/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/divbin2_valuebound10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:27:27,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:27:27,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:27:27,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:27:27,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:27:27,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:27:27,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:27:27,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:27:27,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:27:27,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:27:27,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:27:27,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:27:27,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:27:27,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:27:27,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:27:27,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:27:27,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:27:27,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:27:27,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:27:27,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:27:27,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:27:27,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:27:27,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:27:27,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:27:27,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:27:27,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:27:27,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:27:27,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:27:27,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:27:27,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:27:27,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:27:27,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:27:27,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:27:27,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:27:27,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:27:27,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:27:27,298 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:27:27,323 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:27:27,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:27:27,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:27:27,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:27:27,325 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:27:27,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:27:27,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:27:27,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:27:27,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:27:27,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:27:27,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:27:27,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:27:27,327 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:27:27,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:27:27,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:27:27,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:27:27,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:27:27,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:27:27,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:27:27,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:27:27,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:27:27,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:27:27,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:27:27,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:27:27,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:27:27,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:27:27,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:27:27,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:27:27,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:27:27,752 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:27:27,755 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:27:27,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound10.i [2021-01-06 17:27:27,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c43757a21/c4759087c04d46c6b8dd295946071e80/FLAG2d93e557e [2021-01-06 17:27:28,449 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:27:28,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound10.i [2021-01-06 17:27:28,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c43757a21/c4759087c04d46c6b8dd295946071e80/FLAG2d93e557e [2021-01-06 17:27:28,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c43757a21/c4759087c04d46c6b8dd295946071e80 [2021-01-06 17:27:28,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:27:28,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:27:28,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:27:28,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:27:28,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:27:28,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:27:28" (1/1) ... [2021-01-06 17:27:28,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5f21c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:27:28, skipping insertion in model container [2021-01-06 17:27:28,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:27:28" (1/1) ... [2021-01-06 17:27:28,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:27:28,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:27:28,996 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/divbin2_valuebound10.i[951,964] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 17:27:29,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:27:29,024 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:27:29,039 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/divbin2_valuebound10.i[951,964] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 17:27:29,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:27:29,063 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:27:29,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:27:29 WrapperNode [2021-01-06 17:27:29,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:27:29,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:27:29,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:27:29,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:27:29,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:27:29" (1/1) ... [2021-01-06 17:27:29,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:27:29" (1/1) ... [2021-01-06 17:27:29,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:27:29,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:27:29,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:27:29,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:27:29,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:27:29" (1/1) ... [2021-01-06 17:27:29,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:27:29" (1/1) ... [2021-01-06 17:27:29,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:27:29" (1/1) ... [2021-01-06 17:27:29,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:27:29" (1/1) ... [2021-01-06 17:27:29,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:27:29" (1/1) ... [2021-01-06 17:27:29,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:27:29" (1/1) ... [2021-01-06 17:27:29,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:27:29" (1/1) ... [2021-01-06 17:27:29,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:27:29,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:27:29,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:27:29,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:27:29,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:27:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:27:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:27:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:27:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:27:29,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:27:29,523 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:27:29,524 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-01-06 17:27:29,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:27:29 BoogieIcfgContainer [2021-01-06 17:27:29,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:27:29,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:27:29,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:27:29,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:27:29,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:27:28" (1/3) ... [2021-01-06 17:27:29,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e03644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:27:29, skipping insertion in model container [2021-01-06 17:27:29,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:27:29" (2/3) ... [2021-01-06 17:27:29,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e03644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:27:29, skipping insertion in model container [2021-01-06 17:27:29,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:27:29" (3/3) ... [2021-01-06 17:27:29,549 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound10.i [2021-01-06 17:27:29,556 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:27:29,560 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:27:29,581 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:27:29,609 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:27:29,610 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:27:29,610 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:27:29,610 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:27:29,610 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:27:29,610 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:27:29,610 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:27:29,611 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:27:29,626 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-01-06 17:27:29,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:27:29,632 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:29,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:29,634 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:29,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:29,641 INFO L82 PathProgramCache]: Analyzing trace with hash 119520859, now seen corresponding path program 1 times [2021-01-06 17:27:29,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:29,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372690063] [2021-01-06 17:27:29,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:27:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:27:29,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372690063] [2021-01-06 17:27:29,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:27:29,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:27:29,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231131037] [2021-01-06 17:27:29,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:27:29,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:29,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:27:29,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:27:29,879 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2021-01-06 17:27:29,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:29,899 INFO L93 Difference]: Finished difference Result 37 states and 54 transitions. [2021-01-06 17:27:29,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:27:29,900 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 17:27:29,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:29,910 INFO L225 Difference]: With dead ends: 37 [2021-01-06 17:27:29,910 INFO L226 Difference]: Without dead ends: 16 [2021-01-06 17:27:29,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:27:29,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-01-06 17:27:29,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-01-06 17:27:29,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-01-06 17:27:29,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-01-06 17:27:29,949 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2021-01-06 17:27:29,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:29,950 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-01-06 17:27:29,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:27:29,950 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-01-06 17:27:29,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:27:29,951 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:29,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:29,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:27:29,952 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:29,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:29,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1186643548, now seen corresponding path program 1 times [2021-01-06 17:27:29,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:29,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436315907] [2021-01-06 17:27:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:29,977 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:29,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894534469] [2021-01-06 17:27:29,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:27:30,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:27:30,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:27:30,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436315907] [2021-01-06 17:27:30,354 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:30,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894534469] [2021-01-06 17:27:30,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:27:30,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 17:27:30,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801241883] [2021-01-06 17:27:30,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:27:30,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:30,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:27:30,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:27:30,359 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2021-01-06 17:27:30,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:30,708 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-01-06 17:27:30,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:27:30,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2021-01-06 17:27:30,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:30,711 INFO L225 Difference]: With dead ends: 29 [2021-01-06 17:27:30,711 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:27:30,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:27:30,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:27:30,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-01-06 17:27:30,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-01-06 17:27:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-01-06 17:27:30,726 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 9 [2021-01-06 17:27:30,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:30,727 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-01-06 17:27:30,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:27:30,728 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-01-06 17:27:30,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:27:30,729 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:30,729 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:30,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:27:30,944 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:30,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:30,946 INFO L82 PathProgramCache]: Analyzing trace with hash -2054849417, now seen corresponding path program 1 times [2021-01-06 17:27:30,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:30,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555301872] [2021-01-06 17:27:30,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:30,975 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:30,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487762765] [2021-01-06 17:27:30,975 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 [2021-01-06 17:27:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:27:31,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:27:31,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:27:31,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555301872] [2021-01-06 17:27:31,246 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:31,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487762765] [2021-01-06 17:27:31,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:27:31,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:27:31,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246537972] [2021-01-06 17:27:31,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:27:31,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:31,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:27:31,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:27:31,250 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 7 states. [2021-01-06 17:27:31,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:31,733 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2021-01-06 17:27:31,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:27:31,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2021-01-06 17:27:31,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:31,736 INFO L225 Difference]: With dead ends: 34 [2021-01-06 17:27:31,736 INFO L226 Difference]: Without dead ends: 28 [2021-01-06 17:27:31,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:27:31,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-01-06 17:27:31,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-01-06 17:27:31,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-06 17:27:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-01-06 17:27:31,743 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 11 [2021-01-06 17:27:31,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:31,744 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-01-06 17:27:31,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:27:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-01-06 17:27:31,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:27:31,745 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:31,745 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:31,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:31,960 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:31,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:31,962 INFO L82 PathProgramCache]: Analyzing trace with hash -580289007, now seen corresponding path program 1 times [2021-01-06 17:27:31,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:31,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490933166] [2021-01-06 17:27:31,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:31,980 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:31,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792428211] [2021-01-06 17:27:31,981 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 [2021-01-06 17:27:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:27:32,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:27:32,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:27:32,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490933166] [2021-01-06 17:27:32,059 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:32,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792428211] [2021-01-06 17:27:32,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:27:32,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:27:32,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656515177] [2021-01-06 17:27:32,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 17:27:32,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:32,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 17:27:32,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 17:27:32,062 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 3 states. [2021-01-06 17:27:32,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:32,087 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-01-06 17:27:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 17:27:32,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2021-01-06 17:27:32,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:32,089 INFO L225 Difference]: With dead ends: 35 [2021-01-06 17:27:32,089 INFO L226 Difference]: Without dead ends: 22 [2021-01-06 17:27:32,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 17:27:32,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-01-06 17:27:32,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-01-06 17:27:32,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-06 17:27:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-01-06 17:27:32,094 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2021-01-06 17:27:32,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:32,094 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-01-06 17:27:32,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 17:27:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-01-06 17:27:32,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:27:32,095 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:32,095 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:32,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:32,310 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:32,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:32,311 INFO L82 PathProgramCache]: Analyzing trace with hash 505525932, now seen corresponding path program 1 times [2021-01-06 17:27:32,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:32,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245508427] [2021-01-06 17:27:32,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:32,327 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:32,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856014803] [2021-01-06 17:27:32,328 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:27:32,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-06 17:27:32,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:27:32,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245508427] [2021-01-06 17:27:32,578 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:32,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856014803] [2021-01-06 17:27:32,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:27:32,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:27:32,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681492590] [2021-01-06 17:27:32,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:27:32,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:32,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:27:32,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:27:32,581 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 10 states. [2021-01-06 17:27:33,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:33,091 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2021-01-06 17:27:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:27:33,092 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2021-01-06 17:27:33,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:33,093 INFO L225 Difference]: With dead ends: 44 [2021-01-06 17:27:33,093 INFO L226 Difference]: Without dead ends: 38 [2021-01-06 17:27:33,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:27:33,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-01-06 17:27:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2021-01-06 17:27:33,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-06 17:27:33,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-01-06 17:27:33,100 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 15 [2021-01-06 17:27:33,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:33,101 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-01-06 17:27:33,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:27:33,101 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-01-06 17:27:33,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:27:33,102 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:33,102 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:33,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:33,316 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:33,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:33,318 INFO L82 PathProgramCache]: Analyzing trace with hash 296629383, now seen corresponding path program 2 times [2021-01-06 17:27:33,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:33,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349872490] [2021-01-06 17:27:33,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:33,334 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:33,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990631197] [2021-01-06 17:27:33,337 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 [2021-01-06 17:27:33,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:27:33,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:27:33,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-06 17:27:33,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:27:33,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349872490] [2021-01-06 17:27:33,591 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:33,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990631197] [2021-01-06 17:27:33,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:27:33,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:27:33,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535390966] [2021-01-06 17:27:33,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:27:33,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:33,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:27:33,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:27:33,603 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 10 states. [2021-01-06 17:27:33,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:33,886 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2021-01-06 17:27:33,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:27:33,887 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2021-01-06 17:27:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:33,888 INFO L225 Difference]: With dead ends: 59 [2021-01-06 17:27:33,888 INFO L226 Difference]: Without dead ends: 53 [2021-01-06 17:27:33,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:27:33,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-01-06 17:27:33,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 33. [2021-01-06 17:27:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-06 17:27:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2021-01-06 17:27:33,896 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 17 [2021-01-06 17:27:33,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:33,896 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2021-01-06 17:27:33,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:27:33,896 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2021-01-06 17:27:33,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:27:33,897 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:33,897 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:34,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:27:34,111 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:34,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:34,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1023135329, now seen corresponding path program 3 times [2021-01-06 17:27:34,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:34,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794451163] [2021-01-06 17:27:34,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:34,133 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:34,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063219266] [2021-01-06 17:27:34,134 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:34,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:27:34,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:27:34,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 17:27:34,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:27:34,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794451163] [2021-01-06 17:27:34,447 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:34,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063219266] [2021-01-06 17:27:34,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:27:34,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:27:34,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138111154] [2021-01-06 17:27:34,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:27:34,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:34,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:27:34,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:27:34,450 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 6 states. [2021-01-06 17:27:34,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:34,514 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2021-01-06 17:27:34,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:27:34,515 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2021-01-06 17:27:34,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:34,518 INFO L225 Difference]: With dead ends: 57 [2021-01-06 17:27:34,518 INFO L226 Difference]: Without dead ends: 33 [2021-01-06 17:27:34,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:27:34,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-01-06 17:27:34,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-01-06 17:27:34,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-06 17:27:34,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2021-01-06 17:27:34,524 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 19 [2021-01-06 17:27:34,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:34,525 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2021-01-06 17:27:34,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:27:34,525 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2021-01-06 17:27:34,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:27:34,526 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:34,526 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:34,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:34,740 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:34,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:34,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1410508706, now seen corresponding path program 4 times [2021-01-06 17:27:34,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:34,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145731306] [2021-01-06 17:27:34,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:34,755 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:34,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260811439] [2021-01-06 17:27:34,756 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:34,841 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:27:34,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:27:34,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:27:34,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-06 17:27:34,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145731306] [2021-01-06 17:27:34,943 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:34,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260811439] [2021-01-06 17:27:34,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:27:34,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:27:34,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143831801] [2021-01-06 17:27:34,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:27:34,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:34,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:27:34,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:27:34,945 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 7 states. [2021-01-06 17:27:35,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:35,161 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2021-01-06 17:27:35,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:27:35,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2021-01-06 17:27:35,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:35,163 INFO L225 Difference]: With dead ends: 46 [2021-01-06 17:27:35,163 INFO L226 Difference]: Without dead ends: 40 [2021-01-06 17:27:35,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:27:35,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-01-06 17:27:35,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2021-01-06 17:27:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 17:27:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-01-06 17:27:35,169 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2021-01-06 17:27:35,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:35,169 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-01-06 17:27:35,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:27:35,169 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-01-06 17:27:35,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 17:27:35,170 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:35,170 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:35,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:35,386 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:35,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:35,387 INFO L82 PathProgramCache]: Analyzing trace with hash 2014308028, now seen corresponding path program 5 times [2021-01-06 17:27:35,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:35,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939408889] [2021-01-06 17:27:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:35,402 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:35,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127418014] [2021-01-06 17:27:35,403 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:35,650 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-01-06 17:27:35,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:27:35,652 WARN L261 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 45 conjunts are in the unsatisfiable core [2021-01-06 17:27:35,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:36,003 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2021-01-06 17:27:36,125 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:27:36,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939408889] [2021-01-06 17:27:36,126 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:36,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127418014] [2021-01-06 17:27:36,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:27:36,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:27:36,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185644805] [2021-01-06 17:27:36,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:27:36,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:36,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:27:36,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:27:36,128 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 12 states. [2021-01-06 17:27:36,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:36,567 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2021-01-06 17:27:36,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:27:36,568 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2021-01-06 17:27:36,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:36,569 INFO L225 Difference]: With dead ends: 74 [2021-01-06 17:27:36,569 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 17:27:36,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:27:36,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 17:27:36,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-01-06 17:27:36,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-06 17:27:36,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2021-01-06 17:27:36,577 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 21 [2021-01-06 17:27:36,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:36,577 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2021-01-06 17:27:36,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:27:36,577 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2021-01-06 17:27:36,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 17:27:36,578 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:36,578 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:36,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 17:27:36,786 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:36,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:36,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1048532055, now seen corresponding path program 6 times [2021-01-06 17:27:36,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:36,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813560431] [2021-01-06 17:27:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:36,802 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:36,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685778987] [2021-01-06 17:27:36,803 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:37,305 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-01-06 17:27:37,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:27:37,307 WARN L261 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 52 conjunts are in the unsatisfiable core [2021-01-06 17:27:37,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:27:37,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813560431] [2021-01-06 17:27:37,761 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:37,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685778987] [2021-01-06 17:27:37,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:27:37,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-01-06 17:27:37,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633163678] [2021-01-06 17:27:37,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 17:27:37,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:37,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 17:27:37,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:27:37,764 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 14 states. [2021-01-06 17:27:38,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:38,322 INFO L93 Difference]: Finished difference Result 92 states and 110 transitions. [2021-01-06 17:27:38,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:27:38,323 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2021-01-06 17:27:38,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:38,324 INFO L225 Difference]: With dead ends: 92 [2021-01-06 17:27:38,324 INFO L226 Difference]: Without dead ends: 68 [2021-01-06 17:27:38,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:27:38,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-01-06 17:27:38,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 51. [2021-01-06 17:27:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-01-06 17:27:38,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2021-01-06 17:27:38,345 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 23 [2021-01-06 17:27:38,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:38,345 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2021-01-06 17:27:38,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 17:27:38,346 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2021-01-06 17:27:38,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 17:27:38,346 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:38,347 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:38,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:38,557 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:38,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:38,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1791789455, now seen corresponding path program 7 times [2021-01-06 17:27:38,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:38,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504056237] [2021-01-06 17:27:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:38,569 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:38,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375223431] [2021-01-06 17:27:38,569 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-01-06 17:27:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:27:38,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 17:27:38,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:38,960 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:27:38,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504056237] [2021-01-06 17:27:38,960 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:38,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375223431] [2021-01-06 17:27:38,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:27:38,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:27:38,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857326067] [2021-01-06 17:27:38,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:27:38,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:38,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:27:38,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:27:38,962 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 8 states. [2021-01-06 17:27:39,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:39,081 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2021-01-06 17:27:39,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:27:39,082 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2021-01-06 17:27:39,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:39,084 INFO L225 Difference]: With dead ends: 72 [2021-01-06 17:27:39,084 INFO L226 Difference]: Without dead ends: 47 [2021-01-06 17:27:39,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:27:39,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-01-06 17:27:39,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-01-06 17:27:39,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-06 17:27:39,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2021-01-06 17:27:39,092 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 25 [2021-01-06 17:27:39,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:39,093 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2021-01-06 17:27:39,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:27:39,093 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2021-01-06 17:27:39,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 17:27:39,094 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:39,094 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:39,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:39,303 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:39,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:39,304 INFO L82 PathProgramCache]: Analyzing trace with hash 650757938, now seen corresponding path program 8 times [2021-01-06 17:27:39,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:39,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82161429] [2021-01-06 17:27:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:39,321 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:39,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873919246] [2021-01-06 17:27:39,322 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 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 [2021-01-06 17:27:39,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:27:39,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:27:39,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 17:27:39,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:27:39,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82161429] [2021-01-06 17:27:39,885 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:39,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873919246] [2021-01-06 17:27:39,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:27:39,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:27:39,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195663211] [2021-01-06 17:27:39,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:27:39,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:39,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:27:39,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:27:39,887 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 13 states. [2021-01-06 17:27:40,782 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-01-06 17:27:40,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:40,990 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2021-01-06 17:27:40,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:27:40,990 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2021-01-06 17:27:40,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:40,991 INFO L225 Difference]: With dead ends: 98 [2021-01-06 17:27:40,991 INFO L226 Difference]: Without dead ends: 79 [2021-01-06 17:27:40,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-01-06 17:27:40,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-01-06 17:27:40,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 55. [2021-01-06 17:27:40,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-06 17:27:41,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-01-06 17:27:41,000 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 25 [2021-01-06 17:27:41,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:41,000 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-01-06 17:27:41,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:27:41,001 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-01-06 17:27:41,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 17:27:41,002 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:41,002 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:41,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:27:41,205 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:41,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:41,206 INFO L82 PathProgramCache]: Analyzing trace with hash 650817520, now seen corresponding path program 1 times [2021-01-06 17:27:41,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:41,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822095810] [2021-01-06 17:27:41,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:41,222 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:41,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614528793] [2021-01-06 17:27:41,222 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:27:41,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 43 conjunts are in the unsatisfiable core [2021-01-06 17:27:41,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:41,753 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:27:41,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822095810] [2021-01-06 17:27:41,753 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:41,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614528793] [2021-01-06 17:27:41,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:27:41,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:27:41,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861169960] [2021-01-06 17:27:41,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:27:41,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:41,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:27:41,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:27:41,756 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 12 states. [2021-01-06 17:27:42,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:42,643 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2021-01-06 17:27:42,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 17:27:42,644 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2021-01-06 17:27:42,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:42,645 INFO L225 Difference]: With dead ends: 84 [2021-01-06 17:27:42,645 INFO L226 Difference]: Without dead ends: 78 [2021-01-06 17:27:42,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2021-01-06 17:27:42,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-01-06 17:27:42,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 55. [2021-01-06 17:27:42,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-06 17:27:42,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-01-06 17:27:42,653 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 25 [2021-01-06 17:27:42,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:42,654 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-01-06 17:27:42,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:27:42,654 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-01-06 17:27:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:27:42,655 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:42,655 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:42,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:27:42,861 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:42,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:42,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1800626548, now seen corresponding path program 9 times [2021-01-06 17:27:42,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:42,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187991841] [2021-01-06 17:27:42,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:42,873 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:42,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125820078] [2021-01-06 17:27:42,874 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:44,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-06 17:27:44,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:27:44,032 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 65 conjunts are in the unsatisfiable core [2021-01-06 17:27:44,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:44,502 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2021-01-06 17:27:44,700 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-01-06 17:27:45,681 WARN L197 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2021-01-06 17:27:45,874 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:27:45,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187991841] [2021-01-06 17:27:45,875 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:45,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125820078] [2021-01-06 17:27:45,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:27:45,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-01-06 17:27:45,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585361760] [2021-01-06 17:27:45,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 17:27:45,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:45,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 17:27:45,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:27:45,877 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 18 states. [2021-01-06 17:27:46,978 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2021-01-06 17:27:47,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:47,693 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2021-01-06 17:27:47,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 17:27:47,694 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 27 [2021-01-06 17:27:47,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:47,695 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:27:47,695 INFO L226 Difference]: Without dead ends: 71 [2021-01-06 17:27:47,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2021-01-06 17:27:47,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-01-06 17:27:47,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 59. [2021-01-06 17:27:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-06 17:27:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2021-01-06 17:27:47,704 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 27 [2021-01-06 17:27:47,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:47,704 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2021-01-06 17:27:47,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 17:27:47,704 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2021-01-06 17:27:47,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:27:47,705 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:47,705 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:47,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:27:47,912 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:47,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:47,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1684994122, now seen corresponding path program 2 times [2021-01-06 17:27:47,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:47,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113588240] [2021-01-06 17:27:47,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:47,924 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:47,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636173829] [2021-01-06 17:27:47,925 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:48,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:27:48,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:27:48,144 WARN L261 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 57 conjunts are in the unsatisfiable core [2021-01-06 17:27:48,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:27:48,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113588240] [2021-01-06 17:27:48,893 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:48,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636173829] [2021-01-06 17:27:48,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:27:48,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-01-06 17:27:48,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193896489] [2021-01-06 17:27:48,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 17:27:48,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:48,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 17:27:48,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:27:48,895 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 17 states. [2021-01-06 17:27:50,101 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2021-01-06 17:27:50,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:50,432 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2021-01-06 17:27:50,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 17:27:50,434 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 27 [2021-01-06 17:27:50,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:50,435 INFO L225 Difference]: With dead ends: 88 [2021-01-06 17:27:50,435 INFO L226 Difference]: Without dead ends: 63 [2021-01-06 17:27:50,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2021-01-06 17:27:50,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-01-06 17:27:50,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2021-01-06 17:27:50,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-01-06 17:27:50,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-01-06 17:27:50,442 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 27 [2021-01-06 17:27:50,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:50,442 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-01-06 17:27:50,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 17:27:50,442 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-01-06 17:27:50,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:27:50,446 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:50,446 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:50,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:50,647 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:50,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:50,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1782482341, now seen corresponding path program 3 times [2021-01-06 17:27:50,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:50,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3359761] [2021-01-06 17:27:50,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:50,666 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:50,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [778780001] [2021-01-06 17:27:50,666 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:28:01,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-06 17:28:01,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:28:01,493 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 56 conjunts are in the unsatisfiable core [2021-01-06 17:28:01,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:28:02,060 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:28:02,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3359761] [2021-01-06 17:28:02,061 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:28:02,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778780001] [2021-01-06 17:28:02,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:28:02,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-01-06 17:28:02,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614415256] [2021-01-06 17:28:02,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 17:28:02,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:28:02,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 17:28:02,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:28:02,063 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 14 states. [2021-01-06 17:28:03,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:28:03,693 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2021-01-06 17:28:03,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 17:28:03,693 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 29 [2021-01-06 17:28:03,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:28:03,694 INFO L225 Difference]: With dead ends: 96 [2021-01-06 17:28:03,694 INFO L226 Difference]: Without dead ends: 72 [2021-01-06 17:28:03,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2021-01-06 17:28:03,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-01-06 17:28:03,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59. [2021-01-06 17:28:03,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-06 17:28:03,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2021-01-06 17:28:03,703 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 29 [2021-01-06 17:28:03,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:28:03,703 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2021-01-06 17:28:03,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 17:28:03,703 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2021-01-06 17:28:03,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:28:03,704 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:28:03,704 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:28:03,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:28:03,912 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:28:03,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:28:03,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1444972891, now seen corresponding path program 4 times [2021-01-06 17:28:03,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:28:03,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105569771] [2021-01-06 17:28:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:28:03,924 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:28:03,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106951786] [2021-01-06 17:28:03,925 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:28:04,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:28:04,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:28:04,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 17:28:04,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:28:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 17:28:04,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105569771] [2021-01-06 17:28:04,132 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:28:04,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106951786] [2021-01-06 17:28:04,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:28:04,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:28:04,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615440291] [2021-01-06 17:28:04,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:28:04,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:28:04,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:28:04,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:28:04,137 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 8 states. [2021-01-06 17:28:04,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:28:04,295 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2021-01-06 17:28:04,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:28:04,296 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2021-01-06 17:28:04,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:28:04,297 INFO L225 Difference]: With dead ends: 89 [2021-01-06 17:28:04,297 INFO L226 Difference]: Without dead ends: 64 [2021-01-06 17:28:04,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:28:04,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-06 17:28:04,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2021-01-06 17:28:04,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-06 17:28:04,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2021-01-06 17:28:04,313 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 29 [2021-01-06 17:28:04,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:28:04,313 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-01-06 17:28:04,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:28:04,313 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2021-01-06 17:28:04,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:28:04,317 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:28:04,317 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:28:04,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 17:28:04,524 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:28:04,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:28:04,525 INFO L82 PathProgramCache]: Analyzing trace with hash 571459137, now seen corresponding path program 10 times [2021-01-06 17:28:04,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:28:04,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416404856] [2021-01-06 17:28:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:28:04,543 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:28:04,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286105562] [2021-01-06 17:28:04,543 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:28:04,752 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:28:04,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:28:04,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:28:04,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:28:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:28:05,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416404856] [2021-01-06 17:28:05,131 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:28:05,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286105562] [2021-01-06 17:28:05,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:28:05,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:28:05,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659950293] [2021-01-06 17:28:05,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:28:05,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:28:05,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:28:05,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:28:05,133 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 13 states. [2021-01-06 17:28:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:28:05,649 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-01-06 17:28:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:28:05,650 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2021-01-06 17:28:05,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:28:05,651 INFO L225 Difference]: With dead ends: 64 [2021-01-06 17:28:05,651 INFO L226 Difference]: Without dead ends: 39 [2021-01-06 17:28:05,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-01-06 17:28:05,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-01-06 17:28:05,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-01-06 17:28:05,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-06 17:28:05,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-01-06 17:28:05,656 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 31 [2021-01-06 17:28:05,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:28:05,656 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-01-06 17:28:05,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:28:05,657 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-01-06 17:28:05,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:28:05,657 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:28:05,657 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:28:05,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 17:28:05,861 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:28:05,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:28:05,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2142664922, now seen corresponding path program 5 times [2021-01-06 17:28:05,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:28:05,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141588597] [2021-01-06 17:28:05,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:28:05,872 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:28:05,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853141539] [2021-01-06 17:28:05,872 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:30:57,675 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-06 17:30:57,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:30:57,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:30:57,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:30:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:30:58,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141588597] [2021-01-06 17:30:58,503 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:30:58,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853141539] [2021-01-06 17:30:58,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:30:58,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-01-06 17:30:58,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017209688] [2021-01-06 17:30:58,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 17:30:58,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:30:58,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 17:30:58,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:30:58,506 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 14 states. [2021-01-06 17:30:59,565 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2021-01-06 17:30:59,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:30:59,866 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2021-01-06 17:30:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:30:59,868 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2021-01-06 17:30:59,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:30:59,869 INFO L225 Difference]: With dead ends: 62 [2021-01-06 17:30:59,869 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 17:30:59,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2021-01-06 17:30:59,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 17:30:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2021-01-06 17:30:59,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-01-06 17:30:59,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-01-06 17:30:59,875 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 33 [2021-01-06 17:30:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:30:59,876 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-01-06 17:30:59,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 17:30:59,876 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-01-06 17:30:59,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:30:59,880 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:30:59,880 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:00,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:00,094 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:00,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:00,095 INFO L82 PathProgramCache]: Analyzing trace with hash 2142724504, now seen corresponding path program 6 times [2021-01-06 17:31:00,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:00,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639779774] [2021-01-06 17:31:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:00,104 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:00,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427110329] [2021-01-06 17:31:00,105 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:02,180 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-06 17:31:02,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:31:02,185 WARN L261 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 67 conjunts are in the unsatisfiable core [2021-01-06 17:31:02,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:03,618 WARN L197 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2021-01-06 17:31:03,853 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:31:03,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639779774] [2021-01-06 17:31:03,853 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:03,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427110329] [2021-01-06 17:31:03,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:03,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-01-06 17:31:03,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834359385] [2021-01-06 17:31:03,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 17:31:03,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:03,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 17:31:03,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:31:03,855 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 17 states. [2021-01-06 17:31:05,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:05,455 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-01-06 17:31:05,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 17:31:05,457 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 33 [2021-01-06 17:31:05,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:05,457 INFO L225 Difference]: With dead ends: 52 [2021-01-06 17:31:05,457 INFO L226 Difference]: Without dead ends: 39 [2021-01-06 17:31:05,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2021-01-06 17:31:05,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-01-06 17:31:05,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-01-06 17:31:05,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-06 17:31:05,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-01-06 17:31:05,463 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 33 [2021-01-06 17:31:05,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:05,463 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-01-06 17:31:05,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 17:31:05,464 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-01-06 17:31:05,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:31:05,464 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:05,464 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:05,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:05,671 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:05,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:05,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1333318296, now seen corresponding path program 7 times [2021-01-06 17:31:05,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:05,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718250545] [2021-01-06 17:31:05,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:05,683 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:05,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749253507] [2021-01-06 17:31:05,684 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:06,112 WARN L261 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 59 conjunts are in the unsatisfiable core [2021-01-06 17:31:06,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:07,043 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:31:07,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718250545] [2021-01-06 17:31:07,044 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:07,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749253507] [2021-01-06 17:31:07,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:07,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-01-06 17:31:07,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925802635] [2021-01-06 17:31:07,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 17:31:07,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:07,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 17:31:07,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:31:07,046 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 17 states. [2021-01-06 17:31:08,480 WARN L197 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2021-01-06 17:31:09,037 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2021-01-06 17:31:09,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:09,396 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-01-06 17:31:09,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 17:31:09,397 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 33 [2021-01-06 17:31:09,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:09,397 INFO L225 Difference]: With dead ends: 44 [2021-01-06 17:31:09,398 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:31:09,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2021-01-06 17:31:09,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:31:09,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:31:09,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:31:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:31:09,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-01-06 17:31:09,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:09,400 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:31:09,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 17:31:09,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:31:09,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:31:09,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-06 17:31:09,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:31:09,962 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 253 [2021-01-06 17:31:10,455 WARN L197 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-01-06 17:31:38,799 WARN L197 SmtUtils]: Spent 28.34 s on a formula simplification. DAG size of input: 244 DAG size of output: 173 [2021-01-06 17:31:38,804 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-01-06 17:31:38,804 INFO L189 CegarLoopUtils]: For program point L19(lines 19 22) no Hoare annotation was computed. [2021-01-06 17:31:38,805 INFO L185 CegarLoopUtils]: At program point L19-2(line 40) the Hoare annotation is: (let ((.cse22 (* ULTIMATE.start_main_~r~0 4294967295))) (let ((.cse47 (mod (+ ULTIMATE.start_main_~A~0 .cse22) 4294967296)) (.cse19 (mod ULTIMATE.start_main_~A~0 4294967296)) (.cse48 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0))) (let ((.cse24 (* ULTIMATE.start_main_~B~0 4)) (.cse28 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0 8))) (.cse1 (mod ULTIMATE.start_main_~r~0 4294967296)) (.cse14 (= ULTIMATE.start_main_~q~0 1)) (.cse16 (= ULTIMATE.start_main_~A~0 .cse48)) (.cse26 (mod .cse48 4294967296)) (.cse29 (<= 8 .cse19)) (.cse30 (= ULTIMATE.start_main_~q~0 2)) (.cse31 (= ULTIMATE.start_main_~b~0 4)) (.cse18 (mod ULTIMATE.start_main_~b~0 4294967296)) (.cse0 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 8))) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (div (mod (div .cse47 2) 4294967296) 2)) (.cse17 (<= .cse19 10)) (.cse5 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse32 (* ULTIMATE.start_main_~B~0 8))) (let ((.cse8 (= ULTIMATE.start_main_~b~0 .cse32)) (.cse9 (= ULTIMATE.start_main_~b~0 8)) (.cse20 (let ((.cse35 (= ULTIMATE.start_main_~b~0 2)) (.cse33 (= ULTIMATE.start_main_~b~0 1))) (let ((.cse34 (let ((.cse36 (= ULTIMATE.start_main_~q~0 5)) (.cse41 (= ULTIMATE.start_main_~q~0 4))) (or (and .cse35 .cse36 .cse29 .cse3 .cse28 .cse17 .cse5 (<= .cse18 (mod (+ ULTIMATE.start_main_~A~0 4294967288) 4294967296))) (and (let ((.cse46 (mod (+ ULTIMATE.start_main_~A~0 4294967292) 4294967296))) (let ((.cse40 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 4))) (.cse38 (<= 2 .cse46)) (.cse37 (<= 4 .cse19)) (.cse39 (< .cse19 8)) (.cse44 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0 4))) (.cse42 (<= 2 .cse19)) (.cse45 (= ULTIMATE.start_main_~q~0 3)) (.cse43 (< .cse19 4))) (or (and .cse33 (= ULTIMATE.start_main_~q~0 6) .cse3 .cse37 (= (+ ULTIMATE.start_main_~r~0 6) ULTIMATE.start_main_~A~0) .cse38 .cse39) (and .cse35 .cse30 .cse3 .cse37 .cse40 .cse39) (and .cse33 (< .cse1 2) .cse3 .cse40 .cse41) (and .cse33 .cse3 .cse37 (= ULTIMATE.start_main_~q~0 7) .cse38 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0 6)) .cse39 (<= .cse18 (mod (+ ULTIMATE.start_main_~A~0 4294967290) 4294967296))) (and .cse33 .cse42 .cse30 .cse3 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 2)) .cse43) (and .cse44 .cse35 .cse3 .cse37 .cse45 (<= .cse18 .cse46) .cse39) (and .cse14 .cse3 .cse16 .cse17 .cse5) (and .cse44 .cse33 .cse36 .cse3 (< .cse26 2)) (and .cse29 .cse0 .cse30 .cse3 .cse31 .cse17) (and .cse33 (<= .cse18 (mod (+ ULTIMATE.start_main_~A~0 4294967294) 4294967296)) .cse42 .cse3 .cse45 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0 2)) .cse43)))) .cse5) (and .cse0 .cse3 (= ULTIMATE.start_main_~b~0 .cse6) (<= .cse47 .cse19) .cse17 .cse5 .cse41))))) (or (and .cse33 .cse34) (and .cse35 .cse34))))) (.cse21 (<= .cse1 10)) (.cse7 (< .cse1 .cse18)) (.cse23 (<= .cse18 .cse26)) (.cse4 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0)) (.cse15 (mod .cse32 4294967296)) (.cse13 (= ULTIMATE.start_main_~B~0 1)) (.cse25 (<= (mod ULTIMATE.start_main_~B~0 4294967296) .cse1)) (.cse12 (mod .cse24 4294967296)) (.cse10 (= ULTIMATE.start_main_~q~0 0)) (.cse11 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (let ((.cse2 (mod .cse6 4294967296))) (and (= ULTIMATE.start_main_~q~0 8) .cse0 (< .cse1 .cse2) (= ULTIMATE.start_main_~b~0 (div .cse2 2)) .cse3 .cse4 .cse5)) (and .cse7 .cse3 .cse8 .cse9 .cse10 .cse5 .cse11 (<= .cse12 .cse1)) (and .cse13 .cse14 (= ULTIMATE.start_main_~b~0 (div .cse15 2)) .cse3 .cse16 .cse17 (<= .cse18 .cse19) .cse5 (< .cse19 .cse15)) (and .cse13 .cse20 .cse7) (and (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 10)) .cse3 .cse21 .cse4 (= ULTIMATE.start_main_~b~0 (div (mod (+ ULTIMATE.start_main_~A~0 .cse22 4294967288) 4294967296) 2)) .cse17 (= ULTIMATE.start_main_~q~0 10) .cse5) (and .cse14 .cse3 .cse8 .cse16 .cse9 .cse17 .cse5 .cse23) (and .cse13 .cse3 .cse4 .cse17 .cse10 .cse5 .cse11) (and .cse13 .cse20 .cse21 .cse4) (and .cse13 .cse7 (= ULTIMATE.start_main_~b~0 .cse24) .cse25 .cse3 .cse10 .cse5 .cse11) (let ((.cse27 (mod (div (mod (div (mod (+ ULTIMATE.start_main_~A~0 .cse22 (* ULTIMATE.start_main_~b~0 4294967295)) 4294967296) 2) 4294967296) 2) 4294967296))) (and (< .cse26 .cse27) (= ULTIMATE.start_main_~q~0 9) .cse3 .cse28 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 (div .cse27 2)) .cse23)) (and .cse13 .cse14 .cse3 .cse4 .cse16 .cse17 .cse5) (and .cse13 .cse29 .cse0 .cse30 .cse3 .cse31 .cse17 .cse5) (and (= ULTIMATE.start_main_~b~0 16) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~B~0 16)) .cse3 .cse17 .cse10 .cse5 .cse11 (<= .cse15 .cse1)) (and .cse13 .cse25 .cse3 (< .cse1 .cse12) .cse10 .cse5 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~b~0) .cse11)))))) [2021-01-06 17:31:38,805 INFO L189 CegarLoopUtils]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2021-01-06 17:31:38,805 INFO L189 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-01-06 17:31:38,805 INFO L192 CegarLoopUtils]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2021-01-06 17:31:38,805 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:31:38,805 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:31:38,806 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:31:38,806 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-01-06 17:31:38,806 INFO L189 CegarLoopUtils]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-01-06 17:31:38,806 INFO L189 CegarLoopUtils]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2021-01-06 17:31:38,806 INFO L192 CegarLoopUtils]: At program point L49(lines 25 50) the Hoare annotation is: true [2021-01-06 17:31:38,806 INFO L189 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-01-06 17:31:38,806 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:31:38,806 INFO L189 CegarLoopUtils]: For program point L38-1(lines 38 47) no Hoare annotation was computed. [2021-01-06 17:31:38,807 INFO L185 CegarLoopUtils]: At program point L34-2(lines 34 37) the Hoare annotation is: (let ((.cse6 (* ULTIMATE.start_main_~B~0 4)) (.cse0 (= ULTIMATE.start_main_~B~0 1)) (.cse5 (* ULTIMATE.start_main_~B~0 8)) (.cse7 (mod ULTIMATE.start_main_~r~0 4294967296)) (.cse1 (<= (mod ULTIMATE.start_main_~A~0 4294967296) 10)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse8 (* ULTIMATE.start_main_~B~0 2)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and .cse0 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) .cse1 .cse2 .cse3 .cse4) (and (= ULTIMATE.start_main_~b~0 .cse5) (= ULTIMATE.start_main_~b~0 8) .cse1 .cse2 .cse3 (<= (mod .cse6 4294967296) .cse7) .cse4) (and (= ULTIMATE.start_main_~b~0 .cse6) (= ULTIMATE.start_main_~b~0 4) .cse1 .cse2 (<= (mod .cse8 4294967296) .cse7) .cse3 .cse4) (and .cse0 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~B~0 16)) .cse1 .cse2 .cse3 .cse4 (<= (mod .cse5 4294967296) .cse7)) (and (= ULTIMATE.start_main_~b~0 2) (<= (mod ULTIMATE.start_main_~B~0 4294967296) .cse7) .cse1 .cse2 .cse3 (= .cse8 ULTIMATE.start_main_~b~0) .cse4))) [2021-01-06 17:31:38,807 INFO L189 CegarLoopUtils]: For program point L43(lines 43 46) no Hoare annotation was computed. [2021-01-06 17:31:38,807 INFO L189 CegarLoopUtils]: For program point L43-2(lines 25 50) no Hoare annotation was computed. [2021-01-06 17:31:38,807 INFO L189 CegarLoopUtils]: For program point L35(line 35) no Hoare annotation was computed. [2021-01-06 17:31:38,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:31:38 BoogieIcfgContainer [2021-01-06 17:31:38,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:31:38,872 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:31:38,872 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:31:38,872 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:31:38,873 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:27:29" (3/4) ... [2021-01-06 17:31:38,878 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:31:38,892 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-01-06 17:31:38,893 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:31:38,893 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:31:38,893 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:31:38,962 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/divbin2_valuebound10.i-witness.graphml [2021-01-06 17:31:38,962 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:31:38,963 INFO L168 Benchmark]: Toolchain (without parser) took 250161.69 ms. Allocated memory was 151.0 MB in the beginning and 222.3 MB in the end (delta: 71.3 MB). Free memory was 126.7 MB in the beginning and 199.0 MB in the end (delta: -72.3 MB). Peak memory consumption was 380.9 kB. Max. memory is 8.0 GB. [2021-01-06 17:31:38,964 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:31:38,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.09 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:31:38,964 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.41 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:31:38,965 INFO L168 Benchmark]: Boogie Preprocessor took 24.32 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 114.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:31:38,965 INFO L168 Benchmark]: RCFGBuilder took 398.32 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 101.4 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:31:38,966 INFO L168 Benchmark]: TraceAbstraction took 249340.85 ms. Allocated memory was 151.0 MB in the beginning and 222.3 MB in the end (delta: 71.3 MB). Free memory was 100.9 MB in the beginning and 203.2 MB in the end (delta: -102.3 MB). Peak memory consumption was 102.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:31:38,966 INFO L168 Benchmark]: Witness Printer took 90.56 ms. Allocated memory is still 222.3 MB. Free memory was 203.2 MB in the beginning and 199.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:31:38,968 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 260.09 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.41 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.32 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 114.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 398.32 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 101.4 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 249340.85 ms. Allocated memory was 151.0 MB in the beginning and 222.3 MB in the end (delta: 71.3 MB). Free memory was 100.9 MB in the beginning and 203.2 MB in the end (delta: -102.3 MB). Peak memory consumption was 102.1 MB. Max. memory is 8.0 GB. * Witness Printer took 90.56 ms. Allocated memory is still 222.3 MB. Free memory was 203.2 MB in the beginning and 199.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((B == 1 && B == b) && A % 4294967296 <= 10) && q == 0) && cond == 1) && A == r) || ((((((b == B * 8 && b == 8) && A % 4294967296 <= 10) && q == 0) && cond == 1) && B * 4 % 4294967296 <= r % 4294967296) && A == r)) || ((((((b == B * 4 && b == 4) && A % 4294967296 <= 10) && q == 0) && B * 2 % 4294967296 <= r % 4294967296) && cond == 1) && A == r)) || ((((((B == 1 && b == B * 16) && A % 4294967296 <= 10) && q == 0) && cond == 1) && A == r) && B * 8 % 4294967296 <= r % 4294967296)) || ((((((b == 2 && B % 4294967296 <= r % 4294967296) && A % 4294967296 <= 10) && q == 0) && cond == 1) && B * 2 == b) && A == r) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((((((((((q == 8 && A == r + 8) && r % 4294967296 < (A + r * 4294967295) % 4294967296 / 2 % 4294967296 / 2 % 4294967296) && b == (A + r * 4294967295) % 4294967296 / 2 % 4294967296 / 2 % 4294967296 / 2) && 1 == cond) && B == b) && cond == 1) || (((((((r % 4294967296 < b % 4294967296 && 1 == cond) && b == B * 8) && b == 8) && q == 0) && cond == 1) && A == r) && B * 4 % 4294967296 <= r % 4294967296)) || ((((((((B == 1 && q == 1) && b == B * 8 % 4294967296 / 2) && 1 == cond) && A == r + b) && A % 4294967296 <= 10) && b % 4294967296 <= A % 4294967296) && cond == 1) && A % 4294967296 < B * 8 % 4294967296)) || ((B == 1 && ((b == 1 && (((((((((b == 2 && q == 5) && 8 <= A % 4294967296) && 1 == cond) && A == r + b + 8) && A % 4294967296 <= 10) && cond == 1) && b % 4294967296 <= (A + 4294967288) % 4294967296) || ((((((((((((((((b == 1 && q == 6) && 1 == cond) && 4 <= A % 4294967296) && r + 6 == A) && 2 <= (A + 4294967292) % 4294967296) && A % 4294967296 < 8) || (((((b == 2 && q == 2) && 1 == cond) && 4 <= A % 4294967296) && A == r + 4) && A % 4294967296 < 8)) || ((((b == 1 && r % 4294967296 < 2) && 1 == cond) && A == r + 4) && q == 4)) || (((((((b == 1 && 1 == cond) && 4 <= A % 4294967296) && q == 7) && 2 <= (A + 4294967292) % 4294967296) && A == r + b + 6) && A % 4294967296 < 8) && b % 4294967296 <= (A + 4294967290) % 4294967296)) || (((((b == 1 && 2 <= A % 4294967296) && q == 2) && 1 == cond) && A == r + 2) && A % 4294967296 < 4)) || ((((((A == r + b + 4 && b == 2) && 1 == cond) && 4 <= A % 4294967296) && q == 3) && b % 4294967296 <= (A + 4294967292) % 4294967296) && A % 4294967296 < 8)) || ((((q == 1 && 1 == cond) && A == r + b) && A % 4294967296 <= 10) && cond == 1)) || ((((A == r + b + 4 && b == 1) && q == 5) && 1 == cond) && (r + b) % 4294967296 < 2)) || (((((8 <= A % 4294967296 && A == r + 8) && q == 2) && 1 == cond) && b == 4) && A % 4294967296 <= 10)) || ((((((b == 1 && b % 4294967296 <= (A + 4294967294) % 4294967296) && 2 <= A % 4294967296) && 1 == cond) && q == 3) && A == r + b + 2) && A % 4294967296 < 4)) && cond == 1)) || ((((((A == r + 8 && 1 == cond) && b == (A + r * 4294967295) % 4294967296 / 2 % 4294967296 / 2) && (A + r * 4294967295) % 4294967296 <= A % 4294967296) && A % 4294967296 <= 10) && cond == 1) && q == 4))) || (b == 2 && (((((((((b == 2 && q == 5) && 8 <= A % 4294967296) && 1 == cond) && A == r + b + 8) && A % 4294967296 <= 10) && cond == 1) && b % 4294967296 <= (A + 4294967288) % 4294967296) || ((((((((((((((((b == 1 && q == 6) && 1 == cond) && 4 <= A % 4294967296) && r + 6 == A) && 2 <= (A + 4294967292) % 4294967296) && A % 4294967296 < 8) || (((((b == 2 && q == 2) && 1 == cond) && 4 <= A % 4294967296) && A == r + 4) && A % 4294967296 < 8)) || ((((b == 1 && r % 4294967296 < 2) && 1 == cond) && A == r + 4) && q == 4)) || (((((((b == 1 && 1 == cond) && 4 <= A % 4294967296) && q == 7) && 2 <= (A + 4294967292) % 4294967296) && A == r + b + 6) && A % 4294967296 < 8) && b % 4294967296 <= (A + 4294967290) % 4294967296)) || (((((b == 1 && 2 <= A % 4294967296) && q == 2) && 1 == cond) && A == r + 2) && A % 4294967296 < 4)) || ((((((A == r + b + 4 && b == 2) && 1 == cond) && 4 <= A % 4294967296) && q == 3) && b % 4294967296 <= (A + 4294967292) % 4294967296) && A % 4294967296 < 8)) || ((((q == 1 && 1 == cond) && A == r + b) && A % 4294967296 <= 10) && cond == 1)) || ((((A == r + b + 4 && b == 1) && q == 5) && 1 == cond) && (r + b) % 4294967296 < 2)) || (((((8 <= A % 4294967296 && A == r + 8) && q == 2) && 1 == cond) && b == 4) && A % 4294967296 <= 10)) || ((((((b == 1 && b % 4294967296 <= (A + 4294967294) % 4294967296) && 2 <= A % 4294967296) && 1 == cond) && q == 3) && A == r + b + 2) && A % 4294967296 < 4)) && cond == 1)) || ((((((A == r + 8 && 1 == cond) && b == (A + r * 4294967295) % 4294967296 / 2 % 4294967296 / 2) && (A + r * 4294967295) % 4294967296 <= A % 4294967296) && A % 4294967296 <= 10) && cond == 1) && q == 4))))) && r % 4294967296 < b % 4294967296)) || (((((((A == r + 10 && 1 == cond) && r % 4294967296 <= 10) && B == b) && b == (A + r * 4294967295 + 4294967288) % 4294967296 / 2) && A % 4294967296 <= 10) && q == 10) && cond == 1)) || (((((((q == 1 && 1 == cond) && b == B * 8) && A == r + b) && b == 8) && A % 4294967296 <= 10) && cond == 1) && b % 4294967296 <= (r + b) % 4294967296)) || ((((((B == 1 && 1 == cond) && B == b) && A % 4294967296 <= 10) && q == 0) && cond == 1) && A == r)) || (((B == 1 && ((b == 1 && (((((((((b == 2 && q == 5) && 8 <= A % 4294967296) && 1 == cond) && A == r + b + 8) && A % 4294967296 <= 10) && cond == 1) && b % 4294967296 <= (A + 4294967288) % 4294967296) || ((((((((((((((((b == 1 && q == 6) && 1 == cond) && 4 <= A % 4294967296) && r + 6 == A) && 2 <= (A + 4294967292) % 4294967296) && A % 4294967296 < 8) || (((((b == 2 && q == 2) && 1 == cond) && 4 <= A % 4294967296) && A == r + 4) && A % 4294967296 < 8)) || ((((b == 1 && r % 4294967296 < 2) && 1 == cond) && A == r + 4) && q == 4)) || (((((((b == 1 && 1 == cond) && 4 <= A % 4294967296) && q == 7) && 2 <= (A + 4294967292) % 4294967296) && A == r + b + 6) && A % 4294967296 < 8) && b % 4294967296 <= (A + 4294967290) % 4294967296)) || (((((b == 1 && 2 <= A % 4294967296) && q == 2) && 1 == cond) && A == r + 2) && A % 4294967296 < 4)) || ((((((A == r + b + 4 && b == 2) && 1 == cond) && 4 <= A % 4294967296) && q == 3) && b % 4294967296 <= (A + 4294967292) % 4294967296) && A % 4294967296 < 8)) || ((((q == 1 && 1 == cond) && A == r + b) && A % 4294967296 <= 10) && cond == 1)) || ((((A == r + b + 4 && b == 1) && q == 5) && 1 == cond) && (r + b) % 4294967296 < 2)) || (((((8 <= A % 4294967296 && A == r + 8) && q == 2) && 1 == cond) && b == 4) && A % 4294967296 <= 10)) || ((((((b == 1 && b % 4294967296 <= (A + 4294967294) % 4294967296) && 2 <= A % 4294967296) && 1 == cond) && q == 3) && A == r + b + 2) && A % 4294967296 < 4)) && cond == 1)) || ((((((A == r + 8 && 1 == cond) && b == (A + r * 4294967295) % 4294967296 / 2 % 4294967296 / 2) && (A + r * 4294967295) % 4294967296 <= A % 4294967296) && A % 4294967296 <= 10) && cond == 1) && q == 4))) || (b == 2 && (((((((((b == 2 && q == 5) && 8 <= A % 4294967296) && 1 == cond) && A == r + b + 8) && A % 4294967296 <= 10) && cond == 1) && b % 4294967296 <= (A + 4294967288) % 4294967296) || ((((((((((((((((b == 1 && q == 6) && 1 == cond) && 4 <= A % 4294967296) && r + 6 == A) && 2 <= (A + 4294967292) % 4294967296) && A % 4294967296 < 8) || (((((b == 2 && q == 2) && 1 == cond) && 4 <= A % 4294967296) && A == r + 4) && A % 4294967296 < 8)) || ((((b == 1 && r % 4294967296 < 2) && 1 == cond) && A == r + 4) && q == 4)) || (((((((b == 1 && 1 == cond) && 4 <= A % 4294967296) && q == 7) && 2 <= (A + 4294967292) % 4294967296) && A == r + b + 6) && A % 4294967296 < 8) && b % 4294967296 <= (A + 4294967290) % 4294967296)) || (((((b == 1 && 2 <= A % 4294967296) && q == 2) && 1 == cond) && A == r + 2) && A % 4294967296 < 4)) || ((((((A == r + b + 4 && b == 2) && 1 == cond) && 4 <= A % 4294967296) && q == 3) && b % 4294967296 <= (A + 4294967292) % 4294967296) && A % 4294967296 < 8)) || ((((q == 1 && 1 == cond) && A == r + b) && A % 4294967296 <= 10) && cond == 1)) || ((((A == r + b + 4 && b == 1) && q == 5) && 1 == cond) && (r + b) % 4294967296 < 2)) || (((((8 <= A % 4294967296 && A == r + 8) && q == 2) && 1 == cond) && b == 4) && A % 4294967296 <= 10)) || ((((((b == 1 && b % 4294967296 <= (A + 4294967294) % 4294967296) && 2 <= A % 4294967296) && 1 == cond) && q == 3) && A == r + b + 2) && A % 4294967296 < 4)) && cond == 1)) || ((((((A == r + 8 && 1 == cond) && b == (A + r * 4294967295) % 4294967296 / 2 % 4294967296 / 2) && (A + r * 4294967295) % 4294967296 <= A % 4294967296) && A % 4294967296 <= 10) && cond == 1) && q == 4))))) && r % 4294967296 <= 10) && B == b)) || (((((((B == 1 && r % 4294967296 < b % 4294967296) && b == B * 4) && B % 4294967296 <= r % 4294967296) && 1 == cond) && q == 0) && cond == 1) && A == r)) || ((((((((r + b) % 4294967296 < (A + r * 4294967295 + b * 4294967295) % 4294967296 / 2 % 4294967296 / 2 % 4294967296 && q == 9) && 1 == cond) && A == r + b + 8) && B == b) && cond == 1) && b == (A + r * 4294967295 + b * 4294967295) % 4294967296 / 2 % 4294967296 / 2 % 4294967296 / 2) && b % 4294967296 <= (r + b) % 4294967296)) || ((((((B == 1 && q == 1) && 1 == cond) && B == b) && A == r + b) && A % 4294967296 <= 10) && cond == 1)) || (((((((B == 1 && 8 <= A % 4294967296) && A == r + 8) && q == 2) && 1 == cond) && b == 4) && A % 4294967296 <= 10) && cond == 1)) || (((((((b == 16 && b == B * 16) && 1 == cond) && A % 4294967296 <= 10) && q == 0) && cond == 1) && A == r) && B * 8 % 4294967296 <= r % 4294967296)) || (((((((B == 1 && B % 4294967296 <= r % 4294967296) && 1 == cond) && r % 4294967296 < B * 4 % 4294967296) && q == 0) && cond == 1) && B * 2 == b) && A == r) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 219.9s, OverallIterations: 21, TraceHistogramMax: 5, AutomataDifference: 16.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 29.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 272 SDtfs, 1033 SDslu, 1335 SDs, 0 SdLazy, 4243 SolverSat, 535 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 600 GetRequests, 246 SyntacticMatches, 13 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1093 ImplicationChecksByTransitivity, 17.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=14, 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, 21 MinimizatonAttempts, 181 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 32 NumberOfFragments, 2160 HoareAnnotationTreeSize, 4 FomulaSimplifications, 22429 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 4 FomulaSimplificationsInter, 9604 FormulaSimplificationTreeSizeReductionInter, 28.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 188.1s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 472 NumberOfCodeBlocks, 472 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 451 ConstructedInterpolants, 0 QuantifiedInterpolants, 208217 SizeOfPredicates, 140 NumberOfNonLiveVariables, 1827 ConjunctsInSsa, 724 ConjunctsInUnsatCore, 21 InterpolantComputations, 3 PerfectInterpolantSequences, 68/490 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 proved your program to be correct! Received shutdown request...