/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_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:38:02,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:38:02,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:38:02,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:38:02,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:38:02,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:38:02,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:38:02,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:38:02,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:38:02,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:38:02,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:38:02,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:38:02,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:38:02,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:38:02,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:38:02,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:38:02,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:38:02,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:38:02,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:38:02,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:38:02,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:38:02,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:38:02,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:38:02,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:38:02,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:38:02,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:38:02,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:38:02,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:38:02,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:38:02,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:38:02,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:38:02,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:38:02,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:38:02,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:38:02,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:38:02,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:38:02,260 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 17:38:02,288 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:38:02,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:38:02,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:38:02,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:38:02,290 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:38:02,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:38:02,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:38:02,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:38:02,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:38:02,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:38:02,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:38:02,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:38:02,291 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:38:02,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:38:02,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:38:02,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:38:02,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:38:02,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:38:02,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:38:02,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:38:02,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:38:02,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:38:02,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:38:02,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:38:02,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:38:02,294 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:38:02,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:38:02,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:38:02,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:38:02,661 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:38:02,662 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:38:02,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound1.c [2021-01-06 17:38:02,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5cd81c75c/ddbae095c36f4860aa285d0e232cb85a/FLAG0af8a5560 [2021-01-06 17:38:03,336 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:38:03,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound1.c [2021-01-06 17:38:03,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5cd81c75c/ddbae095c36f4860aa285d0e232cb85a/FLAG0af8a5560 [2021-01-06 17:38:03,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5cd81c75c/ddbae095c36f4860aa285d0e232cb85a [2021-01-06 17:38:03,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:38:03,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:38:03,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:38:03,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:38:03,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:38:03,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:38:03" (1/1) ... [2021-01-06 17:38:03,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@389b2949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:03, skipping insertion in model container [2021-01-06 17:38:03,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:38:03" (1/1) ... [2021-01-06 17:38:03,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:38:03,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:38:03,844 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_unwindbound1.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,] [2021-01-06 17:38:03,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:38:03,874 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:38:03,888 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_unwindbound1.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,] [2021-01-06 17:38:03,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:38:03,918 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:38:03,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:03 WrapperNode [2021-01-06 17:38:03,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:38:03,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:38:03,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:38:03,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:38:03,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:03" (1/1) ... [2021-01-06 17:38:03,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:03" (1/1) ... [2021-01-06 17:38:03,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:38:03,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:38:03,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:38:03,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:38:03,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:03" (1/1) ... [2021-01-06 17:38:03,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:03" (1/1) ... [2021-01-06 17:38:03,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:03" (1/1) ... [2021-01-06 17:38:03,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:03" (1/1) ... [2021-01-06 17:38:03,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:03" (1/1) ... [2021-01-06 17:38:03,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:03" (1/1) ... [2021-01-06 17:38:03,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:03" (1/1) ... [2021-01-06 17:38:03,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:38:03,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:38:03,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:38:03,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:38:03,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:03" (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 17:38:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:38:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:38:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:38:04,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:38:04,364 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:38:04,365 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-01-06 17:38:04,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:38:04 BoogieIcfgContainer [2021-01-06 17:38:04,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:38:04,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:38:04,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:38:04,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:38:04,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:38:03" (1/3) ... [2021-01-06 17:38:04,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c9549e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:38:04, skipping insertion in model container [2021-01-06 17:38:04,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:03" (2/3) ... [2021-01-06 17:38:04,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c9549e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:38:04, skipping insertion in model container [2021-01-06 17:38:04,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:38:04" (3/3) ... [2021-01-06 17:38:04,423 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_unwindbound1.c [2021-01-06 17:38:04,440 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:38:04,452 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:38:04,493 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:38:04,540 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:38:04,540 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:38:04,541 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:38:04,541 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:38:04,543 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:38:04,543 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:38:04,543 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:38:04,548 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:38:04,564 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2021-01-06 17:38:04,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:38:04,570 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:38:04,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:38:04,571 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:38:04,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:38:04,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1235340721, now seen corresponding path program 1 times [2021-01-06 17:38:04,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:38:04,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26152690] [2021-01-06 17:38:04,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:38:04,689 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:38:04,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879641795] [2021-01-06 17:38:04,690 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 17:38:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:38:04,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2021-01-06 17:38:04,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:38:04,798 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 17:38:04,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26152690] [2021-01-06 17:38:04,799 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:38:04,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879641795] [2021-01-06 17:38:04,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:38:04,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:38:04,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719052854] [2021-01-06 17:38:04,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:38:04,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:38:04,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:38:04,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:38:04,825 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2021-01-06 17:38:04,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:38:04,843 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2021-01-06 17:38:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:38:04,844 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 17:38:04,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:38:04,853 INFO L225 Difference]: With dead ends: 39 [2021-01-06 17:38:04,854 INFO L226 Difference]: Without dead ends: 17 [2021-01-06 17:38:04,857 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 [2021-01-06 17:38:04,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-01-06 17:38:04,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-01-06 17:38:04,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-01-06 17:38:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-01-06 17:38:04,894 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2021-01-06 17:38:04,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:38:04,894 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-01-06 17:38:04,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:38:04,895 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-01-06 17:38:04,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:38:04,895 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:38:04,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:38:05,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-01-06 17:38:05,110 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:38:05,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:38:05,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2021-01-06 17:38:05,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:38:05,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456409698] [2021-01-06 17:38:05,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:38:05,142 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:38:05,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356706404] [2021-01-06 17:38:05,145 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 17:38:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:38:05,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:38:05,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:38:05,491 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 17:38:05,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456409698] [2021-01-06 17:38:05,493 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:38:05,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356706404] [2021-01-06 17:38:05,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:38:05,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:38:05,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405256863] [2021-01-06 17:38:05,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:38:05,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:38:05,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:38:05,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:38:05,499 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 6 states. [2021-01-06 17:38:07,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:38:07,726 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-01-06 17:38:07,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:38:07,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-01-06 17:38:07,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:38:07,728 INFO L225 Difference]: With dead ends: 32 [2021-01-06 17:38:07,728 INFO L226 Difference]: Without dead ends: 30 [2021-01-06 17:38:07,730 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 [2021-01-06 17:38:07,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-01-06 17:38:07,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2021-01-06 17:38:07,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:38:07,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-01-06 17:38:07,737 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2021-01-06 17:38:07,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:38:07,738 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-01-06 17:38:07,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:38:07,738 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-01-06 17:38:07,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:38:07,739 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:38:07,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:38:07,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:38:07,954 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:38:07,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:38:07,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1507424085, now seen corresponding path program 1 times [2021-01-06 17:38:07,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:38:07,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828181239] [2021-01-06 17:38:07,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:38:07,971 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:38:07,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567971805] [2021-01-06 17:38:07,972 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 17:38:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:38:08,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 17:38:08,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:38:08,057 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 17:38:08,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828181239] [2021-01-06 17:38:08,058 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:38:08,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567971805] [2021-01-06 17:38:08,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:38:08,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:38:08,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006281565] [2021-01-06 17:38:08,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:38:08,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:38:08,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:38:08,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:38:08,061 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2021-01-06 17:38:08,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:38:08,077 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-01-06 17:38:08,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:38:08,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 17:38:08,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:38:08,078 INFO L225 Difference]: With dead ends: 24 [2021-01-06 17:38:08,079 INFO L226 Difference]: Without dead ends: 20 [2021-01-06 17:38:08,079 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 [2021-01-06 17:38:08,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-01-06 17:38:08,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-01-06 17:38:08,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:38:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-01-06 17:38:08,085 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2021-01-06 17:38:08,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:38:08,085 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-01-06 17:38:08,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:38:08,086 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-01-06 17:38:08,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:38:08,086 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:38:08,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:38:08,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:38:08,300 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:38:08,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:38:08,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1189458428, now seen corresponding path program 1 times [2021-01-06 17:38:08,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:38:08,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479021208] [2021-01-06 17:38:08,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:38:08,313 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:38:08,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [361420253] [2021-01-06 17:38:08,313 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 17:38:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:38:08,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 17:38:08,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:38:10,419 WARN L197 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 24 [2021-01-06 17:38:10,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479021208] [2021-01-06 17:38:10,612 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:38:10,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361420253] [2021-01-06 17:38:10,613 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 17:38:10,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:38:10,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:38:10,613 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:38:10,614 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:38:10,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:38:10,834 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:38:10,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:38:10 BoogieIcfgContainer [2021-01-06 17:38:10,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:38:10,835 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:38:10,835 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:38:10,836 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:38:10,836 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:38:04" (3/4) ... [2021-01-06 17:38:10,842 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:38:10,843 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:38:10,845 INFO L168 Benchmark]: Toolchain (without parser) took 7180.42 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 114.1 MB in the end (delta: 12.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:10,848 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:38:10,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.89 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:10,857 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.81 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:10,858 INFO L168 Benchmark]: Boogie Preprocessor took 34.44 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 113.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:10,858 INFO L168 Benchmark]: RCFGBuilder took 392.59 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 133.2 MB in the end (delta: -19.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:10,861 INFO L168 Benchmark]: TraceAbstraction took 6442.45 ms. Allocated memory is still 151.0 MB. Free memory was 133.2 MB in the beginning and 114.6 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:10,861 INFO L168 Benchmark]: Witness Printer took 7.61 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 114.1 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:10,868 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 250.89 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 35.81 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.44 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 113.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 392.59 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 133.2 MB in the end (delta: -19.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6442.45 ms. Allocated memory is still 151.0 MB. Free memory was 133.2 MB in the beginning and 114.6 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. * Witness Printer took 7.61 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 114.1 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. 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++<1 [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: 6.2s, 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, 0.3s 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...