/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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div_bad.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:33:58,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:33:58,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:33:58,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:33:58,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:33:58,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:33:58,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:33:58,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:33:58,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:33:58,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:33:58,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:33:58,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:33:58,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:33:58,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:33:58,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:33:58,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:33:58,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:33:58,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:33:58,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:33:58,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:33:58,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:33:58,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:33:58,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:33:58,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:33:58,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:33:58,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:33:58,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:33:58,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:33:58,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:33:58,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:33:58,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:33:58,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:33:58,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:33:58,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:33:58,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:33:58,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:33:58,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:33:58,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:33:58,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:33:58,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:33:58,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:33:58,876 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 [2020-10-12 15:33:58,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:33:58,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:33:58,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:33:58,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:33:58,909 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:33:58,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:33:58,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:33:58,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:33:58,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:33:58,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:33:58,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:33:58,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:33:58,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:33:58,911 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:33:58,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:33:58,915 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:33:58,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:33:58,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:33:58,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:33:58,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:33:58,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:33:58,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:33:58,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:33:58,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:33:58,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:33:58,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:33:58,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:33:58,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:33:58,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:33:58,920 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.rcfgbuilder: Size of a code block -> SequenceOfStatements 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:33:59,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:33:59,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:33:59,250 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:33:59,252 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:33:59,253 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:33:59,254 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div_bad.i [2020-10-12 15:33:59,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cacb6a0ee/269978704f6b4090a55ef50fc1838c8a/FLAGb1e3babdf [2020-10-12 15:33:59,719 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:33:59,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-esbmc-regression/Double_div_bad.i [2020-10-12 15:33:59,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cacb6a0ee/269978704f6b4090a55ef50fc1838c8a/FLAGb1e3babdf [2020-10-12 15:34:00,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cacb6a0ee/269978704f6b4090a55ef50fc1838c8a [2020-10-12 15:34:00,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:34:00,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:34:00,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:34:00,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:34:00,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:34:00,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:34:00" (1/1) ... [2020-10-12 15:34:00,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c10802c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:00, skipping insertion in model container [2020-10-12 15:34:00,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:34:00" (1/1) ... [2020-10-12 15:34:00,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:34:00,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:34:00,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:34:00,367 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:34:00,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:34:00,399 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:34:00,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:00 WrapperNode [2020-10-12 15:34:00,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:34:00,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:34:00,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:34:00,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:34:00,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:00" (1/1) ... [2020-10-12 15:34:00,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:00" (1/1) ... [2020-10-12 15:34:00,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:00" (1/1) ... [2020-10-12 15:34:00,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:00" (1/1) ... [2020-10-12 15:34:00,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:00" (1/1) ... [2020-10-12 15:34:00,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:00" (1/1) ... [2020-10-12 15:34:00,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:00" (1/1) ... [2020-10-12 15:34:00,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:34:00,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:34:00,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:34:00,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:34:00,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:00" (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 [2020-10-12 15:34:00,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:34:00,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:34:00,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 15:34:00,593 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:34:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:34:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 15:34:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:34:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:34:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:34:00,758 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:34:00,758 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 15:34:00,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:34:00 BoogieIcfgContainer [2020-10-12 15:34:00,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:34:00,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:34:00,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:34:00,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:34:00,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:34:00" (1/3) ... [2020-10-12 15:34:00,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3583d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:34:00, skipping insertion in model container [2020-10-12 15:34:00,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:00" (2/3) ... [2020-10-12 15:34:00,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3583d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:34:00, skipping insertion in model container [2020-10-12 15:34:00,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:34:00" (3/3) ... [2020-10-12 15:34:00,770 INFO L109 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i [2020-10-12 15:34:00,781 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:34:00,788 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:34:00,802 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:34:00,824 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:34:00,825 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:34:00,825 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:34:00,825 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:34:00,825 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:34:00,825 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:34:00,825 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:34:00,826 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:34:00,840 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-12 15:34:00,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-12 15:34:00,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:00,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:00,846 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:00,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:00,851 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2020-10-12 15:34:00,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:00,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017047614] [2020-10-12 15:34:00,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:34:00,949 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:34:00,949 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:34:00,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:34:00,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:34:00 BoogieIcfgContainer [2020-10-12 15:34:00,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:34:00,971 INFO L168 Benchmark]: Toolchain (without parser) took 860.05 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 99.4 MB in the beginning and 155.8 MB in the end (delta: -56.4 MB). Peak memory consumption was 6.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:00,973 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 15:34:00,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.52 ms. Allocated memory is still 137.4 MB. Free memory was 99.2 MB in the beginning and 89.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:00,975 INFO L168 Benchmark]: Boogie Preprocessor took 126.95 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 89.8 MB in the beginning and 178.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:00,976 INFO L168 Benchmark]: RCFGBuilder took 234.41 ms. Allocated memory is still 200.3 MB. Free memory was 178.6 MB in the beginning and 167.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:00,977 INFO L168 Benchmark]: TraceAbstraction took 205.15 ms. Allocated memory is still 200.3 MB. Free memory was 166.8 MB in the beginning and 155.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-10-12 15:34:00,981 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 137.4 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.52 ms. Allocated memory is still 137.4 MB. Free memory was 99.2 MB in the beginning and 89.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.95 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 89.8 MB in the beginning and 178.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 234.41 ms. Allocated memory is still 200.3 MB. Free memory was 178.6 MB in the beginning and 167.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205.15 ms. Allocated memory is still 200.3 MB. Free memory was 166.8 MB in the beginning and 155.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L9] double x = 1.0; [L10] double x1 = x/1.6; [L12] COND FALSE !(x1 != x) [L18] CALL __VERIFIER_assert(x == 0) [L2] COND TRUE !(cond) [L2] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 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=18occurred 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, 10 NumberOfCodeBlocks, 10 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...