/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:31:45,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:31:45,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:31:45,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:31:45,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:31:45,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:31:45,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:31:45,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:31:45,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:31:45,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:31:45,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:31:45,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:31:45,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:31:45,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:31:45,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:31:45,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:31:45,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:31:45,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:31:45,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:31:45,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:31:45,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:31:45,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:31:45,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:31:45,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:31:45,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:31:45,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:31:45,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:31:45,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:31:45,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:31:45,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 03:31:45,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:31:45,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:31:45,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:31:45,290 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 [2020-08-19 03:31:45,313 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:31:45,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:31:45,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:31:45,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:31:45,315 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:31:45,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:31:45,316 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:31:45,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:31:45,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:31:45,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:31:45,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:31:45,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:31:45,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:31:45,317 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:31:45,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:31:45,317 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:31:45,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:31:45,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:31:45,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:31:45,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:31:45,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:31:45,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:31:45,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:31:45,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:31:45,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:31:45,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:31:45,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:31:45,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:31:45,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:31:45,323 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:31:45,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:31:45,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:31:45,682 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:31:45,683 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:31:45,684 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:31:45,685 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-19 03:31:45,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/664bfdc55/e204ed22bb86402e8d244f5c6d6a0b54/FLAG7400fb3cb [2020-08-19 03:31:46,268 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:31:46,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-19 03:31:46,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/664bfdc55/e204ed22bb86402e8d244f5c6d6a0b54/FLAG7400fb3cb [2020-08-19 03:31:46,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/664bfdc55/e204ed22bb86402e8d244f5c6d6a0b54 [2020-08-19 03:31:46,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:31:46,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:31:46,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:31:46,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:31:46,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:31:46,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:31:46" (1/1) ... [2020-08-19 03:31:46,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@461dafa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:46, skipping insertion in model container [2020-08-19 03:31:46,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:31:46" (1/1) ... [2020-08-19 03:31:46,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:31:46,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:31:46,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:31:47,014 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:31:47,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:31:47,087 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:31:47,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47 WrapperNode [2020-08-19 03:31:47,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:31:47,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:31:47,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:31:47,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:31:47,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (1/1) ... [2020-08-19 03:31:47,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (1/1) ... [2020-08-19 03:31:47,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (1/1) ... [2020-08-19 03:31:47,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (1/1) ... [2020-08-19 03:31:47,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (1/1) ... [2020-08-19 03:31:47,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (1/1) ... [2020-08-19 03:31:47,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (1/1) ... [2020-08-19 03:31:47,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:31:47,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:31:47,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:31:47,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:31:47,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (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 [2020-08-19 03:31:47,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:31:47,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:31:47,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 03:31:47,227 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-19 03:31:47,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-19 03:31:47,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:31:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:31:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-19 03:31:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 03:31:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-19 03:31:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:31:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 03:31:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:31:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:31:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 03:31:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:31:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-19 03:31:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:31:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:31:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-19 03:31:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:31:47,837 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:31:47,837 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-19 03:31:47,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:31:47 BoogieIcfgContainer [2020-08-19 03:31:47,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:31:47,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:31:47,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:31:47,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:31:47,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:31:46" (1/3) ... [2020-08-19 03:31:47,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387425cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:31:47, skipping insertion in model container [2020-08-19 03:31:47,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (2/3) ... [2020-08-19 03:31:47,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387425cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:31:47, skipping insertion in model container [2020-08-19 03:31:47,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:31:47" (3/3) ... [2020-08-19 03:31:47,851 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-19 03:31:47,862 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:31:47,871 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:31:47,884 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:31:47,910 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:31:47,910 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:31:47,910 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:31:47,911 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:31:47,911 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:31:47,911 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:31:47,911 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:31:47,912 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:31:47,934 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-19 03:31:47,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 03:31:47,942 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:31:47,943 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] [2020-08-19 03:31:47,944 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:31:47,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:31:47,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-19 03:31:47,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:31:47,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548596843] [2020-08-19 03:31:47,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:31:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:31:48,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:31:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:31:48,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:31:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:31:48,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 03:31:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:31:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:31:48,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548596843] [2020-08-19 03:31:48,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:31:48,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:31:48,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133395648] [2020-08-19 03:31:48,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:31:48,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:31:48,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:31:48,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:31:48,234 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-19 03:31:48,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:31:48,529 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-19 03:31:48,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:31:48,549 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-19 03:31:48,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:31:48,561 INFO L225 Difference]: With dead ends: 138 [2020-08-19 03:31:48,561 INFO L226 Difference]: Without dead ends: 68 [2020-08-19 03:31:48,565 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 [2020-08-19 03:31:48,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-19 03:31:48,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-19 03:31:48,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-19 03:31:48,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-19 03:31:48,616 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-19 03:31:48,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:31:48,616 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-19 03:31:48,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:31:48,616 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-19 03:31:48,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 03:31:48,618 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:31:48,618 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] [2020-08-19 03:31:48,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:31:48,619 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:31:48,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:31:48,619 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-19 03:31:48,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:31:48,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425165261] [2020-08-19 03:31:48,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:31:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:31:48,713 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:31:48,714 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:31:48,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:31:48,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:31:48 BoogieIcfgContainer [2020-08-19 03:31:48,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:31:48,772 INFO L168 Benchmark]: Toolchain (without parser) took 2149.59 ms. Allocated memory was 138.4 MB in the beginning and 232.3 MB in the end (delta: 93.8 MB). Free memory was 100.8 MB in the beginning and 191.0 MB in the end (delta: -90.2 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-08-19 03:31:48,773 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 03:31:48,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 469.20 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 100.5 MB in the beginning and 175.3 MB in the end (delta: -74.7 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-19 03:31:48,776 INFO L168 Benchmark]: Boogie Preprocessor took 64.21 ms. Allocated memory is still 200.8 MB. Free memory was 175.3 MB in the beginning and 172.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-19 03:31:48,777 INFO L168 Benchmark]: RCFGBuilder took 688.81 ms. Allocated memory is still 200.8 MB. Free memory was 172.6 MB in the beginning and 136.8 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2020-08-19 03:31:48,779 INFO L168 Benchmark]: TraceAbstraction took 921.78 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 136.1 MB in the beginning and 191.0 MB in the end (delta: -54.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 03:31:48,785 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 138.4 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 469.20 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 100.5 MB in the beginning and 175.3 MB in the end (delta: -74.7 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.21 ms. Allocated memory is still 200.8 MB. Free memory was 175.3 MB in the beginning and 172.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 688.81 ms. Allocated memory is still 200.8 MB. Free memory was 172.6 MB in the beginning and 136.8 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 921.78 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 136.1 MB in the beginning and 191.0 MB in the end (delta: -54.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: 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 someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L183] RET isfinite_double(x) [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [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 [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L185] RET, EXPR fmod_double(x, y) [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x [L189] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 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, 0.0s 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...