/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/addsub_float_exact.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:27:29,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:27:29,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:27:29,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:27:29,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:27:29,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:27:29,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:27:29,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:27:29,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:27:29,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:27:29,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:27:29,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:27:29,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:27:29,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:27:29,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:27:29,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:27:29,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:27:29,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:27:29,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:27:29,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:27:29,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:27:29,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:27:29,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:27:29,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:27:29,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:27:29,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:27:29,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:27:29,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:27:29,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:27:29,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:27:29,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:27:29,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:27:29,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:27:29,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:27:29,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:27:29,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:27:29,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:27:29,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:27:29,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:27:29,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:27:29,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:27:29,143 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 14:27:29,192 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:27:29,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:27:29,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:27:29,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:27:29,195 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:27:29,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:27:29,196 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:27:29,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:27:29,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:27:29,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:27:29,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:27:29,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:27:29,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:27:29,199 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:27:29,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:27:29,199 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:27:29,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:27:29,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:27:29,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:27:29,200 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:27:29,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:27:29,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:27:29,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:27:29,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:27:29,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:27:29,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:27:29,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:27:29,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:27:29,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:27:29,202 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:27:29,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:27:29,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:27:29,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:27:29,684 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:27:29,685 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:27:29,686 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/addsub_float_exact.c [2020-09-25 14:27:29,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f9471d13/be5b822918fe49fa9534101d3373672b/FLAGcac21c49e [2020-09-25 14:27:30,316 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:27:30,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/addsub_float_exact.c [2020-09-25 14:27:30,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f9471d13/be5b822918fe49fa9534101d3373672b/FLAGcac21c49e [2020-09-25 14:27:30,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f9471d13/be5b822918fe49fa9534101d3373672b [2020-09-25 14:27:30,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:27:30,711 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:27:30,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:27:30,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:27:30,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:27:30,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:27:30" (1/1) ... [2020-09-25 14:27:30,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dbe4ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:30, skipping insertion in model container [2020-09-25 14:27:30,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:27:30" (1/1) ... [2020-09-25 14:27:30,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:27:30,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:27:30,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:27:30,973 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:27:30,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:27:31,006 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:27:31,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:31 WrapperNode [2020-09-25 14:27:31,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:27:31,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:27:31,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:27:31,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:27:31,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:31" (1/1) ... [2020-09-25 14:27:31,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:31" (1/1) ... [2020-09-25 14:27:31,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:31" (1/1) ... [2020-09-25 14:27:31,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:31" (1/1) ... [2020-09-25 14:27:31,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:31" (1/1) ... [2020-09-25 14:27:31,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:31" (1/1) ... [2020-09-25 14:27:31,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:31" (1/1) ... [2020-09-25 14:27:31,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:27:31,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:27:31,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:27:31,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:27:31,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:31" (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 14:27:31,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:27:31,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:27:31,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 14:27:31,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:27:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:27:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 14:27:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:27:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:27:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:27:31,374 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:27:31,375 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:27:31,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:27:31 BoogieIcfgContainer [2020-09-25 14:27:31,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:27:31,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:27:31,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:27:31,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:27:31,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:27:30" (1/3) ... [2020-09-25 14:27:31,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247147b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:27:31, skipping insertion in model container [2020-09-25 14:27:31,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:27:31" (2/3) ... [2020-09-25 14:27:31,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247147b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:27:31, skipping insertion in model container [2020-09-25 14:27:31,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:27:31" (3/3) ... [2020-09-25 14:27:31,389 INFO L109 eAbstractionObserver]: Analyzing ICFG addsub_float_exact.c [2020-09-25 14:27:31,401 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:27:31,410 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:27:31,431 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:27:31,457 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:27:31,457 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:27:31,457 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:27:31,457 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:27:31,458 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:27:31,458 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:27:31,458 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:27:31,458 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:27:31,479 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-25 14:27:31,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 14:27:31,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:27:31,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:27:31,487 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:27:31,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:27:31,493 INFO L82 PathProgramCache]: Analyzing trace with hash 501478975, now seen corresponding path program 1 times [2020-09-25 14:27:31,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:27:31,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393342815] [2020-09-25 14:27:31,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:27:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:27:31,611 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:27:31,612 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:27:31,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:27:31,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:27:31 BoogieIcfgContainer [2020-09-25 14:27:31,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:27:31,638 INFO L168 Benchmark]: Toolchain (without parser) took 930.09 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 102.3 MB in the beginning and 159.3 MB in the end (delta: -56.9 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2020-09-25 14:27:31,640 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 14:27:31,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.88 ms. Allocated memory is still 141.0 MB. Free memory was 101.7 MB in the beginning and 92.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:27:31,642 INFO L168 Benchmark]: Boogie Preprocessor took 105.75 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 92.4 MB in the beginning and 182.6 MB in the end (delta: -90.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-25 14:27:31,643 INFO L168 Benchmark]: RCFGBuilder took 265.45 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 170.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-09-25 14:27:31,644 INFO L168 Benchmark]: TraceAbstraction took 253.54 ms. Allocated memory is still 203.4 MB. Free memory was 170.4 MB in the beginning and 159.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-09-25 14:27:31,649 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 295.88 ms. Allocated memory is still 141.0 MB. Free memory was 101.7 MB in the beginning and 92.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.75 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 92.4 MB in the beginning and 182.6 MB in the end (delta: -90.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 265.45 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 170.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253.54 ms. Allocated memory is still 203.4 MB. Free memory was 170.4 MB in the beginning and 159.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 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 14, overapproximation of someBinaryArithmeticFLOAToperation at line 13. Possible FailurePath: [L8] float x, y, z, r; [L10] x = 1e7f [L11] y = x + 1.f [L12] z = x - 1.f [L13] r = y - z [L14] CALL __VERIFIER_assert(r == 2.f) [L4] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 16 NumberOfCodeBlocks, 16 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...