/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:19:39,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:19:39,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:19:39,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:19:39,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:19:39,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:19:39,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:19:39,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:19:39,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:19:39,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:19:39,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:19:39,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:19:39,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:19:39,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:19:39,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:19:39,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:19:39,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:19:39,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:19:39,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:19:39,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:19:39,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:19:39,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:19:39,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:19:39,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:19:39,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:19:39,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:19:39,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:19:39,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:19:39,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:19:39,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 21:19:39,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:19:39,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:19:39,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:19:39,735 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 21:19:39,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:19:39,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:19:39,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:19:39,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:19:39,789 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:19:39,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:19:39,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:19:39,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:19:39,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:19:39,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:19:39,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:19:39,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:19:39,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:19:39,790 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:19:39,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:19:39,792 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:19:39,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:19:39,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:19:39,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:19:39,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:19:39,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:19:39,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:19:39,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:19:39,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:19:39,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:19:39,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:19:39,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:19:39,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:19:39,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:19:39,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:19:40,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:19:40,144 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:19:40,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:19:40,150 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:19:40,152 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:19:40,153 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-21 21:19:40,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b371b37e7/daa80eb2009241458d6e0ed56e09c0c1/FLAG2283cca92 [2020-08-21 21:19:40,662 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:19:40,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-21 21:19:40,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b371b37e7/daa80eb2009241458d6e0ed56e09c0c1/FLAG2283cca92 [2020-08-21 21:19:41,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b371b37e7/daa80eb2009241458d6e0ed56e09c0c1 [2020-08-21 21:19:41,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:19:41,019 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:19:41,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:19:41,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:19:41,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:19:41,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:19:41" (1/1) ... [2020-08-21 21:19:41,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400b1421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:41, skipping insertion in model container [2020-08-21 21:19:41,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:19:41" (1/1) ... [2020-08-21 21:19:41,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:19:41,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:19:41,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:19:41,298 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:19:41,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:19:41,433 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:19:41,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:41 WrapperNode [2020-08-21 21:19:41,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:19:41,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:19:41,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:19:41,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:19:41,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:41" (1/1) ... [2020-08-21 21:19:41,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:41" (1/1) ... [2020-08-21 21:19:41,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:41" (1/1) ... [2020-08-21 21:19:41,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:41" (1/1) ... [2020-08-21 21:19:41,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:41" (1/1) ... [2020-08-21 21:19:41,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:41" (1/1) ... [2020-08-21 21:19:41,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:41" (1/1) ... [2020-08-21 21:19:41,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:19:41,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:19:41,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:19:41,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:19:41,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:19:41,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:19:41,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:19:41,558 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-21 21:19:41,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-08-21 21:19:41,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:19:41,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:19:41,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-21 21:19:41,559 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-21 21:19:41,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:19:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 21:19:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:19:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:19:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 21:19:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:19:41,562 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-08-21 21:19:41,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:19:41,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:19:41,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-21 21:19:41,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:19:42,045 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:19:42,046 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-21 21:19:42,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:19:42 BoogieIcfgContainer [2020-08-21 21:19:42,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:19:42,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:19:42,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:19:42,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:19:42,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:19:41" (1/3) ... [2020-08-21 21:19:42,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bc1c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:19:42, skipping insertion in model container [2020-08-21 21:19:42,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:41" (2/3) ... [2020-08-21 21:19:42,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bc1c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:19:42, skipping insertion in model container [2020-08-21 21:19:42,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:19:42" (3/3) ... [2020-08-21 21:19:42,060 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-08-21 21:19:42,070 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:19:42,082 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:19:42,093 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:19:42,115 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:19:42,115 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:19:42,115 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:19:42,116 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:19:42,116 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:19:42,116 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:19:42,116 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:19:42,116 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:19:42,135 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-08-21 21:19:42,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 21:19:42,141 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:19:42,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:19:42,143 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:19:42,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:19:42,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-08-21 21:19:42,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:19:42,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11810514] [2020-08-21 21:19:42,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:19:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:42,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:19:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:42,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:19:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:42,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 21:19:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:42,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:19:42,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11810514] [2020-08-21 21:19:42,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:19:42,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:19:42,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713357651] [2020-08-21 21:19:42,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:19:42,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:19:42,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:19:42,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:19:42,487 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-08-21 21:19:42,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:19:42,768 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-08-21 21:19:42,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 21:19:42,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-21 21:19:42,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:19:42,782 INFO L225 Difference]: With dead ends: 112 [2020-08-21 21:19:42,783 INFO L226 Difference]: Without dead ends: 55 [2020-08-21 21:19:42,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:19:42,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-21 21:19:42,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-21 21:19:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-21 21:19:42,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-08-21 21:19:42,837 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-08-21 21:19:42,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:19:42,837 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-08-21 21:19:42,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:19:42,838 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-08-21 21:19:42,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 21:19:42,839 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:19:42,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:19:42,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:19:42,840 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:19:42,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:19:42,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-08-21 21:19:42,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:19:42,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786911983] [2020-08-21 21:19:42,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:19:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 21:19:42,967 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 21:19:42,968 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 21:19:42,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:19:43,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:19:43 BoogieIcfgContainer [2020-08-21 21:19:43,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:19:43,007 INFO L168 Benchmark]: Toolchain (without parser) took 1987.91 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 102.4 MB in the beginning and 93.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. [2020-08-21 21:19:43,009 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-21 21:19:43,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.79 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 102.0 MB in the beginning and 178.2 MB in the end (delta: -76.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-21 21:19:43,011 INFO L168 Benchmark]: Boogie Preprocessor took 50.38 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 176.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-21 21:19:43,012 INFO L168 Benchmark]: RCFGBuilder took 567.26 ms. Allocated memory is still 201.9 MB. Free memory was 175.2 MB in the beginning and 147.2 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-08-21 21:19:43,013 INFO L168 Benchmark]: TraceAbstraction took 951.49 ms. Allocated memory is still 201.9 MB. Free memory was 147.2 MB in the beginning and 93.2 MB in the end (delta: 54.0 MB). Peak memory consumption was 54.0 MB. Max. memory is 7.1 GB. [2020-08-21 21:19:43,017 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 413.79 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 102.0 MB in the beginning and 178.2 MB in the end (delta: -76.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.38 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 176.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 567.26 ms. Allocated memory is still 201.9 MB. Free memory was 175.2 MB in the beginning and 147.2 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 951.49 ms. Allocated memory is still 201.9 MB. Free memory was 147.2 MB in the beginning and 93.2 MB in the end (delta: 54.0 MB). Peak memory consumption was 54.0 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, 0.1s 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...