/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=NARROWEST --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/float-benchs/filter1.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:15:07,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:15:07,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:15:07,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:15:07,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:15:07,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:15:07,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:15:07,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:15:07,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:15:07,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:15:07,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:15:07,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:15:07,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:15:07,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:15:07,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:15:07,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:15:07,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:15:07,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:15:07,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:15:07,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:15:07,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:15:07,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:15:07,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:15:07,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:15:07,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:15:07,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:15:07,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:15:07,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:15:07,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:15:07,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:15:07,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:15:07,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:15:07,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:15:07,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:15:07,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:15:07,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:15:07,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:15:07,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:15:07,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:15:07,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:15:07,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:15:07,904 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 [2020-10-13 10:15:07,926 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:15:07,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:15:07,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:15:07,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:15:07,928 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:15:07,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:15:07,929 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:15:07,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:15:07,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:15:07,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:15:07,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:15:07,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:15:07,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:15:07,930 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:15:07,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:15:07,930 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:15:07,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:15:07,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:15:07,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:15:07,931 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:15:07,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:15:07,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:15:07,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:15:07,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:15:07,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:15:07,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:15:07,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:15:07,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:15:07,933 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:15:07,933 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:15:08,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:15:08,278 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:15:08,281 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:15:08,283 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:15:08,283 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:15:08,284 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/filter1.c.v+lhb-reducer.c [2020-10-13 10:15:08,350 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6e747621/70e1067963a640609601f9f8e98dffe3/FLAGe2cb0b28a [2020-10-13 10:15:08,816 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:15:08,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/filter1.c.v+lhb-reducer.c [2020-10-13 10:15:08,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6e747621/70e1067963a640609601f9f8e98dffe3/FLAGe2cb0b28a [2020-10-13 10:15:09,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6e747621/70e1067963a640609601f9f8e98dffe3 [2020-10-13 10:15:09,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:15:09,252 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:15:09,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:15:09,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:15:09,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:15:09,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:15:09" (1/1) ... [2020-10-13 10:15:09,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b610eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:09, skipping insertion in model container [2020-10-13 10:15:09,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:15:09" (1/1) ... [2020-10-13 10:15:09,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:15:09,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:15:09,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:15:09,518 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:15:09,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:15:09,673 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:15:09,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:09 WrapperNode [2020-10-13 10:15:09,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:15:09,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:15:09,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:15:09,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:15:09,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:09" (1/1) ... [2020-10-13 10:15:09,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:09" (1/1) ... [2020-10-13 10:15:09,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:09" (1/1) ... [2020-10-13 10:15:09,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:09" (1/1) ... [2020-10-13 10:15:09,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:09" (1/1) ... [2020-10-13 10:15:09,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:09" (1/1) ... [2020-10-13 10:15:09,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:09" (1/1) ... [2020-10-13 10:15:09,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:15:09,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:15:09,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:15:09,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:15:09,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:09" (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 [2020-10-13 10:15:09,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:15:09,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:15:09,793 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 10:15:09,793 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:15:09,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:15:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:15:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-13 10:15:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:15:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 10:15:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 10:15:09,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:15:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:15:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:15:10,153 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:15:10,153 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 10:15:10,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:15:10 BoogieIcfgContainer [2020-10-13 10:15:10,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:15:10,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:15:10,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:15:10,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:15:10,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:15:09" (1/3) ... [2020-10-13 10:15:10,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f70030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:15:10, skipping insertion in model container [2020-10-13 10:15:10,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:09" (2/3) ... [2020-10-13 10:15:10,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f70030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:15:10, skipping insertion in model container [2020-10-13 10:15:10,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:15:10" (3/3) ... [2020-10-13 10:15:10,168 INFO L109 eAbstractionObserver]: Analyzing ICFG filter1.c.v+lhb-reducer.c [2020-10-13 10:15:10,179 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:15:10,187 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-13 10:15:10,203 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-13 10:15:10,232 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:15:10,232 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:15:10,233 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:15:10,233 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:15:10,233 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:15:10,233 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:15:10,234 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:15:10,234 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:15:10,255 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-13 10:15:10,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 10:15:10,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:15:10,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:15:10,263 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:15:10,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:15:10,270 INFO L82 PathProgramCache]: Analyzing trace with hash -296803993, now seen corresponding path program 1 times [2020-10-13 10:15:10,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:15:10,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302526641] [2020-10-13 10:15:10,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:15:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:15:10,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:10,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:15:10,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 10:15:10,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:15:10,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-13 10:15:10,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:15:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:15:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 10:15:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:15:10,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:15:10,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:15:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:15:10,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:10,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:15:10,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:15:10,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:15:10,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:15:10,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:15:10,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:15:10,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:15:10,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:15:10,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:15:10,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:15:10,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302526641] [2020-10-13 10:15:10,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:15:10,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:15:10,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308867840] [2020-10-13 10:15:10,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:15:10,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:15:10,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:15:10,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:15:10,791 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-10-13 10:15:11,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:15:11,041 INFO L93 Difference]: Finished difference Result 66 states and 89 transitions. [2020-10-13 10:15:11,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:15:11,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-13 10:15:11,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:15:11,054 INFO L225 Difference]: With dead ends: 66 [2020-10-13 10:15:11,055 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 10:15:11,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:15:11,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 10:15:11,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2020-10-13 10:15:11,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-13 10:15:11,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-10-13 10:15:11,114 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 17 [2020-10-13 10:15:11,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:15:11,114 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-10-13 10:15:11,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:15:11,115 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-10-13 10:15:11,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 10:15:11,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:15:11,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:15:11,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:15:11,117 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:15:11,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:15:11,118 INFO L82 PathProgramCache]: Analyzing trace with hash -233081044, now seen corresponding path program 1 times [2020-10-13 10:15:11,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:15:11,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548196025] [2020-10-13 10:15:11,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:15:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:15:11,138 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:15:11,138 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:15:11,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:15:11,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:15:11 BoogieIcfgContainer [2020-10-13 10:15:11,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:15:11,167 INFO L168 Benchmark]: Toolchain (without parser) took 1914.68 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 103.1 MB in the beginning and 105.8 MB in the end (delta: -2.7 MB). Peak memory consumption was 54.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:11,169 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:15:11,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.47 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 102.9 MB in the beginning and 182.3 MB in the end (delta: -79.4 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:11,171 INFO L168 Benchmark]: Boogie Preprocessor took 47.80 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 180.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:11,172 INFO L168 Benchmark]: RCFGBuilder took 435.68 ms. Allocated memory is still 203.9 MB. Free memory was 180.0 MB in the beginning and 162.1 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:11,173 INFO L168 Benchmark]: TraceAbstraction took 1004.24 ms. Allocated memory is still 203.9 MB. Free memory was 161.5 MB in the beginning and 105.8 MB in the end (delta: 55.7 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:11,178 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 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 421.47 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 102.9 MB in the beginning and 182.3 MB in the end (delta: -79.4 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.80 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 180.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.68 ms. Allocated memory is still 203.9 MB. Free memory was 180.0 MB in the beginning and 162.1 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1004.24 ms. Allocated memory is still 203.9 MB. Free memory was 161.5 MB in the beginning and 105.8 MB in the end (delta: 55.7 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 56]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 43, overapproximation of to_real at line 21, overapproximation of someBinaryArithmeticDOUBLEoperation at line 171. Possible FailurePath: [L1] int __return_main; [L11] int __tmp_129_0; [L12] int __tmp_129_1; [L13] int __tmp_129_2; [L14] int __return_134; [L17] double main__E0; [L18] double main__E1; [L19] double main__S; [L20] int main__i; [L21] main__E1 = 0 [L22] main__S = 0 [L23] main__i = 0 [L24] COND TRUE main__i <= 1000000 [L26] main__E0 = __VERIFIER_nondet_double() [L27] int main____CPAchecker_TMP_0; [L28] COND TRUE main__E0 >= -1.0 [L30] COND TRUE main__E0 <= 1.0 [L32] main____CPAchecker_TMP_0 = 1 [L33] COND TRUE main____CPAchecker_TMP_0 != 0 [L35] int main____CPAchecker_TMP_1; [L36] main____CPAchecker_TMP_1 = __VERIFIER_nondet_int() [L37] COND FALSE !(!(main____CPAchecker_TMP_1 == 0)) [L171] main__S = ((0.999 * main__S) + main__E0) - main__E1 [L41] main__E1 = main__E0 [L42] int main____CPAchecker_TMP_2; [L43] COND FALSE !(main__S >= -10000.0) [L160] main____CPAchecker_TMP_2 = 0 [L50] int __tmp_1; [L51] __tmp_1 = main____CPAchecker_TMP_2 [L52] int __VERIFIER_assert__cond; [L53] __VERIFIER_assert__cond = __tmp_1 [L54] COND TRUE __VERIFIER_assert__cond == 0 [L56] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 47 SDslu, 64 SDs, 0 SdLazy, 76 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 16 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 560 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...