/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/ps4-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 08:04:54,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 08:04:54,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 08:04:54,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 08:04:54,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 08:04:54,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 08:04:54,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 08:04:54,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 08:04:54,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 08:04:54,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 08:04:54,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 08:04:54,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 08:04:54,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 08:04:54,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 08:04:54,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 08:04:54,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 08:04:54,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 08:04:54,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 08:04:54,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 08:04:54,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 08:04:54,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 08:04:54,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 08:04:54,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 08:04:54,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 08:04:54,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 08:04:54,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 08:04:54,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 08:04:54,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 08:04:54,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 08:04:54,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 08:04:54,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 08:04:54,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 08:04:54,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 08:04:54,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 08:04:54,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 08:04:54,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 08:04:54,728 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 08:04:54,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 08:04:54,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 08:04:54,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 08:04:54,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 08:04:54,782 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 08:04:54,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 08:04:54,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 08:04:54,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 08:04:54,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 08:04:54,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 08:04:54,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 08:04:54,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 08:04:54,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 08:04:54,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 08:04:54,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 08:04:54,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 08:04:54,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 08:04:54,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 08:04:54,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 08:04:54,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 08:04:54,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 08:04:54,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 08:04:54,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 08:04:54,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 08:04:54,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 08:04:54,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 08:04:55,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 08:04:55,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 08:04:55,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 08:04:55,257 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 08:04:55,258 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 08:04:55,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound5.c [2020-12-23 08:04:55,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/76090c445/05914903883648c0a348eaa6eac0738f/FLAG92b16b790 [2020-12-23 08:04:56,074 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 08:04:56,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound5.c [2020-12-23 08:04:56,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/76090c445/05914903883648c0a348eaa6eac0738f/FLAG92b16b790 [2020-12-23 08:04:56,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/76090c445/05914903883648c0a348eaa6eac0738f [2020-12-23 08:04:56,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 08:04:56,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 08:04:56,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 08:04:56,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 08:04:56,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 08:04:56,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:04:56" (1/1) ... [2020-12-23 08:04:56,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ba1df1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:56, skipping insertion in model container [2020-12-23 08:04:56,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:04:56" (1/1) ... [2020-12-23 08:04:56,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 08:04:56,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 08:04:56,613 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/ps4-ll_unwindbound5.c[458,471] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 08:04:56,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:04:56,643 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 08:04:56,658 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/ps4-ll_unwindbound5.c[458,471] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 08:04:56,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:04:56,682 INFO L208 MainTranslator]: Completed translation [2020-12-23 08:04:56,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:56 WrapperNode [2020-12-23 08:04:56,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 08:04:56,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 08:04:56,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 08:04:56,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 08:04:56,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:56" (1/1) ... [2020-12-23 08:04:56,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:56" (1/1) ... [2020-12-23 08:04:56,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 08:04:56,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 08:04:56,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 08:04:56,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 08:04:56,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:56" (1/1) ... [2020-12-23 08:04:56,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:56" (1/1) ... [2020-12-23 08:04:56,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:56" (1/1) ... [2020-12-23 08:04:56,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:56" (1/1) ... [2020-12-23 08:04:56,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:56" (1/1) ... [2020-12-23 08:04:56,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:56" (1/1) ... [2020-12-23 08:04:56,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:56" (1/1) ... [2020-12-23 08:04:56,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 08:04:56,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 08:04:56,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 08:04:56,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 08:04:56,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:56" (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 08:04:56,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 08:04:56,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 08:04:56,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 08:04:56,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 08:04:57,110 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 08:04:57,110 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-23 08:04:57,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:04:57 BoogieIcfgContainer [2020-12-23 08:04:57,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 08:04:57,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 08:04:57,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 08:04:57,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 08:04:57,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 08:04:56" (1/3) ... [2020-12-23 08:04:57,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1851788e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:04:57, skipping insertion in model container [2020-12-23 08:04:57,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:56" (2/3) ... [2020-12-23 08:04:57,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1851788e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:04:57, skipping insertion in model container [2020-12-23 08:04:57,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:04:57" (3/3) ... [2020-12-23 08:04:57,122 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound5.c [2020-12-23 08:04:57,130 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 08:04:57,136 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-23 08:04:57,161 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-23 08:04:57,195 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 08:04:57,195 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 08:04:57,196 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 08:04:57,196 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 08:04:57,196 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 08:04:57,196 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 08:04:57,196 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 08:04:57,196 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 08:04:57,215 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-23 08:04:57,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 08:04:57,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:04:57,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 08:04:57,223 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:04:57,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:04:57,231 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-23 08:04:57,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:04:57,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581163785] [2020-12-23 08:04:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:04:57,417 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:04:57,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034363958] [2020-12-23 08:04:57,419 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 08:04:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:04:57,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 08:04:57,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:04:57,665 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 08:04:57,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581163785] [2020-12-23 08:04:57,667 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:04:57,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034363958] [2020-12-23 08:04:57,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:04:57,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 08:04:57,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748660586] [2020-12-23 08:04:57,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 08:04:57,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:04:57,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 08:04:57,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 08:04:57,706 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-12-23 08:04:57,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:04:57,872 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-12-23 08:04:57,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 08:04:57,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-23 08:04:57,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:04:57,885 INFO L225 Difference]: With dead ends: 54 [2020-12-23 08:04:57,885 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 08:04:57,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 08:04:57,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 08:04:57,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-12-23 08:04:57,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 08:04:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-12-23 08:04:57,939 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2020-12-23 08:04:57,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:04:57,939 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-12-23 08:04:57,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 08:04:57,941 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-12-23 08:04:57,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 08:04:57,942 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:04:57,942 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 08:04:58,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-23 08:04:58,157 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:04:58,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:04:58,158 INFO L82 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2020-12-23 08:04:58,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:04:58,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896800053] [2020-12-23 08:04:58,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:04:58,195 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:04:58,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496105652] [2020-12-23 08:04:58,196 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 08:04:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:04:58,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 08:04:58,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:04:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:04:58,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896800053] [2020-12-23 08:04:58,407 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:04:58,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496105652] [2020-12-23 08:04:58,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:04:58,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 08:04:58,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141151663] [2020-12-23 08:04:58,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:04:58,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:04:58,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:04:58,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:04:58,412 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2020-12-23 08:04:58,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:04:58,483 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-12-23 08:04:58,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 08:04:58,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-23 08:04:58,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:04:58,486 INFO L225 Difference]: With dead ends: 37 [2020-12-23 08:04:58,486 INFO L226 Difference]: Without dead ends: 31 [2020-12-23 08:04:58,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:04:58,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-23 08:04:58,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2020-12-23 08:04:58,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-23 08:04:58,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-12-23 08:04:58,494 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 10 [2020-12-23 08:04:58,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:04:58,495 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-12-23 08:04:58,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:04:58,495 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-12-23 08:04:58,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 08:04:58,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:04:58,496 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:04:58,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:04:58,710 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:04:58,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:04:58,714 INFO L82 PathProgramCache]: Analyzing trace with hash 757648847, now seen corresponding path program 1 times [2020-12-23 08:04:58,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:04:58,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112741600] [2020-12-23 08:04:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:04:58,782 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:04:58,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2116739518] [2020-12-23 08:04:58,782 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 08:04:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:04:58,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 08:04:58,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:04:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:04:58,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112741600] [2020-12-23 08:04:58,907 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:04:58,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116739518] [2020-12-23 08:04:58,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:04:58,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 08:04:58,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757110388] [2020-12-23 08:04:58,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 08:04:58,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:04:58,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 08:04:58,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 08:04:58,909 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-12-23 08:04:58,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:04:58,936 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-12-23 08:04:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:04:58,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 08:04:58,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:04:58,938 INFO L225 Difference]: With dead ends: 30 [2020-12-23 08:04:58,938 INFO L226 Difference]: Without dead ends: 26 [2020-12-23 08:04:58,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:04:58,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-23 08:04:58,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-23 08:04:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-23 08:04:58,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-12-23 08:04:58,945 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 11 [2020-12-23 08:04:58,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:04:58,945 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-12-23 08:04:58,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 08:04:58,945 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-12-23 08:04:58,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 08:04:58,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:04:58,946 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:04:59,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:04:59,161 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:04:59,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:04:59,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1997070616, now seen corresponding path program 1 times [2020-12-23 08:04:59,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:04:59,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132968837] [2020-12-23 08:04:59,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:04:59,179 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:04:59,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926518134] [2020-12-23 08:04:59,180 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 08:04:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:04:59,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 08:04:59,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:04:59,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132968837] [2020-12-23 08:04:59,267 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:04:59,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926518134] [2020-12-23 08:04:59,268 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-23 08:04:59,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:04:59,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 08:04:59,269 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 08:04:59,269 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 08:04:59,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:04:59,507 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 08:04:59,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 08:04:59 BoogieIcfgContainer [2020-12-23 08:04:59,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 08:04:59,508 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 08:04:59,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 08:04:59,508 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 08:04:59,509 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:04:57" (3/4) ... [2020-12-23 08:04:59,513 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 08:04:59,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 08:04:59,515 INFO L168 Benchmark]: Toolchain (without parser) took 3090.00 ms. Allocated memory is still 162.5 MB. Free memory was 137.7 MB in the beginning and 117.4 MB in the end (delta: 20.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:59,516 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 162.5 MB. Free memory is still 135.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 08:04:59,516 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.28 ms. Allocated memory is still 162.5 MB. Free memory was 137.7 MB in the beginning and 127.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:59,517 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.84 ms. Allocated memory is still 162.5 MB. Free memory was 127.9 MB in the beginning and 126.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:59,518 INFO L168 Benchmark]: Boogie Preprocessor took 24.66 ms. Allocated memory is still 162.5 MB. Free memory was 126.2 MB in the beginning and 125.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:59,519 INFO L168 Benchmark]: RCFGBuilder took 364.66 ms. Allocated memory is still 162.5 MB. Free memory was 125.1 MB in the beginning and 112.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:59,520 INFO L168 Benchmark]: TraceAbstraction took 2392.92 ms. Allocated memory is still 162.5 MB. Free memory was 111.5 MB in the beginning and 117.9 MB in the end (delta: -6.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 08:04:59,520 INFO L168 Benchmark]: Witness Printer took 4.90 ms. Allocated memory is still 162.5 MB. Free memory was 117.9 MB in the beginning and 117.4 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 08:04:59,525 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 162.5 MB. Free memory is still 135.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 257.28 ms. Allocated memory is still 162.5 MB. Free memory was 137.7 MB in the beginning and 127.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.84 ms. Allocated memory is still 162.5 MB. Free memory was 127.9 MB in the beginning and 126.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.66 ms. Allocated memory is still 162.5 MB. Free memory was 126.2 MB in the beginning and 125.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 364.66 ms. Allocated memory is still 162.5 MB. Free memory was 125.1 MB in the beginning and 112.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2392.92 ms. Allocated memory is still 162.5 MB. Free memory was 111.5 MB in the beginning and 117.9 MB in the end (delta: -6.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 4.90 ms. Allocated memory is still 162.5 MB. Free memory was 117.9 MB in the beginning and 117.4 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: 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: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L23] y = 0 [L24] x = 0 [L25] c = 0 [L27] EXPR counter++ [L27] COND TRUE counter++<5 [L10] COND FALSE !(!(cond)) [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x [L27] EXPR counter++ [L27] COND TRUE counter++<5 [L10] COND FALSE !(!(cond)) [L30] COND TRUE !(c < k) [L10] COND TRUE !(cond) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 36 SDslu, 99 SDs, 0 SdLazy, 60 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=2, 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, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 839 SizeOfPredicates, 9 NumberOfNonLiveVariables, 199 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/5 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...