/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/ps2-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:15:24,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:15:24,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:15:24,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:15:24,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:15:24,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:15:24,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:15:24,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:15:24,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:15:24,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:15:24,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:15:24,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:15:24,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:15:24,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:15:24,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:15:24,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:15:24,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:15:24,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:15:24,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:15:24,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:15:24,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:15:24,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:15:24,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:15:24,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:15:24,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:15:24,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:15:24,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:15:24,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:15:24,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:15:24,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:15:24,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:15:24,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:15:24,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:15:24,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:15:24,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:15:24,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:15:24,655 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 17:15:24,698 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:15:24,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:15:24,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:15:24,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:15:24,703 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:15:24,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:15:24,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:15:24,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:15:24,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:15:24,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:15:24,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:15:24,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:15:24,706 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:15:24,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:15:24,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:15:24,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:15:24,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:15:24,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:15:24,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:15:24,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:15:24,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:15:24,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:15:24,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:15:24,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:15:24,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:15:24,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:15:25,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:15:25,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:15:25,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:15:25,158 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:15:25,158 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:15:25,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/ps2-ll.c [2021-01-06 17:15:25,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e17b716d5/eb69b148cb7e4e15b19b3b1672f8861b/FLAGcca22d4ef [2021-01-06 17:15:25,767 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:15:25,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench/ps2-ll.c [2021-01-06 17:15:25,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e17b716d5/eb69b148cb7e4e15b19b3b1672f8861b/FLAGcca22d4ef [2021-01-06 17:15:26,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e17b716d5/eb69b148cb7e4e15b19b3b1672f8861b [2021-01-06 17:15:26,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:15:26,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:15:26,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:15:26,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:15:26,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:15:26,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:15:26" (1/1) ... [2021-01-06 17:15:26,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab22bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:15:26, skipping insertion in model container [2021-01-06 17:15:26,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:15:26" (1/1) ... [2021-01-06 17:15:26,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:15:26,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:15:26,340 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/ps2-ll.c[454,467] 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,] [2021-01-06 17:15:26,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:15:26,364 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:15:26,378 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/ps2-ll.c[454,467] 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,] [2021-01-06 17:15:26,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:15:26,396 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:15:26,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:15:26 WrapperNode [2021-01-06 17:15:26,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:15:26,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:15:26,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:15:26,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:15:26,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:15:26" (1/1) ... [2021-01-06 17:15:26,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:15:26" (1/1) ... [2021-01-06 17:15:26,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:15:26,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:15:26,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:15:26,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:15:26,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:15:26" (1/1) ... [2021-01-06 17:15:26,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:15:26" (1/1) ... [2021-01-06 17:15:26,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:15:26" (1/1) ... [2021-01-06 17:15:26,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:15:26" (1/1) ... [2021-01-06 17:15:26,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:15:26" (1/1) ... [2021-01-06 17:15:26,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:15:26" (1/1) ... [2021-01-06 17:15:26,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:15:26" (1/1) ... [2021-01-06 17:15:26,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:15:26,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:15:26,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:15:26,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:15:26,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:15:26" (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 17:15:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:15:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:15:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:15:26,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:15:26,803 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:15:26,803 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-01-06 17:15:26,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:15:26 BoogieIcfgContainer [2021-01-06 17:15:26,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:15:26,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:15:26,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:15:26,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:15:26,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:15:26" (1/3) ... [2021-01-06 17:15:26,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee931c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:15:26, skipping insertion in model container [2021-01-06 17:15:26,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:15:26" (2/3) ... [2021-01-06 17:15:26,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee931c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:15:26, skipping insertion in model container [2021-01-06 17:15:26,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:15:26" (3/3) ... [2021-01-06 17:15:26,824 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll.c [2021-01-06 17:15:26,835 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:15:26,840 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:15:26,858 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:15:26,881 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:15:26,881 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:15:26,881 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:15:26,881 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:15:26,881 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:15:26,882 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:15:26,882 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:15:26,882 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:15:26,896 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2021-01-06 17:15:26,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-01-06 17:15:26,901 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:15:26,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-01-06 17:15:26,903 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:15:26,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:15:26,909 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2021-01-06 17:15:26,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:15:26,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537204879] [2021-01-06 17:15:26,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:15:27,017 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:15:27,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838411869] [2021-01-06 17:15:27,018 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 17:15:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:15:27,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 17:15:27,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:15:27,161 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 17:15:27,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537204879] [2021-01-06 17:15:27,162 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:15:27,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838411869] [2021-01-06 17:15:27,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:15:27,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:15:27,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058291799] [2021-01-06 17:15:27,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:15:27,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:15:27,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:15:27,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:15:27,186 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2021-01-06 17:15:27,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:15:27,260 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2021-01-06 17:15:27,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:15:27,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-01-06 17:15:27,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:15:27,273 INFO L225 Difference]: With dead ends: 38 [2021-01-06 17:15:27,273 INFO L226 Difference]: Without dead ends: 15 [2021-01-06 17:15:27,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:15:27,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-01-06 17:15:27,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-01-06 17:15:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-01-06 17:15:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-01-06 17:15:27,326 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-01-06 17:15:27,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:15:27,327 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-01-06 17:15:27,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:15:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-01-06 17:15:27,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:15:27,328 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:15:27,328 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:15:27,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-01-06 17:15:27,543 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:15:27,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:15:27,545 INFO L82 PathProgramCache]: Analyzing trace with hash 300806046, now seen corresponding path program 1 times [2021-01-06 17:15:27,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:15:27,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265190568] [2021-01-06 17:15:27,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:15:27,566 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:15:27,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945004281] [2021-01-06 17:15:27,567 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 17:15:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:15:27,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:15:27,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:15:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:15:27,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265190568] [2021-01-06 17:15:27,717 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:15:27,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945004281] [2021-01-06 17:15:27,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:15:27,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:15:27,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876705572] [2021-01-06 17:15:27,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:15:27,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:15:27,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:15:27,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:15:27,722 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2021-01-06 17:15:27,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:15:27,782 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-01-06 17:15:27,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:15:27,783 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-06 17:15:27,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:15:27,784 INFO L225 Difference]: With dead ends: 24 [2021-01-06 17:15:27,784 INFO L226 Difference]: Without dead ends: 18 [2021-01-06 17:15:27,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:15:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-01-06 17:15:27,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-01-06 17:15:27,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-01-06 17:15:27,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-01-06 17:15:27,796 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 8 [2021-01-06 17:15:27,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:15:27,797 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-01-06 17:15:27,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:15:27,797 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-01-06 17:15:27,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:15:27,799 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:15:27,800 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2021-01-06 17:15:28,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:15:28,015 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:15:28,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:15:28,017 INFO L82 PathProgramCache]: Analyzing trace with hash 2016063466, now seen corresponding path program 2 times [2021-01-06 17:15:28,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:15:28,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482741782] [2021-01-06 17:15:28,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:15:28,032 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:15:28,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606348752] [2021-01-06 17:15:28,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 17:15:28,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:15:28,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:15:28,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 17:15:28,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:15:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:15:28,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482741782] [2021-01-06 17:15:28,167 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:15:28,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606348752] [2021-01-06 17:15:28,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:15:28,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:15:28,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775451364] [2021-01-06 17:15:28,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:15:28,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:15:28,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:15:28,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:15:28,171 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 7 states. [2021-01-06 17:15:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:15:28,237 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-01-06 17:15:28,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:15:28,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2021-01-06 17:15:28,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:15:28,238 INFO L225 Difference]: With dead ends: 27 [2021-01-06 17:15:28,239 INFO L226 Difference]: Without dead ends: 21 [2021-01-06 17:15:28,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:15:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-01-06 17:15:28,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-01-06 17:15:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:15:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-01-06 17:15:28,245 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2021-01-06 17:15:28,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:15:28,245 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-01-06 17:15:28,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:15:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-01-06 17:15:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:15:28,246 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:15:28,246 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2021-01-06 17:15:28,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:15:28,460 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:15:28,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:15:28,462 INFO L82 PathProgramCache]: Analyzing trace with hash -271025122, now seen corresponding path program 3 times [2021-01-06 17:15:28,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:15:28,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065386333] [2021-01-06 17:15:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:15:28,475 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:15:28,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440134568] [2021-01-06 17:15:28,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 17:15:28,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:15:28,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:15:28,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:15:28,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:15:28,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065386333] [2021-01-06 17:15:28,588 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:15:28,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440134568] [2021-01-06 17:15:28,588 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 17:15:28,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:15:28,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:15:28,589 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:15:28,590 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:15:28,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:15:28,816 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:15:28,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:15:28 BoogieIcfgContainer [2021-01-06 17:15:28,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:15:28,817 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:15:28,817 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:15:28,817 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:15:28,818 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:15:26" (3/4) ... [2021-01-06 17:15:28,821 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:15:28,821 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:15:28,824 INFO L168 Benchmark]: Toolchain (without parser) took 2667.07 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 135.3 MB in the beginning and 111.1 MB in the end (delta: 24.2 MB). Peak memory consumption was 54.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:15:28,824 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 152.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:15:28,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.31 ms. Allocated memory is still 152.0 MB. Free memory was 135.1 MB in the beginning and 125.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:15:28,826 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.20 ms. Allocated memory is still 152.0 MB. Free memory was 125.3 MB in the beginning and 123.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:15:28,827 INFO L168 Benchmark]: Boogie Preprocessor took 21.48 ms. Allocated memory is still 152.0 MB. Free memory was 123.8 MB in the beginning and 122.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:15:28,828 INFO L168 Benchmark]: RCFGBuilder took 349.71 ms. Allocated memory is still 152.0 MB. Free memory was 122.7 MB in the beginning and 124.3 MB in the end (delta: -1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:15:28,828 INFO L168 Benchmark]: TraceAbstraction took 2007.76 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 123.7 MB in the beginning and 111.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 43.3 MB. Max. memory is 8.0 GB. [2021-01-06 17:15:28,829 INFO L168 Benchmark]: Witness Printer took 4.62 ms. Allocated memory is still 182.5 MB. Free memory was 111.6 MB in the beginning and 111.1 MB in the end (delta: 539.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:15:28,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 152.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 237.31 ms. Allocated memory is still 152.0 MB. Free memory was 135.1 MB in the beginning and 125.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 35.20 ms. Allocated memory is still 152.0 MB. Free memory was 125.3 MB in the beginning and 123.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 21.48 ms. Allocated memory is still 152.0 MB. Free memory was 123.8 MB in the beginning and 122.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 349.71 ms. Allocated memory is still 152.0 MB. Free memory was 122.7 MB in the beginning and 124.3 MB in the end (delta: -1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2007.76 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 123.7 MB in the beginning and 111.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 43.3 MB. Max. memory is 8.0 GB. * Witness Printer took 4.62 ms. Allocated memory is still 182.5 MB. Free memory was 111.6 MB in the beginning and 111.1 MB in the end (delta: 539.0 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: 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: [L18] int k; [L19] long long y, x, c; [L20] k = __VERIFIER_nondet_int() [L22] y = 0 [L23] x = 0 [L24] c = 0 [L26] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L29] COND FALSE !(!(c < k)) [L32] c = c + 1 [L33] y = y + 1 [L34] x = y + x [L26] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L29] COND FALSE !(!(c < k)) [L32] c = c + 1 [L33] y = y + 1 [L34] x = y + x [L26] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L29] COND FALSE !(!(c < k)) [L32] c = c + 1 [L33] y = y + 1 [L34] x = y + x [L26] COND TRUE 1 [L10] COND TRUE !(cond) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 27 SDslu, 62 SDs, 0 SdLazy, 77 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, 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, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 890 SizeOfPredicates, 13 NumberOfNonLiveVariables, 180 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/9 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...