/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:47:32,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:47:32,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:47:32,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:47:32,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:47:32,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:47:32,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:47:32,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:47:32,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:47:32,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:47:32,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:47:32,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:47:32,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:47:32,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:47:32,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:47:32,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:47:32,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:47:32,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:47:32,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:47:32,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:47:32,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:47:32,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:47:32,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:47:32,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:47:32,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:47:32,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:47:32,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:47:32,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:47:32,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:47:32,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-27 21:47:32,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:47:32,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:47:32,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:47:32,860 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 [2020-08-27 21:47:32,887 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:47:32,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:47:32,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:47:32,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:47:32,889 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:47:32,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:47:32,889 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:47:32,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:47:32,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:47:32,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:47:32,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:47:32,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:47:32,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:47:32,891 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:47:32,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:47:32,891 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:47:32,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:47:32,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:47:32,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:47:32,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:47:32,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:47:32,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:47:32,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:47:32,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:47:32,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:47:32,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:47:32,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:47:32,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:47:32,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:47:32,894 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 -> false [2020-08-27 21:47:33,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:47:33,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:47:33,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:47:33,466 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:47:33,466 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:47:33,467 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-27 21:47:33,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27046b98e/3ef2a2b9f7db4546862db0ef8c4cad52/FLAG0ab4a830e [2020-08-27 21:47:34,094 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:47:34,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-27 21:47:34,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27046b98e/3ef2a2b9f7db4546862db0ef8c4cad52/FLAG0ab4a830e [2020-08-27 21:47:34,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27046b98e/3ef2a2b9f7db4546862db0ef8c4cad52 [2020-08-27 21:47:34,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:47:34,456 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:47:34,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:47:34,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:47:34,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:47:34,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:47:34" (1/1) ... [2020-08-27 21:47:34,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@173f5186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:34, skipping insertion in model container [2020-08-27 21:47:34,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:47:34" (1/1) ... [2020-08-27 21:47:34,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:47:34,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:47:34,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:47:34,898 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:47:35,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:47:35,078 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:47:35,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:35 WrapperNode [2020-08-27 21:47:35,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:47:35,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:47:35,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:47:35,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:47:35,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:35" (1/1) ... [2020-08-27 21:47:35,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:35" (1/1) ... [2020-08-27 21:47:35,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:35" (1/1) ... [2020-08-27 21:47:35,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:35" (1/1) ... [2020-08-27 21:47:35,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:35" (1/1) ... [2020-08-27 21:47:35,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:35" (1/1) ... [2020-08-27 21:47:35,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:35" (1/1) ... [2020-08-27 21:47:35,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:47:35,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:47:35,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:47:35,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:47:35,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:35" (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 [2020-08-27 21:47:35,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:47:35,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:47:35,236 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-27 21:47:35,236 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-08-27 21:47:35,236 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:47:35,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:47:35,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-27 21:47:35,238 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-27 21:47:35,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:47:35,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-27 21:47:35,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:47:35,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:47:35,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-27 21:47:35,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:47:35,240 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-08-27 21:47:35,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:47:35,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:47:35,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-27 21:47:35,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:47:35,712 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:47:35,712 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-27 21:47:35,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:47:35 BoogieIcfgContainer [2020-08-27 21:47:35,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:47:35,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:47:35,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:47:35,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:47:35,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:47:34" (1/3) ... [2020-08-27 21:47:35,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e21d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:47:35, skipping insertion in model container [2020-08-27 21:47:35,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:35" (2/3) ... [2020-08-27 21:47:35,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e21d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:47:35, skipping insertion in model container [2020-08-27 21:47:35,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:47:35" (3/3) ... [2020-08-27 21:47:35,735 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-08-27 21:47:35,747 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:47:35,759 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:47:35,780 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:47:35,808 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:47:35,809 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:47:35,809 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:47:35,809 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:47:35,809 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:47:35,809 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:47:35,809 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:47:35,810 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:47:35,835 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-08-27 21:47:35,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-27 21:47:35,844 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:35,846 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] [2020-08-27 21:47:35,846 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:35,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:35,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-08-27 21:47:35,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:35,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078865865] [2020-08-27 21:47:35,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:36,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:47:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:36,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:47:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:36,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-27 21:47:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:47:36,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078865865] [2020-08-27 21:47:36,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:47:36,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:47:36,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800125131] [2020-08-27 21:47:36,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:47:36,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:47:36,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:47:36,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:47:36,205 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-08-27 21:47:36,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:47:36,460 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-08-27 21:47:36,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:47:36,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-27 21:47:36,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:47:36,478 INFO L225 Difference]: With dead ends: 112 [2020-08-27 21:47:36,478 INFO L226 Difference]: Without dead ends: 55 [2020-08-27 21:47:36,484 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 [2020-08-27 21:47:36,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-27 21:47:36,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-27 21:47:36,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-27 21:47:36,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-08-27 21:47:36,544 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-08-27 21:47:36,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:47:36,545 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-08-27 21:47:36,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:47:36,545 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-08-27 21:47:36,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-27 21:47:36,546 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:36,547 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] [2020-08-27 21:47:36,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:47:36,547 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:36,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:36,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-08-27 21:47:36,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:36,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698904102] [2020-08-27 21:47:36,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-27 21:47:36,648 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-27 21:47:36,649 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-27 21:47:36,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:47:36,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:47:36 BoogieIcfgContainer [2020-08-27 21:47:36,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 21:47:36,709 INFO L168 Benchmark]: Toolchain (without parser) took 2252.86 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.0 MB in the beginning and 94.2 MB in the end (delta: 7.8 MB). Peak memory consumption was 70.7 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:36,712 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-27 21:47:36,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 620.56 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 179.1 MB in the end (delta: -77.3 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:36,715 INFO L168 Benchmark]: Boogie Preprocessor took 69.85 ms. Allocated memory is still 202.9 MB. Free memory was 179.1 MB in the beginning and 176.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:36,716 INFO L168 Benchmark]: RCFGBuilder took 570.40 ms. Allocated memory is still 202.9 MB. Free memory was 176.2 MB in the beginning and 148.3 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:36,717 INFO L168 Benchmark]: TraceAbstraction took 981.99 ms. Allocated memory is still 202.9 MB. Free memory was 148.3 MB in the beginning and 94.2 MB in the end (delta: 54.1 MB). Peak memory consumption was 54.1 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:36,728 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 620.56 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 179.1 MB in the end (delta: -77.3 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.85 ms. Allocated memory is still 202.9 MB. Free memory was 179.1 MB in the beginning and 176.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 570.40 ms. Allocated memory is still 202.9 MB. Free memory was 176.2 MB in the beginning and 148.3 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 981.99 ms. Allocated memory is still 202.9 MB. Free memory was 148.3 MB in the beginning and 94.2 MB in the end (delta: 54.1 MB). Peak memory consumption was 54.1 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...