/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=BIGGEST --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/floats-cbmc-regression/float13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:33:30,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:33:30,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:33:30,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:33:30,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:33:30,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:33:30,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:33:30,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:33:30,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:33:30,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:33:30,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:33:30,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:33:30,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:33:30,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:33:30,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:33:30,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:33:30,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:33:30,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:33:30,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:33:30,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:33:30,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:33:30,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:33:30,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:33:30,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:33:30,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:33:30,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:33:30,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:33:30,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:33:30,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:33:30,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:33:30,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:33:30,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:33:30,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:33:30,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:33:30,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:33:30,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:33:30,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:33:30,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:33:30,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:33:30,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:33:30,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:33:30,149 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 [2020-10-12 15:33:30,186 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:33:30,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:33:30,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:33:30,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:33:30,188 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:33:30,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:33:30,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:33:30,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:33:30,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:33:30,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:33:30,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:33:30,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:33:30,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:33:30,190 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:33:30,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:33:30,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:33:30,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:33:30,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:33:30,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:33:30,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:33:30,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:33:30,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:33:30,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:33:30,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:33:30,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:33:30,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:33:30,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:33:30,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:33:30,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:33:30,193 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:33:30,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:33:30,536 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:33:30,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:33:30,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:33:30,542 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:33:30,542 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float13.c [2020-10-12 15:33:30,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5ffa2d72/70bdae6320c84dd68995ca2f3d3cb430/FLAGeb4555564 [2020-10-12 15:33:31,064 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:33:31,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float13.c [2020-10-12 15:33:31,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5ffa2d72/70bdae6320c84dd68995ca2f3d3cb430/FLAGeb4555564 [2020-10-12 15:33:31,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5ffa2d72/70bdae6320c84dd68995ca2f3d3cb430 [2020-10-12 15:33:31,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:33:31,450 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:33:31,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:33:31,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:33:31,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:33:31,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:33:31" (1/1) ... [2020-10-12 15:33:31,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb1485c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:33:31, skipping insertion in model container [2020-10-12 15:33:31,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:33:31" (1/1) ... [2020-10-12 15:33:31,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:33:31,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:33:31,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:33:31,644 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:33:31,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:33:31,671 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:33:31,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:33:31 WrapperNode [2020-10-12 15:33:31,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:33:31,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:33:31,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:33:31,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:33:31,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:33:31" (1/1) ... [2020-10-12 15:33:31,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:33:31" (1/1) ... [2020-10-12 15:33:31,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:33:31" (1/1) ... [2020-10-12 15:33:31,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:33:31" (1/1) ... [2020-10-12 15:33:31,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:33:31" (1/1) ... [2020-10-12 15:33:31,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:33:31" (1/1) ... [2020-10-12 15:33:31,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:33:31" (1/1) ... [2020-10-12 15:33:31,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:33:31,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:33:31,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:33:31,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:33:31,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:33:31" (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 [2020-10-12 15:33:31,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:33:31,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:33:31,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:33:31,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:33:31,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:33:31,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:33:31,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:33:32,050 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:33:32,050 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 15:33:32,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:33:32 BoogieIcfgContainer [2020-10-12 15:33:32,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:33:32,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:33:32,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:33:32,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:33:32,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:33:31" (1/3) ... [2020-10-12 15:33:32,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60493116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:33:32, skipping insertion in model container [2020-10-12 15:33:32,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:33:31" (2/3) ... [2020-10-12 15:33:32,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60493116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:33:32, skipping insertion in model container [2020-10-12 15:33:32,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:33:32" (3/3) ... [2020-10-12 15:33:32,063 INFO L109 eAbstractionObserver]: Analyzing ICFG float13.c [2020-10-12 15:33:32,075 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:33:32,086 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-10-12 15:33:32,121 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-12 15:33:32,151 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:33:32,151 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:33:32,151 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:33:32,151 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:33:32,151 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:33:32,152 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:33:32,152 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:33:32,152 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:33:32,176 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-12 15:33:32,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-12 15:33:32,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:33:32,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:33:32,192 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:33:32,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:33:32,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1459462506, now seen corresponding path program 1 times [2020-10-12 15:33:32,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:33:32,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722918236] [2020-10-12 15:33:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:33:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:33:32,310 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:33:32,311 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:33:32,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:33:32,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:33:32 BoogieIcfgContainer [2020-10-12 15:33:32,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:33:32,334 INFO L168 Benchmark]: Toolchain (without parser) took 883.13 ms. Allocated memory was 150.5 MB in the beginning and 206.0 MB in the end (delta: 55.6 MB). Free memory was 106.3 MB in the beginning and 157.6 MB in the end (delta: -51.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:33:32,336 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 150.5 MB. Free memory was 125.0 MB in the beginning and 124.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 15:33:32,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.87 ms. Allocated memory is still 150.5 MB. Free memory was 106.1 MB in the beginning and 96.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-10-12 15:33:32,338 INFO L168 Benchmark]: Boogie Preprocessor took 109.13 ms. Allocated memory was 150.5 MB in the beginning and 206.0 MB in the end (delta: 55.6 MB). Free memory was 96.2 MB in the beginning and 184.4 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-12 15:33:32,339 INFO L168 Benchmark]: RCFGBuilder took 273.56 ms. Allocated memory is still 206.0 MB. Free memory was 184.4 MB in the beginning and 170.3 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-10-12 15:33:32,340 INFO L168 Benchmark]: TraceAbstraction took 275.09 ms. Allocated memory is still 206.0 MB. Free memory was 169.7 MB in the beginning and 157.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-10-12 15:33:32,344 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 150.5 MB. Free memory was 125.0 MB in the beginning and 124.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 219.87 ms. Allocated memory is still 150.5 MB. Free memory was 106.1 MB in the beginning and 96.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.13 ms. Allocated memory was 150.5 MB in the beginning and 206.0 MB in the end (delta: 55.6 MB). Free memory was 96.2 MB in the beginning and 184.4 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 273.56 ms. Allocated memory is still 206.0 MB. Free memory was 184.4 MB in the beginning and 170.3 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 275.09 ms. Allocated memory is still 206.0 MB. Free memory was 169.7 MB in the beginning and 157.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: 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 someBinaryArithmeticFLOAToperation at line 3. Possible FailurePath: [L3] const float plus_infinity = 1.0f/0.0f; [L4] const float minus_infinity = 0.0f/-0.0f; [L5] const float NaN = 0.0f * (1.0f/0.0f); [L9] _Bool temp; [L12] temp = NaN < plus_infinity [L13] COND TRUE !(!temp) [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 42 locations, 8 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=42occurred 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, 8 NumberOfCodeBlocks, 8 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...