/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_unwindbound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:26:33,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:26:33,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:26:34,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:26:34,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:26:34,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:26:34,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:26:34,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:26:34,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:26:34,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:26:34,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:26:34,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:26:34,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:26:34,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:26:34,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:26:34,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:26:34,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:26:34,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:26:34,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:26:34,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:26:34,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:26:34,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:26:34,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:26:34,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:26:34,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:26:34,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:26:34,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:26:34,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:26:34,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:26:34,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:26:34,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:26:34,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:26:34,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:26:34,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:26:34,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:26:34,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:26:34,122 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 17:26:34,151 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:26:34,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:26:34,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:26:34,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:26:34,153 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:26:34,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:26:34,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:26:34,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:26:34,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:26:34,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:26:34,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:26:34,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:26:34,154 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:26:34,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:26:34,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:26:34,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:26:34,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:26:34,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:26:34,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:26:34,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:26:34,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:26:34,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:26:34,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:26:34,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:26:34,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:26:34,157 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:26:34,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:26:34,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:26:34,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:26:34,561 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:26:34,562 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:26:34,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i [2021-01-06 17:26:34,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0affe89fe/6a468e5710a644d2bc6a463d6a429b4f/FLAG2204e76b2 [2021-01-06 17:26:35,138 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:26:35,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i [2021-01-06 17:26:35,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0affe89fe/6a468e5710a644d2bc6a463d6a429b4f/FLAG2204e76b2 [2021-01-06 17:26:35,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0affe89fe/6a468e5710a644d2bc6a463d6a429b4f [2021-01-06 17:26:35,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:26:35,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:26:35,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:26:35,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:26:35,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:26:35,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:26:35" (1/1) ... [2021-01-06 17:26:35,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@903f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:26:35, skipping insertion in model container [2021-01-06 17:26:35,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:26:35" (1/1) ... [2021-01-06 17:26:35,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:26:35,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:26:35,706 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_unwindbound2.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 17:26:35,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:26:35,734 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:26:35,749 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_unwindbound2.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 17:26:35,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:26:35,773 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:26:35,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:26:35 WrapperNode [2021-01-06 17:26:35,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:26:35,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:26:35,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:26:35,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:26:35,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:26:35" (1/1) ... [2021-01-06 17:26:35,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:26:35" (1/1) ... [2021-01-06 17:26:35,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:26:35,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:26:35,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:26:35,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:26:35,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:26:35" (1/1) ... [2021-01-06 17:26:35,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:26:35" (1/1) ... [2021-01-06 17:26:35,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:26:35" (1/1) ... [2021-01-06 17:26:35,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:26:35" (1/1) ... [2021-01-06 17:26:35,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:26:35" (1/1) ... [2021-01-06 17:26:35,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:26:35" (1/1) ... [2021-01-06 17:26:35,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:26:35" (1/1) ... [2021-01-06 17:26:35,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:26:35,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:26:35,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:26:35,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:26:35,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:26:35" (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 17:26:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:26:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:26:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:26:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:26:36,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:26:36,256 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-06 17:26:36,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:26:36 BoogieIcfgContainer [2021-01-06 17:26:36,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:26:36,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:26:36,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:26:36,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:26:36,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:26:35" (1/3) ... [2021-01-06 17:26:36,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5272eacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:26:36, skipping insertion in model container [2021-01-06 17:26:36,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:26:35" (2/3) ... [2021-01-06 17:26:36,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5272eacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:26:36, skipping insertion in model container [2021-01-06 17:26:36,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:26:36" (3/3) ... [2021-01-06 17:26:36,268 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound2.i [2021-01-06 17:26:36,276 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:26:36,281 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:26:36,303 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:26:36,329 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:26:36,330 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:26:36,330 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:26:36,330 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:26:36,330 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:26:36,330 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:26:36,331 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:26:36,331 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:26:36,345 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-01-06 17:26:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:26:36,351 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:26:36,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:26:36,352 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:26:36,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:26:36,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1819218388, now seen corresponding path program 1 times [2021-01-06 17:26:36,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:26:36,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807029798] [2021-01-06 17:26:36,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:26:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:26:36,508 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 17:26:36,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807029798] [2021-01-06 17:26:36,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:26:36,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:26:36,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134456392] [2021-01-06 17:26:36,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:26:36,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:26:36,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:26:36,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:26:36,533 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2021-01-06 17:26:36,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:26:36,552 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2021-01-06 17:26:36,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:26:36,553 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-06 17:26:36,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:26:36,563 INFO L225 Difference]: With dead ends: 35 [2021-01-06 17:26:36,564 INFO L226 Difference]: Without dead ends: 16 [2021-01-06 17:26:36,567 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 17:26:36,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-01-06 17:26:36,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-01-06 17:26:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-01-06 17:26:36,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-01-06 17:26:36,602 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 7 [2021-01-06 17:26:36,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:26:36,602 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-01-06 17:26:36,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:26:36,603 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-01-06 17:26:36,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:26:36,603 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:26:36,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:26:36,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:26:36,604 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:26:36,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:26:36,605 INFO L82 PathProgramCache]: Analyzing trace with hash 177936045, now seen corresponding path program 1 times [2021-01-06 17:26:36,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:26:36,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264975362] [2021-01-06 17:26:36,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:26:36,627 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:26:36,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401287112] [2021-01-06 17:26:36,628 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 17:26:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:26:36,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 17:26:36,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:26:36,804 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 17:26:36,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264975362] [2021-01-06 17:26:36,804 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:26:36,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401287112] [2021-01-06 17:26:36,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:26:36,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:26:36,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653058566] [2021-01-06 17:26:36,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:26:36,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:26:36,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:26:36,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:26:36,809 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2021-01-06 17:26:36,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:26:36,834 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2021-01-06 17:26:36,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:26:36,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-06 17:26:36,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:26:36,835 INFO L225 Difference]: With dead ends: 29 [2021-01-06 17:26:36,835 INFO L226 Difference]: Without dead ends: 18 [2021-01-06 17:26:36,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:26:36,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-01-06 17:26:36,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-01-06 17:26:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-01-06 17:26:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-01-06 17:26:36,841 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 8 [2021-01-06 17:26:36,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:26:36,842 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-01-06 17:26:36,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:26:36,842 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-01-06 17:26:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:26:36,843 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:26:36,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:26:37,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:26:37,058 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:26:37,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:26:37,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1269844846, now seen corresponding path program 1 times [2021-01-06 17:26:37,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:26:37,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837975749] [2021-01-06 17:26:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:26:37,089 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:26:37,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273961719] [2021-01-06 17:26:37,089 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 17:26:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:26:37,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:26:37,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:26:37,283 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 17:26:37,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837975749] [2021-01-06 17:26:37,283 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:26:37,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273961719] [2021-01-06 17:26:37,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:26:37,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:26:37,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434479348] [2021-01-06 17:26:37,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:26:37,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:26:37,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:26:37,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:26:37,287 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 5 states. [2021-01-06 17:26:37,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:26:37,407 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2021-01-06 17:26:37,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:26:37,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-01-06 17:26:37,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:26:37,409 INFO L225 Difference]: With dead ends: 34 [2021-01-06 17:26:37,410 INFO L226 Difference]: Without dead ends: 27 [2021-01-06 17:26:37,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:26:37,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-06 17:26:37,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2021-01-06 17:26:37,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 17:26:37,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-01-06 17:26:37,416 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 9 [2021-01-06 17:26:37,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:26:37,417 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-01-06 17:26:37,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:26:37,417 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-01-06 17:26:37,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:26:37,418 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:26:37,418 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:26:37,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:26:37,632 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:26:37,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:26:37,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1820707731, now seen corresponding path program 1 times [2021-01-06 17:26:37,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:26:37,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869922577] [2021-01-06 17:26:37,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:26:37,658 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:26:37,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508706777] [2021-01-06 17:26:37,659 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 17:26:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:26:37,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:26:37,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:26:37,831 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 17:26:37,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869922577] [2021-01-06 17:26:37,832 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:26:37,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508706777] [2021-01-06 17:26:37,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:26:37,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-06 17:26:37,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818640086] [2021-01-06 17:26:37,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:26:37,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:26:37,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:26:37,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:26:37,840 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand 5 states. [2021-01-06 17:26:37,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:26:37,899 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2021-01-06 17:26:37,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:26:37,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-06 17:26:37,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:26:37,901 INFO L225 Difference]: With dead ends: 36 [2021-01-06 17:26:37,901 INFO L226 Difference]: Without dead ends: 25 [2021-01-06 17:26:37,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:26:37,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-01-06 17:26:37,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-01-06 17:26:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-06 17:26:37,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2021-01-06 17:26:37,918 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 11 [2021-01-06 17:26:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:26:37,918 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-01-06 17:26:37,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:26:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2021-01-06 17:26:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:26:37,919 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:26:37,919 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:26:38,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:26:38,123 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:26:38,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:26:38,123 INFO L82 PathProgramCache]: Analyzing trace with hash 656159560, now seen corresponding path program 1 times [2021-01-06 17:26:38,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:26:38,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934047305] [2021-01-06 17:26:38,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:26:38,139 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:26:38,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451120574] [2021-01-06 17:26:38,140 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 17:26:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:26:38,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:26:38,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:26:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:26:38,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934047305] [2021-01-06 17:26:38,382 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:26:38,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451120574] [2021-01-06 17:26:38,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:26:38,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:26:38,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405928277] [2021-01-06 17:26:38,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:26:38,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:26:38,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:26:38,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:26:38,386 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 6 states. [2021-01-06 17:26:38,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:26:38,443 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-01-06 17:26:38,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:26:38,444 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-01-06 17:26:38,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:26:38,445 INFO L225 Difference]: With dead ends: 32 [2021-01-06 17:26:38,445 INFO L226 Difference]: Without dead ends: 21 [2021-01-06 17:26:38,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:26:38,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-01-06 17:26:38,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-01-06 17:26:38,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-01-06 17:26:38,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-01-06 17:26:38,452 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 12 [2021-01-06 17:26:38,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:26:38,452 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-01-06 17:26:38,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:26:38,452 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-01-06 17:26:38,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:26:38,453 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:26:38,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:26:38,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:26:38,659 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:26:38,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:26:38,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1133927788, now seen corresponding path program 1 times [2021-01-06 17:26:38,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:26:38,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558659142] [2021-01-06 17:26:38,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:26:38,693 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:26:38,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144258555] [2021-01-06 17:26:38,694 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 [2021-01-06 17:26:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:26:38,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:26:38,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:26:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:26:38,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558659142] [2021-01-06 17:26:38,882 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:26:38,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144258555] [2021-01-06 17:26:38,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:26:38,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:26:38,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961779378] [2021-01-06 17:26:38,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:26:38,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:26:38,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:26:38,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:26:38,884 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 5 states. [2021-01-06 17:26:38,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:26:38,978 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-01-06 17:26:38,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:26:38,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 17:26:38,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:26:38,979 INFO L225 Difference]: With dead ends: 27 [2021-01-06 17:26:38,980 INFO L226 Difference]: Without dead ends: 16 [2021-01-06 17:26:38,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:26:38,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-01-06 17:26:38,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-01-06 17:26:38,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-01-06 17:26:38,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-01-06 17:26:38,983 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2021-01-06 17:26:38,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:26:38,983 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-01-06 17:26:38,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:26:38,984 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-01-06 17:26:38,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:26:38,984 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:26:38,984 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:26:39,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:26:39,198 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:26:39,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:26:39,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1666872375, now seen corresponding path program 1 times [2021-01-06 17:26:39,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:26:39,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735607255] [2021-01-06 17:26:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:26:39,212 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:26:39,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923495931] [2021-01-06 17:26:39,213 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 [2021-01-06 17:26:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:26:39,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:26:39,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:26:39,330 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 17:26:39,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735607255] [2021-01-06 17:26:39,330 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:26:39,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923495931] [2021-01-06 17:26:39,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:26:39,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:26:39,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84632008] [2021-01-06 17:26:39,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 17:26:39,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:26:39,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 17:26:39,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 17:26:39,332 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2021-01-06 17:26:39,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:26:39,339 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-01-06 17:26:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 17:26:39,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-01-06 17:26:39,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:26:39,340 INFO L225 Difference]: With dead ends: 16 [2021-01-06 17:26:39,341 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:26:39,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 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 17:26:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:26:39,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:26:39,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:26:39,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:26:39,342 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-01-06 17:26:39,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:26:39,342 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:26:39,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 17:26:39,342 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:26:39,343 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:26:39,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:26:39,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:26:39,705 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-01-06 17:26:39,705 INFO L189 CegarLoopUtils]: For program point L19(lines 19 22) no Hoare annotation was computed. [2021-01-06 17:26:39,705 INFO L185 CegarLoopUtils]: At program point L19-2(line 40) the Hoare annotation is: (and (= ULTIMATE.start_main_~B~0 1) (< (mod ULTIMATE.start_main_~r~0 4294967296) (mod ULTIMATE.start_main_~b~0 4294967296)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0) (<= 2 ~counter~0)) [2021-01-06 17:26:39,706 INFO L189 CegarLoopUtils]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2021-01-06 17:26:39,706 INFO L192 CegarLoopUtils]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2021-01-06 17:26:39,706 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:26:39,706 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:26:39,706 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:26:39,706 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-01-06 17:26:39,706 INFO L189 CegarLoopUtils]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-01-06 17:26:39,706 INFO L189 CegarLoopUtils]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2021-01-06 17:26:39,707 INFO L192 CegarLoopUtils]: At program point L49(lines 26 50) the Hoare annotation is: true [2021-01-06 17:26:39,707 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:26:39,707 INFO L189 CegarLoopUtils]: For program point L38(lines 38 47) no Hoare annotation was computed. [2021-01-06 17:26:39,707 INFO L189 CegarLoopUtils]: For program point L38-2(lines 38 47) no Hoare annotation was computed. [2021-01-06 17:26:39,707 INFO L189 CegarLoopUtils]: For program point L34-1(lines 34 37) no Hoare annotation was computed. [2021-01-06 17:26:39,707 INFO L185 CegarLoopUtils]: At program point L34-3(lines 34 37) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~q~0 0)) (.cse1 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~B~0 1) (<= ~counter~0 0) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) .cse0 .cse1 (<= 0 ~counter~0)) (and (<= 1 ~counter~0) (<= 1 (mod ULTIMATE.start_main_~r~0 4294967296)) .cse0 .cse1))) [2021-01-06 17:26:39,707 INFO L189 CegarLoopUtils]: For program point L43(lines 43 46) no Hoare annotation was computed. [2021-01-06 17:26:39,707 INFO L189 CegarLoopUtils]: For program point L43-2(lines 26 50) no Hoare annotation was computed. [2021-01-06 17:26:39,708 INFO L189 CegarLoopUtils]: For program point L35(line 35) no Hoare annotation was computed. [2021-01-06 17:26:39,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:26:39 BoogieIcfgContainer [2021-01-06 17:26:39,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:26:39,726 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:26:39,726 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:26:39,726 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:26:39,727 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:26:36" (3/4) ... [2021-01-06 17:26:39,730 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:26:39,741 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-01-06 17:26:39,742 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:26:39,742 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:26:39,742 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:26:39,787 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/divbin2_unwindbound2.i-witness.graphml [2021-01-06 17:26:39,787 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:26:39,789 INFO L168 Benchmark]: Toolchain (without parser) took 4281.33 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 108.0 MB in the beginning and 109.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 29.7 MB. Max. memory is 8.0 GB. [2021-01-06 17:26:39,790 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:26:39,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.97 ms. Allocated memory is still 151.0 MB. Free memory was 107.8 MB in the beginning and 128.3 MB in the end (delta: -20.5 MB). Peak memory consumption was 9.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:26:39,791 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.18 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 126.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:26:39,792 INFO L168 Benchmark]: Boogie Preprocessor took 71.07 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 133.1 MB in the end (delta: -6.5 MB). Peak memory consumption was 2.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:26:39,793 INFO L168 Benchmark]: RCFGBuilder took 369.00 ms. Allocated memory is still 151.0 MB. Free memory was 132.9 MB in the beginning and 119.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:26:39,793 INFO L168 Benchmark]: TraceAbstraction took 3466.08 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 119.6 MB in the beginning and 113.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 37.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:26:39,794 INFO L168 Benchmark]: Witness Printer took 61.46 ms. Allocated memory is still 181.4 MB. Free memory was 113.0 MB in the beginning and 109.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:26:39,798 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 is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 264.97 ms. Allocated memory is still 151.0 MB. Free memory was 107.8 MB in the beginning and 128.3 MB in the end (delta: -20.5 MB). Peak memory consumption was 9.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.18 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 126.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 71.07 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 133.1 MB in the end (delta: -6.5 MB). Peak memory consumption was 2.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 369.00 ms. Allocated memory is still 151.0 MB. Free memory was 132.9 MB in the beginning and 119.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3466.08 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 119.6 MB in the beginning and 113.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 37.8 MB. Max. memory is 8.0 GB. * Witness Printer took 61.46 ms. Allocated memory is still 181.4 MB. Free memory was 113.0 MB in the beginning and 109.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 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: 34]: Loop Invariant Derived loop invariant: (((((B == 1 && counter <= 0) && B == b) && q == 0) && A == r) && 0 <= counter) || (((1 <= counter && 1 <= r % 4294967296) && q == 0) && A == r) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((B == 1 && r % 4294967296 < b % 4294967296) && 1 == cond) && B == b) && q == 0) && A == r) && 2 <= counter - 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, 20 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 115 SDtfs, 50 SDslu, 152 SDs, 0 SdLazy, 108 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 63 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 3286 SizeOfPredicates, 15 NumberOfNonLiveVariables, 368 ConjunctsInSsa, 50 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...