/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/cohendiv-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:21:34,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:21:34,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:21:34,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:21:34,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:21:34,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:21:34,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:21:34,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:21:34,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:21:34,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:21:34,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:21:34,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:21:34,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:21:34,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:21:34,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:21:34,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:21:34,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:21:34,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:21:34,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:21:34,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:21:34,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:21:34,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:21:34,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:21:34,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:21:34,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:21:34,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:21:34,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:21:34,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:21:34,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:21:34,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:21:34,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:21:34,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:21:34,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:21:34,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:21:34,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:21:34,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:21:34,393 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 17:21:34,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:21:34,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:21:34,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:21:34,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:21:34,449 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:21:34,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:21:34,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:21:34,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:21:34,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:21:34,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:21:34,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:21:34,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:21:34,452 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:21:34,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:21:34,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:21:34,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:21:34,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:21:34,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:21:34,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:21:34,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:21:34,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:21:34,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:21:34,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:21:34,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:21:34,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:21:34,455 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:21:34,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:21:34,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:21:34,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:21:34,909 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:21:34,910 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:21:34,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c [2021-01-06 17:21:35,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8a8193dff/2f924e93a04a44368252f3668453d4c5/FLAG06fe2b8dc [2021-01-06 17:21:35,540 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:21:35,541 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c [2021-01-06 17:21:35,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8a8193dff/2f924e93a04a44368252f3668453d4c5/FLAG06fe2b8dc [2021-01-06 17:21:35,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8a8193dff/2f924e93a04a44368252f3668453d4c5 [2021-01-06 17:21:36,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:21:36,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:21:36,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:21:36,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:21:36,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:21:36,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:21:36" (1/1) ... [2021-01-06 17:21:36,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ee5568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:36, skipping insertion in model container [2021-01-06 17:21:36,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:21:36" (1/1) ... [2021-01-06 17:21:36,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:21:36,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:21:36,279 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/cohendiv-ll_unwindbound2.c[576,589] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~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[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] 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[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:21:36,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:21:36,331 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:21:36,349 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/cohendiv-ll_unwindbound2.c[576,589] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~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[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] 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[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:21:36,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:21:36,400 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:21:36,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:36 WrapperNode [2021-01-06 17:21:36,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:21:36,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:21:36,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:21:36,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:21:36,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:36" (1/1) ... [2021-01-06 17:21:36,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:36" (1/1) ... [2021-01-06 17:21:36,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:21:36,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:21:36,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:21:36,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:21:36,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:36" (1/1) ... [2021-01-06 17:21:36,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:36" (1/1) ... [2021-01-06 17:21:36,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:36" (1/1) ... [2021-01-06 17:21:36,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:36" (1/1) ... [2021-01-06 17:21:36,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:36" (1/1) ... [2021-01-06 17:21:36,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:36" (1/1) ... [2021-01-06 17:21:36,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:36" (1/1) ... [2021-01-06 17:21:36,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:21:36,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:21:36,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:21:36,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:21:36,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:36" (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 17:21:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:21:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:21:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:21:36,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:21:36,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:21:36,861 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-01-06 17:21:36,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:21:36 BoogieIcfgContainer [2021-01-06 17:21:36,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:21:36,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:21:36,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:21:36,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:21:36,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:21:36" (1/3) ... [2021-01-06 17:21:36,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5124b0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:21:36, skipping insertion in model container [2021-01-06 17:21:36,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:36" (2/3) ... [2021-01-06 17:21:36,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5124b0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:21:36, skipping insertion in model container [2021-01-06 17:21:36,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:21:36" (3/3) ... [2021-01-06 17:21:36,871 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound2.c [2021-01-06 17:21:36,878 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:21:36,882 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:21:36,902 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:21:36,928 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:21:36,929 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:21:36,929 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:21:36,929 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:21:36,929 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:21:36,929 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:21:36,929 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:21:36,930 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:21:36,948 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-01-06 17:21:36,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:21:36,953 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:36,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:36,954 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:36,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:36,961 INFO L82 PathProgramCache]: Analyzing trace with hash 122367883, now seen corresponding path program 1 times [2021-01-06 17:21:36,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:36,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997252746] [2021-01-06 17:21:36,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:37,192 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 17:21:37,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997252746] [2021-01-06 17:21:37,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:37,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:21:37,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432134400] [2021-01-06 17:21:37,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:21:37,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:37,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:21:37,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:21:37,218 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2021-01-06 17:21:37,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:37,242 INFO L93 Difference]: Finished difference Result 79 states and 104 transitions. [2021-01-06 17:21:37,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:21:37,243 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 17:21:37,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:37,253 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:21:37,253 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 17:21:37,257 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 17:21:37,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 17:21:37,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-06 17:21:37,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 17:21:37,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-01-06 17:21:37,300 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 8 [2021-01-06 17:21:37,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:37,300 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-01-06 17:21:37,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:21:37,301 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-01-06 17:21:37,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:21:37,301 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:37,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:37,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:21:37,302 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:37,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:37,303 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-01-06 17:21:37,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:37,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612511572] [2021-01-06 17:21:37,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:37,326 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:37,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1820875528] [2021-01-06 17:21:37,326 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 17:21:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:37,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:21:37,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:37,500 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 17:21:37,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612511572] [2021-01-06 17:21:37,500 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:37,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820875528] [2021-01-06 17:21:37,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:37,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:21:37,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225633427] [2021-01-06 17:21:37,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:21:37,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:37,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:21:37,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:21:37,505 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 6 states. [2021-01-06 17:21:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:37,682 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-01-06 17:21:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:21:37,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-06 17:21:37,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:37,684 INFO L225 Difference]: With dead ends: 51 [2021-01-06 17:21:37,684 INFO L226 Difference]: Without dead ends: 49 [2021-01-06 17:21:37,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:21:37,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-01-06 17:21:37,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2021-01-06 17:21:37,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-06 17:21:37,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-01-06 17:21:37,694 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2021-01-06 17:21:37,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:37,695 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-01-06 17:21:37,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:21:37,695 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-01-06 17:21:37,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:21:37,696 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:37,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:37,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:21:37,912 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:37,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:37,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1182906761, now seen corresponding path program 1 times [2021-01-06 17:21:37,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:37,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135049236] [2021-01-06 17:21:37,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:37,961 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 17:21:37,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135049236] [2021-01-06 17:21:37,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:37,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:21:37,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948645297] [2021-01-06 17:21:37,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:21:37,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:37,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:21:37,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:21:37,964 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2021-01-06 17:21:37,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:37,981 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-01-06 17:21:37,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:21:37,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 17:21:37,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:37,983 INFO L225 Difference]: With dead ends: 44 [2021-01-06 17:21:37,983 INFO L226 Difference]: Without dead ends: 40 [2021-01-06 17:21:37,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 17:21:37,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-01-06 17:21:37,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-01-06 17:21:37,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-06 17:21:37,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-01-06 17:21:37,991 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 9 [2021-01-06 17:21:37,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:37,991 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-01-06 17:21:37,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:21:37,992 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-01-06 17:21:37,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:21:37,992 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:37,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:37,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:21:37,993 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:37,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:37,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2021-01-06 17:21:37,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:37,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437699548] [2021-01-06 17:21:37,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:38,008 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:38,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1580367899] [2021-01-06 17:21:38,008 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 17:21:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:38,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:21:38,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:38,105 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 17:21:38,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437699548] [2021-01-06 17:21:38,105 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:38,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580367899] [2021-01-06 17:21:38,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:38,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:21:38,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857482788] [2021-01-06 17:21:38,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:21:38,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:38,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:21:38,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:21:38,108 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 6 states. [2021-01-06 17:21:38,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:38,270 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-01-06 17:21:38,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:21:38,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-01-06 17:21:38,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:38,271 INFO L225 Difference]: With dead ends: 74 [2021-01-06 17:21:38,271 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 17:21:38,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:21:38,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 17:21:38,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2021-01-06 17:21:38,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-06 17:21:38,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-01-06 17:21:38,281 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 10 [2021-01-06 17:21:38,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:38,282 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-01-06 17:21:38,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:21:38,282 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-01-06 17:21:38,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:21:38,283 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:38,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:38,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:38,498 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:38,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:38,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1896102171, now seen corresponding path program 1 times [2021-01-06 17:21:38,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:38,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931860772] [2021-01-06 17:21:38,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:38,514 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:38,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1173104592] [2021-01-06 17:21:38,514 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 17:21:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:38,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:21:38,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:38,620 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 17:21:38,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931860772] [2021-01-06 17:21:38,621 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:38,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173104592] [2021-01-06 17:21:38,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:38,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:21:38,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405447056] [2021-01-06 17:21:38,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:21:38,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:38,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:21:38,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:21:38,627 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 6 states. [2021-01-06 17:21:38,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:38,827 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2021-01-06 17:21:38,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:21:38,828 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-01-06 17:21:38,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:38,834 INFO L225 Difference]: With dead ends: 104 [2021-01-06 17:21:38,834 INFO L226 Difference]: Without dead ends: 98 [2021-01-06 17:21:38,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:21:38,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-06 17:21:38,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 75. [2021-01-06 17:21:38,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 17:21:38,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2021-01-06 17:21:38,863 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 14 [2021-01-06 17:21:38,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:38,864 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2021-01-06 17:21:38,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:21:38,864 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2021-01-06 17:21:38,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:21:38,865 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:38,865 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:39,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:39,079 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:39,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:39,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1527669658, now seen corresponding path program 1 times [2021-01-06 17:21:39,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:39,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692190870] [2021-01-06 17:21:39,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:39,094 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:39,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589620528] [2021-01-06 17:21:39,095 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 17:21:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:39,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:21:39,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:39,186 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 17:21:39,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692190870] [2021-01-06 17:21:39,187 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:39,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589620528] [2021-01-06 17:21:39,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:39,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:21:39,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418885997] [2021-01-06 17:21:39,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:21:39,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:39,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:21:39,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:21:39,193 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand 5 states. [2021-01-06 17:21:39,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:39,226 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2021-01-06 17:21:39,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:21:39,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-01-06 17:21:39,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:39,228 INFO L225 Difference]: With dead ends: 121 [2021-01-06 17:21:39,229 INFO L226 Difference]: Without dead ends: 75 [2021-01-06 17:21:39,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:21:39,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-01-06 17:21:39,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-01-06 17:21:39,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 17:21:39,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2021-01-06 17:21:39,252 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 18 [2021-01-06 17:21:39,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:39,253 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2021-01-06 17:21:39,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:21:39,253 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2021-01-06 17:21:39,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:21:39,254 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:39,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:39,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:39,469 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:39,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:39,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2092681793, now seen corresponding path program 1 times [2021-01-06 17:21:39,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:39,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379884129] [2021-01-06 17:21:39,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:39,482 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:39,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25083290] [2021-01-06 17:21:39,483 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 17:21:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:39,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:21:39,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:39,593 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 17:21:39,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379884129] [2021-01-06 17:21:39,594 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:39,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25083290] [2021-01-06 17:21:39,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:39,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:21:39,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900681611] [2021-01-06 17:21:39,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:21:39,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:39,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:21:39,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:21:39,596 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand 6 states. [2021-01-06 17:21:39,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:39,725 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2021-01-06 17:21:39,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:21:39,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2021-01-06 17:21:39,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:39,726 INFO L225 Difference]: With dead ends: 82 [2021-01-06 17:21:39,726 INFO L226 Difference]: Without dead ends: 80 [2021-01-06 17:21:39,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:21:39,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-01-06 17:21:39,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2021-01-06 17:21:39,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-06 17:21:39,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2021-01-06 17:21:39,733 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 18 [2021-01-06 17:21:39,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:39,734 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2021-01-06 17:21:39,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:21:39,734 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2021-01-06 17:21:39,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 17:21:39,735 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:39,735 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:39,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 17:21:39,948 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:39,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:39,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1135496359, now seen corresponding path program 1 times [2021-01-06 17:21:39,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:39,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414803541] [2021-01-06 17:21:39,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:39,962 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:39,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600550832] [2021-01-06 17:21:39,962 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 17:21:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:40,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:21:40,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:40,182 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 17:21:40,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414803541] [2021-01-06 17:21:40,183 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:40,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600550832] [2021-01-06 17:21:40,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:21:40,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:21:40,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879739822] [2021-01-06 17:21:40,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:21:40,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:40,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:21:40,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:21:40,186 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 9 states. [2021-01-06 17:21:40,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:40,531 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2021-01-06 17:21:40,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:21:40,531 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2021-01-06 17:21:40,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:40,532 INFO L225 Difference]: With dead ends: 138 [2021-01-06 17:21:40,532 INFO L226 Difference]: Without dead ends: 85 [2021-01-06 17:21:40,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:21:40,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-01-06 17:21:40,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2021-01-06 17:21:40,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-06 17:21:40,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2021-01-06 17:21:40,539 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 24 [2021-01-06 17:21:40,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:40,539 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2021-01-06 17:21:40,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:21:40,540 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2021-01-06 17:21:40,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 17:21:40,540 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:40,541 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:40,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:40,756 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:40,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:40,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1501746768, now seen corresponding path program 1 times [2021-01-06 17:21:40,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:40,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101208718] [2021-01-06 17:21:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:40,770 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:40,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [988522160] [2021-01-06 17:21:40,771 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:40,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:21:40,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:40,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:21:40,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101208718] [2021-01-06 17:21:40,872 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:40,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988522160] [2021-01-06 17:21:40,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:21:40,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:21:40,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311024246] [2021-01-06 17:21:40,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:21:40,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:40,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:21:40,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:21:40,876 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand 6 states. [2021-01-06 17:21:40,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:40,901 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2021-01-06 17:21:40,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:21:40,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-01-06 17:21:40,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:40,902 INFO L225 Difference]: With dead ends: 97 [2021-01-06 17:21:40,903 INFO L226 Difference]: Without dead ends: 43 [2021-01-06 17:21:40,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 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 17:21:40,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-01-06 17:21:40,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-01-06 17:21:40,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-01-06 17:21:40,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2021-01-06 17:21:40,912 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 24 [2021-01-06 17:21:40,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:40,912 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2021-01-06 17:21:40,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:21:40,913 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2021-01-06 17:21:40,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:21:40,914 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:40,914 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:41,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:41,117 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:41,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:41,119 INFO L82 PathProgramCache]: Analyzing trace with hash 2122999750, now seen corresponding path program 1 times [2021-01-06 17:21:41,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:41,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801878728] [2021-01-06 17:21:41,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:41,142 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:41,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669181405] [2021-01-06 17:21:41,143 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:41,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 17:21:41,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 17:21:41,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801878728] [2021-01-06 17:21:41,255 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:41,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669181405] [2021-01-06 17:21:41,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:41,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:21:41,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964176438] [2021-01-06 17:21:41,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:21:41,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:41,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:21:41,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:21:41,257 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 5 states. [2021-01-06 17:21:41,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:41,289 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2021-01-06 17:21:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:21:41,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2021-01-06 17:21:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:41,292 INFO L225 Difference]: With dead ends: 47 [2021-01-06 17:21:41,292 INFO L226 Difference]: Without dead ends: 29 [2021-01-06 17:21:41,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:21:41,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-06 17:21:41,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-01-06 17:21:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-01-06 17:21:41,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2021-01-06 17:21:41,297 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 27 [2021-01-06 17:21:41,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:41,298 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2021-01-06 17:21:41,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:21:41,298 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2021-01-06 17:21:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 17:21:41,300 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:41,300 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:41,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 17:21:41,515 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:41,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:41,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1388511663, now seen corresponding path program 1 times [2021-01-06 17:21:41,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:41,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962023184] [2021-01-06 17:21:41,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:41,527 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:41,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087442970] [2021-01-06 17:21:41,528 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:41,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:21:41,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:41,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:21:41,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962023184] [2021-01-06 17:21:41,707 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:41,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087442970] [2021-01-06 17:21:41,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:21:41,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:21:41,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439182932] [2021-01-06 17:21:41,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:21:41,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:41,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:21:41,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:21:41,709 INFO L87 Difference]: Start difference. First operand 29 states and 28 transitions. Second operand 9 states. [2021-01-06 17:21:41,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:41,937 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2021-01-06 17:21:41,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:21:41,937 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2021-01-06 17:21:41,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:41,938 INFO L225 Difference]: With dead ends: 29 [2021-01-06 17:21:41,938 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:21:41,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:21:41,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:21:41,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:21:41,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:21:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:21:41,940 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-01-06 17:21:41,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:41,940 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:21:41,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:21:41,940 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:21:41,940 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:21:42,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:42,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:21:42,683 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:21:42,684 INFO L189 CegarLoopUtils]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-01-06 17:21:42,684 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:21:42,684 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:21:42,684 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:21:42,685 INFO L189 CegarLoopUtils]: For program point L12(line 12) no Hoare annotation was computed. [2021-01-06 17:21:42,685 INFO L189 CegarLoopUtils]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2021-01-06 17:21:42,687 INFO L185 CegarLoopUtils]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 (<= ~counter~0 0) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse1 (<= 0 ~counter~0) (= ULTIMATE.start_main_~b~0 0)) (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~a~0 1) .cse2 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) .cse1 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 (= ULTIMATE.start_main_~q~0 2) .cse2 (<= 3 ~counter~0) .cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 2)))))) [2021-01-06 17:21:42,687 INFO L189 CegarLoopUtils]: For program point L37-4(lines 37 61) no Hoare annotation was computed. [2021-01-06 17:21:42,687 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:21:42,688 INFO L189 CegarLoopUtils]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2021-01-06 17:21:42,688 INFO L185 CegarLoopUtils]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (<= 1 ULTIMATE.start_main_~r~0) .cse0 .cse1 (= ULTIMATE.start_main_~a~0 2) .cse2 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 2)) .cse3 .cse4 (<= 2 ~counter~0)) (and (<= 1 ~counter~0) .cse0 (<= ~counter~0 1) (= ULTIMATE.start_main_~a~0 1) .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)))) [2021-01-06 17:21:42,688 INFO L189 CegarLoopUtils]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2021-01-06 17:21:42,688 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:21:42,688 INFO L192 CegarLoopUtils]: At program point L64(lines 23 65) the Hoare annotation is: true [2021-01-06 17:21:42,688 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:21:42,688 INFO L189 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:21:42,689 INFO L185 CegarLoopUtils]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) .cse0) (and (<= 1 ~counter~0) (<= 1 ULTIMATE.start_main_~y~0) (<= ~counter~0 1) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse0))) [2021-01-06 17:21:42,689 INFO L189 CegarLoopUtils]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:21:42,689 INFO L185 CegarLoopUtils]: At program point L15-5(lines 41 42) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (<= 1 ~counter~0) (<= 1 ULTIMATE.start_main_~y~0) (<= ~counter~0 1) .cse0 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse1) (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) .cse1))) [2021-01-06 17:21:42,689 INFO L189 CegarLoopUtils]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:21:42,689 INFO L185 CegarLoopUtils]: At program point L15-8(lines 14 20) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~a~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 2 ~counter~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)) [2021-01-06 17:21:42,689 INFO L189 CegarLoopUtils]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:21:42,689 INFO L185 CegarLoopUtils]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~a~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 2 ~counter~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)) [2021-01-06 17:21:42,690 INFO L189 CegarLoopUtils]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:21:42,690 INFO L185 CegarLoopUtils]: At program point L15-14(lines 51 52) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~a~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 2 ~counter~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)) [2021-01-06 17:21:42,690 INFO L189 CegarLoopUtils]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:21:42,690 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:21:42,690 INFO L185 CegarLoopUtils]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~a~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 2 ~counter~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-01-06 17:21:42,690 INFO L189 CegarLoopUtils]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:21:42,690 INFO L192 CegarLoopUtils]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-01-06 17:21:42,690 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:21:42,690 INFO L189 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:21:42,691 INFO L189 CegarLoopUtils]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:21:42,691 INFO L189 CegarLoopUtils]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:21:42,691 INFO L189 CegarLoopUtils]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:21:42,691 INFO L189 CegarLoopUtils]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:21:42,691 INFO L189 CegarLoopUtils]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:21:42,691 INFO L189 CegarLoopUtils]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:21:42,691 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:21:42,691 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:21:42,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:21:42 BoogieIcfgContainer [2021-01-06 17:21:42,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:21:42,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:21:42,717 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:21:42,717 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:21:42,717 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:21:36" (3/4) ... [2021-01-06 17:21:42,721 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:21:42,733 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-01-06 17:21:42,733 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:21:42,733 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:21:42,734 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:21:42,795 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c-witness.graphml [2021-01-06 17:21:42,796 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:21:42,798 INFO L168 Benchmark]: Toolchain (without parser) took 6787.27 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 139.2 MB in the beginning and 123.8 MB in the end (delta: 15.4 MB). Peak memory consumption was 49.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:21:42,798 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 163.6 MB. Free memory is still 137.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:21:42,798 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.35 ms. Allocated memory is still 163.6 MB. Free memory was 139.0 MB in the beginning and 129.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:21:42,799 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.33 ms. Allocated memory is still 163.6 MB. Free memory was 129.0 MB in the beginning and 127.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:21:42,799 INFO L168 Benchmark]: Boogie Preprocessor took 45.69 ms. Allocated memory is still 163.6 MB. Free memory was 127.3 MB in the beginning and 126.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:21:42,800 INFO L168 Benchmark]: RCFGBuilder took 354.92 ms. Allocated memory is still 163.6 MB. Free memory was 126.1 MB in the beginning and 109.1 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:21:42,800 INFO L168 Benchmark]: TraceAbstraction took 5851.61 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 108.6 MB in the beginning and 127.5 MB in the end (delta: -18.8 MB). Peak memory consumption was 74.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:21:42,800 INFO L168 Benchmark]: Witness Printer took 79.28 ms. Allocated memory is still 197.1 MB. Free memory was 127.5 MB in the beginning and 123.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:21:42,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 163.6 MB. Free memory is still 137.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 385.35 ms. Allocated memory is still 163.6 MB. Free memory was 139.0 MB in the beginning and 129.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 56.33 ms. Allocated memory is still 163.6 MB. Free memory was 129.0 MB in the beginning and 127.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.69 ms. Allocated memory is still 163.6 MB. Free memory was 127.3 MB in the beginning and 126.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 354.92 ms. Allocated memory is still 163.6 MB. Free memory was 126.1 MB in the beginning and 109.1 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5851.61 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 108.6 MB in the beginning and 127.5 MB in the end (delta: -18.8 MB). Peak memory consumption was 74.6 MB. Max. memory is 8.0 GB. * Witness Printer took 79.28 ms. Allocated memory is still 197.1 MB. Free memory was 127.5 MB in the beginning and 123.8 MB in the end (delta: 3.6 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: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: 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 7 specifications checked. All of them hold - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((1 <= counter && 1 <= y) && counter <= 1) && 1 == cond) && r == x) && q == 0) && cond == 1) || (((((q == 1 && x == r + y) && 1 == cond) && y <= x) && 2 * r < x) && cond == 1) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((((1 <= r && 1 <= y) && 1 == cond) && a == 2) && r == x) && b == y * 2) && q == 0) && cond == 1) && 2 <= counter) || (((((((((1 <= counter && 1 <= y) && counter <= 1) && a == 1) && 1 == cond) && r == x) && q == 0) && cond == 1) && b == y) && y <= r) - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (((((((1 <= y && a == 1) && 1 == cond) && r == x) && q == 0) && cond == 1) && 2 <= counter) && b == y) && y <= r - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((1 <= y && a == 1) && 1 == cond) && r == x) && q == 0) && cond == 1) && 2 <= counter) && b == y) && y <= r - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((1 <= y && counter <= 0) && a == 0) && r == x) && q == 0) && cond == 1) && 0 <= counter) && b == 0) || (((((((q == 1 && x == r + y) && a == 1) && 1 == cond) && y <= x) && 2 * r < x) && cond == 1) && b == y)) || (((((1 <= y && q == 2) && 1 == cond) && 3 <= counter) && cond == 1) && x == r + y * 2) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((q == 1 && x == r + y) && y <= x) && 2 * r < x) && cond == 1) || (((((1 <= counter && 1 <= y) && counter <= 1) && r == x) && q == 0) && cond == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((1 <= r && 1 <= y) && a == 1) && 1 == cond) && r == x) && q == 0) && cond == 1) && 2 <= counter) && b == y - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((1 <= y && a == 1) && 1 == cond) && r == x) && q == 0) && cond == 1) && 2 <= counter) && b == y) && y <= r - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 324 SDtfs, 757 SDslu, 501 SDs, 0 SdLazy, 432 SolverSat, 130 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 199 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 64 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 25 NumberOfFragments, 340 HoareAnnotationTreeSize, 10 FomulaSimplifications, 840 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 27 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 22165 SizeOfPredicates, 45 NumberOfNonLiveVariables, 891 ConjunctsInSsa, 122 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 9/16 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...