/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:29:30,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:29:30,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:29:30,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:29:30,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:29:30,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:29:30,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:29:30,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:29:30,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:29:30,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:29:30,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:29:30,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:29:30,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:29:30,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:29:30,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:29:30,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:29:30,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:29:30,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:29:30,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:29:30,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:29:30,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:29:30,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:29:30,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:29:30,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:29:30,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:29:30,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:29:30,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:29:30,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:29:30,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:29:30,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:29:30,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:29:30,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:29:31,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:29:31,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:29:31,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:29:31,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:29:31,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:29:31,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:29:31,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:29:31,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:29:31,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:29:31,028 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 [2020-10-28 14:29:31,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:29:31,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:29:31,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:29:31,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:29:31,066 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:29:31,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:29:31,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:29:31,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:29:31,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:29:31,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:29:31,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:29:31,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:29:31,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:29:31,068 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:29:31,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:29:31,068 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:29:31,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:29:31,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:29:31,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:29:31,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:29:31,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:29:31,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:29:31,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:29:31,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:29:31,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:29:31,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:29:31,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:29:31,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:29:31,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:29:31,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:29:31,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:29:31,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:29:31,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:29:31,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:29:31,581 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:29:31,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c [2020-10-28 14:29:31,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0acc4e2f8/1fc551ba39e842f6beb2d20f96bee930/FLAG19adf65da [2020-10-28 14:29:32,307 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:29:32,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c [2020-10-28 14:29:32,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0acc4e2f8/1fc551ba39e842f6beb2d20f96bee930/FLAG19adf65da [2020-10-28 14:29:32,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0acc4e2f8/1fc551ba39e842f6beb2d20f96bee930 [2020-10-28 14:29:32,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:29:32,686 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:29:32,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:29:32,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:29:32,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:29:32,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:29:32" (1/1) ... [2020-10-28 14:29:32,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d0eba46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:32, skipping insertion in model container [2020-10-28 14:29:32,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:29:32" (1/1) ... [2020-10-28 14:29:32,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:29:32,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:29:32,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:29:32,951 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:29:32,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:29:32,987 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:29:32,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:32 WrapperNode [2020-10-28 14:29:32,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:29:32,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:29:32,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:29:32,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:29:33,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:32" (1/1) ... [2020-10-28 14:29:33,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:32" (1/1) ... [2020-10-28 14:29:33,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:32" (1/1) ... [2020-10-28 14:29:33,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:32" (1/1) ... [2020-10-28 14:29:33,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:32" (1/1) ... [2020-10-28 14:29:33,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:32" (1/1) ... [2020-10-28 14:29:33,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:32" (1/1) ... [2020-10-28 14:29:33,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:29:33,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:29:33,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:29:33,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:29:33,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:32" (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 [2020-10-28 14:29:33,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:29:33,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:29:33,209 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:29:33,210 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:29:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:29:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:29:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:29:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:29:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 14:29:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:29:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:29:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:29:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:29:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:29:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:29:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:29:33,661 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:29:33,661 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 14:29:33,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:29:33 BoogieIcfgContainer [2020-10-28 14:29:33,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:29:33,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:29:33,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:29:33,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:29:33,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:29:32" (1/3) ... [2020-10-28 14:29:33,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5217944d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:29:33, skipping insertion in model container [2020-10-28 14:29:33,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:32" (2/3) ... [2020-10-28 14:29:33,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5217944d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:29:33, skipping insertion in model container [2020-10-28 14:29:33,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:29:33" (3/3) ... [2020-10-28 14:29:33,687 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i.p+cfa-reducer.c [2020-10-28 14:29:33,719 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:29:33,724 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:29:33,741 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:29:33,789 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:29:33,789 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:29:33,789 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:29:33,789 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:29:33,790 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:29:33,790 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:29:33,790 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:29:33,790 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:29:33,816 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-28 14:29:33,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-28 14:29:33,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:29:33,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:29:33,825 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:29:33,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:29:33,836 INFO L82 PathProgramCache]: Analyzing trace with hash -643733030, now seen corresponding path program 1 times [2020-10-28 14:29:33,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:29:33,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441012906] [2020-10-28 14:29:33,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:29:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:29:34,054 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:29:34,055 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:29:34,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:29:34,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:29:34 BoogieIcfgContainer [2020-10-28 14:29:34,079 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:29:34,085 INFO L168 Benchmark]: Toolchain (without parser) took 1400.02 ms. Allocated memory is still 151.0 MB. Free memory was 134.5 MB in the beginning and 112.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:34,088 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 124.4 MB in the end (delta: 76.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:29:34,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.40 ms. Allocated memory is still 151.0 MB. Free memory was 133.8 MB in the beginning and 124.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:34,092 INFO L168 Benchmark]: Boogie Preprocessor took 37.61 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 123.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:34,094 INFO L168 Benchmark]: RCFGBuilder took 635.74 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 123.7 MB in the end (delta: -409.7 kB). Peak memory consumption was 2.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:34,096 INFO L168 Benchmark]: TraceAbstraction took 410.94 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 112.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:34,106 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 124.4 MB in the end (delta: 76.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 297.40 ms. Allocated memory is still 151.0 MB. Free memory was 133.8 MB in the beginning and 124.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.61 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 123.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 635.74 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 123.7 MB in the end (delta: -409.7 kB). Peak memory consumption was 2.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 410.94 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 112.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L1] int __return_main; [L9] float main__x = 1.0; [L10] float main__x1 = main__x / 2.5; [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 [L25] COND TRUE __VERIFIER_assert__cond == 0 [L27] CALL reach_error() [L4] __assert_fail("0", "Float_div.i.p+cfa-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, 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...