/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/nla-digbench-scaling/sqrt1-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 08:14:59,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 08:14:59,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 08:14:59,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 08:14:59,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 08:14:59,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 08:14:59,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 08:14:59,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 08:14:59,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 08:14:59,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 08:14:59,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 08:14:59,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 08:14:59,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 08:14:59,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 08:14:59,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 08:14:59,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 08:14:59,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 08:14:59,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 08:14:59,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 08:14:59,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 08:14:59,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 08:14:59,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 08:14:59,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 08:14:59,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 08:14:59,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 08:14:59,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 08:14:59,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 08:14:59,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 08:14:59,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 08:14:59,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 08:14:59,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 08:14:59,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 08:14:59,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 08:14:59,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 08:14:59,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 08:14:59,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 08:14:59,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 08:14:59,968 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 08:14:59,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 08:14:59,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 08:14:59,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 08:14:59,973 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 08:14:59,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 08:14:59,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 08:14:59,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 08:14:59,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 08:14:59,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 08:14:59,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 08:14:59,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 08:14:59,976 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 08:14:59,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 08:14:59,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 08:14:59,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 08:14:59,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 08:14:59,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 08:14:59,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 08:14:59,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 08:14:59,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 08:14:59,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 08:14:59,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 08:14:59,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 08:14:59,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 08:14:59,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 08:15:00,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 08:15:00,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 08:15:00,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 08:15:00,413 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 08:15:00,413 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 08:15:00,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c [2020-12-23 08:15:00,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c9c4c26c4/351c274b827d43ec8a1df664f24b60ad/FLAGa099eec17 [2020-12-23 08:15:01,078 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 08:15:01,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c [2020-12-23 08:15:01,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c9c4c26c4/351c274b827d43ec8a1df664f24b60ad/FLAGa099eec17 [2020-12-23 08:15:01,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c9c4c26c4/351c274b827d43ec8a1df664f24b60ad [2020-12-23 08:15:01,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 08:15:01,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 08:15:01,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 08:15:01,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 08:15:01,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 08:15:01,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:15:01" (1/1) ... [2020-12-23 08:15:01,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3abd4384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:01, skipping insertion in model container [2020-12-23 08:15:01,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:15:01" (1/1) ... [2020-12-23 08:15:01,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 08:15:01,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 08:15:01,688 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/nla-digbench-scaling/sqrt1-ll_unwindbound5.c[520,533] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 08:15:01,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:15:01,722 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 08:15:01,736 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/nla-digbench-scaling/sqrt1-ll_unwindbound5.c[520,533] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 08:15:01,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:15:01,759 INFO L208 MainTranslator]: Completed translation [2020-12-23 08:15:01,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:01 WrapperNode [2020-12-23 08:15:01,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 08:15:01,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 08:15:01,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 08:15:01,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 08:15:01,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:01" (1/1) ... [2020-12-23 08:15:01,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:01" (1/1) ... [2020-12-23 08:15:01,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 08:15:01,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 08:15:01,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 08:15:01,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 08:15:01,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:01" (1/1) ... [2020-12-23 08:15:01,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:01" (1/1) ... [2020-12-23 08:15:01,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:01" (1/1) ... [2020-12-23 08:15:01,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:01" (1/1) ... [2020-12-23 08:15:01,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:01" (1/1) ... [2020-12-23 08:15:01,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:01" (1/1) ... [2020-12-23 08:15:01,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:01" (1/1) ... [2020-12-23 08:15:01,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 08:15:01,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 08:15:01,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 08:15:01,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 08:15:01,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:01" (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 [2020-12-23 08:15:01,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 08:15:01,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 08:15:01,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 08:15:01,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 08:15:02,256 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 08:15:02,256 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-23 08:15:02,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:15:02 BoogieIcfgContainer [2020-12-23 08:15:02,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 08:15:02,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 08:15:02,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 08:15:02,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 08:15:02,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 08:15:01" (1/3) ... [2020-12-23 08:15:02,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc234ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:15:02, skipping insertion in model container [2020-12-23 08:15:02,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:01" (2/3) ... [2020-12-23 08:15:02,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc234ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:15:02, skipping insertion in model container [2020-12-23 08:15:02,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:15:02" (3/3) ... [2020-12-23 08:15:02,267 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound5.c [2020-12-23 08:15:02,274 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 08:15:02,279 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-23 08:15:02,299 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-23 08:15:02,326 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 08:15:02,327 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 08:15:02,327 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 08:15:02,327 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 08:15:02,327 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 08:15:02,327 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 08:15:02,327 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 08:15:02,327 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 08:15:02,344 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-23 08:15:02,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 08:15:02,349 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:02,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 08:15:02,351 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:02,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:02,357 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2020-12-23 08:15:02,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:02,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998798352] [2020-12-23 08:15:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:02,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998798352] [2020-12-23 08:15:02,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:15:02,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 08:15:02,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421622585] [2020-12-23 08:15:02,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 08:15:02,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:02,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 08:15:02,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 08:15:02,544 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-23 08:15:02,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:02,565 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-12-23 08:15:02,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 08:15:02,566 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-23 08:15:02,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:02,576 INFO L225 Difference]: With dead ends: 62 [2020-12-23 08:15:02,577 INFO L226 Difference]: Without dead ends: 28 [2020-12-23 08:15:02,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 08:15:02,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-23 08:15:02,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-23 08:15:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 08:15:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-12-23 08:15:02,618 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-12-23 08:15:02,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:02,618 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-12-23 08:15:02,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 08:15:02,618 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-12-23 08:15:02,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 08:15:02,619 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:02,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 08:15:02,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 08:15:02,620 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:02,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:02,621 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-23 08:15:02,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:02,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805345924] [2020-12-23 08:15:02,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:02,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805345924] [2020-12-23 08:15:02,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:15:02,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 08:15:02,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701639468] [2020-12-23 08:15:02,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 08:15:02,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:02,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 08:15:02,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 08:15:02,724 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-12-23 08:15:02,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:02,871 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-12-23 08:15:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 08:15:02,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-23 08:15:02,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:02,873 INFO L225 Difference]: With dead ends: 55 [2020-12-23 08:15:02,873 INFO L226 Difference]: Without dead ends: 51 [2020-12-23 08:15:02,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 08:15:02,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-23 08:15:02,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2020-12-23 08:15:02,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-23 08:15:02,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-12-23 08:15:02,885 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2020-12-23 08:15:02,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:02,886 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-12-23 08:15:02,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 08:15:02,886 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-12-23 08:15:02,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 08:15:02,887 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:02,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:02,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 08:15:02,888 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:02,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:02,888 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-23 08:15:02,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:02,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505706206] [2020-12-23 08:15:02,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:02,906 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:02,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041042980] [2020-12-23 08:15:02,906 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 [2020-12-23 08:15:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:02,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 08:15:02,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:03,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505706206] [2020-12-23 08:15:03,230 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:03,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041042980] [2020-12-23 08:15:03,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:15:03,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 08:15:03,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644912497] [2020-12-23 08:15:03,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:15:03,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:03,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:15:03,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:15:03,238 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2020-12-23 08:15:03,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:03,408 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-12-23 08:15:03,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 08:15:03,409 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-23 08:15:03,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:03,410 INFO L225 Difference]: With dead ends: 54 [2020-12-23 08:15:03,410 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 08:15:03,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:15:03,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 08:15:03,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-12-23 08:15:03,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 08:15:03,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-23 08:15:03,419 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 8 [2020-12-23 08:15:03,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:03,420 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-23 08:15:03,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:15:03,420 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-23 08:15:03,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 08:15:03,421 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:03,421 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:03,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 08:15:03,636 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:03,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:03,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1265507748, now seen corresponding path program 1 times [2020-12-23 08:15:03,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:03,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223597802] [2020-12-23 08:15:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:03,662 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:03,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171766244] [2020-12-23 08:15:03,663 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 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 [2020-12-23 08:15:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:03,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 08:15:03,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:03,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:03,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223597802] [2020-12-23 08:15:03,822 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:03,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171766244] [2020-12-23 08:15:03,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:03,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 08:15:03,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784645349] [2020-12-23 08:15:03,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 08:15:03,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:03,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 08:15:03,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 08:15:03,825 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 5 states. [2020-12-23 08:15:03,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:03,970 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-12-23 08:15:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:15:03,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 08:15:03,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:03,972 INFO L225 Difference]: With dead ends: 62 [2020-12-23 08:15:03,972 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 08:15:03,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:15:03,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 08:15:03,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2020-12-23 08:15:03,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 08:15:03,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-12-23 08:15:03,983 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-12-23 08:15:03,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:03,983 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-12-23 08:15:03,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 08:15:03,983 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-12-23 08:15:03,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 08:15:03,984 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:03,984 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:04,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:04,199 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:04,200 INFO L82 PathProgramCache]: Analyzing trace with hash -677045505, now seen corresponding path program 1 times [2020-12-23 08:15:04,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:04,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864305219] [2020-12-23 08:15:04,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:04,217 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:04,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096225525] [2020-12-23 08:15:04,218 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 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 [2020-12-23 08:15:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:04,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 08:15:04,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:04,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864305219] [2020-12-23 08:15:04,458 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:04,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096225525] [2020-12-23 08:15:04,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:04,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 08:15:04,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834682961] [2020-12-23 08:15:04,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 08:15:04,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:04,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 08:15:04,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:15:04,462 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 7 states. [2020-12-23 08:15:04,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:04,680 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2020-12-23 08:15:04,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:15:04,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-23 08:15:04,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:04,702 INFO L225 Difference]: With dead ends: 61 [2020-12-23 08:15:04,702 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 08:15:04,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 08:15:04,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 08:15:04,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-12-23 08:15:04,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-23 08:15:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-23 08:15:04,712 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 16 [2020-12-23 08:15:04,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:04,712 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-23 08:15:04,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 08:15:04,712 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-23 08:15:04,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 08:15:04,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:04,714 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-23 08:15:04,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:04,927 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:04,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:04,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1785416430, now seen corresponding path program 2 times [2020-12-23 08:15:04,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:04,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978064848] [2020-12-23 08:15:04,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:04,942 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:04,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295813472] [2020-12-23 08:15:04,943 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 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 [2020-12-23 08:15:04,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 08:15:04,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:15:05,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 08:15:05,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:05,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978064848] [2020-12-23 08:15:05,085 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:05,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295813472] [2020-12-23 08:15:05,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:05,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 08:15:05,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988545912] [2020-12-23 08:15:05,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:15:05,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:05,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:15:05,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:15:05,095 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2020-12-23 08:15:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:05,233 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-12-23 08:15:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 08:15:05,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-23 08:15:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:05,235 INFO L225 Difference]: With dead ends: 70 [2020-12-23 08:15:05,235 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 08:15:05,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 08:15:05,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 08:15:05,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-12-23 08:15:05,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 08:15:05,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-12-23 08:15:05,245 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 22 [2020-12-23 08:15:05,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:05,246 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-12-23 08:15:05,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:15:05,246 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-12-23 08:15:05,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 08:15:05,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:05,247 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-23 08:15:05,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:05,461 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:05,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:05,462 INFO L82 PathProgramCache]: Analyzing trace with hash 2093393681, now seen corresponding path program 2 times [2020-12-23 08:15:05,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:05,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232461922] [2020-12-23 08:15:05,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:05,475 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:05,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541134075] [2020-12-23 08:15:05,476 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 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 [2020-12-23 08:15:05,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 08:15:05,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:15:05,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 08:15:05,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:05,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232461922] [2020-12-23 08:15:05,642 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:05,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541134075] [2020-12-23 08:15:05,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:05,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 08:15:05,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343387040] [2020-12-23 08:15:05,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 08:15:05,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:05,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 08:15:05,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:15:05,645 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 7 states. [2020-12-23 08:15:05,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:05,782 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2020-12-23 08:15:05,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 08:15:05,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-12-23 08:15:05,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:05,783 INFO L225 Difference]: With dead ends: 67 [2020-12-23 08:15:05,783 INFO L226 Difference]: Without dead ends: 63 [2020-12-23 08:15:05,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 08:15:05,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-23 08:15:05,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2020-12-23 08:15:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 08:15:05,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-12-23 08:15:05,792 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 24 [2020-12-23 08:15:05,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:05,792 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-12-23 08:15:05,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 08:15:05,793 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-12-23 08:15:05,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 08:15:05,793 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:05,794 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-12-23 08:15:06,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 08:15:06,009 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:06,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:06,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 1 times [2020-12-23 08:15:06,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:06,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354536089] [2020-12-23 08:15:06,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:06,023 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:06,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579815161] [2020-12-23 08:15:06,026 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 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 [2020-12-23 08:15:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:06,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 08:15:06,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:06,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354536089] [2020-12-23 08:15:06,209 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:06,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579815161] [2020-12-23 08:15:06,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:06,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 08:15:06,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451757560] [2020-12-23 08:15:06,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 08:15:06,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:06,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 08:15:06,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 08:15:06,211 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 8 states. [2020-12-23 08:15:06,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:06,349 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-12-23 08:15:06,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 08:15:06,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-23 08:15:06,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:06,351 INFO L225 Difference]: With dead ends: 65 [2020-12-23 08:15:06,351 INFO L226 Difference]: Without dead ends: 55 [2020-12-23 08:15:06,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-23 08:15:06,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-23 08:15:06,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2020-12-23 08:15:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 08:15:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-12-23 08:15:06,367 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 26 [2020-12-23 08:15:06,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:06,370 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-12-23 08:15:06,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 08:15:06,370 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-12-23 08:15:06,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 08:15:06,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:06,371 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2020-12-23 08:15:06,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:06,581 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:06,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:06,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1822162560, now seen corresponding path program 3 times [2020-12-23 08:15:06,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:06,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019604624] [2020-12-23 08:15:06,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:06,633 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:06,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343517880] [2020-12-23 08:15:06,633 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 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 [2020-12-23 08:15:06,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 08:15:06,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:15:06,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 08:15:06,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-23 08:15:06,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019604624] [2020-12-23 08:15:06,782 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:06,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343517880] [2020-12-23 08:15:06,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:06,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 08:15:06,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297859486] [2020-12-23 08:15:06,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 08:15:06,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:06,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 08:15:06,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 08:15:06,787 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 5 states. [2020-12-23 08:15:06,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:06,844 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-12-23 08:15:06,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 08:15:06,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-23 08:15:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:06,845 INFO L225 Difference]: With dead ends: 52 [2020-12-23 08:15:06,845 INFO L226 Difference]: Without dead ends: 48 [2020-12-23 08:15:06,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:15:06,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-23 08:15:06,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-12-23 08:15:06,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-23 08:15:06,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-12-23 08:15:06,853 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 30 [2020-12-23 08:15:06,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:06,853 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-12-23 08:15:06,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 08:15:06,853 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-12-23 08:15:06,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 08:15:06,854 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:06,855 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2020-12-23 08:15:07,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:07,068 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:07,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:07,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1248592163, now seen corresponding path program 3 times [2020-12-23 08:15:07,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:07,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957058217] [2020-12-23 08:15:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:07,081 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:07,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [233029938] [2020-12-23 08:15:07,081 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 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 [2020-12-23 08:15:07,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 08:15:07,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:15:07,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 08:15:07,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:32,553 WARN L197 SmtUtils]: Spent 25.26 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-23 08:15:40,690 WARN L197 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-23 08:15:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-23 08:15:42,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957058217] [2020-12-23 08:15:42,733 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:42,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233029938] [2020-12-23 08:15:42,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:42,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 08:15:42,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283092262] [2020-12-23 08:15:42,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 08:15:42,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:42,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 08:15:42,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=59, Unknown=3, NotChecked=0, Total=90 [2020-12-23 08:15:42,735 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 10 states. [2020-12-23 08:15:56,382 WARN L197 SmtUtils]: Spent 13.63 s on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2020-12-23 08:17:41,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:17:41,306 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-12-23 08:17:41,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:17:41,307 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-12-23 08:17:41,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:17:41,308 INFO L225 Difference]: With dead ends: 53 [2020-12-23 08:17:41,308 INFO L226 Difference]: Without dead ends: 49 [2020-12-23 08:17:41,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 84.7s TimeCoverageRelationStatistics Valid=47, Invalid=79, Unknown=6, NotChecked=0, Total=132 [2020-12-23 08:17:41,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-23 08:17:41,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2020-12-23 08:17:41,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-23 08:17:41,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-23 08:17:41,318 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 32 [2020-12-23 08:17:41,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:17:41,318 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-23 08:17:41,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 08:17:41,318 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-23 08:17:41,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 08:17:41,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:17:41,319 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2020-12-23 08:17:41,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 08:17:41,521 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:17:41,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:17:41,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1601348966, now seen corresponding path program 2 times [2020-12-23 08:17:41,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:17:41,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005886902] [2020-12-23 08:17:41,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:17:41,544 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:17:41,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264114239] [2020-12-23 08:17:41,544 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 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 [2020-12-23 08:17:41,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 08:17:41,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:17:41,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 08:17:41,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:17:41,797 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-23 08:17:41,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005886902] [2020-12-23 08:17:41,797 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:17:41,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264114239] [2020-12-23 08:17:41,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:17:41,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 08:17:41,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560852281] [2020-12-23 08:17:41,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 08:17:41,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:17:41,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 08:17:41,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:17:41,800 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 7 states. [2020-12-23 08:17:52,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:17:52,292 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-12-23 08:17:52,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 08:17:52,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-12-23 08:17:52,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:17:52,294 INFO L225 Difference]: With dead ends: 44 [2020-12-23 08:17:52,294 INFO L226 Difference]: Without dead ends: 42 [2020-12-23 08:17:52,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-12-23 08:17:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-23 08:17:52,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-23 08:17:52,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-23 08:17:52,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-12-23 08:17:52,303 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 34 [2020-12-23 08:17:52,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:17:52,303 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-12-23 08:17:52,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 08:17:52,303 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-12-23 08:17:52,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 08:17:52,304 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:17:52,304 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:17:52,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:17:52,508 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:17:52,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:17:52,509 INFO L82 PathProgramCache]: Analyzing trace with hash -746038783, now seen corresponding path program 1 times [2020-12-23 08:17:52,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:17:52,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084560316] [2020-12-23 08:17:52,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:17:52,523 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:17:52,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124161652] [2020-12-23 08:17:52,524 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:17:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:17:52,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 08:17:52,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:17:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:17:52,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084560316] [2020-12-23 08:17:52,709 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:17:52,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124161652] [2020-12-23 08:17:52,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:17:52,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 08:17:52,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773371179] [2020-12-23 08:17:52,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 08:17:52,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:17:52,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 08:17:52,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:17:52,711 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 7 states. [2020-12-23 08:17:52,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:17:52,770 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-12-23 08:17:52,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 08:17:52,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-12-23 08:17:52,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:17:52,772 INFO L225 Difference]: With dead ends: 52 [2020-12-23 08:17:52,772 INFO L226 Difference]: Without dead ends: 44 [2020-12-23 08:17:52,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-23 08:17:52,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-23 08:17:52,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-12-23 08:17:52,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-23 08:17:52,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-23 08:17:52,781 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 35 [2020-12-23 08:17:52,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:17:52,781 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-23 08:17:52,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 08:17:52,782 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-23 08:17:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 08:17:52,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:17:52,783 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:17:52,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:17:52,994 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:17:52,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:17:52,995 INFO L82 PathProgramCache]: Analyzing trace with hash -977613196, now seen corresponding path program 1 times [2020-12-23 08:17:52,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:17:52,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619452446] [2020-12-23 08:17:52,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:17:53,006 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:17:53,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504463752] [2020-12-23 08:17:53,007 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:17:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:17:53,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 08:17:53,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:17:53,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619452446] [2020-12-23 08:17:53,172 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:17:53,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504463752] [2020-12-23 08:17:53,173 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-23 08:17:53,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:17:53,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 08:17:53,173 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 08:17:53,173 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 08:17:53,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 08:17:53,412 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 08:17:53,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 08:17:53 BoogieIcfgContainer [2020-12-23 08:17:53,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 08:17:53,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 08:17:53,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 08:17:53,413 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 08:17:53,414 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:15:02" (3/4) ... [2020-12-23 08:17:53,417 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 08:17:53,417 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 08:17:53,418 INFO L168 Benchmark]: Toolchain (without parser) took 171953.08 ms. Allocated memory was 163.6 MB in the beginning and 211.8 MB in the end (delta: 48.2 MB). Free memory was 139.2 MB in the beginning and 84.6 MB in the end (delta: 54.6 MB). Peak memory consumption was 104.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:17:53,419 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 163.6 MB. Free memory is still 138.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 08:17:53,419 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.71 ms. Allocated memory is still 163.6 MB. Free memory was 139.0 MB in the beginning and 129.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 08:17:53,420 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.79 ms. Allocated memory is still 163.6 MB. Free memory was 129.1 MB in the beginning and 127.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:17:53,420 INFO L168 Benchmark]: Boogie Preprocessor took 24.05 ms. Allocated memory is still 163.6 MB. Free memory was 127.6 MB in the beginning and 126.6 MB in the end (delta: 957.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:17:53,421 INFO L168 Benchmark]: RCFGBuilder took 431.75 ms. Allocated memory is still 163.6 MB. Free memory was 126.4 MB in the beginning and 111.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-23 08:17:53,422 INFO L168 Benchmark]: TraceAbstraction took 171152.85 ms. Allocated memory was 163.6 MB in the beginning and 211.8 MB in the end (delta: 48.2 MB). Free memory was 111.3 MB in the beginning and 84.6 MB in the end (delta: 26.7 MB). Peak memory consumption was 75.6 MB. Max. memory is 8.0 GB. [2020-12-23 08:17:53,422 INFO L168 Benchmark]: Witness Printer took 4.03 ms. Allocated memory is still 211.8 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 08:17:53,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 163.6 MB. Free memory is still 138.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 293.71 ms. Allocated memory is still 163.6 MB. Free memory was 139.0 MB in the beginning and 129.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.79 ms. Allocated memory is still 163.6 MB. Free memory was 129.1 MB in the beginning and 127.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.05 ms. Allocated memory is still 163.6 MB. Free memory was 127.6 MB in the beginning and 126.6 MB in the end (delta: 957.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 431.75 ms. Allocated memory is still 163.6 MB. Free memory was 126.4 MB in the beginning and 111.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 171152.85 ms. Allocated memory was 163.6 MB in the beginning and 211.8 MB in the end (delta: 48.2 MB). Free memory was 111.3 MB in the beginning and 84.6 MB in the end (delta: 26.7 MB). Peak memory consumption was 75.6 MB. Max. memory is 8.0 GB. * Witness Printer took 4.03 ms. Allocated memory is still 211.8 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] int counter = 0; [L22] int n; [L23] long long a, s, t; [L24] n = __VERIFIER_nondet_int() [L26] a = 0 [L27] s = 1 [L28] t = 1 [L30] EXPR counter++ [L30] COND TRUE counter++<5 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<5 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<5 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<5 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND TRUE !(s <= n) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 171.0s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 130.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 237 SDtfs, 296 SDslu, 504 SDs, 0 SdLazy, 614 SolverSat, 171 SolverUnsat, 33 SolverUnknown, 0 SolverNotchecked, 80.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 190 SyntacticMatches, 5 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 85.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 58 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 36.9s InterpolantComputationTime, 253 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 34521 SizeOfPredicates, 56 NumberOfNonLiveVariables, 951 ConjunctsInSsa, 192 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 113/209 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...