/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/drift_tenth.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:00:51,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:00:51,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:00:51,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:00:51,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:00:51,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:00:51,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:00:51,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:00:51,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:00:51,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:00:51,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:00:51,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:00:51,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:00:51,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:00:51,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:00:51,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:00:51,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:00:51,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:00:51,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:00:51,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:00:51,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:00:51,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:00:51,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:00:51,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:00:51,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:00:51,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:00:51,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:00:51,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:00:51,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:00:51,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:00:51,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:00:51,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:00:51,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:00:51,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:00:51,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:00:51,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:00:51,389 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 16:00:51,457 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:00:51,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:00:51,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:00:51,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:00:51,462 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:00:51,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:00:51,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:00:51,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:00:51,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:00:51,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:00:51,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:00:51,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:00:51,466 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:00:51,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:00:51,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:00:51,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:00:51,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:00:51,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:00:51,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:00:51,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:00:51,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:00:51,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:00:51,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:00:51,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:00:51,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:00:51,468 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:00:51,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:00:51,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:00:51,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:00:51,956 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:00:51,957 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:00:51,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/drift_tenth.c [2021-01-06 16:00:52,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d3246b4d6/6b087f7c6d4f42829d20051f6a076cc5/FLAG056c59d96 [2021-01-06 16:00:52,713 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:00:52,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/drift_tenth.c [2021-01-06 16:00:52,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d3246b4d6/6b087f7c6d4f42829d20051f6a076cc5/FLAG056c59d96 [2021-01-06 16:00:53,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d3246b4d6/6b087f7c6d4f42829d20051f6a076cc5 [2021-01-06 16:00:53,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:00:53,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:00:53,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:00:53,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:00:53,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:00:53,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:00:53" (1/1) ... [2021-01-06 16:00:53,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9250fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:53, skipping insertion in model container [2021-01-06 16:00:53,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:00:53" (1/1) ... [2021-01-06 16:00:53,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:00:53,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 16:00:53,281 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/drift_tenth.c[348,361] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-06 16:00:53,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:00:53,312 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 16:00:53,327 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/drift_tenth.c[348,361] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-06 16:00:53,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:00:53,352 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:00:53,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:53 WrapperNode [2021-01-06 16:00:53,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:00:53,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:00:53,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:00:53,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:00:53,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:53" (1/1) ... [2021-01-06 16:00:53,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:53" (1/1) ... [2021-01-06 16:00:53,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:00:53,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:00:53,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:00:53,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:00:53,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:53" (1/1) ... [2021-01-06 16:00:53,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:53" (1/1) ... [2021-01-06 16:00:53,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:53" (1/1) ... [2021-01-06 16:00:53,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:53" (1/1) ... [2021-01-06 16:00:53,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:53" (1/1) ... [2021-01-06 16:00:53,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:53" (1/1) ... [2021-01-06 16:00:53,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:53" (1/1) ... [2021-01-06 16:00:53,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:00:53,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:00:53,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:00:53,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:00:53,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:53" (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 16:00:53,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:00:53,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:00:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:00:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:00:53,778 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:00:53,778 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-01-06 16:00:53,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:00:53 BoogieIcfgContainer [2021-01-06 16:00:53,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:00:53,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:00:53,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:00:53,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:00:53,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:00:53" (1/3) ... [2021-01-06 16:00:53,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d6a36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:00:53, skipping insertion in model container [2021-01-06 16:00:53,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:53" (2/3) ... [2021-01-06 16:00:53,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d6a36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:00:53, skipping insertion in model container [2021-01-06 16:00:53,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:00:53" (3/3) ... [2021-01-06 16:00:53,791 INFO L111 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2021-01-06 16:00:53,798 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:00:53,804 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:00:53,826 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:00:53,854 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:00:53,854 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:00:53,854 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:00:53,854 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:00:53,855 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:00:53,855 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:00:53,855 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:00:53,855 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:00:53,929 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-01-06 16:00:53,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 16:00:53,959 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:00:53,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 16:00:53,963 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:00:53,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:00:53,980 INFO L82 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2021-01-06 16:00:53,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:00:53,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360446313] [2021-01-06 16:00:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:00:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:00:54,189 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 16:00:54,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360446313] [2021-01-06 16:00:54,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:00:54,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:00:54,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174753514] [2021-01-06 16:00:54,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:00:54,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:00:54,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:00:54,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:00:54,216 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2021-01-06 16:00:54,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:00:54,251 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-01-06 16:00:54,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:00:54,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-01-06 16:00:54,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:00:54,263 INFO L225 Difference]: With dead ends: 22 [2021-01-06 16:00:54,263 INFO L226 Difference]: Without dead ends: 10 [2021-01-06 16:00:54,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:00:54,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-01-06 16:00:54,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-01-06 16:00:54,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-01-06 16:00:54,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-01-06 16:00:54,310 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-01-06 16:00:54,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:00:54,311 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-01-06 16:00:54,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:00:54,311 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-01-06 16:00:54,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 16:00:54,312 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:00:54,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:00:54,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:00:54,313 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:00:54,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:00:54,314 INFO L82 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2021-01-06 16:00:54,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:00:54,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395996125] [2021-01-06 16:00:54,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:00:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:00:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:54,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395996125] [2021-01-06 16:00:54,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003446212] [2021-01-06 16:00:54,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:00:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:00:54,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 16:00:54,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:00:54,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:54,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:00:54,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-01-06 16:00:54,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013183287] [2021-01-06 16:00:54,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 16:00:54,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:00:54,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 16:00:54,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:00:54,634 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2021-01-06 16:00:54,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:00:54,671 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-01-06 16:00:54,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:00:54,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-01-06 16:00:54,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:00:54,673 INFO L225 Difference]: With dead ends: 16 [2021-01-06 16:00:54,673 INFO L226 Difference]: Without dead ends: 12 [2021-01-06 16:00:54,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:00:54,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-01-06 16:00:54,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-01-06 16:00:54,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-01-06 16:00:54,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-01-06 16:00:54,679 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2021-01-06 16:00:54,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:00:54,680 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-01-06 16:00:54,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 16:00:54,681 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-01-06 16:00:54,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 16:00:54,683 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:00:54,683 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 16:00:54,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 16:00:54,900 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:00:54,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:00:54,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1489078833, now seen corresponding path program 2 times [2021-01-06 16:00:54,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:00:54,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957203345] [2021-01-06 16:00:54,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:00:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:00:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:54,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957203345] [2021-01-06 16:00:54,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070784574] [2021-01-06 16:00:54,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:00:55,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:00:55,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:00:55,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 16:00:55,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:00:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:55,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:00:55,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-01-06 16:00:55,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073808621] [2021-01-06 16:00:55,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 16:00:55,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:00:55,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 16:00:55,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 16:00:55,035 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2021-01-06 16:00:55,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:00:55,053 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-01-06 16:00:55,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 16:00:55,054 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-01-06 16:00:55,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:00:55,055 INFO L225 Difference]: With dead ends: 18 [2021-01-06 16:00:55,055 INFO L226 Difference]: Without dead ends: 14 [2021-01-06 16:00:55,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 16:00:55,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-01-06 16:00:55,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-01-06 16:00:55,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-01-06 16:00:55,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-01-06 16:00:55,059 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2021-01-06 16:00:55,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:00:55,059 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-01-06 16:00:55,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 16:00:55,060 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-01-06 16:00:55,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 16:00:55,060 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:00:55,061 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2021-01-06 16:00:55,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:00:55,275 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:00:55,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:00:55,276 INFO L82 PathProgramCache]: Analyzing trace with hash 833881267, now seen corresponding path program 3 times [2021-01-06 16:00:55,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:00:55,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702503727] [2021-01-06 16:00:55,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:00:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:00:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:55,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702503727] [2021-01-06 16:00:55,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646782385] [2021-01-06 16:00:55,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:00:55,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-06 16:00:55,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:00:55,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 16:00:55,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:00:55,408 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:55,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:00:55,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-01-06 16:00:55,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933599429] [2021-01-06 16:00:55,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 16:00:55,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:00:55,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 16:00:55,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-06 16:00:55,412 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2021-01-06 16:00:55,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:00:55,450 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-01-06 16:00:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 16:00:55,452 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2021-01-06 16:00:55,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:00:55,452 INFO L225 Difference]: With dead ends: 20 [2021-01-06 16:00:55,452 INFO L226 Difference]: Without dead ends: 16 [2021-01-06 16:00:55,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-06 16:00:55,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-01-06 16:00:55,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-01-06 16:00:55,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-01-06 16:00:55,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-01-06 16:00:55,459 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2021-01-06 16:00:55,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:00:55,470 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-01-06 16:00:55,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 16:00:55,472 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-01-06 16:00:55,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:00:55,472 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:00:55,473 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2021-01-06 16:00:55,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:00:55,688 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:00:55,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:00:55,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1745754443, now seen corresponding path program 4 times [2021-01-06 16:00:55,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:00:55,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883452528] [2021-01-06 16:00:55,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:00:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:00:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:55,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883452528] [2021-01-06 16:00:55,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685548240] [2021-01-06 16:00:55,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:00:55,842 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:00:55,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:00:55,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 16:00:55,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:00:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:55,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:00:55,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-01-06 16:00:55,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961033515] [2021-01-06 16:00:55,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 16:00:55,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:00:55,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 16:00:55,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-06 16:00:55,883 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2021-01-06 16:00:55,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:00:55,907 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-01-06 16:00:55,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 16:00:55,908 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2021-01-06 16:00:55,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:00:55,909 INFO L225 Difference]: With dead ends: 22 [2021-01-06 16:00:55,909 INFO L226 Difference]: Without dead ends: 18 [2021-01-06 16:00:55,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-06 16:00:55,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-01-06 16:00:55,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-01-06 16:00:55,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-01-06 16:00:55,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-01-06 16:00:55,914 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2021-01-06 16:00:55,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:00:55,914 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-01-06 16:00:55,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 16:00:55,914 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-01-06 16:00:55,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 16:00:55,915 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:00:55,915 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2021-01-06 16:00:56,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:00:56,129 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:00:56,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:00:56,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1715425335, now seen corresponding path program 5 times [2021-01-06 16:00:56,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:00:56,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965251322] [2021-01-06 16:00:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:00:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:00:56,217 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:56,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965251322] [2021-01-06 16:00:56,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501861800] [2021-01-06 16:00:56,218 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:00:56,259 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-06 16:00:56,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:00:56,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 16:00:56,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:00:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:56,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:00:56,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-01-06 16:00:56,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843593968] [2021-01-06 16:00:56,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 16:00:56,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:00:56,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 16:00:56,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-01-06 16:00:56,307 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2021-01-06 16:00:56,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:00:56,334 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-01-06 16:00:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 16:00:56,334 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2021-01-06 16:00:56,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:00:56,335 INFO L225 Difference]: With dead ends: 24 [2021-01-06 16:00:56,335 INFO L226 Difference]: Without dead ends: 20 [2021-01-06 16:00:56,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-01-06 16:00:56,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-01-06 16:00:56,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-01-06 16:00:56,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 16:00:56,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-01-06 16:00:56,340 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2021-01-06 16:00:56,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:00:56,340 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-01-06 16:00:56,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 16:00:56,341 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-01-06 16:00:56,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 16:00:56,341 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:00:56,341 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1] [2021-01-06 16:00:56,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 16:00:56,555 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:00:56,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:00:56,556 INFO L82 PathProgramCache]: Analyzing trace with hash -690462407, now seen corresponding path program 6 times [2021-01-06 16:00:56,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:00:56,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083007688] [2021-01-06 16:00:56,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:00:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:00:56,629 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:56,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083007688] [2021-01-06 16:00:56,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751341855] [2021-01-06 16:00:56,630 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:00:56,680 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-06 16:00:56,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:00:56,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 16:00:56,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:00:56,730 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:56,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:00:56,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-01-06 16:00:56,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388008138] [2021-01-06 16:00:56,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 16:00:56,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:00:56,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 16:00:56,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-01-06 16:00:56,733 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2021-01-06 16:00:56,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:00:56,764 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-01-06 16:00:56,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 16:00:56,765 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2021-01-06 16:00:56,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:00:56,766 INFO L225 Difference]: With dead ends: 26 [2021-01-06 16:00:56,766 INFO L226 Difference]: Without dead ends: 22 [2021-01-06 16:00:56,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-01-06 16:00:56,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-01-06 16:00:56,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-01-06 16:00:56,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-01-06 16:00:56,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-01-06 16:00:56,772 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2021-01-06 16:00:56,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:00:56,772 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-01-06 16:00:56,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 16:00:56,772 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-01-06 16:00:56,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 16:00:56,773 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:00:56,773 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1] [2021-01-06 16:00:56,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:00:56,988 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:00:56,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:00:56,989 INFO L82 PathProgramCache]: Analyzing trace with hash -2056177221, now seen corresponding path program 7 times [2021-01-06 16:00:56,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:00:56,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65743527] [2021-01-06 16:00:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:00:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:00:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:57,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65743527] [2021-01-06 16:00:57,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332079992] [2021-01-06 16:00:57,117 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:00:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:00:57,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 16:00:57,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:00:57,236 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:57,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:00:57,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-01-06 16:00:57,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603731318] [2021-01-06 16:00:57,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 16:00:57,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:00:57,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 16:00:57,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-01-06 16:00:57,239 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2021-01-06 16:00:57,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:00:57,279 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-01-06 16:00:57,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 16:00:57,280 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2021-01-06 16:00:57,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:00:57,281 INFO L225 Difference]: With dead ends: 28 [2021-01-06 16:00:57,281 INFO L226 Difference]: Without dead ends: 24 [2021-01-06 16:00:57,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-01-06 16:00:57,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-01-06 16:00:57,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-01-06 16:00:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 16:00:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-01-06 16:00:57,286 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2021-01-06 16:00:57,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:00:57,286 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-01-06 16:00:57,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 16:00:57,287 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-01-06 16:00:57,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 16:00:57,287 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:00:57,288 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1] [2021-01-06 16:00:57,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:00:57,498 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:00:57,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:00:57,500 INFO L82 PathProgramCache]: Analyzing trace with hash -248120899, now seen corresponding path program 8 times [2021-01-06 16:00:57,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:00:57,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159733850] [2021-01-06 16:00:57,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:00:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:00:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:57,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159733850] [2021-01-06 16:00:57,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585162656] [2021-01-06 16:00:57,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:00:57,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:00:57,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:00:57,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 16:00:57,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:00:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:57,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:00:57,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-01-06 16:00:57,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764660925] [2021-01-06 16:00:57,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 16:00:57,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:00:57,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 16:00:57,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-01-06 16:00:57,753 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2021-01-06 16:00:57,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:00:57,790 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-01-06 16:00:57,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 16:00:57,790 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2021-01-06 16:00:57,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:00:57,791 INFO L225 Difference]: With dead ends: 30 [2021-01-06 16:00:57,791 INFO L226 Difference]: Without dead ends: 26 [2021-01-06 16:00:57,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-01-06 16:00:57,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-01-06 16:00:57,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-01-06 16:00:57,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-06 16:00:57,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-01-06 16:00:57,796 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2021-01-06 16:00:57,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:00:57,796 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-01-06 16:00:57,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 16:00:57,797 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-01-06 16:00:57,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 16:00:57,797 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:00:57,798 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1] [2021-01-06 16:00:58,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 16:00:58,010 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:00:58,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:00:58,011 INFO L82 PathProgramCache]: Analyzing trace with hash 2127216959, now seen corresponding path program 9 times [2021-01-06 16:00:58,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:00:58,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13099258] [2021-01-06 16:00:58,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:00:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:00:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:58,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13099258] [2021-01-06 16:00:58,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255930969] [2021-01-06 16:00:58,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:00:58,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-06 16:00:58,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:00:58,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 16:00:58,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:00:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:00:58,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:00:58,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-01-06 16:00:58,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830314731] [2021-01-06 16:00:58,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 16:00:58,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:00:58,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 16:00:58,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-01-06 16:00:58,267 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2021-01-06 16:00:58,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:00:58,321 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-01-06 16:00:58,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 16:00:58,322 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2021-01-06 16:00:58,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:00:58,323 INFO L225 Difference]: With dead ends: 31 [2021-01-06 16:00:58,323 INFO L226 Difference]: Without dead ends: 27 [2021-01-06 16:00:58,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-01-06 16:00:58,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-06 16:00:58,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-01-06 16:00:58,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 16:00:58,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-01-06 16:00:58,328 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2021-01-06 16:00:58,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:00:58,329 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-01-06 16:00:58,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 16:00:58,329 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-01-06 16:00:58,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 16:00:58,330 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:00:58,330 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2021-01-06 16:00:58,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:00:58,546 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:00:58,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:00:58,547 INFO L82 PathProgramCache]: Analyzing trace with hash -95702975, now seen corresponding path program 10 times [2021-01-06 16:00:58,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:00:58,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342423919] [2021-01-06 16:00:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:00:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:00:58,563 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:00:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:00:58,575 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:00:58,596 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:00:58,597 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:00:58,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 16:00:58,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:00:58 BoogieIcfgContainer [2021-01-06 16:00:58,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:00:58,635 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:00:58,635 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:00:58,635 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:00:58,636 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:00:53" (3/4) ... [2021-01-06 16:00:58,639 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:00:58,640 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:00:58,642 INFO L168 Benchmark]: Toolchain (without parser) took 5564.89 ms. Allocated memory was 163.6 MB in the beginning and 200.3 MB in the end (delta: 36.7 MB). Free memory was 140.1 MB in the beginning and 99.6 MB in the end (delta: 40.5 MB). Peak memory consumption was 77.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:00:58,642 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 163.6 MB. Free memory is still 139.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:00:58,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.99 ms. Allocated memory is still 163.6 MB. Free memory was 139.9 MB in the beginning and 130.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 16:00:58,644 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.98 ms. Allocated memory is still 163.6 MB. Free memory was 130.5 MB in the beginning and 129.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:00:58,645 INFO L168 Benchmark]: Boogie Preprocessor took 40.08 ms. Allocated memory is still 163.6 MB. Free memory was 129.2 MB in the beginning and 128.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:00:58,645 INFO L168 Benchmark]: RCFGBuilder took 331.02 ms. Allocated memory is still 163.6 MB. Free memory was 128.1 MB in the beginning and 117.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:00:58,646 INFO L168 Benchmark]: TraceAbstraction took 4851.82 ms. Allocated memory was 163.6 MB in the beginning and 200.3 MB in the end (delta: 36.7 MB). Free memory was 116.9 MB in the beginning and 99.6 MB in the end (delta: 17.3 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:00:58,647 INFO L168 Benchmark]: Witness Printer took 5.17 ms. Allocated memory is still 200.3 MB. Free memory is still 99.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:00:58,651 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 163.6 MB. Free memory is still 139.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 275.99 ms. Allocated memory is still 163.6 MB. Free memory was 139.9 MB in the beginning and 130.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.98 ms. Allocated memory is still 163.6 MB. Free memory was 130.5 MB in the beginning and 129.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.08 ms. Allocated memory is still 163.6 MB. Free memory was 129.2 MB in the beginning and 128.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 331.02 ms. Allocated memory is still 163.6 MB. Free memory was 128.1 MB in the beginning and 117.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4851.82 ms. Allocated memory was 163.6 MB in the beginning and 200.3 MB in the end (delta: 36.7 MB). Free memory was 116.9 MB in the beginning and 99.6 MB in the end (delta: 17.3 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. * Witness Printer took 5.17 ms. Allocated memory is still 200.3 MB. Free memory is still 99.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: 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 17, overapproximation of someBinaryArithmeticFLOAToperation at line 15. Possible FailurePath: [L10] float tick = 1.f / 10.f; [L11] float time = 0.f; [L12] int i; [L14] i = 0 [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND FALSE !(i < 10) [L6] COND TRUE !(cond) [L6] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 55 SDslu, 184 SDs, 0 SdLazy, 180 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=10, 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, 10 MinimizatonAttempts, 9 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 320 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 11465 SizeOfPredicates, 0 NumberOfNonLiveVariables, 493 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 0/570 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...