/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/filter1.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:41:24,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:41:24,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:41:24,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 03:41:25,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:41:25,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:41:25,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:41:25,054 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:41:25,103 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:41:25,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:41:25,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:41:25,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:41:25,108 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:41:25,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:41:25,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:41:25,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:41:25,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:41:25,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:41:25,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:41:25,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:41:25,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:41:25,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:41:25,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:41:25,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:41:25,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:41:25,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:41:25,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:41:25,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:41:25,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:41:25,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:41:25,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:41:25,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:41:25,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:41:25,113 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:41:25,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:41:25,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:41:25,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:41:25,534 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:41:25,535 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:41:25,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2020-12-22 03:41:25,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec8476ca3/def98b78d940439791060386e535707e/FLAG61890ce44 [2020-12-22 03:41:26,172 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:41:26,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2020-12-22 03:41:26,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec8476ca3/def98b78d940439791060386e535707e/FLAG61890ce44 [2020-12-22 03:41:26,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec8476ca3/def98b78d940439791060386e535707e [2020-12-22 03:41:26,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:41:26,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:41:26,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:41:26,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:41:26,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:41:26,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:26,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20f4845e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26, skipping insertion in model container [2020-12-22 03:41:26,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:26,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:41:26,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:41:26,850 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/filter1.c.v+lhb-reducer.c[1355,1368] [2020-12-22 03:41:26,859 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/filter1.c.v+lhb-reducer.c[2394,2407] [2020-12-22 03:41:26,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:41:26,874 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:41:26,893 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/filter1.c.v+lhb-reducer.c[1355,1368] [2020-12-22 03:41:26,898 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/filter1.c.v+lhb-reducer.c[2394,2407] [2020-12-22 03:41:26,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:41:26,928 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:41:26,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26 WrapperNode [2020-12-22 03:41:26,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:41:26,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:41:26,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:41:26,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:41:26,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:26,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:26,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:41:26,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:41:26,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:41:26,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:41:26,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:26,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:27,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:27,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:27,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:27,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:27,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:27,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:41:27,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:41:27,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:41:27,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:41:27,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (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 03:41:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:41:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:41:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:41:27,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:41:27,484 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:41:27,496 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 03:41:27,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:41:27 BoogieIcfgContainer [2020-12-22 03:41:27,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:41:27,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:41:27,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:41:27,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:41:27,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:41:26" (1/3) ... [2020-12-22 03:41:27,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66572758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:41:27, skipping insertion in model container [2020-12-22 03:41:27,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (2/3) ... [2020-12-22 03:41:27,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66572758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:41:27, skipping insertion in model container [2020-12-22 03:41:27,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:41:27" (3/3) ... [2020-12-22 03:41:27,522 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c.v+lhb-reducer.c [2020-12-22 03:41:27,531 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:41:27,537 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 03:41:27,570 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 03:41:27,630 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:41:27,630 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:41:27,631 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:41:27,631 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:41:27,631 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:41:27,631 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:41:27,632 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:41:27,632 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:41:27,653 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-22 03:41:27,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 03:41:27,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:27,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:27,663 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:27,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:27,671 INFO L82 PathProgramCache]: Analyzing trace with hash 775758574, now seen corresponding path program 1 times [2020-12-22 03:41:27,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:27,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215703422] [2020-12-22 03:41:27,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:41:28,025 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 03:41:28,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215703422] [2020-12-22 03:41:28,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:41:28,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 03:41:28,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460920202] [2020-12-22 03:41:28,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 03:41:28,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:41:28,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 03:41:28,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:41:28,060 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-12-22 03:41:28,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:41:28,199 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2020-12-22 03:41:28,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 03:41:28,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 03:41:28,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:41:28,213 INFO L225 Difference]: With dead ends: 45 [2020-12-22 03:41:28,213 INFO L226 Difference]: Without dead ends: 34 [2020-12-22 03:41:28,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 03:41:28,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-22 03:41:28,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-12-22 03:41:28,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-22 03:41:28,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2020-12-22 03:41:28,254 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 13 [2020-12-22 03:41:28,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:41:28,255 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-12-22 03:41:28,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 03:41:28,255 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2020-12-22 03:41:28,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 03:41:28,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:28,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:28,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:41:28,257 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:28,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:28,258 INFO L82 PathProgramCache]: Analyzing trace with hash 843294771, now seen corresponding path program 1 times [2020-12-22 03:41:28,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:28,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72126727] [2020-12-22 03:41:28,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:41:28,280 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:41:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:41:28,297 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:41:28,321 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:41:28,322 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:41:28,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:41:28,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:41:28 BoogieIcfgContainer [2020-12-22 03:41:28,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:41:28,371 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:41:28,375 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:41:28,375 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:41:28,376 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:41:27" (3/4) ... [2020-12-22 03:41:28,379 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:41:28,379 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:41:28,385 INFO L168 Benchmark]: Toolchain (without parser) took 1824.06 ms. Allocated memory is still 153.1 MB. Free memory was 129.0 MB in the beginning and 103.3 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:28,386 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 153.1 MB. Free memory was 125.6 MB in the beginning and 125.4 MB in the end (delta: 215.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:41:28,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.07 ms. Allocated memory is still 153.1 MB. Free memory was 128.8 MB in the beginning and 117.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:28,389 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.60 ms. Allocated memory is still 153.1 MB. Free memory was 117.5 MB in the beginning and 116.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:28,389 INFO L168 Benchmark]: Boogie Preprocessor took 52.25 ms. Allocated memory is still 153.1 MB. Free memory was 116.0 MB in the beginning and 114.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:28,391 INFO L168 Benchmark]: RCFGBuilder took 457.62 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 134.8 MB in the end (delta: -20.0 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:28,393 INFO L168 Benchmark]: TraceAbstraction took 863.93 ms. Allocated memory is still 153.1 MB. Free memory was 134.2 MB in the beginning and 103.3 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:28,395 INFO L168 Benchmark]: Witness Printer took 8.58 ms. Allocated memory is still 153.1 MB. Free memory is still 103.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:41:28,405 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 153.1 MB. Free memory was 125.6 MB in the beginning and 125.4 MB in the end (delta: 215.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 365.07 ms. Allocated memory is still 153.1 MB. Free memory was 128.8 MB in the beginning and 117.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 55.60 ms. Allocated memory is still 153.1 MB. Free memory was 117.5 MB in the beginning and 116.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.25 ms. Allocated memory is still 153.1 MB. Free memory was 116.0 MB in the beginning and 114.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 457.62 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 134.8 MB in the end (delta: -20.0 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 863.93 ms. Allocated memory is still 153.1 MB. Free memory was 134.2 MB in the beginning and 103.3 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Witness Printer took 8.58 ms. Allocated memory is still 153.1 MB. Free memory is still 103.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 58]: 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 45, overapproximation of to_real at line 41. Possible FailurePath: [L1] int __return_main; [L13] int __tmp_129_0; [L14] int __tmp_129_1; [L15] int __tmp_129_2; [L16] int __return_134; VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L19] double main__E0; [L20] double main__E1; [L21] double main__S; [L22] int main__i; [L23] main__E1 = 0 [L24] main__S = 0 [L25] main__i = 0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L26] COND TRUE main__i <= 1000000 [L28] main__E0 = __VERIFIER_nondet_double() [L29] int main____CPAchecker_TMP_0; VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L30] COND TRUE main__E0 >= -1.0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L32] COND TRUE main__E0 <= 1.0 [L34] main____CPAchecker_TMP_0 = 1 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L35] COND TRUE main____CPAchecker_TMP_0 != 0 [L37] int main____CPAchecker_TMP_1; [L38] main____CPAchecker_TMP_1 = __VERIFIER_nondet_int() [L39] COND TRUE !(main____CPAchecker_TMP_1 == 0) [L41] main__S = 0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L43] main__E1 = main__E0 [L44] int main____CPAchecker_TMP_2; VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L45] COND FALSE !(main__S >= -10000.0) VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L162] main____CPAchecker_TMP_2 = 0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L52] int __tmp_1; [L53] __tmp_1 = main____CPAchecker_TMP_2 [L54] int __VERIFIER_assert__cond; [L55] __VERIFIER_assert__cond = __tmp_1 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L56] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L58] reach_error() VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 44 SDslu, 87 SDs, 0 SdLazy, 17 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 240 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...