/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/geo1-u_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:46:13,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:46:13,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:46:13,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:46:13,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:46:13,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:46:13,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:46:13,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:46:13,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:46:13,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:46:13,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:46:13,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:46:13,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:46:13,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:46:13,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:46:13,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:46:13,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:46:13,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:46:13,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:46:13,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:46:13,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:46:13,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:46:13,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:46:13,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:46:13,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 07:46:13,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 07:46:13,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 07:46:13,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 07:46:13,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 07:46:13,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 07:46:13,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:46:13,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:46:13,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:46:13,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:46:13,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:46:13,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:46:13,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:46:13,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:46:13,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:46:13,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:46:13,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:46:13,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:46:13,425 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:46:13,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:46:13,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:46:13,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:46:13,428 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:46:13,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:46:13,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:46:13,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:46:13,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:46:13,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:46:13,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:46:13,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:46:13,429 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:46:13,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:46:13,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:46:13,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:46:13,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:46:13,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:46:13,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:46:13,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:46:13,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:46:13,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:46:13,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:46:13,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:46:13,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:46:13,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:46:13,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:46:13,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:46:13,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:46:13,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:46:13,847 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:46:13,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c [2020-12-23 07:46:13,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dec0f23b0/b800a92e8a864029ad6969334c938df7/FLAGeb5d670d7 [2020-12-23 07:46:14,558 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:46:14,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c [2020-12-23 07:46:14,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dec0f23b0/b800a92e8a864029ad6969334c938df7/FLAGeb5d670d7 [2020-12-23 07:46:14,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dec0f23b0/b800a92e8a864029ad6969334c938df7 [2020-12-23 07:46:14,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:46:14,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:46:14,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:46:14,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:46:14,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:46:14,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:46:14" (1/1) ... [2020-12-23 07:46:14,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1893ddde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:14, skipping insertion in model container [2020-12-23 07:46:14,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:46:14" (1/1) ... [2020-12-23 07:46:14,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:46:15,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:46:15,223 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/geo1-u_valuebound20.c[555,568] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 07:46:15,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:46:15,257 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:46:15,272 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/geo1-u_valuebound20.c[555,568] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 07:46:15,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:46:15,295 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:46:15,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:15 WrapperNode [2020-12-23 07:46:15,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:46:15,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:46:15,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:46:15,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:46:15,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:15" (1/1) ... [2020-12-23 07:46:15,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:15" (1/1) ... [2020-12-23 07:46:15,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:46:15,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:46:15,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:46:15,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:46:15,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:15" (1/1) ... [2020-12-23 07:46:15,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:15" (1/1) ... [2020-12-23 07:46:15,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:15" (1/1) ... [2020-12-23 07:46:15,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:15" (1/1) ... [2020-12-23 07:46:15,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:15" (1/1) ... [2020-12-23 07:46:15,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:15" (1/1) ... [2020-12-23 07:46:15,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:15" (1/1) ... [2020-12-23 07:46:15,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:46:15,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:46:15,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:46:15,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:46:15,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:46:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:46:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:46:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:46:15,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:46:15,717 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:46:15,718 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-23 07:46:15,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:46:15 BoogieIcfgContainer [2020-12-23 07:46:15,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:46:15,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:46:15,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:46:15,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:46:15,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:46:14" (1/3) ... [2020-12-23 07:46:15,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf33371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:46:15, skipping insertion in model container [2020-12-23 07:46:15,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:15" (2/3) ... [2020-12-23 07:46:15,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf33371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:46:15, skipping insertion in model container [2020-12-23 07:46:15,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:46:15" (3/3) ... [2020-12-23 07:46:15,729 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound20.c [2020-12-23 07:46:15,736 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:46:15,741 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 07:46:15,766 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 07:46:15,798 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:46:15,798 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:46:15,799 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:46:15,799 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:46:15,799 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:46:15,799 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:46:15,799 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:46:15,800 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:46:15,818 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-12-23 07:46:15,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:46:15,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:46:15,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:46:15,826 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:46:15,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:46:15,834 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2020-12-23 07:46:15,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:46:15,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80403196] [2020-12-23 07:46:15,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:46:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:46:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:46:16,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80403196] [2020-12-23 07:46:16,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:46:16,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:46:16,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976206136] [2020-12-23 07:46:16,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:46:16,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:46:16,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:46:16,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:46:16,160 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-12-23 07:46:16,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:46:16,184 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2020-12-23 07:46:16,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:46:16,185 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-23 07:46:16,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:46:16,197 INFO L225 Difference]: With dead ends: 35 [2020-12-23 07:46:16,197 INFO L226 Difference]: Without dead ends: 15 [2020-12-23 07:46:16,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:46:16,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-23 07:46:16,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-23 07:46:16,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-23 07:46:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-23 07:46:16,242 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2020-12-23 07:46:16,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:46:16,242 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-23 07:46:16,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:46:16,242 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-23 07:46:16,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:46:16,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:46:16,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:46:16,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:46:16,245 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:46:16,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:46:16,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2020-12-23 07:46:16,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:46:16,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992650672] [2020-12-23 07:46:16,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:46:16,296 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:46:16,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707675537] [2020-12-23 07:46:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:46:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:46:16,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 07:46:16,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:46:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:46:16,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992650672] [2020-12-23 07:46:16,506 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:46:16,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707675537] [2020-12-23 07:46:16,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:46:16,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:46:16,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469871930] [2020-12-23 07:46:16,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:46:16,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:46:16,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:46:16,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:46:16,510 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 6 states. [2020-12-23 07:46:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:46:16,637 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-12-23 07:46:16,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:46:16,638 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-23 07:46:16,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:46:16,640 INFO L225 Difference]: With dead ends: 22 [2020-12-23 07:46:16,640 INFO L226 Difference]: Without dead ends: 20 [2020-12-23 07:46:16,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:46:16,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-23 07:46:16,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2020-12-23 07:46:16,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-23 07:46:16,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-12-23 07:46:16,652 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 9 [2020-12-23 07:46:16,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:46:16,654 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-12-23 07:46:16,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:46:16,654 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-12-23 07:46:16,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 07:46:16,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:46:16,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:46:16,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:46:16,871 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:46:16,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:46:16,873 INFO L82 PathProgramCache]: Analyzing trace with hash 636924791, now seen corresponding path program 1 times [2020-12-23 07:46:16,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:46:16,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123674602] [2020-12-23 07:46:16,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:46:16,897 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:46:16,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542797476] [2020-12-23 07:46:16,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:46:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 07:46:16,946 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 07:46:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 07:46:17,000 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 07:46:17,047 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 07:46:17,048 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:46:17,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:46:17,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:46:17 BoogieIcfgContainer [2020-12-23 07:46:17,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:46:17,299 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:46:17,299 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:46:17,299 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:46:17,299 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:46:15" (3/4) ... [2020-12-23 07:46:17,302 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 07:46:17,357 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/geo1-u_valuebound20.c-witness.graphml [2020-12-23 07:46:17,357 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:46:17,359 INFO L168 Benchmark]: Toolchain (without parser) took 2391.98 ms. Allocated memory is still 160.4 MB. Free memory was 134.8 MB in the beginning and 135.9 MB in the end (delta: -1.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:46:17,360 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 160.4 MB. Free memory is still 134.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:46:17,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.87 ms. Allocated memory is still 160.4 MB. Free memory was 134.8 MB in the beginning and 124.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:46:17,361 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.58 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:46:17,362 INFO L168 Benchmark]: Boogie Preprocessor took 28.80 ms. Allocated memory is still 160.4 MB. Free memory was 123.3 MB in the beginning and 122.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:46:17,363 INFO L168 Benchmark]: RCFGBuilder took 354.87 ms. Allocated memory is still 160.4 MB. Free memory was 122.2 MB in the beginning and 109.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-23 07:46:17,364 INFO L168 Benchmark]: TraceAbstraction took 1576.55 ms. Allocated memory is still 160.4 MB. Free memory was 108.6 MB in the beginning and 138.5 MB in the end (delta: -29.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:46:17,365 INFO L168 Benchmark]: Witness Printer took 58.40 ms. Allocated memory is still 160.4 MB. Free memory was 138.5 MB in the beginning and 135.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:46:17,369 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 160.4 MB. Free memory is still 134.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 325.87 ms. Allocated memory is still 160.4 MB. Free memory was 134.8 MB in the beginning and 124.9 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 37.58 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.80 ms. Allocated memory is still 160.4 MB. Free memory was 123.3 MB in the beginning and 122.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 354.87 ms. Allocated memory is still 160.4 MB. Free memory was 122.2 MB in the beginning and 109.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1576.55 ms. Allocated memory is still 160.4 MB. Free memory was 108.6 MB in the beginning and 138.5 MB in the end (delta: -29.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 58.40 ms. Allocated memory is still 160.4 MB. Free memory was 138.5 MB in the beginning and 135.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_uint() [L13] COND FALSE !(!cond) [L27] k = __VERIFIER_nondet_uint() [L13] COND FALSE !(!cond) [L30] x = 1 [L31] y = z [L32] c = 1 [L34] COND TRUE 1 [L16] COND FALSE !(!(cond)) [L37] COND TRUE !(c < k) [L46] x = x * (z - 1) [L16] COND TRUE !(cond) [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 19 SDslu, 22 SDs, 0 SdLazy, 28 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 488 SizeOfPredicates, 6 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...