/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/fermat2-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:43:55,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:43:55,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:43:56,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:43:56,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:43:56,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:43:56,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:43:56,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:43:56,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:43:56,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:43:56,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:43:56,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:43:56,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:43:56,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:43:56,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:43:56,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:43:56,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:43:56,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:43:56,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:43:56,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:43:56,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:43:56,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:43:56,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:43:56,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:43:56,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:43:56,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:43:56,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:43:56,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:43:56,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:43:56,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:43:56,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:43:56,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:43:56,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:43:56,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:43:56,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:43:56,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:43:56,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:43:56,095 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:43:56,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:43:56,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:43:56,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:43:56,097 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:43:56,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:43:56,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:43:56,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:43:56,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:43:56,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:43:56,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:43:56,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:43:56,099 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:43:56,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:43:56,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:43:56,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:43:56,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:43:56,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:43:56,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:43:56,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:43:56,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:43:56,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:43:56,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:43:56,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:43:56,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:43:56,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:43:56,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:43:56,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:43:56,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:43:56,629 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:43:56,631 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:43:56,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound20.c [2020-12-23 07:43:56,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4f36ce77b/bd7b4e90c1c64417826800718fa85d78/FLAG9d2f7664d [2020-12-23 07:43:57,278 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:43:57,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound20.c [2020-12-23 07:43:57,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4f36ce77b/bd7b4e90c1c64417826800718fa85d78/FLAG9d2f7664d [2020-12-23 07:43:57,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4f36ce77b/bd7b4e90c1c64417826800718fa85d78 [2020-12-23 07:43:57,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:43:57,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:43:57,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:43:57,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:43:57,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:43:57,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:43:57" (1/1) ... [2020-12-23 07:43:57,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505ac6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:43:57, skipping insertion in model container [2020-12-23 07:43:57,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:43:57" (1/1) ... [2020-12-23 07:43:57,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:43:57,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:43:57,859 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/fermat2-ll_unwindbound20.c[524,537] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~R~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] [2020-12-23 07:43:57,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:43:57,892 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:43:57,905 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/fermat2-ll_unwindbound20.c[524,537] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~R~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] [2020-12-23 07:43:57,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:43:57,945 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:43:57,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:43:57 WrapperNode [2020-12-23 07:43:57,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:43:57,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:43:57,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:43:57,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:43:57,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:43:57" (1/1) ... [2020-12-23 07:43:57,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:43:57" (1/1) ... [2020-12-23 07:43:58,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:43:58,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:43:58,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:43:58,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:43:58,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:43:57" (1/1) ... [2020-12-23 07:43:58,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:43:57" (1/1) ... [2020-12-23 07:43:58,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:43:57" (1/1) ... [2020-12-23 07:43:58,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:43:57" (1/1) ... [2020-12-23 07:43:58,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:43:57" (1/1) ... [2020-12-23 07:43:58,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:43:57" (1/1) ... [2020-12-23 07:43:58,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:43:57" (1/1) ... [2020-12-23 07:43:58,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:43:58,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:43:58,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:43:58,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:43:58,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:43:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:43:58,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:43:58,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:43:58,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:43:58,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:43:58,636 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:43:58,637 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-23 07:43:58,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:43:58 BoogieIcfgContainer [2020-12-23 07:43:58,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:43:58,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:43:58,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:43:58,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:43:58,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:43:57" (1/3) ... [2020-12-23 07:43:58,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d6a081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:43:58, skipping insertion in model container [2020-12-23 07:43:58,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:43:57" (2/3) ... [2020-12-23 07:43:58,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d6a081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:43:58, skipping insertion in model container [2020-12-23 07:43:58,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:43:58" (3/3) ... [2020-12-23 07:43:58,650 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_unwindbound20.c [2020-12-23 07:43:58,660 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:43:58,667 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 07:43:58,711 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 07:43:58,772 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:43:58,772 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:43:58,773 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:43:58,773 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:43:58,776 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:43:58,776 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:43:58,777 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:43:58,777 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:43:58,809 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-12-23 07:43:58,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:43:58,815 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:43:58,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:43:58,816 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:43:58,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:43:58,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1235340721, now seen corresponding path program 1 times [2020-12-23 07:43:58,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:43:58,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191932800] [2020-12-23 07:43:58,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:43:58,924 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:43:58,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174425862] [2020-12-23 07:43:58,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:43:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:43:59,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-23 07:43:59,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:43:59,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:43:59,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191932800] [2020-12-23 07:43:59,072 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:43:59,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174425862] [2020-12-23 07:43:59,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:43:59,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:43:59,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548778408] [2020-12-23 07:43:59,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:43:59,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:43:59,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:43:59,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:43:59,097 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-12-23 07:43:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:43:59,114 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-12-23 07:43:59,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:43:59,115 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-23 07:43:59,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:43:59,127 INFO L225 Difference]: With dead ends: 39 [2020-12-23 07:43:59,128 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 07:43:59,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:43:59,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 07:43:59,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-23 07:43:59,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-23 07:43:59,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-12-23 07:43:59,175 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2020-12-23 07:43:59,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:43:59,176 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-12-23 07:43:59,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:43:59,176 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-12-23 07:43:59,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:43:59,177 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:43:59,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:43:59,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-23 07:43:59,391 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:43:59,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:43:59,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2020-12-23 07:43:59,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:43:59,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850471819] [2020-12-23 07:43:59,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:43:59,416 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:43:59,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926285521] [2020-12-23 07:43:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:43:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:43:59,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:43:59,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:43:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:43:59,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850471819] [2020-12-23 07:43:59,639 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:43:59,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926285521] [2020-12-23 07:43:59,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:43:59,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:43:59,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243986732] [2020-12-23 07:43:59,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:43:59,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:43:59,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:43:59,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:43:59,644 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 6 states. [2020-12-23 07:44:01,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:44:01,871 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-12-23 07:44:01,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:44:01,872 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-23 07:44:01,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:44:01,873 INFO L225 Difference]: With dead ends: 32 [2020-12-23 07:44:01,873 INFO L226 Difference]: Without dead ends: 30 [2020-12-23 07:44:01,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:44:01,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-23 07:44:01,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2020-12-23 07:44:01,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 07:44:01,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-12-23 07:44:01,883 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2020-12-23 07:44:01,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:44:01,884 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-12-23 07:44:01,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:44:01,884 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-12-23 07:44:01,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:44:01,885 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:44:01,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:44:02,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:44:02,100 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:44:02,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:44:02,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1507424085, now seen corresponding path program 1 times [2020-12-23 07:44:02,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:44:02,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835441591] [2020-12-23 07:44:02,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:44:02,115 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:44:02,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799616475] [2020-12-23 07:44:02,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:44:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:44:02,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 07:44:02,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:44:02,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:44:02,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835441591] [2020-12-23 07:44:02,259 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:44:02,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799616475] [2020-12-23 07:44:02,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:44:02,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:44:02,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202844759] [2020-12-23 07:44:02,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:44:02,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:44:02,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:44:02,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:44:02,263 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-12-23 07:44:02,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:44:02,279 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-12-23 07:44:02,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:44:02,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 07:44:02,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:44:02,280 INFO L225 Difference]: With dead ends: 24 [2020-12-23 07:44:02,280 INFO L226 Difference]: Without dead ends: 20 [2020-12-23 07:44:02,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:44:02,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-23 07:44:02,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-23 07:44:02,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 07:44:02,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-12-23 07:44:02,288 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2020-12-23 07:44:02,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:44:02,288 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-12-23 07:44:02,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:44:02,288 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-12-23 07:44:02,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:44:02,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:44:02,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:44:02,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:44:02,504 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:44:02,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:44:02,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1189458428, now seen corresponding path program 1 times [2020-12-23 07:44:02,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:44:02,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457702971] [2020-12-23 07:44:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:44:02,520 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:44:02,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932990333] [2020-12-23 07:44:02,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:44:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:44:02,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 07:44:02,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:44:04,632 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 24 [2020-12-23 07:44:04,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457702971] [2020-12-23 07:44:04,864 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:44:04,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932990333] [2020-12-23 07:44:04,864 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-23 07:44:04,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:44:04,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 07:44:04,865 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 07:44:04,865 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:44:05,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:44:05,088 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 07:44:05,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:44:05 BoogieIcfgContainer [2020-12-23 07:44:05,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:44:05,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:44:05,089 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:44:05,089 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:44:05,090 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:43:58" (3/4) ... [2020-12-23 07:44:05,093 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:44:05,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:44:05,095 INFO L168 Benchmark]: Toolchain (without parser) took 7466.76 ms. Allocated memory is still 151.0 MB. Free memory was 111.7 MB in the beginning and 94.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:44:05,095 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:44:05,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.30 ms. Allocated memory is still 151.0 MB. Free memory was 111.5 MB in the beginning and 132.1 MB in the end (delta: -20.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:44:05,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.67 ms. Allocated memory is still 151.0 MB. Free memory was 131.6 MB in the beginning and 130.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:44:05,098 INFO L168 Benchmark]: Boogie Preprocessor took 40.45 ms. Allocated memory is still 151.0 MB. Free memory was 130.5 MB in the beginning and 129.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:44:05,099 INFO L168 Benchmark]: RCFGBuilder took 587.50 ms. Allocated memory is still 151.0 MB. Free memory was 129.0 MB in the beginning and 123.3 MB in the end (delta: 5.6 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-12-23 07:44:05,100 INFO L168 Benchmark]: TraceAbstraction took 6446.68 ms. Allocated memory is still 151.0 MB. Free memory was 122.5 MB in the beginning and 94.3 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. [2020-12-23 07:44:05,100 INFO L168 Benchmark]: Witness Printer took 4.78 ms. Allocated memory is still 151.0 MB. Free memory is still 94.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:44:05,104 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 313.30 ms. Allocated memory is still 151.0 MB. Free memory was 111.5 MB in the beginning and 132.1 MB in the end (delta: -20.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 60.67 ms. Allocated memory is still 151.0 MB. Free memory was 131.6 MB in the beginning and 130.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.45 ms. Allocated memory is still 151.0 MB. Free memory was 130.5 MB in the beginning and 129.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 587.50 ms. Allocated memory is still 151.0 MB. Free memory was 129.0 MB in the beginning and 123.3 MB in the end (delta: 5.6 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6446.68 ms. Allocated memory is still 151.0 MB. Free memory was 122.5 MB in the beginning and 94.3 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. * Witness Printer took 4.78 ms. Allocated memory is still 151.0 MB. Free memory is still 94.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int counter = 0; [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) [L9] COND FALSE !(!cond) [L30] u = ((long long) 2 * R) + 1 [L31] v = 1 [L32] r = ((long long) R * R) - A [L34] EXPR counter++ [L34] COND TRUE counter++<20 [L12] COND FALSE !(!(cond)) [L36] COND TRUE !(r != 0) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 6.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 39 SDslu, 56 SDs, 0 SdLazy, 50 SolverSat, 6 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 2004 SizeOfPredicates, 8 NumberOfNonLiveVariables, 203 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...