/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:42:06,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:42:06,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:42:06,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:42:06,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:42:06,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:42:06,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:42:06,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:42:06,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:42:06,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:42:06,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:42:06,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:42:06,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:42:06,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:42:06,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:42:06,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:42:06,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:42:06,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:42:06,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:42:06,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:42:06,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:42:06,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:42:06,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:42:06,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:42:06,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:42:06,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:42:06,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:42:06,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:42:06,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:42:06,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:42:06,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:42:06,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:42:06,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:42:06,992 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:42:06,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:42:06,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:42:06,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:42:06,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:42:06,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:42:06,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:42:06,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:42:06,995 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:42:06,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:42:06,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:42:06,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:42:06,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:42:06,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:42:06,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:42:06,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:42:06,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:42:06,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:42:06,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:42:06,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:42:06,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:42:06,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:42:07,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:42:07,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:42:07,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:42:07,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:42:07,408 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:42:07,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2020-12-22 03:42:07,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44f69fd21/7853a3c0b62b470f965e1ef4f8d53054/FLAG038f7801f [2020-12-22 03:42:08,192 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:42:08,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2020-12-22 03:42:08,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44f69fd21/7853a3c0b62b470f965e1ef4f8d53054/FLAG038f7801f [2020-12-22 03:42:08,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44f69fd21/7853a3c0b62b470f965e1ef4f8d53054 [2020-12-22 03:42:08,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:42:08,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:42:08,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:42:08,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:42:08,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:42:08,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:42:08" (1/1) ... [2020-12-22 03:42:08,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72065869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:08, skipping insertion in model container [2020-12-22 03:42:08,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:42:08" (1/1) ... [2020-12-22 03:42:08,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:42:08,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:42:08,757 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2020-12-22 03:42:08,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:42:08,775 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:42:08,811 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2020-12-22 03:42:08,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:42:08,833 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:42:08,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:08 WrapperNode [2020-12-22 03:42:08,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:42:08,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:42:08,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:42:08,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:42:08,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:08" (1/1) ... [2020-12-22 03:42:08,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:08" (1/1) ... [2020-12-22 03:42:08,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:42:08,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:42:08,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:42:08,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:42:08,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:08" (1/1) ... [2020-12-22 03:42:08,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:08" (1/1) ... [2020-12-22 03:42:08,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:08" (1/1) ... [2020-12-22 03:42:08,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:08" (1/1) ... [2020-12-22 03:42:08,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:08" (1/1) ... [2020-12-22 03:42:08,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:08" (1/1) ... [2020-12-22 03:42:08,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:08" (1/1) ... [2020-12-22 03:42:08,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:42:08,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:42:08,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:42:08,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:42:08,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:08" (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 [2020-12-22 03:42:08,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:42:08,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:42:08,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:42:08,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:42:09,291 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:42:09,291 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 03:42:09,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:42:09 BoogieIcfgContainer [2020-12-22 03:42:09,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:42:09,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:42:09,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:42:09,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:42:09,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:42:08" (1/3) ... [2020-12-22 03:42:09,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ed9ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:42:09, skipping insertion in model container [2020-12-22 03:42:09,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:08" (2/3) ... [2020-12-22 03:42:09,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ed9ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:42:09, skipping insertion in model container [2020-12-22 03:42:09,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:42:09" (3/3) ... [2020-12-22 03:42:09,320 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.p+cfa-reducer.c [2020-12-22 03:42:09,326 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:42:09,331 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:42:09,354 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:42:09,404 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:42:09,407 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:42:09,407 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:42:09,407 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:42:09,408 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:42:09,408 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:42:09,408 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:42:09,408 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:42:09,432 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-12-22 03:42:09,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 03:42:09,441 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:42:09,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:42:09,442 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:42:09,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:42:09,451 INFO L82 PathProgramCache]: Analyzing trace with hash -34829450, now seen corresponding path program 1 times [2020-12-22 03:42:09,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:42:09,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405961020] [2020-12-22 03:42:09,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:42:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:42:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:42:09,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405961020] [2020-12-22 03:42:09,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:42:09,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 03:42:09,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586671580] [2020-12-22 03:42:09,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 03:42:09,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:42:09,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 03:42:09,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:42:09,817 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-12-22 03:42:10,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:42:10,021 INFO L93 Difference]: Finished difference Result 115 states and 167 transitions. [2020-12-22 03:42:10,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 03:42:10,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-22 03:42:10,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:42:10,034 INFO L225 Difference]: With dead ends: 115 [2020-12-22 03:42:10,034 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 03:42:10,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 03:42:10,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 03:42:10,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 23. [2020-12-22 03:42:10,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 03:42:10,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-12-22 03:42:10,077 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 16 [2020-12-22 03:42:10,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:42:10,078 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-12-22 03:42:10,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 03:42:10,078 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-12-22 03:42:10,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 03:42:10,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:42:10,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:42:10,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:42:10,080 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:42:10,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:42:10,081 INFO L82 PathProgramCache]: Analyzing trace with hash -17818789, now seen corresponding path program 1 times [2020-12-22 03:42:10,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:42:10,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264171532] [2020-12-22 03:42:10,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:42:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:42:10,104 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:42:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:42:10,119 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:42:10,143 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:42:10,143 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:42:10,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:42:10,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:42:10 BoogieIcfgContainer [2020-12-22 03:42:10,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:42:10,187 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:42:10,187 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:42:10,188 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:42:10,188 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:42:09" (3/4) ... [2020-12-22 03:42:10,192 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:42:10,192 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:42:10,195 INFO L168 Benchmark]: Toolchain (without parser) took 1628.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 97.0 MB in the end (delta: 29.8 MB). Peak memory consumption was 29.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:42:10,195 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:42:10,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.16 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 116.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 03:42:10,197 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.80 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:42:10,198 INFO L168 Benchmark]: Boogie Preprocessor took 23.30 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 113.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:42:10,199 INFO L168 Benchmark]: RCFGBuilder took 396.94 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 133.2 MB in the end (delta: -19.5 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:42:10,200 INFO L168 Benchmark]: TraceAbstraction took 891.48 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 97.6 MB in the end (delta: 35.1 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:42:10,201 INFO L168 Benchmark]: Witness Printer took 4.85 ms. Allocated memory is still 151.0 MB. Free memory was 97.6 MB in the beginning and 97.0 MB in the end (delta: 512.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:42:10,207 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 267.16 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 116.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 36.80 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.30 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 113.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 396.94 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 133.2 MB in the end (delta: -19.5 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 891.48 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 97.6 MB in the end (delta: 35.1 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. * Witness Printer took 4.85 ms. Allocated memory is still 151.0 MB. Free memory was 97.6 MB in the beginning and 97.0 MB in the end (delta: 512.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 66]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 48, overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of to_real at line 20, overapproximation of someBinaryArithmeticFLOAToperation at line 50. Possible FailurePath: [L1] int __return_main; VAL [__return_main=0] [L14] float main__X; [L15] float main__Y; [L16] float main__S; [L17] float main__R; [L18] float main__D; [L19] int main__i; [L20] main__Y = 0 [L21] main__i = 0 VAL [__return_main=0] [L23] COND TRUE main__i < 100000 [L25] main__X = __VERIFIER_nondet_float() [L26] main__D = __VERIFIER_nondet_float() [L27] int main____CPAchecker_TMP_0; VAL [__return_main=0] [L28] COND TRUE main__X >= -128.0 VAL [__return_main=0] [L30] COND TRUE main__X <= 128.0 [L32] main____CPAchecker_TMP_0 = 1 VAL [__return_main=0] [L34] COND TRUE main____CPAchecker_TMP_0 != 0 [L36] int main____CPAchecker_TMP_1; VAL [__return_main=0] [L37] COND TRUE main__D >= 0.0 VAL [__return_main=0] [L39] COND TRUE main__D <= 16.0 [L41] main____CPAchecker_TMP_1 = 1 VAL [__return_main=0] [L43] COND TRUE main____CPAchecker_TMP_1 != 0 [L45] main__S = main__Y [L46] main__Y = main__X [L47] main__R = main__X - main__S VAL [__return_main=0] [L48] COND TRUE main__R <= (-main__D) [L50] main__Y = main__S - main__D VAL [__return_main=0] [L52] int main____CPAchecker_TMP_2; VAL [__return_main=0] [L53] COND FALSE !(main__Y >= -129.0) VAL [__return_main=0] [L79] main____CPAchecker_TMP_2 = 0 VAL [__return_main=0] [L60] int __tmp_1; [L61] __tmp_1 = main____CPAchecker_TMP_2 [L62] int __VERIFIER_assert__cond; [L63] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0] [L64] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0] [L66] reach_error() VAL [__return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 162 SDslu, 134 SDs, 0 SdLazy, 31 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 69 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 345 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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...