/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_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:46:07,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:46:07,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:46:07,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:46:07,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:46:07,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:46:07,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:46:07,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:46:07,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:46:07,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:46:07,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:46:07,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:46:07,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:46:07,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:46:07,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:46:07,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:46:07,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:46:07,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:46:07,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:46:07,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:46:07,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:46:07,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:46:07,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:46:07,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:46:07,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:46:07,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:46:07,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:46:07,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:46:07,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:46:07,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:46:07,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:46:07,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:46:07,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:46:07,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:46:07,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:46:07,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:46:07,781 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 07:46:07,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:46:07,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:46:07,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:46:07,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:46:07,811 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:46:07,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:46:07,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:46:07,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:46:07,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:46:07,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:46:07,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:46:07,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:46:07,813 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:46:07,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:46:07,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:46:07,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:46:07,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:46:07,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:46:07,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:46:07,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:46:07,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:46:07,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:46:07,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:46:07,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:46:07,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:46:07,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:46:08,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:46:08,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:46:08,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:46:08,269 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:46:08,270 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:46:08,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound100.c [2020-12-23 07:46:08,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b0a5bf574/1509f5480be04d6db5c4e5b4aa8d1e89/FLAG3b42159f1 [2020-12-23 07:46:09,026 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:46:09,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound100.c [2020-12-23 07:46:09,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b0a5bf574/1509f5480be04d6db5c4e5b4aa8d1e89/FLAG3b42159f1 [2020-12-23 07:46:09,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b0a5bf574/1509f5480be04d6db5c4e5b4aa8d1e89 [2020-12-23 07:46:09,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:46:09,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:46:09,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:46:09,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:46:09,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:46:09,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:46:09" (1/1) ... [2020-12-23 07:46:09,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@753693c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:09, skipping insertion in model container [2020-12-23 07:46:09,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:46:09" (1/1) ... [2020-12-23 07:46:09,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:46:09,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:46:09,552 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_valuebound100.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 07:46:09,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:46:09,578 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:46:09,592 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_valuebound100.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 07:46:09,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:46:09,615 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:46:09,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:09 WrapperNode [2020-12-23 07:46:09,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:46:09,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:46:09,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:46:09,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:46:09,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:09" (1/1) ... [2020-12-23 07:46:09,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:09" (1/1) ... [2020-12-23 07:46:09,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:46:09,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:46:09,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:46:09,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:46:09,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:09" (1/1) ... [2020-12-23 07:46:09,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:09" (1/1) ... [2020-12-23 07:46:09,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:09" (1/1) ... [2020-12-23 07:46:09,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:09" (1/1) ... [2020-12-23 07:46:09,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:09" (1/1) ... [2020-12-23 07:46:09,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:09" (1/1) ... [2020-12-23 07:46:09,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:09" (1/1) ... [2020-12-23 07:46:09,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:46:09,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:46:09,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:46:09,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:46:09,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:09" (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 07:46:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:46:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:46:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:46:09,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:46:10,085 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:46:10,086 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-23 07:46:10,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:46:10 BoogieIcfgContainer [2020-12-23 07:46:10,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:46:10,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:46:10,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:46:10,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:46:10,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:46:09" (1/3) ... [2020-12-23 07:46:10,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ce0a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:46:10, skipping insertion in model container [2020-12-23 07:46:10,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:46:09" (2/3) ... [2020-12-23 07:46:10,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ce0a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:46:10, skipping insertion in model container [2020-12-23 07:46:10,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:46:10" (3/3) ... [2020-12-23 07:46:10,107 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound100.c [2020-12-23 07:46:10,123 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:46:10,134 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 07:46:10,155 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 07:46:10,182 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:46:10,182 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:46:10,182 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:46:10,183 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:46:10,183 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:46:10,183 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:46:10,183 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:46:10,183 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:46:10,200 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-12-23 07:46:10,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:46:10,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:46:10,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:46:10,207 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:46:10,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:46:10,213 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2020-12-23 07:46:10,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:46:10,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422520948] [2020-12-23 07:46:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:46:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:46:10,382 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 07:46:10,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422520948] [2020-12-23 07:46:10,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:46:10,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:46:10,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028021738] [2020-12-23 07:46:10,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:46:10,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:46:10,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:46:10,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:46:10,407 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-12-23 07:46:10,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:46:10,425 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2020-12-23 07:46:10,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:46:10,426 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-23 07:46:10,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:46:10,435 INFO L225 Difference]: With dead ends: 35 [2020-12-23 07:46:10,436 INFO L226 Difference]: Without dead ends: 15 [2020-12-23 07:46:10,439 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 07:46:10,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-23 07:46:10,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-23 07:46:10,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-23 07:46:10,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-23 07:46:10,474 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2020-12-23 07:46:10,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:46:10,475 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-23 07:46:10,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:46:10,475 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-23 07:46:10,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:46:10,476 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:46:10,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:46:10,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:46:10,477 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:46:10,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:46:10,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2020-12-23 07:46:10,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:46:10,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752496889] [2020-12-23 07:46:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:46:10,500 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:46:10,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681212145] [2020-12-23 07:46:10,500 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 07:46:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:46:10,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 07:46:10,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:46:10,739 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 07:46:10,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752496889] [2020-12-23 07:46:10,740 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:46:10,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681212145] [2020-12-23 07:46:10,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:46:10,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:46:10,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678172215] [2020-12-23 07:46:10,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:46:10,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:46:10,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:46:10,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:46:10,744 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 6 states. [2020-12-23 07:46:10,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:46:10,882 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-12-23 07:46:10,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:46:10,883 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-23 07:46:10,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:46:10,884 INFO L225 Difference]: With dead ends: 22 [2020-12-23 07:46:10,884 INFO L226 Difference]: Without dead ends: 20 [2020-12-23 07:46:10,886 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 07:46:10,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-23 07:46:10,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2020-12-23 07:46:10,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-23 07:46:10,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-12-23 07:46:10,891 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 9 [2020-12-23 07:46:10,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:46:10,892 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-12-23 07:46:10,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:46:10,892 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-12-23 07:46:10,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 07:46:10,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:46:10,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:46:11,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:46:11,108 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:46:11,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:46:11,110 INFO L82 PathProgramCache]: Analyzing trace with hash 636924791, now seen corresponding path program 1 times [2020-12-23 07:46:11,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:46:11,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060118200] [2020-12-23 07:46:11,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:46:11,131 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:46:11,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1605862173] [2020-12-23 07:46:11,131 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 07:46:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 07:46:11,206 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 07:46:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 07:46:11,220 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 07:46:11,250 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 07:46:11,253 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:46:11,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:46:11,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:46:11 BoogieIcfgContainer [2020-12-23 07:46:11,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:46:11,496 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:46:11,496 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:46:11,496 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:46:11,496 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:46:10" (3/4) ... [2020-12-23 07:46:11,499 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 07:46:11,544 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/geo1-u_valuebound100.c-witness.graphml [2020-12-23 07:46:11,544 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:46:11,546 INFO L168 Benchmark]: Toolchain (without parser) took 2171.19 ms. Allocated memory is still 151.0 MB. Free memory was 133.5 MB in the beginning and 121.2 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-23 07:46:11,547 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:46:11,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.33 ms. Allocated memory is still 151.0 MB. Free memory was 133.2 MB in the beginning and 123.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:46:11,548 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.76 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 122.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:46:11,549 INFO L168 Benchmark]: Boogie Preprocessor took 33.20 ms. Allocated memory is still 151.0 MB. Free memory was 121.9 MB in the beginning and 134.5 MB in the end (delta: -12.6 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:46:11,550 INFO L168 Benchmark]: RCFGBuilder took 399.97 ms. Allocated memory is still 151.0 MB. Free memory was 134.5 MB in the beginning and 120.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-23 07:46:11,550 INFO L168 Benchmark]: TraceAbstraction took 1402.27 ms. Allocated memory is still 151.0 MB. Free memory was 120.7 MB in the beginning and 123.3 MB in the end (delta: -2.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:46:11,551 INFO L168 Benchmark]: Witness Printer took 48.64 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 121.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:46:11,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 240.33 ms. Allocated memory is still 151.0 MB. Free memory was 133.2 MB in the beginning and 123.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 36.76 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 122.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.20 ms. Allocated memory is still 151.0 MB. Free memory was 121.9 MB in the beginning and 134.5 MB in the end (delta: -12.6 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 399.97 ms. Allocated memory is still 151.0 MB. Free memory was 134.5 MB in the beginning and 120.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1402.27 ms. Allocated memory is still 151.0 MB. Free memory was 120.7 MB in the beginning and 123.3 MB in the end (delta: -2.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 48.64 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 121.2 MB in the end (delta: 2.1 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: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, 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, 0.1s 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...