/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/addsub_float_inexact.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:14:14,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:14:14,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:14:14,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:14:14,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:14:14,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:14:14,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:14:14,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:14:14,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:14:14,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:14:14,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:14:14,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:14:14,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:14:14,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:14:14,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:14:14,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:14:14,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:14:14,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:14:14,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:14:14,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:14:14,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:14:14,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:14:14,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:14:14,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:14:14,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:14:14,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:14:14,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:14:14,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:14:14,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:14:14,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:14:14,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:14:14,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:14:14,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:14:14,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:14:14,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:14:14,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:14:14,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:14:14,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:14:14,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:14:14,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:14:14,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:14:14,191 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 10:14:14,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:14:14,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:14:14,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:14:14,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:14:14,239 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:14:14,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:14:14,239 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:14:14,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:14:14,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:14:14,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:14:14,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:14:14,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:14:14,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:14:14,241 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:14:14,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:14:14,242 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:14:14,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:14:14,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:14:14,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:14:14,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:14:14,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:14:14,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:14:14,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:14:14,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:14:14,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:14:14,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:14:14,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:14:14,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:14:14,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:14:14,245 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 10:14:14,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:14:14,574 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:14:14,577 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:14:14,579 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:14:14,579 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:14:14,582 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/addsub_float_inexact.c [2020-10-13 10:14:14,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5299a6670/504f50775aae484e92795459e1266c58/FLAGd687646a7 [2020-10-13 10:14:15,049 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:14:15,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/addsub_float_inexact.c [2020-10-13 10:14:15,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5299a6670/504f50775aae484e92795459e1266c58/FLAGd687646a7 [2020-10-13 10:14:15,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5299a6670/504f50775aae484e92795459e1266c58 [2020-10-13 10:14:15,443 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:14:15,444 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:14:15,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:14:15,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:14:15,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:14:15,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:14:15" (1/1) ... [2020-10-13 10:14:15,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cd0480f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:15, skipping insertion in model container [2020-10-13 10:14:15,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:14:15" (1/1) ... [2020-10-13 10:14:15,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:14:15,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:14:15,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:14:15,685 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:14:15,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:14:15,715 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:14:15,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:15 WrapperNode [2020-10-13 10:14:15,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:14:15,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:14:15,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:14:15,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:14:15,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:15" (1/1) ... [2020-10-13 10:14:15,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:15" (1/1) ... [2020-10-13 10:14:15,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:15" (1/1) ... [2020-10-13 10:14:15,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:15" (1/1) ... [2020-10-13 10:14:15,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:15" (1/1) ... [2020-10-13 10:14:15,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:15" (1/1) ... [2020-10-13 10:14:15,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:15" (1/1) ... [2020-10-13 10:14:15,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:14:15,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:14:15,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:14:15,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:14:15,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:15" (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 10:14:15,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:14:15,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:14:15,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 10:14:15,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:14:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:14:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 10:14:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:14:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:14:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:14:16,088 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:14:16,088 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 10:14:16,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:14:16 BoogieIcfgContainer [2020-10-13 10:14:16,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:14:16,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:14:16,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:14:16,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:14:16,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:14:15" (1/3) ... [2020-10-13 10:14:16,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15569944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:14:16, skipping insertion in model container [2020-10-13 10:14:16,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:15" (2/3) ... [2020-10-13 10:14:16,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15569944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:14:16, skipping insertion in model container [2020-10-13 10:14:16,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:14:16" (3/3) ... [2020-10-13 10:14:16,102 INFO L109 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact.c [2020-10-13 10:14:16,114 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:14:16,120 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:14:16,135 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:14:16,166 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:14:16,166 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:14:16,166 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:14:16,167 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:14:16,167 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:14:16,168 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:14:16,168 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:14:16,168 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:14:16,191 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-10-13 10:14:16,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-13 10:14:16,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:14:16,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:14:16,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:14:16,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:14:16,205 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2020-10-13 10:14:16,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:14:16,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445272611] [2020-10-13 10:14:16,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:14:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:14:16,317 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:14:16,318 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:14:16,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:14:16,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:14:16 BoogieIcfgContainer [2020-10-13 10:14:16,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:14:16,337 INFO L168 Benchmark]: Toolchain (without parser) took 890.95 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 104.2 MB in the beginning and 160.4 MB in the end (delta: -56.2 MB). Peak memory consumption was 6.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:14:16,338 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:14:16,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.68 ms. Allocated memory is still 140.5 MB. Free memory was 103.8 MB in the beginning and 94.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:14:16,340 INFO L168 Benchmark]: Boogie Preprocessor took 29.31 ms. Allocated memory is still 140.5 MB. Free memory was 94.6 MB in the beginning and 93.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:14:16,341 INFO L168 Benchmark]: RCFGBuilder took 346.63 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.0 MB in the beginning and 172.1 MB in the end (delta: -79.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:14:16,342 INFO L168 Benchmark]: TraceAbstraction took 239.85 ms. Allocated memory is still 203.4 MB. Free memory was 171.4 MB in the beginning and 160.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:14:16,346 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 270.68 ms. Allocated memory is still 140.5 MB. Free memory was 103.8 MB in the beginning and 94.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.31 ms. Allocated memory is still 140.5 MB. Free memory was 94.6 MB in the beginning and 93.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 346.63 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.0 MB in the beginning and 172.1 MB in the end (delta: -79.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239.85 ms. Allocated memory is still 203.4 MB. Free memory was 171.4 MB in the beginning and 160.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 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 11. Possible FailurePath: [L8] float x, y, z, r; [L10] x = 1e8f [L11] y = x + 1.f [L12] z = x - 1.f [L13] r = y - z [L14] CALL __VERIFIER_assert(r == 0.f) [L4] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 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=17occurred 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, 9 NumberOfCodeBlocks, 9 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...