/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=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:52:21,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:52:21,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:52:21,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:52:21,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:52:21,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:52:21,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:52:21,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:52:21,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:52:21,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:52:21,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:52:21,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:52:21,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:52:21,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:52:21,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:52:21,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:52:21,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:52:21,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:52:21,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:52:21,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:52:21,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:52:21,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:52:21,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:52:21,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:52:21,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 21:52:21,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:52:21,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:52:21,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:52:21,181 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 [2020-08-18 21:52:21,229 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:52:21,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:52:21,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:52:21,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:52:21,232 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:52:21,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:52:21,232 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:52:21,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:52:21,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:52:21,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:52:21,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:52:21,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:52:21,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:52:21,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:52:21,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:52:21,234 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:52:21,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:52:21,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:52:21,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:52:21,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:52:21,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:52:21,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:52:21,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:52:21,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:52:21,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:52:21,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:52:21,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:52:21,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:52:21,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:52:21,239 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=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 21:52:21,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:52:21,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:52:21,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:52:21,552 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:52:21,553 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:52:21,553 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-18 21:52:21,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5dd049d27/3c2767be7d524212abe95917d7743828/FLAG80dffbda0 [2020-08-18 21:52:22,106 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:52:22,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-18 21:52:22,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5dd049d27/3c2767be7d524212abe95917d7743828/FLAG80dffbda0 [2020-08-18 21:52:22,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5dd049d27/3c2767be7d524212abe95917d7743828 [2020-08-18 21:52:22,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:52:22,522 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:52:22,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:52:22,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:52:22,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:52:22,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:52:22" (1/1) ... [2020-08-18 21:52:22,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19d3df7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:22, skipping insertion in model container [2020-08-18 21:52:22,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:52:22" (1/1) ... [2020-08-18 21:52:22,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:52:22,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:52:22,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:52:22,854 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:52:22,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:52:23,018 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:52:23,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:23 WrapperNode [2020-08-18 21:52:23,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:52:23,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:52:23,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:52:23,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:52:23,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:23" (1/1) ... [2020-08-18 21:52:23,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:23" (1/1) ... [2020-08-18 21:52:23,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:23" (1/1) ... [2020-08-18 21:52:23,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:23" (1/1) ... [2020-08-18 21:52:23,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:23" (1/1) ... [2020-08-18 21:52:23,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:23" (1/1) ... [2020-08-18 21:52:23,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:23" (1/1) ... [2020-08-18 21:52:23,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:52:23,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:52:23,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:52:23,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:52:23,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:23" (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 [2020-08-18 21:52:23,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:52:23,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:52:23,146 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-18 21:52:23,146 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-08-18 21:52:23,146 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:52:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:52:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-18 21:52:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-18 21:52:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:52:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 21:52:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:52:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:52:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 21:52:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:52:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-08-18 21:52:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:52:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:52:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 21:52:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:52:23,673 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:52:23,673 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-18 21:52:23,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:52:23 BoogieIcfgContainer [2020-08-18 21:52:23,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:52:23,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:52:23,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:52:23,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:52:23,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:52:22" (1/3) ... [2020-08-18 21:52:23,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573437de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:52:23, skipping insertion in model container [2020-08-18 21:52:23,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:52:23" (2/3) ... [2020-08-18 21:52:23,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573437de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:52:23, skipping insertion in model container [2020-08-18 21:52:23,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:52:23" (3/3) ... [2020-08-18 21:52:23,686 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-08-18 21:52:23,697 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:52:23,705 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:52:23,719 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:52:23,745 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:52:23,746 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:52:23,746 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:52:23,746 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:52:23,747 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:52:23,747 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:52:23,747 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:52:23,747 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:52:23,769 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-08-18 21:52:23,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 21:52:23,776 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:52:23,778 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] [2020-08-18 21:52:23,778 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:52:23,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:52:23,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-08-18 21:52:23,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:52:23,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243612242] [2020-08-18 21:52:23,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:52:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:24,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:52:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:24,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:52:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:24,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:52:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:52:24,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:52:24,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243612242] [2020-08-18 21:52:24,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:52:24,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:52:24,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822631897] [2020-08-18 21:52:24,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:52:24,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:52:24,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:52:24,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:52:24,094 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-08-18 21:52:24,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:52:24,389 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-08-18 21:52:24,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 21:52:24,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 21:52:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:52:24,402 INFO L225 Difference]: With dead ends: 112 [2020-08-18 21:52:24,402 INFO L226 Difference]: Without dead ends: 55 [2020-08-18 21:52:24,406 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 [2020-08-18 21:52:24,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-18 21:52:24,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-18 21:52:24,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-18 21:52:24,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-08-18 21:52:24,452 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-08-18 21:52:24,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:52:24,453 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-08-18 21:52:24,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:52:24,453 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-08-18 21:52:24,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 21:52:24,455 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:52:24,455 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] [2020-08-18 21:52:24,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:52:24,456 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:52:24,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:52:24,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-08-18 21:52:24,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:52:24,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143778968] [2020-08-18 21:52:24,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:52:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:52:24,554 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:52:24,554 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:52:24,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:52:24,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:52:24 BoogieIcfgContainer [2020-08-18 21:52:24,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:52:24,582 INFO L168 Benchmark]: Toolchain (without parser) took 2059.42 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.8 MB in the beginning and 94.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. [2020-08-18 21:52:24,584 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-18 21:52:24,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 495.51 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.4 MB in the beginning and 179.6 MB in the end (delta: -76.2 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-18 21:52:24,586 INFO L168 Benchmark]: Boogie Preprocessor took 62.77 ms. Allocated memory is still 203.4 MB. Free memory was 179.6 MB in the beginning and 176.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-18 21:52:24,587 INFO L168 Benchmark]: RCFGBuilder took 595.73 ms. Allocated memory is still 203.4 MB. Free memory was 176.8 MB in the beginning and 148.8 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-08-18 21:52:24,588 INFO L168 Benchmark]: TraceAbstraction took 900.30 ms. Allocated memory is still 203.4 MB. Free memory was 148.8 MB in the beginning and 94.6 MB in the end (delta: 54.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. [2020-08-18 21:52:24,592 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 495.51 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.4 MB in the beginning and 179.6 MB in the end (delta: -76.2 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.77 ms. Allocated memory is still 203.4 MB. Free memory was 179.6 MB in the beginning and 176.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 595.73 ms. Allocated memory is still 203.4 MB. Free memory was 176.8 MB in the beginning and 148.8 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 900.30 ms. Allocated memory is still 203.4 MB. Free memory was 148.8 MB in the beginning and 94.6 MB in the end (delta: 54.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; [L129] CALL isfinite_float(x) [L109] __int32_t ix; [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); [L129] RET isfinite_float(x) [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 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: 73 SDtfs, 6 SDslu, 63 SDs, 0 SdLazy, 78 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=60occurred 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...