/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/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:10:20,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:10:20,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:10:20,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 01:10:20,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:10:20,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:10:20,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:10:20,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:10:20,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:10:20,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:10:20,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:10:20,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:10:20,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:10:20,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:10:20,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:10:20,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:10:20,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:10:20,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:10:20,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:10:20,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:10:20,971 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 01:10:20,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:10:20,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:10:20,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:10:20,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:10:20,988 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:10:20,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:10:20,988 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:10:20,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:10:20,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:10:20,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:10:20,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:10:20,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:10:20,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:10:20,990 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:10:20,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:10:20,990 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:10:20,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:10:20,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:10:20,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:10:20,991 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:10:20,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:10:20,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:10:20,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:10:20,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:10:20,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:10:20,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:10:20,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:10:20,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:10:20,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:10:20,993 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 01:10:21,332 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:10:21,354 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:10:21,357 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:10:21,359 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:10:21,360 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:10:21,361 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-20 01:10:21,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e184e849/ae87577d35064ea4974709c024b7fed3/FLAGd625d3e9a [2020-07-20 01:10:21,932 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:10:21,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-20 01:10:21,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e184e849/ae87577d35064ea4974709c024b7fed3/FLAGd625d3e9a [2020-07-20 01:10:22,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e184e849/ae87577d35064ea4974709c024b7fed3 [2020-07-20 01:10:22,286 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:10:22,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:10:22,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:10:22,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:10:22,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:10:22,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:10:22" (1/1) ... [2020-07-20 01:10:22,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4043da30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:22, skipping insertion in model container [2020-07-20 01:10:22,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:10:22" (1/1) ... [2020-07-20 01:10:22,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:10:22,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:10:22,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:10:22,598 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:10:22,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:10:22,771 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:10:22,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:22 WrapperNode [2020-07-20 01:10:22,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:10:22,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:10:22,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:10:22,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:10:22,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:22" (1/1) ... [2020-07-20 01:10:22,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:22" (1/1) ... [2020-07-20 01:10:22,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:22" (1/1) ... [2020-07-20 01:10:22,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:22" (1/1) ... [2020-07-20 01:10:22,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:22" (1/1) ... [2020-07-20 01:10:22,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:22" (1/1) ... [2020-07-20 01:10:22,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:22" (1/1) ... [2020-07-20 01:10:22,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:10:22,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:10:22,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:10:22,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:10:22,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:22" (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 01:10:22,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:10:22,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:10:22,906 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 01:10:22,906 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-20 01:10:22,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-20 01:10:22,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:10:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:10:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 01:10:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 01:10:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-20 01:10:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 01:10:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 01:10:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 01:10:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 01:10:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 01:10:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 01:10:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-20 01:10:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:10:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:10:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 01:10:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:10:23,484 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:10:23,484 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-20 01:10:23,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:10:23 BoogieIcfgContainer [2020-07-20 01:10:23,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:10:23,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:10:23,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:10:23,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:10:23,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:10:22" (1/3) ... [2020-07-20 01:10:23,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1f6d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:10:23, skipping insertion in model container [2020-07-20 01:10:23,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:22" (2/3) ... [2020-07-20 01:10:23,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1f6d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:10:23, skipping insertion in model container [2020-07-20 01:10:23,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:10:23" (3/3) ... [2020-07-20 01:10:23,498 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-07-20 01:10:23,510 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:10:23,518 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:10:23,533 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:10:23,559 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:10:23,559 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:10:23,560 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:10:23,560 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:10:23,560 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:10:23,560 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:10:23,561 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:10:23,561 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:10:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-20 01:10:23,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 01:10:23,590 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:10:23,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:10:23,592 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:10:23,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:10:23,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-07-20 01:10:23,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:10:23,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841840003] [2020-07-20 01:10:23,610 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@71a7f661 [2020-07-20 01:10:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:23,889 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 01:10:23,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841840003] [2020-07-20 01:10:23,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:10:23,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:10:23,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037711860] [2020-07-20 01:10:23,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:10:23,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:10:23,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:10:23,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:10:23,915 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-07-20 01:10:24,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:10:24,239 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-07-20 01:10:24,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 01:10:24,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-07-20 01:10:24,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:10:24,254 INFO L225 Difference]: With dead ends: 142 [2020-07-20 01:10:24,254 INFO L226 Difference]: Without dead ends: 69 [2020-07-20 01:10:24,258 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 [2020-07-20 01:10:24,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-20 01:10:24,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-07-20 01:10:24,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-20 01:10:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-07-20 01:10:24,335 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-07-20 01:10:24,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:10:24,335 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-07-20 01:10:24,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:10:24,336 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-07-20 01:10:24,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 01:10:24,337 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:10:24,337 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] [2020-07-20 01:10:24,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:10:24,338 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:10:24,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:10:24,339 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-07-20 01:10:24,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:10:24,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146575631] [2020-07-20 01:10:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@71a7f661 [2020-07-20 01:10:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:10:24,421 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:10:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:10:24,517 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:10:24,571 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 01:10:24,572 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 01:10:24,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:10:24,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:10:24 BoogieIcfgContainer [2020-07-20 01:10:24,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:10:24,624 INFO L168 Benchmark]: Toolchain (without parser) took 2334.73 ms. Allocated memory was 136.8 MB in the beginning and 231.7 MB in the end (delta: 94.9 MB). Free memory was 101.3 MB in the beginning and 186.4 MB in the end (delta: -85.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:24,625 INFO L168 Benchmark]: CDTParser took 0.21 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 01:10:24,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 481.39 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 177.2 MB in the end (delta: -76.4 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:24,627 INFO L168 Benchmark]: Boogie Preprocessor took 67.07 ms. Allocated memory is still 201.3 MB. Free memory was 177.2 MB in the beginning and 174.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:24,629 INFO L168 Benchmark]: RCFGBuilder took 649.15 ms. Allocated memory is still 201.3 MB. Free memory was 174.4 MB in the beginning and 137.0 MB in the end (delta: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:24,630 INFO L168 Benchmark]: TraceAbstraction took 1130.28 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 137.0 MB in the beginning and 186.4 MB in the end (delta: -49.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 01:10:24,638 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 481.39 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 177.2 MB in the end (delta: -76.4 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.07 ms. Allocated memory is still 201.3 MB. Free memory was 177.2 MB in the beginning and 174.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 649.15 ms. Allocated memory is still 201.3 MB. Free memory was 174.4 MB in the beginning and 137.0 MB in the end (delta: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1130.28 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 137.0 MB in the beginning and 186.4 MB in the end (delta: -49.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=8589934606, \old(Zero_fmod)=8589934596, \old(Zero_fmod)=8589934600, one_fmod=1, Zero_fmod={3:0}] [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 VAL [one_fmod=1, x=0, y=8589934601, Zero_fmod={3:0}] [L187] CALL, EXPR fmod_double(x, y) VAL [\old(x)=0, \old(y)=8589934601, one_fmod=1, Zero_fmod={3:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [\old(x)=0, \old(y)=8589934601, one_fmod=1, x=0, y=8589934601, Zero_fmod={3:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=8589934601, lx=8589934598, ly=8589934604, one_fmod=1, sx=-2, x=0, y=8589934601, Zero_fmod={3:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=8589934601, hx=2146435072, lx=8589934598, ly=8589934604, one_fmod=1, sx=-2, x=0, y=8589934601, Zero_fmod={3:0}] [L187] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=8589934595, one_fmod=1, x=0, y=8589934601, Zero_fmod={3:0}] [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, res=8589934595, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=8589934601, Zero_fmod={3:0}] [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() VAL [one_fmod=1, res=8589934595, x=0, y=8589934601, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 85 SDs, 0 SdLazy, 104 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=74occurred 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...