/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:54:07,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:54:07,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:54:07,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:54:07,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:54:07,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:54:07,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:54:07,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:54:07,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:54:07,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:54:07,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:54:07,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:54:07,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:54:07,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:54:07,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:54:07,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:54:07,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:54:07,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:54:07,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:54:07,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:54:07,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:54:07,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:54:07,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:54:07,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:54:07,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:54:07,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:54:07,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:54:07,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:54:07,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:54:07,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 18:54:07,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:54:07,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:54:07,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:54:07,375 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 [2020-08-21 18:54:07,401 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:54:07,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:54:07,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:54:07,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:54:07,403 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:54:07,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:54:07,404 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:54:07,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:54:07,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:54:07,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:54:07,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:54:07,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:54:07,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:54:07,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:54:07,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:54:07,409 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:54:07,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:54:07,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:54:07,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:54:07,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:54:07,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:54:07,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:54:07,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:54:07,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:54:07,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:54:07,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:54:07,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:54:07,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:54:07,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:54:07,415 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:54:07,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:54:07,728 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:54:07,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:54:07,733 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:54:07,734 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:54:07,735 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-21 18:54:07,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2733a0f32/a16b6786e89646958d4c42a35c8cb349/FLAG675e607fe [2020-08-21 18:54:08,224 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:54:08,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-21 18:54:08,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2733a0f32/a16b6786e89646958d4c42a35c8cb349/FLAG675e607fe [2020-08-21 18:54:08,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2733a0f32/a16b6786e89646958d4c42a35c8cb349 [2020-08-21 18:54:08,634 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:54:08,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:54:08,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:54:08,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:54:08,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:54:08,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5ae353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08, skipping insertion in model container [2020-08-21 18:54:08,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:54:08,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:54:08,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:54:09,004 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:54:09,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:54:09,189 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:54:09,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:09 WrapperNode [2020-08-21 18:54:09,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:54:09,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:54:09,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:54:09,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:54:09,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:09" (1/1) ... [2020-08-21 18:54:09,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:09" (1/1) ... [2020-08-21 18:54:09,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:09" (1/1) ... [2020-08-21 18:54:09,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:09" (1/1) ... [2020-08-21 18:54:09,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:09" (1/1) ... [2020-08-21 18:54:09,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:09" (1/1) ... [2020-08-21 18:54:09,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:09" (1/1) ... [2020-08-21 18:54:09,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:54:09,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:54:09,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:54:09,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:54:09,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:09" (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 [2020-08-21 18:54:09,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:54:09,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:54:09,329 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-21 18:54:09,329 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-21 18:54:09,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:54:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:54:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-21 18:54:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-21 18:54:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:54:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 18:54:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:54:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:54:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 18:54:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:54:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-21 18:54:09,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:54:09,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:54:09,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-21 18:54:09,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:54:09,986 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:54:09,986 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-21 18:54:09,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:54:09 BoogieIcfgContainer [2020-08-21 18:54:09,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:54:09,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:54:09,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:54:09,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:54:09,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:54:08" (1/3) ... [2020-08-21 18:54:09,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738d3e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:54:09, skipping insertion in model container [2020-08-21 18:54:09,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:09" (2/3) ... [2020-08-21 18:54:09,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738d3e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:54:09, skipping insertion in model container [2020-08-21 18:54:09,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:54:09" (3/3) ... [2020-08-21 18:54:10,001 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-08-21 18:54:10,012 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:54:10,021 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:54:10,036 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:54:10,062 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:54:10,063 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:54:10,063 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:54:10,063 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:54:10,063 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:54:10,064 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:54:10,064 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:54:10,064 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:54:10,086 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-21 18:54:10,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 18:54:10,094 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:10,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:54:10,096 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:10,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:10,103 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-08-21 18:54:10,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:10,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491273569] [2020-08-21 18:54:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:10,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:54:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:10,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:54:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:10,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:54:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:54:10,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491273569] [2020-08-21 18:54:10,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:54:10,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:54:10,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764533851] [2020-08-21 18:54:10,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:54:10,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:54:10,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:54:10,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:54:10,435 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-21 18:54:10,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:54:10,757 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-21 18:54:10,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:54:10,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-21 18:54:10,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:54:10,770 INFO L225 Difference]: With dead ends: 138 [2020-08-21 18:54:10,771 INFO L226 Difference]: Without dead ends: 68 [2020-08-21 18:54:10,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:54:10,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-21 18:54:10,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-21 18:54:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-21 18:54:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-21 18:54:10,824 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-21 18:54:10,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:54:10,825 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-21 18:54:10,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:54:10,825 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-21 18:54:10,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 18:54:10,827 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:10,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:54:10,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:54:10,828 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:10,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:10,828 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-08-21 18:54:10,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:10,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229155296] [2020-08-21 18:54:10,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:54:10,925 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:54:10,925 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:54:10,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:54:10,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:54:10 BoogieIcfgContainer [2020-08-21 18:54:10,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:54:10,952 INFO L168 Benchmark]: Toolchain (without parser) took 2315.45 ms. Allocated memory was 139.5 MB in the beginning and 235.4 MB in the end (delta: 95.9 MB). Free memory was 100.5 MB in the beginning and 192.8 MB in the end (delta: -92.3 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:10,953 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 18:54:10,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.32 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.3 MB in the beginning and 177.2 MB in the end (delta: -77.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:10,955 INFO L168 Benchmark]: Boogie Preprocessor took 61.06 ms. Allocated memory is still 202.4 MB. Free memory was 177.2 MB in the beginning and 174.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:10,956 INFO L168 Benchmark]: RCFGBuilder took 740.05 ms. Allocated memory is still 202.4 MB. Free memory was 174.6 MB in the beginning and 138.9 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:10,957 INFO L168 Benchmark]: TraceAbstraction took 955.91 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 138.2 MB in the beginning and 192.8 MB in the end (delta: -54.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 18:54:10,960 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 553.32 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.3 MB in the beginning and 177.2 MB in the end (delta: -77.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.06 ms. Allocated memory is still 202.4 MB. Free memory was 177.2 MB in the beginning and 174.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 740.05 ms. Allocated memory is still 202.4 MB. Free memory was 174.6 MB in the beginning and 138.9 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 955.91 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 138.2 MB in the beginning and 192.8 MB in the end (delta: -54.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...