/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/divbin_unwindbound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:34:08,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:34:08,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:34:08,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:34:08,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:34:08,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:34:08,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:34:08,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:34:08,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:34:08,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:34:08,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:34:08,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:34:08,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:34:08,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:34:08,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:34:08,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:34:08,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:34:08,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:34:08,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:34:08,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:34:08,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:34:08,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:34:08,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:34:08,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:34:08,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:34:08,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:34:08,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:34:08,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:34:08,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:34:08,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:34:08,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:34:08,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:34:08,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:34:08,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:34:08,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:34:08,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:34:08,221 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:34:08,249 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:34:08,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:34:08,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:34:08,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:34:08,252 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:34:08,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:34:08,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:34:08,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:34:08,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:34:08,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:34:08,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:34:08,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:34:08,254 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:34:08,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:34:08,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:34:08,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:34:08,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:34:08,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:34:08,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:34:08,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:34:08,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:34:08,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:34:08,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:34:08,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:34:08,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:34:08,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:34:08,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:34:08,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:34:08,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:34:08,641 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:34:08,642 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:34:08,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i [2020-12-23 07:34:08,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3d64aec2d/a9b06e4c99ab498d871fd118761fb0ae/FLAG8b1ab9041 [2020-12-23 07:34:09,270 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:34:09,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i [2020-12-23 07:34:09,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3d64aec2d/a9b06e4c99ab498d871fd118761fb0ae/FLAG8b1ab9041 [2020-12-23 07:34:09,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3d64aec2d/a9b06e4c99ab498d871fd118761fb0ae [2020-12-23 07:34:09,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:34:09,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:34:09,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:34:09,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:34:09,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:34:09,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:34:09" (1/1) ... [2020-12-23 07:34:09,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@900409e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:34:09, skipping insertion in model container [2020-12-23 07:34:09,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:34:09" (1/1) ... [2020-12-23 07:34:09,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:34:09,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:34:09,860 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/divbin_unwindbound2.i[950,963] 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,] [2020-12-23 07:34:09,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:34:09,900 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:34:09,915 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/divbin_unwindbound2.i[950,963] 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,] [2020-12-23 07:34:09,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:34:09,956 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:34:09,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:34:09 WrapperNode [2020-12-23 07:34:09,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:34:09,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:34:09,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:34:09,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:34:09,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:34:09" (1/1) ... [2020-12-23 07:34:09,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:34:09" (1/1) ... [2020-12-23 07:34:10,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:34:10,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:34:10,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:34:10,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:34:10,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:34:09" (1/1) ... [2020-12-23 07:34:10,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:34:09" (1/1) ... [2020-12-23 07:34:10,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:34:09" (1/1) ... [2020-12-23 07:34:10,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:34:09" (1/1) ... [2020-12-23 07:34:10,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:34:09" (1/1) ... [2020-12-23 07:34:10,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:34:09" (1/1) ... [2020-12-23 07:34:10,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:34:09" (1/1) ... [2020-12-23 07:34:10,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:34:10,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:34:10,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:34:10,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:34:10,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:34:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:34:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:34:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:34:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:34:10,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:34:10,575 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:34:10,575 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-23 07:34:10,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:34:10 BoogieIcfgContainer [2020-12-23 07:34:10,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:34:10,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:34:10,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:34:10,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:34:10,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:34:09" (1/3) ... [2020-12-23 07:34:10,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbfca8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:34:10, skipping insertion in model container [2020-12-23 07:34:10,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:34:09" (2/3) ... [2020-12-23 07:34:10,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbfca8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:34:10, skipping insertion in model container [2020-12-23 07:34:10,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:34:10" (3/3) ... [2020-12-23 07:34:10,616 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound2.i [2020-12-23 07:34:10,633 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:34:10,644 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 07:34:10,681 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 07:34:10,713 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:34:10,713 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:34:10,713 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:34:10,713 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:34:10,713 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:34:10,714 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:34:10,714 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:34:10,714 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:34:10,732 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-12-23 07:34:10,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:34:10,739 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:34:10,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:34:10,740 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:34:10,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:34:10,748 INFO L82 PathProgramCache]: Analyzing trace with hash 344827834, now seen corresponding path program 1 times [2020-12-23 07:34:10,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:34:10,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182995576] [2020-12-23 07:34:10,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:34:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:34:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:34:10,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182995576] [2020-12-23 07:34:10,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:34:10,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:34:10,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385393190] [2020-12-23 07:34:10,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:34:10,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:34:10,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:34:10,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:34:10,950 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-12-23 07:34:10,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:34:10,971 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2020-12-23 07:34:10,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:34:10,973 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 07:34:10,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:34:10,985 INFO L225 Difference]: With dead ends: 45 [2020-12-23 07:34:10,985 INFO L226 Difference]: Without dead ends: 20 [2020-12-23 07:34:10,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:34:11,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-23 07:34:11,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-23 07:34:11,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 07:34:11,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-12-23 07:34:11,028 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11 [2020-12-23 07:34:11,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:34:11,028 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-12-23 07:34:11,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:34:11,029 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-12-23 07:34:11,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 07:34:11,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:34:11,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:34:11,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:34:11,030 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:34:11,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:34:11,031 INFO L82 PathProgramCache]: Analyzing trace with hash 514095505, now seen corresponding path program 1 times [2020-12-23 07:34:11,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:34:11,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816900114] [2020-12-23 07:34:11,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:34:11,053 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:34:11,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136508990] [2020-12-23 07:34:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:34:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:34:11,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 07:34:11,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:34:11,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:34:11,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816900114] [2020-12-23 07:34:11,367 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:34:11,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136508990] [2020-12-23 07:34:11,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:34:11,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:34:11,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484481450] [2020-12-23 07:34:11,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:34:11,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:34:11,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:34:11,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:34:11,379 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 4 states. [2020-12-23 07:34:11,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:34:11,432 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2020-12-23 07:34:11,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:34:11,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-23 07:34:11,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:34:11,436 INFO L225 Difference]: With dead ends: 33 [2020-12-23 07:34:11,436 INFO L226 Difference]: Without dead ends: 22 [2020-12-23 07:34:11,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:34:11,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-23 07:34:11,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-23 07:34:11,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-23 07:34:11,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-12-23 07:34:11,448 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 12 [2020-12-23 07:34:11,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:34:11,450 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-12-23 07:34:11,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:34:11,450 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-12-23 07:34:11,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:34:11,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:34:11,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:34:11,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:34:11,668 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:34:11,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:34:11,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1194113768, now seen corresponding path program 1 times [2020-12-23 07:34:11,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:34:11,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047765243] [2020-12-23 07:34:11,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:34:11,692 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:34:11,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262350160] [2020-12-23 07:34:11,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:34:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:34:11,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:34:11,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:34:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:34:11,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047765243] [2020-12-23 07:34:11,922 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:34:11,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262350160] [2020-12-23 07:34:11,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:34:11,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 07:34:11,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147470771] [2020-12-23 07:34:11,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:34:11,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:34:11,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:34:11,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:34:11,926 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 7 states. [2020-12-23 07:34:12,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:34:12,230 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-12-23 07:34:12,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:34:12,231 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-12-23 07:34:12,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:34:12,232 INFO L225 Difference]: With dead ends: 40 [2020-12-23 07:34:12,233 INFO L226 Difference]: Without dead ends: 33 [2020-12-23 07:34:12,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:34:12,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-23 07:34:12,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2020-12-23 07:34:12,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 07:34:12,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-12-23 07:34:12,248 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 13 [2020-12-23 07:34:12,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:34:12,248 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-12-23 07:34:12,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:34:12,249 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-12-23 07:34:12,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:34:12,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:34:12,250 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:34:12,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:34:12,462 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:34:12,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:34:12,464 INFO L82 PathProgramCache]: Analyzing trace with hash 483460221, now seen corresponding path program 1 times [2020-12-23 07:34:12,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:34:12,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044925648] [2020-12-23 07:34:12,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:34:12,484 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:34:12,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071685647] [2020-12-23 07:34:12,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:34:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:34:12,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:34:12,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:34:12,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:34:12,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044925648] [2020-12-23 07:34:12,643 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:34:12,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071685647] [2020-12-23 07:34:12,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:34:12,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 07:34:12,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910261895] [2020-12-23 07:34:12,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:34:12,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:34:12,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:34:12,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:34:12,650 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 5 states. [2020-12-23 07:34:12,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:34:12,687 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2020-12-23 07:34:12,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:34:12,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-23 07:34:12,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:34:12,689 INFO L225 Difference]: With dead ends: 42 [2020-12-23 07:34:12,689 INFO L226 Difference]: Without dead ends: 31 [2020-12-23 07:34:12,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:34:12,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-23 07:34:12,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-12-23 07:34:12,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 07:34:12,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-12-23 07:34:12,696 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 15 [2020-12-23 07:34:12,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:34:12,696 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-12-23 07:34:12,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:34:12,696 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-12-23 07:34:12,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 07:34:12,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:34:12,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:34:12,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:34:12,911 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:34:12,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:34:12,913 INFO L82 PathProgramCache]: Analyzing trace with hash -2143807572, now seen corresponding path program 1 times [2020-12-23 07:34:12,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:34:12,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310562564] [2020-12-23 07:34:12,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:34:12,937 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:34:12,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398843788] [2020-12-23 07:34:12,938 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 [2020-12-23 07:34:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:34:12,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:34:12,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:34:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:34:13,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310562564] [2020-12-23 07:34:13,048 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:34:13,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398843788] [2020-12-23 07:34:13,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:34:13,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:34:13,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809446937] [2020-12-23 07:34:13,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:34:13,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:34:13,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:34:13,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:34:13,050 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 6 states. [2020-12-23 07:34:13,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:34:13,093 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-12-23 07:34:13,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:34:13,095 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-23 07:34:13,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:34:13,096 INFO L225 Difference]: With dead ends: 43 [2020-12-23 07:34:13,096 INFO L226 Difference]: Without dead ends: 25 [2020-12-23 07:34:13,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:34:13,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-23 07:34:13,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-12-23 07:34:13,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-23 07:34:13,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-12-23 07:34:13,109 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 16 [2020-12-23 07:34:13,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:34:13,110 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-12-23 07:34:13,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:34:13,110 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-12-23 07:34:13,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:34:13,111 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:34:13,111 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:34:13,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:34:13,317 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:34:13,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:34:13,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2033562946, now seen corresponding path program 1 times [2020-12-23 07:34:13,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:34:13,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472260087] [2020-12-23 07:34:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:34:13,344 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:34:13,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738654780] [2020-12-23 07:34:13,345 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:34:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:34:13,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:34:13,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:34:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:34:13,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472260087] [2020-12-23 07:34:13,675 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:34:13,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738654780] [2020-12-23 07:34:13,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:34:13,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:34:13,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692307148] [2020-12-23 07:34:13,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:34:13,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:34:13,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:34:13,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:34:13,679 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 9 states. [2020-12-23 07:34:14,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:34:14,126 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-12-23 07:34:14,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:34:14,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-12-23 07:34:14,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:34:14,128 INFO L225 Difference]: With dead ends: 31 [2020-12-23 07:34:14,128 INFO L226 Difference]: Without dead ends: 20 [2020-12-23 07:34:14,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:34:14,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-23 07:34:14,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-23 07:34:14,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 07:34:14,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2020-12-23 07:34:14,137 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 17 [2020-12-23 07:34:14,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:34:14,137 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2020-12-23 07:34:14,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:34:14,138 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2020-12-23 07:34:14,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 07:34:14,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:34:14,139 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:34:14,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 07:34:14,353 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:34:14,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:34:14,355 INFO L82 PathProgramCache]: Analyzing trace with hash 348654179, now seen corresponding path program 1 times [2020-12-23 07:34:14,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:34:14,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054059859] [2020-12-23 07:34:14,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:34:14,386 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:34:14,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937484781] [2020-12-23 07:34:14,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:34:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:34:14,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:34:14,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:34:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:34:14,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054059859] [2020-12-23 07:34:14,463 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:34:14,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937484781] [2020-12-23 07:34:14,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:34:14,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:34:14,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706722211] [2020-12-23 07:34:14,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 07:34:14,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:34:14,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 07:34:14,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 07:34:14,466 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 3 states. [2020-12-23 07:34:14,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:34:14,481 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2020-12-23 07:34:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 07:34:14,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-23 07:34:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:34:14,482 INFO L225 Difference]: With dead ends: 20 [2020-12-23 07:34:14,482 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 07:34:14,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 07:34:14,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 07:34:14,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 07:34:14,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 07:34:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 07:34:14,484 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-12-23 07:34:14,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:34:14,487 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 07:34:14,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 07:34:14,487 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 07:34:14,487 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 07:34:14,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:34:14,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 07:34:14,920 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-23 07:34:14,967 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-23 07:34:14,967 INFO L189 CegarLoopUtils]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-12-23 07:34:14,967 INFO L185 CegarLoopUtils]: At program point L19-2(line 42) the Hoare annotation is: (let ((.cse0 (mod ULTIMATE.start_main_~b~0 4294967296))) (and (< (mod ULTIMATE.start_main_~r~0 4294967296) .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~q~0 0) (< .cse0 2147483647) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0) (<= 2 ~counter~0))) [2020-12-23 07:34:14,967 INFO L189 CegarLoopUtils]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2020-12-23 07:34:14,968 INFO L189 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-12-23 07:34:14,968 INFO L189 CegarLoopUtils]: For program point L15-1(lines 15 17) no Hoare annotation was computed. [2020-12-23 07:34:14,968 INFO L192 CegarLoopUtils]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2020-12-23 07:34:14,968 INFO L189 CegarLoopUtils]: For program point L40(lines 40 49) no Hoare annotation was computed. [2020-12-23 07:34:14,968 INFO L189 CegarLoopUtils]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2020-12-23 07:34:14,968 INFO L189 CegarLoopUtils]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2020-12-23 07:34:14,969 INFO L185 CegarLoopUtils]: At program point L36-3(lines 36 39) the Hoare annotation is: (let ((.cse4 (mod ULTIMATE.start_main_~B~0 4294967296))) (let ((.cse0 (<= 1 .cse4)) (.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and .cse0 (<= ~counter~0 0) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) .cse1 (< (mod ULTIMATE.start_main_~b~0 4294967296) 2147483647) .cse2 .cse3 (<= 0 ~counter~0)) (and (<= 1 ~counter~0) .cse0 (< (div (+ (mod ULTIMATE.start_main_~r~0 4294967296) (- 1)) (- 4294967296)) 1) (< .cse4 2147483647) .cse1 .cse2 .cse3)))) [2020-12-23 07:34:14,969 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 07:34:14,969 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 07:34:14,969 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 07:34:14,969 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-23 07:34:14,969 INFO L189 CegarLoopUtils]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-12-23 07:34:14,969 INFO L189 CegarLoopUtils]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2020-12-23 07:34:14,970 INFO L189 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2020-12-23 07:34:14,970 INFO L189 CegarLoopUtils]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-12-23 07:34:14,970 INFO L189 CegarLoopUtils]: For program point L45(lines 45 48) no Hoare annotation was computed. [2020-12-23 07:34:14,970 INFO L189 CegarLoopUtils]: For program point L45-2(lines 26 52) no Hoare annotation was computed. [2020-12-23 07:34:14,970 INFO L189 CegarLoopUtils]: For program point L37(line 37) no Hoare annotation was computed. [2020-12-23 07:34:14,970 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 07:34:14,970 INFO L192 CegarLoopUtils]: At program point L51(lines 26 52) the Hoare annotation is: true [2020-12-23 07:34:14,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:34:14 BoogieIcfgContainer [2020-12-23 07:34:14,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:34:14,990 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:34:14,990 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:34:14,991 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:34:14,991 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:34:10" (3/4) ... [2020-12-23 07:34:14,994 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 07:34:15,005 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-23 07:34:15,006 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 07:34:15,006 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:34:15,006 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:34:15,058 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/divbin_unwindbound2.i-witness.graphml [2020-12-23 07:34:15,058 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:34:15,060 INFO L168 Benchmark]: Toolchain (without parser) took 5412.69 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 126.0 MB in the beginning and 97.3 MB in the end (delta: 28.7 MB). Peak memory consumption was 70.6 MB. Max. memory is 8.0 GB. [2020-12-23 07:34:15,061 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 123.6 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:34:15,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.15 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:34:15,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.53 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 113.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:34:15,063 INFO L168 Benchmark]: Boogie Preprocessor took 63.59 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 112.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:34:15,063 INFO L168 Benchmark]: RCFGBuilder took 492.97 ms. Allocated memory is still 151.0 MB. Free memory was 112.8 MB in the beginning and 132.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-12-23 07:34:15,064 INFO L168 Benchmark]: TraceAbstraction took 4407.79 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 132.7 MB in the beginning and 99.9 MB in the end (delta: 32.8 MB). Peak memory consumption was 73.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:34:15,065 INFO L168 Benchmark]: Witness Printer took 68.32 ms. Allocated memory is still 191.9 MB. Free memory was 99.9 MB in the beginning and 97.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:34:15,069 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 123.6 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 311.15 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 59.53 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 113.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.59 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 112.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 492.97 ms. Allocated memory is still 151.0 MB. Free memory was 112.8 MB in the beginning and 132.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4407.79 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 132.7 MB in the beginning and 99.9 MB in the end (delta: 32.8 MB). Peak memory consumption was 73.7 MB. Max. memory is 8.0 GB. * Witness Printer took 68.32 ms. Allocated memory is still 191.9 MB. Free memory was 99.9 MB in the beginning and 97.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 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: 42]: Loop Invariant Derived loop invariant: ((((((r % 4294967296 < b % 4294967296 && 1 == cond) && B == b) && q == 0) && b % 4294967296 < 2147483647) && cond == 1) && A == r) && 2 <= counter - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((1 <= B % 4294967296 && counter <= 0) && B == b) && q == 0) && b % 4294967296 < 2147483647) && cond == 1) && A == r) && 0 <= counter) || ((((((1 <= counter && 1 <= B % 4294967296) && (r % 4294967296 + -1) / -4294967296 < 1) && B % 4294967296 < 2147483647) && q == 0) && cond == 1) && A == r) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 166 SDslu, 194 SDs, 0 SdLazy, 150 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 95 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 6790 SizeOfPredicates, 21 NumberOfNonLiveVariables, 432 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 5/10 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...