/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/zonotope_loose.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:42:32,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:42:32,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:42:32,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 03:42:33,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:42:33,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:42:33,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:42:33,038 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:42:33,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:42:33,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:42:33,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:42:33,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:42:33,099 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:42:33,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:42:33,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:42:33,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:42:33,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:42:33,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:42:33,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:42:33,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:42:33,103 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:42:33,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:42:33,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:42:33,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:42:33,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:42:33,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:42:33,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:42:33,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:42:33,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:42:33,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:42:33,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:42:33,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:42:33,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:42:33,106 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:42:33,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:42:33,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:42:33,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:42:33,627 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:42:33,628 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:42:33,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2020-12-22 03:42:33,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d101a49d5/ae9911e2bf47479daa2a5d55cb911cc4/FLAG4a8337f52 [2020-12-22 03:42:34,351 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:42:34,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2020-12-22 03:42:34,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d101a49d5/ae9911e2bf47479daa2a5d55cb911cc4/FLAG4a8337f52 [2020-12-22 03:42:34,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d101a49d5/ae9911e2bf47479daa2a5d55cb911cc4 [2020-12-22 03:42:34,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:42:34,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:42:34,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:42:34,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:42:34,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:42:34,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:42:34" (1/1) ... [2020-12-22 03:42:34,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b81524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:34, skipping insertion in model container [2020-12-22 03:42:34,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:42:34" (1/1) ... [2020-12-22 03:42:34,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:42:34,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:42:34,982 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/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2020-12-22 03:42:34,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:42:35,008 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:42:35,035 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/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2020-12-22 03:42:35,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:42:35,062 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:42:35,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:35 WrapperNode [2020-12-22 03:42:35,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:42:35,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:42:35,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:42:35,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:42:35,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:35" (1/1) ... [2020-12-22 03:42:35,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:35" (1/1) ... [2020-12-22 03:42:35,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:42:35,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:42:35,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:42:35,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:42:35,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:35" (1/1) ... [2020-12-22 03:42:35,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:35" (1/1) ... [2020-12-22 03:42:35,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:35" (1/1) ... [2020-12-22 03:42:35,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:35" (1/1) ... [2020-12-22 03:42:35,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:35" (1/1) ... [2020-12-22 03:42:35,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:35" (1/1) ... [2020-12-22 03:42:35,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:35" (1/1) ... [2020-12-22 03:42:35,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:42:35,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:42:35,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:42:35,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:42:35,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:35" (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 03:42:35,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:42:35,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:42:35,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:42:35,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:42:35,552 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:42:35,553 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 03:42:35,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:42:35 BoogieIcfgContainer [2020-12-22 03:42:35,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:42:35,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:42:35,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:42:35,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:42:35,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:42:34" (1/3) ... [2020-12-22 03:42:35,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23edacce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:42:35, skipping insertion in model container [2020-12-22 03:42:35,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:35" (2/3) ... [2020-12-22 03:42:35,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23edacce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:42:35, skipping insertion in model container [2020-12-22 03:42:35,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:42:35" (3/3) ... [2020-12-22 03:42:35,565 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_loose.c.v+cfa-reducer.c [2020-12-22 03:42:35,572 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:42:35,578 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:42:35,605 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:42:35,701 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:42:35,701 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:42:35,701 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:42:35,701 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:42:35,701 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:42:35,701 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:42:35,701 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:42:35,702 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:42:35,720 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-12-22 03:42:35,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 03:42:35,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:42:35,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:42:35,728 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:42:35,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:42:35,735 INFO L82 PathProgramCache]: Analyzing trace with hash 570602568, now seen corresponding path program 1 times [2020-12-22 03:42:35,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:42:35,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337903118] [2020-12-22 03:42:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:42:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:42:36,065 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 03:42:36,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337903118] [2020-12-22 03:42:36,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:42:36,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 03:42:36,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604280271] [2020-12-22 03:42:36,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 03:42:36,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:42:36,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 03:42:36,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:42:36,103 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2020-12-22 03:42:36,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:42:36,253 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-12-22 03:42:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 03:42:36,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-22 03:42:36,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:42:36,273 INFO L225 Difference]: With dead ends: 30 [2020-12-22 03:42:36,274 INFO L226 Difference]: Without dead ends: 14 [2020-12-22 03:42:36,277 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 03:42:36,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-22 03:42:36,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-22 03:42:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-22 03:42:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-12-22 03:42:36,317 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2020-12-22 03:42:36,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:42:36,318 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-12-22 03:42:36,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 03:42:36,318 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-12-22 03:42:36,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 03:42:36,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:42:36,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:42:36,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:42:36,320 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:42:36,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:42:36,325 INFO L82 PathProgramCache]: Analyzing trace with hash 587613229, now seen corresponding path program 1 times [2020-12-22 03:42:36,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:42:36,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480098037] [2020-12-22 03:42:36,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:42:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:42:36,381 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:42:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:42:36,409 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:42:36,440 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:42:36,441 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:42:36,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:42:36,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:42:36 BoogieIcfgContainer [2020-12-22 03:42:36,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:42:36,495 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:42:36,495 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:42:36,495 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:42:36,496 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:42:35" (3/4) ... [2020-12-22 03:42:36,499 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:42:36,499 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:42:36,504 INFO L168 Benchmark]: Toolchain (without parser) took 1816.36 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 106.0 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-22 03:42:36,506 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:42:36,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.36 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 115.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:42:36,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.97 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:42:36,509 INFO L168 Benchmark]: Boogie Preprocessor took 22.82 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 113.2 MB in the end (delta: 918.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:42:36,511 INFO L168 Benchmark]: RCFGBuilder took 422.55 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 100.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:42:36,512 INFO L168 Benchmark]: TraceAbstraction took 937.52 ms. Allocated memory is still 151.0 MB. Free memory was 100.2 MB in the beginning and 106.5 MB in the end (delta: -6.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:42:36,514 INFO L168 Benchmark]: Witness Printer took 5.09 ms. Allocated memory is still 151.0 MB. Free memory was 106.5 MB in the beginning and 106.0 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:42:36,528 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 375.36 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 115.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.97 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.82 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 113.2 MB in the end (delta: 918.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 422.55 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 100.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 937.52 ms. Allocated memory is still 151.0 MB. Free memory was 100.2 MB in the beginning and 106.5 MB in the end (delta: -6.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 5.09 ms. Allocated memory is still 151.0 MB. Free memory was 106.5 MB in the beginning and 106.0 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 45]: 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 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 69. Possible FailurePath: [L1] int __return_main; [L12] int __return_76; VAL [__return_76=0, __return_main=0] [L15] double main__x; [L16] double main__y; [L17] main__x = __VERIFIER_nondet_double() [L18] int main____CPAchecker_TMP_0; VAL [__return_76=0, __return_main=0] [L19] COND TRUE main__x >= 0.0 VAL [__return_76=0, __return_main=0] [L21] COND TRUE main__x <= 10.0 [L23] main____CPAchecker_TMP_0 = 1 VAL [__return_76=0, __return_main=0] [L24] COND TRUE main____CPAchecker_TMP_0 != 0 [L26] main__y = (main__x * main__x) - main__x VAL [__return_76=0, __return_main=0] [L27] COND FALSE !(main__y >= 0) [L69] main__y = (main__x * main__x) + 2.0 VAL [__return_76=0, __return_main=0] [L31] int main____CPAchecker_TMP_1; VAL [__return_76=0, __return_main=0] [L32] COND FALSE !(main__y >= 0.0) VAL [__return_76=0, __return_main=0] [L58] main____CPAchecker_TMP_1 = 0 VAL [__return_76=0, __return_main=0] [L39] int __tmp_1; [L40] __tmp_1 = main____CPAchecker_TMP_1 [L41] int __VERIFIER_assert__cond; [L42] __VERIFIER_assert__cond = __tmp_1 VAL [__return_76=0, __return_main=0] [L43] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_76=0, __return_main=0] [L45] reach_error() VAL [__return_76=0, __return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 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: 20 SDtfs, 28 SDslu, 39 SDs, 0 SdLazy, 13 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=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 209 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...