/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:54:11,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:54:11,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:54:11,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:54:11,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:54:11,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:54:11,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:54:11,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:54:11,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:54:11,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:54:11,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:54:11,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:54:11,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:54:11,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:54:11,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:54:11,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:54:11,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:54:11,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:54:11,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:54:11,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:54:11,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:54:11,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:54:11,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:54:11,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:54:11,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:54:11,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:54:11,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:54:11,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:54:11,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:54:11,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 14:54:11,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:54:11,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:54:11,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:54:11,981 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 [2020-09-24 14:54:12,029 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:54:12,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:54:12,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:54:12,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:54:12,032 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:54:12,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:54:12,033 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:54:12,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:54:12,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:54:12,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:54:12,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:54:12,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:54:12,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:54:12,035 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:54:12,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:54:12,036 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:54:12,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:54:12,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:54:12,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:54:12,036 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:54:12,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:54:12,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:54:12,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:54:12,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:54:12,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:54:12,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:54:12,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:54:12,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:54:12,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:54:12,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:54:12,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:54:12,579 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:54:12,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:54:12,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:54:12,587 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:54:12,588 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-09-24 14:54:12,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/763832f65/aae9989d1ff642c08685087253fd1073/FLAGa6e5fe511 [2020-09-24 14:54:13,274 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:54:13,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-09-24 14:54:13,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/763832f65/aae9989d1ff642c08685087253fd1073/FLAGa6e5fe511 [2020-09-24 14:54:13,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/763832f65/aae9989d1ff642c08685087253fd1073 [2020-09-24 14:54:13,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:54:13,594 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:54:13,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:13,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:54:13,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:54:13,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:13,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc17a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:13, skipping insertion in model container [2020-09-24 14:54:13,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:13" (1/1) ... [2020-09-24 14:54:13,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:54:13,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:54:13,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:14,059 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:54:14,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:14,135 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:54:14,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:14 WrapperNode [2020-09-24 14:54:14,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:14,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:54:14,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:54:14,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:54:14,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:14" (1/1) ... [2020-09-24 14:54:14,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:14" (1/1) ... [2020-09-24 14:54:14,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:14" (1/1) ... [2020-09-24 14:54:14,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:14" (1/1) ... [2020-09-24 14:54:14,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:14" (1/1) ... [2020-09-24 14:54:14,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:14" (1/1) ... [2020-09-24 14:54:14,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:14" (1/1) ... [2020-09-24 14:54:14,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:54:14,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:54:14,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:54:14,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:54:14,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:14" (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 [2020-09-24 14:54:14,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:54:14,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:54:14,275 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-24 14:54:14,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-09-24 14:54:14,275 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:54:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:54:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-24 14:54:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-24 14:54:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:54:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 14:54:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:54:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:54:14,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 14:54:14,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:54:14,279 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-09-24 14:54:14,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:54:14,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:54:14,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-24 14:54:14,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:54:14,863 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:54:14,864 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-24 14:54:14,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:14 BoogieIcfgContainer [2020-09-24 14:54:14,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:54:14,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:54:14,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:54:14,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:54:14,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:54:13" (1/3) ... [2020-09-24 14:54:14,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152b25a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:14, skipping insertion in model container [2020-09-24 14:54:14,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:14" (2/3) ... [2020-09-24 14:54:14,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152b25a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:14, skipping insertion in model container [2020-09-24 14:54:14,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:14" (3/3) ... [2020-09-24 14:54:14,881 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-09-24 14:54:14,893 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:54:14,905 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:54:14,929 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:54:14,963 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:54:14,964 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:54:14,964 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:54:14,964 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:54:14,964 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:54:14,964 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:54:14,965 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:54:14,965 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:54:14,993 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-09-24 14:54:15,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 14:54:15,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:15,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:54:15,006 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:15,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:15,015 INFO L82 PathProgramCache]: Analyzing trace with hash -309473205, now seen corresponding path program 1 times [2020-09-24 14:54:15,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:15,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813191222] [2020-09-24 14:54:15,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:15,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:54:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:15,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 14:54:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:15,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:54:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:15,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:54:15,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813191222] [2020-09-24 14:54:15,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:54:15,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:54:15,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047734692] [2020-09-24 14:54:15,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:54:15,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:54:15,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:54:15,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:54:15,391 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 4 states. [2020-09-24 14:54:15,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:54:15,852 INFO L93 Difference]: Finished difference Result 306 states and 369 transitions. [2020-09-24 14:54:15,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:54:15,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-09-24 14:54:15,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:54:15,870 INFO L225 Difference]: With dead ends: 306 [2020-09-24 14:54:15,870 INFO L226 Difference]: Without dead ends: 155 [2020-09-24 14:54:15,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:54:15,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-24 14:54:15,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-09-24 14:54:15,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 14:54:15,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 170 transitions. [2020-09-24 14:54:15,939 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 170 transitions. Word has length 49 [2020-09-24 14:54:15,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:54:15,941 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 170 transitions. [2020-09-24 14:54:15,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:54:15,941 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 170 transitions. [2020-09-24 14:54:15,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 14:54:15,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:15,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:54:15,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:54:15,945 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:15,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:15,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1032631156, now seen corresponding path program 1 times [2020-09-24 14:54:15,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:15,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067798518] [2020-09-24 14:54:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:54:16,082 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:54:16,083 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:54:16,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:54:16,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:54:16 BoogieIcfgContainer [2020-09-24 14:54:16,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:54:16,115 INFO L168 Benchmark]: Toolchain (without parser) took 2524.47 ms. Allocated memory was 140.5 MB in the beginning and 235.4 MB in the end (delta: 94.9 MB). Free memory was 103.1 MB in the beginning and 172.6 MB in the end (delta: -69.4 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:16,116 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 14:54:16,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 538.71 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 179.7 MB in the end (delta: -77.3 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:16,118 INFO L168 Benchmark]: Boogie Preprocessor took 62.78 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 176.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:16,119 INFO L168 Benchmark]: RCFGBuilder took 670.96 ms. Allocated memory is still 203.4 MB. Free memory was 176.9 MB in the beginning and 141.0 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:16,120 INFO L168 Benchmark]: TraceAbstraction took 1239.90 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 140.3 MB in the beginning and 172.6 MB in the end (delta: -32.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 14:54:16,124 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 538.71 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 179.7 MB in the end (delta: -77.3 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.78 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 176.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 670.96 ms. Allocated memory is still 203.4 MB. Free memory was 176.9 MB in the beginning and 141.0 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1239.90 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 140.3 MB in the beginning and 172.6 MB in the end (delta: -32.2 MB). There was no memory consumed. 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 32, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; [L129] CALL isfinite_float(x) [L109] __int32_t ix; [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); [L129] RET isfinite_float(x) [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [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 [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 162 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 174 SDtfs, 31 SDslu, 128 SDs, 0 SdLazy, 190 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred 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, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 4464 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...