/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/filter2_reinit.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:01:04,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:01:04,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:01:04,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:01:04,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:01:04,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:01:04,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:01:04,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:01:04,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:01:04,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:01:04,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:01:04,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:01:04,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:01:04,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:01:04,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:01:04,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:01:04,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:01:04,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:01:04,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:01:04,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:01:04,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:01:04,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:01:04,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:01:04,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:01:04,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:01:04,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:01:04,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:01:04,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:01:04,927 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 16:01:04,969 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:01:04,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:01:04,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:01:04,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:01:04,973 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:01:04,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:01:04,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:01:04,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:01:04,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:01:04,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:01:04,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:01:04,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:01:04,975 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:01:04,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:01:04,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:01:04,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:01:04,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:01:04,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:01:04,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:01:04,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:01:04,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:01:04,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:01:04,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:01:04,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:01:04,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:01:04,978 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:01:05,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:01:05,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:01:05,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:01:05,389 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:01:05,389 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:01:05,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2_reinit.c [2021-01-06 16:01:05,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5c843c1ce/9e98d7e464754828a4760946c9682e62/FLAGeb9b88c82 [2021-01-06 16:01:06,150 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:01:06,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2_reinit.c [2021-01-06 16:01:06,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5c843c1ce/9e98d7e464754828a4760946c9682e62/FLAGeb9b88c82 [2021-01-06 16:01:06,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5c843c1ce/9e98d7e464754828a4760946c9682e62 [2021-01-06 16:01:06,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:01:06,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:01:06,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:01:06,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:01:06,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:01:06,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:01:06" (1/1) ... [2021-01-06 16:01:06,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d623d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:06, skipping insertion in model container [2021-01-06 16:01:06,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:01:06" (1/1) ... [2021-01-06 16:01:06,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:01:06,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 16:01:06,697 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] left hand side expression in assignment: lhs: VariableLHS[~E~0,] left hand side expression in assignment: lhs: VariableLHS[~E0~0,] left hand side expression in assignment: lhs: VariableLHS[~S0~0,] left hand side expression in assignment: lhs: VariableLHS[~S~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~E1~0,] left hand side expression in assignment: lhs: VariableLHS[~E0~0,] left hand side expression in assignment: lhs: VariableLHS[~E~0,] left hand side expression in assignment: lhs: VariableLHS[~E1~0,] left hand side expression in assignment: lhs: VariableLHS[~E0~0,] left hand side expression in assignment: lhs: VariableLHS[~S0~0,] left hand side expression in assignment: lhs: VariableLHS[~S~0,] left hand side expression in assignment: lhs: VariableLHS[~S1~0,] left hand side expression in assignment: lhs: VariableLHS[~S0~0,] left hand side expression in assignment: lhs: VariableLHS[~S~0,] [2021-01-06 16:01:06,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:01:06,732 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 16:01:06,746 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] left hand side expression in assignment: lhs: VariableLHS[~E~0,] left hand side expression in assignment: lhs: VariableLHS[~E0~0,] left hand side expression in assignment: lhs: VariableLHS[~S0~0,] left hand side expression in assignment: lhs: VariableLHS[~S~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~E1~0,] left hand side expression in assignment: lhs: VariableLHS[~E0~0,] left hand side expression in assignment: lhs: VariableLHS[~E~0,] left hand side expression in assignment: lhs: VariableLHS[~E1~0,] left hand side expression in assignment: lhs: VariableLHS[~E0~0,] left hand side expression in assignment: lhs: VariableLHS[~S0~0,] left hand side expression in assignment: lhs: VariableLHS[~S~0,] left hand side expression in assignment: lhs: VariableLHS[~S1~0,] left hand side expression in assignment: lhs: VariableLHS[~S0~0,] left hand side expression in assignment: lhs: VariableLHS[~S~0,] [2021-01-06 16:01:06,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:01:06,771 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:01:06,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:06 WrapperNode [2021-01-06 16:01:06,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:01:06,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:01:06,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:01:06,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:01:06,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:06" (1/1) ... [2021-01-06 16:01:06,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:06" (1/1) ... [2021-01-06 16:01:06,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:01:06,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:01:06,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:01:06,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:01:06,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:06" (1/1) ... [2021-01-06 16:01:06,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:06" (1/1) ... [2021-01-06 16:01:06,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:06" (1/1) ... [2021-01-06 16:01:06,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:06" (1/1) ... [2021-01-06 16:01:06,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:06" (1/1) ... [2021-01-06 16:01:06,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:06" (1/1) ... [2021-01-06 16:01:06,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:06" (1/1) ... [2021-01-06 16:01:06,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:01:06,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:01:06,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:01:06,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:01:06,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 16:01:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:01:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:01:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:01:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:01:07,187 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:01:07,188 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-01-06 16:01:07,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:07 BoogieIcfgContainer [2021-01-06 16:01:07,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:01:07,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:01:07,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:01:07,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:01:07,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:01:06" (1/3) ... [2021-01-06 16:01:07,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8c269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:01:07, skipping insertion in model container [2021-01-06 16:01:07,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:06" (2/3) ... [2021-01-06 16:01:07,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8c269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:01:07, skipping insertion in model container [2021-01-06 16:01:07,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:07" (3/3) ... [2021-01-06 16:01:07,200 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_reinit.c [2021-01-06 16:01:07,206 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:01:07,211 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:01:07,232 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:01:07,304 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:01:07,304 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:01:07,304 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:01:07,304 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:01:07,304 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:01:07,305 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:01:07,305 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:01:07,305 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:01:07,329 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2021-01-06 16:01:07,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 16:01:07,335 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:07,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:07,336 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:07,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:07,344 INFO L82 PathProgramCache]: Analyzing trace with hash 117626391, now seen corresponding path program 1 times [2021-01-06 16:01:07,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:07,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351418447] [2021-01-06 16:01:07,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:01:07,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351418447] [2021-01-06 16:01:07,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:01:07,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:01:07,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058438147] [2021-01-06 16:01:07,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:01:07,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:07,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:01:07,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:01:07,554 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2021-01-06 16:01:07,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:07,572 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2021-01-06 16:01:07,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:01:07,574 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2021-01-06 16:01:07,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:07,583 INFO L225 Difference]: With dead ends: 35 [2021-01-06 16:01:07,583 INFO L226 Difference]: Without dead ends: 15 [2021-01-06 16:01:07,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:01:07,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-01-06 16:01:07,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-01-06 16:01:07,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-01-06 16:01:07,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-01-06 16:01:07,626 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2021-01-06 16:01:07,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:07,627 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-01-06 16:01:07,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:01:07,627 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-01-06 16:01:07,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 16:01:07,628 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:07,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:07,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:01:07,630 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:07,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:07,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1556007641, now seen corresponding path program 1 times [2021-01-06 16:01:07,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:07,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310129283] [2021-01-06 16:01:07,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:01:07,726 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:01:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:01:07,789 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:01:07,831 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:01:07,831 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:01:07,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:01:07,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:01:07 BoogieIcfgContainer [2021-01-06 16:01:07,881 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:01:07,882 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:01:07,884 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:01:07,884 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:01:07,885 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:07" (3/4) ... [2021-01-06 16:01:07,889 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:01:07,890 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:01:07,895 INFO L168 Benchmark]: Toolchain (without parser) took 1382.09 ms. Allocated memory is still 158.3 MB. Free memory was 133.0 MB in the beginning and 120.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:07,896 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 158.3 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:01:07,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.47 ms. Allocated memory is still 158.3 MB. Free memory was 132.9 MB in the beginning and 122.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:07,899 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.99 ms. Allocated memory is still 158.3 MB. Free memory was 122.6 MB in the beginning and 121.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:07,901 INFO L168 Benchmark]: Boogie Preprocessor took 26.25 ms. Allocated memory is still 158.3 MB. Free memory was 121.2 MB in the beginning and 119.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:07,902 INFO L168 Benchmark]: RCFGBuilder took 350.42 ms. Allocated memory is still 158.3 MB. Free memory was 119.9 MB in the beginning and 106.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:07,902 INFO L168 Benchmark]: TraceAbstraction took 689.61 ms. Allocated memory is still 158.3 MB. Free memory was 106.0 MB in the beginning and 120.5 MB in the end (delta: -14.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:01:07,904 INFO L168 Benchmark]: Witness Printer took 7.99 ms. Allocated memory is still 158.3 MB. Free memory was 120.5 MB in the beginning and 120.0 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:01:07,920 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 158.3 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 253.47 ms. Allocated memory is still 158.3 MB. Free memory was 132.9 MB in the beginning and 122.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.99 ms. Allocated memory is still 158.3 MB. Free memory was 122.6 MB in the beginning and 121.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.25 ms. Allocated memory is still 158.3 MB. Free memory was 121.2 MB in the beginning and 119.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 350.42 ms. Allocated memory is still 158.3 MB. Free memory was 119.9 MB in the beginning and 106.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 689.61 ms. Allocated memory is still 158.3 MB. Free memory was 106.0 MB in the beginning and 120.5 MB in the end (delta: -14.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 7.99 ms. Allocated memory is still 158.3 MB. Free memory was 120.5 MB in the beginning and 120.0 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of to_real at line 31, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51. Possible FailurePath: [L23] double E, E0, E1, S0, S1, S; [L24] int i; [L26] E = __VERIFIER_nondet_double() [L27] E0 = __VERIFIER_nondet_double() [L16] COND FALSE !(!cond) [L16] COND FALSE !(!cond) [L31] S0 = 0 [L32] S = 0 [L34] i = 0 [L34] COND TRUE i <= 1000000 [L36] E1 = E0 [L37] E0 = E [L39] E = __VERIFIER_nondet_double() [L16] COND FALSE !(!cond) [L42] COND TRUE __VERIFIER_nondet_int() [L43] E1 = E [L44] E0 = E [L45] S0 = E [L46] S = E [L49] S1 = S0 [L50] S0 = S [L51] S = 0.7*E - E0*1.3 + E1*1.1 + S0*1.4 - S1*0.7 [L18] COND TRUE !(cond) [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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...