/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=0.3 -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 0.1.25-5644d1e-m [2020-08-19 05:08:46,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:08:46,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:08:46,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:08:46,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:08:46,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:08:46,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:08:46,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:08:46,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:08:46,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:08:46,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:08:46,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:08:46,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:08:46,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:08:46,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:08:46,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:08:46,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:08:46,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:08:46,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:08:46,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:08:46,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:08:46,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:08:46,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:08:46,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:08:46,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:08:46,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:08:46,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:08:46,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:08:46,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:08:46,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 05:08:46,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:08:46,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:08:46,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:08:46,797 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 05:08:46,835 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:08:46,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:08:46,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:08:46,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:08:46,840 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:08:46,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:08:46,841 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:08:46,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:08:46,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:08:46,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:08:46,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:08:46,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:08:46,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:08:46,842 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:08:46,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:08:46,846 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:08:46,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:08:46,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:08:46,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:08:46,847 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:08:46,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:08:46,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:08:46,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:08:46,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:08:46,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:08:46,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:08:46,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:08:46,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:08:46,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:08:46,851 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=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:08:47,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:08:47,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:08:47,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:08:47,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:08:47,194 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:08:47,195 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-19 05:08:47,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4a3df93b/ac007dbf7a7c45d5b9acaf4419eedd48/FLAGa62f39e2e [2020-08-19 05:08:47,754 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:08:47,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-19 05:08:47,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4a3df93b/ac007dbf7a7c45d5b9acaf4419eedd48/FLAGa62f39e2e [2020-08-19 05:08:48,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4a3df93b/ac007dbf7a7c45d5b9acaf4419eedd48 [2020-08-19 05:08:48,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:08:48,050 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:08:48,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:08:48,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:08:48,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:08:48,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17979b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48, skipping insertion in model container [2020-08-19 05:08:48,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:08:48,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:08:48,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:08:48,344 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:08:48,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:08:48,530 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:08:48,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48 WrapperNode [2020-08-19 05:08:48,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:08:48,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:08:48,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:08:48,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:08:48,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:08:48,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:08:48,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:08:48,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:08:48,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (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 05:08:48,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:08:48,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:08:48,670 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-19 05:08:48,671 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-19 05:08:48,671 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:08:48,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:08:48,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-19 05:08:48,672 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-19 05:08:48,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:08:48,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 05:08:48,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:08:48,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:08:48,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 05:08:48,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:08:48,674 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-19 05:08:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:08:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:08:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-19 05:08:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:08:49,302 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:08:49,303 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-19 05:08:49,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:08:49 BoogieIcfgContainer [2020-08-19 05:08:49,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:08:49,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:08:49,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:08:49,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:08:49,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:08:48" (1/3) ... [2020-08-19 05:08:49,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18eb06c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:08:49, skipping insertion in model container [2020-08-19 05:08:49,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (2/3) ... [2020-08-19 05:08:49,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18eb06c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:08:49, skipping insertion in model container [2020-08-19 05:08:49,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:08:49" (3/3) ... [2020-08-19 05:08:49,324 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-08-19 05:08:49,334 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:08:49,343 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:08:49,355 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:08:49,380 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:08:49,380 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:08:49,380 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:08:49,381 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:08:49,381 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:08:49,381 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:08:49,381 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:08:49,382 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:08:49,402 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-19 05:08:49,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 05:08:49,410 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:08:49,412 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 05:08:49,412 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:08:49,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:08:49,417 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-08-19 05:08:49,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:08:49,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040912108] [2020-08-19 05:08:49,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:08:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:08:49,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:08:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:08:49,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:08:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:08:49,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 05:08:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:08:49,671 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 05:08:49,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040912108] [2020-08-19 05:08:49,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:08:49,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:08:49,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790044311] [2020-08-19 05:08:49,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:08:49,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:08:49,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:08:49,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:08:49,706 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-19 05:08:50,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:08:50,067 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-19 05:08:50,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:08:50,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-19 05:08:50,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:08:50,080 INFO L225 Difference]: With dead ends: 138 [2020-08-19 05:08:50,081 INFO L226 Difference]: Without dead ends: 68 [2020-08-19 05:08:50,085 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 05:08:50,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-19 05:08:50,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-19 05:08:50,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-19 05:08:50,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-19 05:08:50,138 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-19 05:08:50,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:08:50,138 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-19 05:08:50,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:08:50,139 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-19 05:08:50,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 05:08:50,166 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:08:50,166 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 05:08:50,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:08:50,167 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:08:50,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:08:50,168 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-08-19 05:08:50,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:08:50,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940775320] [2020-08-19 05:08:50,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:08:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:08:50,364 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:08:50,364 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:08:50,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:08:50,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:08:50 BoogieIcfgContainer [2020-08-19 05:08:50,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:08:50,424 INFO L168 Benchmark]: Toolchain (without parser) took 2373.06 ms. Allocated memory was 136.8 MB in the beginning and 227.5 MB in the end (delta: 90.7 MB). Free memory was 99.5 MB in the beginning and 190.1 MB in the end (delta: -90.7 MB). Peak memory consumption was 30.1 kB. Max. memory is 7.1 GB. [2020-08-19 05:08:50,426 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 05:08:50,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 481.21 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 99.3 MB in the beginning and 174.6 MB in the end (delta: -75.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-08-19 05:08:50,429 INFO L168 Benchmark]: Boogie Preprocessor took 78.61 ms. Allocated memory is still 199.8 MB. Free memory was 174.6 MB in the beginning and 172.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-08-19 05:08:50,431 INFO L168 Benchmark]: RCFGBuilder took 699.24 ms. Allocated memory is still 199.8 MB. Free memory was 171.7 MB in the beginning and 135.8 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. [2020-08-19 05:08:50,434 INFO L168 Benchmark]: TraceAbstraction took 1106.73 ms. Allocated memory was 199.8 MB in the beginning and 227.5 MB in the end (delta: 27.8 MB). Free memory was 135.8 MB in the beginning and 190.1 MB in the end (delta: -54.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 05:08:50,440 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 481.21 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 99.3 MB in the beginning and 174.6 MB in the end (delta: -75.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.61 ms. Allocated memory is still 199.8 MB. Free memory was 174.6 MB in the beginning and 172.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 699.24 ms. Allocated memory is still 199.8 MB. Free memory was 171.7 MB in the beginning and 135.8 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1106.73 ms. Allocated memory was 199.8 MB in the beginning and 227.5 MB in the end (delta: 27.8 MB). Free memory was 135.8 MB in the beginning and 190.1 MB in the end (delta: -54.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 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: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, 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, 0.2s 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...