/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-28 04:51:45,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-28 04:51:45,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-28 04:51:45,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-28 04:51:45,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-28 04:51:45,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-28 04:51:45,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-28 04:51:45,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-28 04:51:45,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-28 04:51:45,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-28 04:51:45,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-28 04:51:45,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-28 04:51:45,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-28 04:51:45,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-28 04:51:45,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-28 04:51:45,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-28 04:51:45,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-28 04:51:45,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-28 04:51:45,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-28 04:51:45,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-28 04:51:45,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-28 04:51:45,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-28 04:51:45,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-28 04:51:45,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-28 04:51:45,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-28 04:51:45,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-28 04:51:45,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-28 04:51:45,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-28 04:51:45,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-28 04:51:45,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-28 04:51:45,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-28 04:51:45,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-28 04:51:45,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-28 04:51:45,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-28 04:51:45,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-28 04:51:45,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-28 04:51:45,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-28 04:51:45,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-28 04:51:45,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-28 04:51:45,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-28 04:51:45,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-28 04:51:45,308 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 [2020-08-28 04:51:45,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-28 04:51:45,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-28 04:51:45,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-28 04:51:45,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-28 04:51:45,363 INFO L138 SettingsManager]: * Use SBE=true [2020-08-28 04:51:45,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-28 04:51:45,364 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-28 04:51:45,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-28 04:51:45,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-28 04:51:45,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-28 04:51:45,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-28 04:51:45,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-28 04:51:45,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-28 04:51:45,366 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-28 04:51:45,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-28 04:51:45,367 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-28 04:51:45,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-28 04:51:45,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-28 04:51:45,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-28 04:51:45,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-28 04:51:45,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-28 04:51:45,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-28 04:51:45,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-28 04:51:45,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-28 04:51:45,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-28 04:51:45,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-28 04:51:45,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-28 04:51:45,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-28 04:51:45,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-28 04:51:45,370 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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-28 04:51:45,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-28 04:51:45,904 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-28 04:51:45,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-28 04:51:45,913 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-28 04:51:45,914 INFO L275 PluginConnector]: CDTParser initialized [2020-08-28 04:51:45,915 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float1.c [2020-08-28 04:51:46,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e023b2f13/014244a821754a669f49a5d5437ffa87/FLAG2c6413c0d [2020-08-28 04:51:46,516 INFO L306 CDTParser]: Found 1 translation units. [2020-08-28 04:51:46,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float1.c [2020-08-28 04:51:46,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e023b2f13/014244a821754a669f49a5d5437ffa87/FLAG2c6413c0d [2020-08-28 04:51:46,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e023b2f13/014244a821754a669f49a5d5437ffa87 [2020-08-28 04:51:46,873 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-28 04:51:46,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-28 04:51:46,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-28 04:51:46,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-28 04:51:46,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-28 04:51:46,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 04:51:46" (1/1) ... [2020-08-28 04:51:46,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d198e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:46, skipping insertion in model container [2020-08-28 04:51:46,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 04:51:46" (1/1) ... [2020-08-28 04:51:46,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-28 04:51:46,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-28 04:51:47,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 04:51:47,203 INFO L203 MainTranslator]: Completed pre-run [2020-08-28 04:51:47,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 04:51:47,234 INFO L208 MainTranslator]: Completed translation [2020-08-28 04:51:47,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:47 WrapperNode [2020-08-28 04:51:47,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-28 04:51:47,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-28 04:51:47,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-28 04:51:47,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-28 04:51:47,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:47" (1/1) ... [2020-08-28 04:51:47,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:47" (1/1) ... [2020-08-28 04:51:47,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:47" (1/1) ... [2020-08-28 04:51:47,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:47" (1/1) ... [2020-08-28 04:51:47,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:47" (1/1) ... [2020-08-28 04:51:47,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:47" (1/1) ... [2020-08-28 04:51:47,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:47" (1/1) ... [2020-08-28 04:51:47,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-28 04:51:47,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-28 04:51:47,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-28 04:51:47,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-28 04:51:47,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-28 04:51:47,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-28 04:51:47,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-28 04:51:47,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-28 04:51:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-28 04:51:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-28 04:51:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-28 04:51:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-28 04:51:47,582 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-28 04:51:47,582 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-28 04:51:47,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 04:51:47 BoogieIcfgContainer [2020-08-28 04:51:47,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-28 04:51:47,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-28 04:51:47,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-28 04:51:47,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-28 04:51:47,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 04:51:46" (1/3) ... [2020-08-28 04:51:47,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad7a630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 04:51:47, skipping insertion in model container [2020-08-28 04:51:47,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:47" (2/3) ... [2020-08-28 04:51:47,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad7a630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 04:51:47, skipping insertion in model container [2020-08-28 04:51:47,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 04:51:47" (3/3) ... [2020-08-28 04:51:47,598 INFO L109 eAbstractionObserver]: Analyzing ICFG float1.c [2020-08-28 04:51:47,609 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-28 04:51:47,618 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-08-28 04:51:47,639 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-08-28 04:51:47,669 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-28 04:51:47,669 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-28 04:51:47,669 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-28 04:51:47,669 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-28 04:51:47,670 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-28 04:51:47,670 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-28 04:51:47,670 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-28 04:51:47,670 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-28 04:51:47,693 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-08-28 04:51:47,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-08-28 04:51:47,701 INFO L414 BasicCegarLoop]: Found error trace [2020-08-28 04:51:47,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-08-28 04:51:47,703 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-28 04:51:47,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-28 04:51:47,710 INFO L82 PathProgramCache]: Analyzing trace with hash 703471866, now seen corresponding path program 1 times [2020-08-28 04:51:47,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-28 04:51:47,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104241561] [2020-08-28 04:51:47,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-28 04:51:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-28 04:51:47,815 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-28 04:51:47,816 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-28 04:51:47,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-28 04:51:47,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.08 04:51:47 BoogieIcfgContainer [2020-08-28 04:51:47,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-28 04:51:47,842 INFO L168 Benchmark]: Toolchain (without parser) took 964.98 ms. Allocated memory was 148.9 MB in the beginning and 204.5 MB in the end (delta: 55.6 MB). Free memory was 104.0 MB in the beginning and 161.9 MB in the end (delta: -57.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-28 04:51:47,843 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 148.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-28 04:51:47,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.00 ms. Allocated memory is still 148.9 MB. Free memory was 103.8 MB in the beginning and 94.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-28 04:51:47,845 INFO L168 Benchmark]: Boogie Preprocessor took 115.24 ms. Allocated memory was 148.9 MB in the beginning and 204.5 MB in the end (delta: 55.6 MB). Free memory was 94.5 MB in the beginning and 183.4 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-28 04:51:47,846 INFO L168 Benchmark]: RCFGBuilder took 235.91 ms. Allocated memory is still 204.5 MB. Free memory was 182.8 MB in the beginning and 173.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-28 04:51:47,847 INFO L168 Benchmark]: TraceAbstraction took 249.33 ms. Allocated memory is still 204.5 MB. Free memory was 173.0 MB in the beginning and 161.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-08-28 04:51:47,851 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 148.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 359.00 ms. Allocated memory is still 148.9 MB. Free memory was 103.8 MB in the beginning and 94.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.24 ms. Allocated memory was 148.9 MB in the beginning and 204.5 MB in the end (delta: 55.6 MB). Free memory was 94.5 MB in the beginning and 183.4 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 235.91 ms. Allocated memory is still 204.5 MB. Free memory was 182.8 MB in the beginning and 173.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 249.33 ms. Allocated memory is still 204.5 MB. Free memory was 173.0 MB in the beginning and 161.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 8, overapproximation of someBinaryArithmeticDOUBLEoperation at line 7, overapproximation of to_real at line 6. Possible FailurePath: [L3] double x; [L4] int y; [L6] x=2 [L7] x-=0.6 [L8] y=x [L10] COND TRUE !(y==1) [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...