/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/cast_union_loose.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:44:43,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:44:43,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:44:43,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:44:43,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:44:43,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:44:43,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:44:43,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:44:43,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:44:43,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:44:43,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:44:43,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:44:43,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:44:43,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:44:43,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:44:43,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:44:43,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:44:43,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:44:43,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:44:43,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:44:43,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:44:43,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:44:43,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:44:43,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:44:43,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 10:44:43,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:44:43,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:44:43,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:44:43,202 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 10:44:43,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:44:43,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:44:43,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:44:43,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:44:43,219 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:44:43,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:44:43,220 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:44:43,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:44:43,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:44:43,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:44:43,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:44:43,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:44:43,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:44:43,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:44:43,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:44:43,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:44:43,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:44:43,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:44:43,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:44:43,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:44:43,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:44:43,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:44:43,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:44:43,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:44:43,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:44:43,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:44:43,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:44:43,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:44:43,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:44:43,224 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 10:44:43,531 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:44:43,546 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:44:43,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:44:43,553 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:44:43,553 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:44:43,555 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/cast_union_loose.c [2020-07-20 10:44:43,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4d175482/8082dc0a0e67416e9dc185b9d21229a6/FLAG428a7f953 [2020-07-20 10:44:44,119 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:44:44,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/cast_union_loose.c [2020-07-20 10:44:44,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4d175482/8082dc0a0e67416e9dc185b9d21229a6/FLAG428a7f953 [2020-07-20 10:44:44,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4d175482/8082dc0a0e67416e9dc185b9d21229a6 [2020-07-20 10:44:44,491 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:44:44,493 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:44:44,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:44:44,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:44:44,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:44:44,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:44:44" (1/1) ... [2020-07-20 10:44:44,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ecad081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:44:44, skipping insertion in model container [2020-07-20 10:44:44,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:44:44" (1/1) ... [2020-07-20 10:44:44,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:44:44,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:44:44,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:44:44,728 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:44:44,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:44:44,854 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:44:44,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:44:44 WrapperNode [2020-07-20 10:44:44,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:44:44,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:44:44,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:44:44,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:44:44,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:44:44" (1/1) ... [2020-07-20 10:44:44,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:44:44" (1/1) ... [2020-07-20 10:44:44,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:44:44" (1/1) ... [2020-07-20 10:44:44,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:44:44" (1/1) ... [2020-07-20 10:44:44,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:44:44" (1/1) ... [2020-07-20 10:44:44,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:44:44" (1/1) ... [2020-07-20 10:44:44,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:44:44" (1/1) ... [2020-07-20 10:44:44,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:44:44,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:44:44,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:44:44,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:44:44,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:44:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 10:44:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:44:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:44:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 10:44:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 10:44:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2020-07-20 10:44:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:44:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:44:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 10:44:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 10:44:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 10:44:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 10:44:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2020-07-20 10:44:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:44:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:44:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:44:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 10:44:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:44:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:44:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:44:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:44:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 10:44:45,207 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:44:45,207 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 10:44:45,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:44:45 BoogieIcfgContainer [2020-07-20 10:44:45,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:44:45,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:44:45,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:44:45,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:44:45,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:44:44" (1/3) ... [2020-07-20 10:44:45,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a34f5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:44:45, skipping insertion in model container [2020-07-20 10:44:45,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:44:44" (2/3) ... [2020-07-20 10:44:45,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a34f5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:44:45, skipping insertion in model container [2020-07-20 10:44:45,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:44:45" (3/3) ... [2020-07-20 10:44:45,221 INFO L109 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2020-07-20 10:44:45,233 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:44:45,241 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:44:45,264 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:44:45,294 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:44:45,294 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:44:45,294 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:44:45,294 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:44:45,294 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:44:45,295 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:44:45,295 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:44:45,295 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:44:45,316 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-20 10:44:45,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 10:44:45,323 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:44:45,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:44:45,325 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:44:45,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:44:45,333 INFO L82 PathProgramCache]: Analyzing trace with hash -78739841, now seen corresponding path program 1 times [2020-07-20 10:44:45,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:44:45,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020888279] [2020-07-20 10:44:45,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:44:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:44:45,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:44:45,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:44:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:44:45,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:44:45,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020888279] [2020-07-20 10:44:45,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:44:45,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:44:45,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616049677] [2020-07-20 10:44:45,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:44:45,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:44:45,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:44:45,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:44:45,499 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-07-20 10:44:45,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:44:45,524 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-07-20 10:44:45,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:44:45,526 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2020-07-20 10:44:45,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:44:45,535 INFO L225 Difference]: With dead ends: 47 [2020-07-20 10:44:45,535 INFO L226 Difference]: Without dead ends: 21 [2020-07-20 10:44:45,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:44:45,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-20 10:44:45,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-20 10:44:45,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-20 10:44:45,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2020-07-20 10:44:45,582 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 20 [2020-07-20 10:44:45,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:44:45,582 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2020-07-20 10:44:45,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:44:45,583 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2020-07-20 10:44:45,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 10:44:45,584 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:44:45,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:44:45,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:44:45,799 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:44:45,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:44:45,800 INFO L82 PathProgramCache]: Analyzing trace with hash 179425597, now seen corresponding path program 1 times [2020-07-20 10:44:45,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:44:45,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980912169] [2020-07-20 10:44:45,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:44:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:44:45,883 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:44:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:44:45,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:44:45,926 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:44:45,927 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:44:46,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:44:46,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:44:46 BoogieIcfgContainer [2020-07-20 10:44:46,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:44:46,173 INFO L168 Benchmark]: Toolchain (without parser) took 1679.35 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 100.8 MB in the beginning and 122.1 MB in the end (delta: -21.3 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2020-07-20 10:44:46,174 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 136.8 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 10:44:46,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.77 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 100.6 MB in the beginning and 178.8 MB in the end (delta: -78.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-07-20 10:44:46,176 INFO L168 Benchmark]: Boogie Preprocessor took 38.98 ms. Allocated memory is still 199.8 MB. Free memory was 178.8 MB in the beginning and 176.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-20 10:44:46,177 INFO L168 Benchmark]: RCFGBuilder took 316.02 ms. Allocated memory is still 199.8 MB. Free memory was 176.4 MB in the beginning and 160.5 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2020-07-20 10:44:46,178 INFO L168 Benchmark]: TraceAbstraction took 957.21 ms. Allocated memory is still 199.8 MB. Free memory was 159.8 MB in the beginning and 122.1 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 7.1 GB. [2020-07-20 10:44:46,183 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 136.8 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 360.77 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 100.6 MB in the beginning and 178.8 MB in the end (delta: -78.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.98 ms. Allocated memory is still 199.8 MB. Free memory was 178.8 MB in the beginning and 176.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 316.02 ms. Allocated memory is still 199.8 MB. Free memory was 176.4 MB in the beginning and 160.5 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 957.21 ms. Allocated memory is still 199.8 MB. Free memory was 159.8 MB in the beginning and 122.1 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 11]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 37, overapproximation of someBinaryArithmeticDOUBLEoperation at line 25, overapproximation of bitwiseXor at line 24. Possible FailurePath: [L30] int a; [L31] double r; [L33] a = __VERIFIER_nondet_int() [L34] CALL assume_abort_if_not(a >= -10000 && a <= 10000) VAL [\old(cond)=1] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L34] RET assume_abort_if_not(a >= -10000 && a <= 10000) VAL [a=0] [L36] CALL, EXPR cast(a) VAL [\old(i)=0] [L20] union u x, y; [L21] x.i[0] = 0x43300000 [L22] EXPR x.i[0] [L22] y.i[0] = x.i[0] [L23] x.i[1] = 0x80000000 [L24] EXPR x.i[1] [L24] y.i[1] = i ^ x.i[1] [L25] EXPR y.d [L25] EXPR x.d [L25] return y.d - x.d; [L25] return y.d - x.d; [L25] return y.d - x.d; VAL [\old(i)=0, i=0] [L36] RET, EXPR cast(a) VAL [a=0, cast(a)=13] [L36] r = cast(a) [L37] CALL __VERIFIER_assert(r >= -10000. && r <= 10000.) VAL [\old(cond)=0] [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L11] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 84 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...