=4294967299, one_fmod=1, sx=-1, x=0, y=4294967299, Zero_fmod={3:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=4294967299, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=0, y=4294967299, Zero_fmod={3:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=4294967301, one_fmod=1, x=0, y=4294967299, Zero_fmod={3:0}] [L131] float res = fmod_float(x, y); [L134] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, res=4294967301, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4294967299, Zero_fmod={3:0}] [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L135] __VERIFIER_error() VAL [one_fmod=1, res=4294967301, x=0, y=4294967299, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 14 SDslu, 61 SDs, 0 SdLazy, 80 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...