/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 SingleStatement --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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:23:59,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:23:59,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:23:59,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:23:59,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:23:59,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:23:59,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:23:59,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:23:59,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:23:59,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:23:59,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:23:59,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:23:59,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:23:59,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:23:59,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:23:59,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:23:59,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:23:59,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:23:59,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:23:59,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:23:59,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:23:59,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:23:59,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:23:59,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:23:59,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:23:59,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:23:59,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:23:59,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:23:59,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:23:59,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:23:59,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:23:59,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:23:59,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:23:59,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:23:59,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:23:59,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:23:59,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:23:59,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:23:59,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:23:59,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:23:59,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:23:59,193 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 [2020-09-25 05:23:59,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:23:59,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:23:59,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:23:59,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:23:59,221 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:23:59,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:23:59,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:23:59,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:23:59,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:23:59,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:23:59,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:23:59,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:23:59,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:23:59,222 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:23:59,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:23:59,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:23:59,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:23:59,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:23:59,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:23:59,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:23:59,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:23:59,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:23:59,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:23:59,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:23:59,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:23:59,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:23:59,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:23:59,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:23:59,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:23:59,226 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 -> SingleStatement 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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=true; [2020-09-25 05:23:59,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:23:59,690 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:23:59,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:23:59,697 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:23:59,699 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:23:59,700 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp6.c [2020-09-25 05:23:59,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bc98c66e/0280c9dc93b74279a6a2b6a6731a705a/FLAG941ededa1 [2020-09-25 05:24:00,285 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:24:00,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float-no-simp6.c [2020-09-25 05:24:00,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bc98c66e/0280c9dc93b74279a6a2b6a6731a705a/FLAG941ededa1 [2020-09-25 05:24:00,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bc98c66e/0280c9dc93b74279a6a2b6a6731a705a [2020-09-25 05:24:00,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:24:00,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:24:00,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:24:00,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:24:00,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:24:00,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:24:00" (1/1) ... [2020-09-25 05:24:00,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d4521a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:00, skipping insertion in model container [2020-09-25 05:24:00,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:24:00" (1/1) ... [2020-09-25 05:24:00,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:24:00,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:24:00,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:24:00,949 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:24:00,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:24:01,003 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:24:01,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:01 WrapperNode [2020-09-25 05:24:01,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:24:01,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:24:01,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:24:01,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:24:01,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:01" (1/1) ... [2020-09-25 05:24:01,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:01" (1/1) ... [2020-09-25 05:24:01,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:01" (1/1) ... [2020-09-25 05:24:01,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:01" (1/1) ... [2020-09-25 05:24:01,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:01" (1/1) ... [2020-09-25 05:24:01,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:01" (1/1) ... [2020-09-25 05:24:01,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:01" (1/1) ... [2020-09-25 05:24:01,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:24:01,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:24:01,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:24:01,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:24:01,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:01" (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 [2020-09-25 05:24:01,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:24:01,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:24:01,177 INFO L138 BoogieDeclarations]: Found implementation of procedure multiply [2020-09-25 05:24:01,177 INFO L138 BoogieDeclarations]: Found implementation of procedure divide [2020-09-25 05:24:01,178 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2020-09-25 05:24:01,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:24:01,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:24:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure multiply [2020-09-25 05:24:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure divide [2020-09-25 05:24:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2020-09-25 05:24:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:24:01,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:24:01,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:24:01,379 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:24:01,379 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:24:01,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:24:01 BoogieIcfgContainer [2020-09-25 05:24:01,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:24:01,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:24:01,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:24:01,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:24:01,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:24:00" (1/3) ... [2020-09-25 05:24:01,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165407de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:24:01, skipping insertion in model container [2020-09-25 05:24:01,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:01" (2/3) ... [2020-09-25 05:24:01,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165407de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:24:01, skipping insertion in model container [2020-09-25 05:24:01,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:24:01" (3/3) ... [2020-09-25 05:24:01,402 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2020-09-25 05:24:01,411 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:24:01,420 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-25 05:24:01,441 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-25 05:24:01,471 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:24:01,471 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:24:01,471 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:24:01,472 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:24:01,472 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:24:01,472 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:24:01,472 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:24:01,472 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:24:01,493 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-25 05:24:01,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-25 05:24:01,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:24:01,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:24:01,500 INFO L427 AbstractCegarLoop]: === Iteration 1 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:24:01,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:24:01,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1968128724, now seen corresponding path program 1 times [2020-09-25 05:24:01,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:24:01,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707098583] [2020-09-25 05:24:01,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:24:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 05:24:01,613 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 05:24:01,614 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 05:24:01,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:24:01,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:24:01 BoogieIcfgContainer [2020-09-25 05:24:01,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:24:01,637 INFO L168 Benchmark]: Toolchain (without parser) took 987.32 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 103.1 MB in the beginning and 157.1 MB in the end (delta: -54.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:01,638 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 05:24:01,639 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.38 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 90.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:01,640 INFO L168 Benchmark]: Boogie Preprocessor took 106.73 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 90.6 MB in the beginning and 181.0 MB in the end (delta: -90.3 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:01,641 INFO L168 Benchmark]: RCFGBuilder took 272.69 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 168.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:01,642 INFO L168 Benchmark]: TraceAbstraction took 247.77 ms. Allocated memory is still 201.9 MB. Free memory was 168.0 MB in the beginning and 157.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:01,647 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 347.38 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 90.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.73 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 90.6 MB in the beginning and 181.0 MB in the end (delta: -90.3 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 272.69 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 168.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 247.77 ms. Allocated memory is still 201.9 MB. Free memory was 168.0 MB in the beginning and 157.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 23]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L47] CALL multiply() [L18] float f1=0x1.000000p-1f; [L19] float f2=0x1.fffffep-126f; [L21] float res = f1 * f2; [L23] COND TRUE !(res == 0x1.0p-126f) [L23] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 locations, 3 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=34occurred 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...