/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_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:40:10,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:40:10,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:40:10,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:40:10,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:40:10,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:40:10,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:40:10,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:40:10,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:40:10,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:40:10,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:40:10,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:40:10,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:40:10,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:40:10,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:40:10,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:40:10,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:40:10,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:40:10,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:40:10,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:40:10,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:40:10,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:40:10,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:40:10,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:40:10,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:40:10,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:40:10,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:40:10,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:40:10,271 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 17:40:10,319 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:40:10,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:40:10,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:40:10,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:40:10,324 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:40:10,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:40:10,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:40:10,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:40:10,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:40:10,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:40:10,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:40:10,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:40:10,327 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:40:10,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:40:10,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:40:10,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:40:10,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:40:10,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:40:10,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:40:10,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:40:10,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:40:10,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:40:10,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:40:10,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:40:10,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:40:10,330 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:40:10,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:40:10,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:40:10,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:40:10,775 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:40:10,775 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:40:10,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound1.c [2021-01-06 17:40:10,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a4654f035/c940fc3236e749ca94b6054d138989e8/FLAGab682fb7c [2021-01-06 17:40:11,410 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:40:11,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound1.c [2021-01-06 17:40:11,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a4654f035/c940fc3236e749ca94b6054d138989e8/FLAGab682fb7c [2021-01-06 17:40:11,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a4654f035/c940fc3236e749ca94b6054d138989e8 [2021-01-06 17:40:11,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:40:11,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:40:11,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:40:11,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:40:11,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:40:11,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:40:11" (1/1) ... [2021-01-06 17:40:11,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c7c53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:11, skipping insertion in model container [2021-01-06 17:40:11,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:40:11" (1/1) ... [2021-01-06 17:40:11,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:40:11,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:40:12,005 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_valuebound1.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,] [2021-01-06 17:40:12,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:40:12,034 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:40:12,047 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_valuebound1.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,] [2021-01-06 17:40:12,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:40:12,072 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:40:12,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:12 WrapperNode [2021-01-06 17:40:12,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:40:12,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:40:12,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:40:12,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:40:12,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:12" (1/1) ... [2021-01-06 17:40:12,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:12" (1/1) ... [2021-01-06 17:40:12,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:40:12,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:40:12,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:40:12,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:40:12,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:12" (1/1) ... [2021-01-06 17:40:12,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:12" (1/1) ... [2021-01-06 17:40:12,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:12" (1/1) ... [2021-01-06 17:40:12,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:12" (1/1) ... [2021-01-06 17:40:12,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:12" (1/1) ... [2021-01-06 17:40:12,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:12" (1/1) ... [2021-01-06 17:40:12,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:12" (1/1) ... [2021-01-06 17:40:12,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:40:12,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:40:12,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:40:12,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:40:12,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:12" (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 17:40:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:40:12,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:40:12,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:40:12,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:40:12,532 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:40:12,532 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-01-06 17:40:12,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:40:12 BoogieIcfgContainer [2021-01-06 17:40:12,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:40:12,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:40:12,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:40:12,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:40:12,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:40:11" (1/3) ... [2021-01-06 17:40:12,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546e210c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:40:12, skipping insertion in model container [2021-01-06 17:40:12,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:40:12" (2/3) ... [2021-01-06 17:40:12,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546e210c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:40:12, skipping insertion in model container [2021-01-06 17:40:12,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:40:12" (3/3) ... [2021-01-06 17:40:12,544 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound1.c [2021-01-06 17:40:12,552 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:40:12,565 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:40:12,614 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:40:12,671 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:40:12,671 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:40:12,671 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:40:12,672 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:40:12,672 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:40:12,672 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:40:12,672 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:40:12,672 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:40:12,688 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2021-01-06 17:40:12,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:40:12,695 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:40:12,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:40:12,696 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:40:12,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:40:12,704 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-01-06 17:40:12,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:40:12,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053948983] [2021-01-06 17:40:12,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:40:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:40:12,888 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 17:40:12,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053948983] [2021-01-06 17:40:12,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:40:12,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:40:12,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230754689] [2021-01-06 17:40:12,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:40:12,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:40:12,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:40:12,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:40:12,916 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2021-01-06 17:40:12,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:40:12,935 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2021-01-06 17:40:12,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:40:12,936 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-01-06 17:40:12,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:40:12,947 INFO L225 Difference]: With dead ends: 35 [2021-01-06 17:40:12,947 INFO L226 Difference]: Without dead ends: 15 [2021-01-06 17:40:12,951 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 [2021-01-06 17:40:12,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-01-06 17:40:12,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-01-06 17:40:12,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-01-06 17:40:12,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-01-06 17:40:12,990 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2021-01-06 17:40:12,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:40:12,991 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-01-06 17:40:12,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:40:12,991 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-01-06 17:40:12,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:40:12,992 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:40:12,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:40:12,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:40:12,993 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:40:12,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:40:12,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-01-06 17:40:12,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:40:12,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688364335] [2021-01-06 17:40:12,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:40:13,017 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:40:13,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131716645] [2021-01-06 17:40:13,018 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 17:40:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:40:13,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:40:13,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:40:13,293 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 17:40:13,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688364335] [2021-01-06 17:40:13,294 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:40:13,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131716645] [2021-01-06 17:40:13,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:40:13,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:40:13,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458051626] [2021-01-06 17:40:13,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:40:13,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:40:13,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:40:13,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:40:13,299 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 6 states. [2021-01-06 17:40:13,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:40:13,457 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-01-06 17:40:13,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:40:13,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-01-06 17:40:13,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:40:13,459 INFO L225 Difference]: With dead ends: 22 [2021-01-06 17:40:13,459 INFO L226 Difference]: Without dead ends: 20 [2021-01-06 17:40:13,461 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 [2021-01-06 17:40:13,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-01-06 17:40:13,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2021-01-06 17:40:13,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-01-06 17:40:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-01-06 17:40:13,467 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 9 [2021-01-06 17:40:13,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:40:13,467 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-01-06 17:40:13,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:40:13,468 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-01-06 17:40:13,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:40:13,469 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:40:13,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:40:13,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:40:13,684 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:40:13,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:40:13,685 INFO L82 PathProgramCache]: Analyzing trace with hash 636924791, now seen corresponding path program 1 times [2021-01-06 17:40:13,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:40:13,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621114433] [2021-01-06 17:40:13,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:40:13,704 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:40:13,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1374897860] [2021-01-06 17:40:13,705 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 17:40:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 17:40:13,778 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:40:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 17:40:13,851 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:40:13,931 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 17:40:13,931 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:40:14,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:40:14,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:40:14 BoogieIcfgContainer [2021-01-06 17:40:14,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:40:14,179 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:40:14,180 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:40:14,180 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:40:14,181 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:40:12" (3/4) ... [2021-01-06 17:40:14,183 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-06 17:40:14,248 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/geo1-u_valuebound1.c-witness.graphml [2021-01-06 17:40:14,248 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:40:14,250 INFO L168 Benchmark]: Toolchain (without parser) took 2444.52 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 141.7 MB in the beginning and 165.8 MB in the end (delta: -24.1 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:40:14,251 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 158.3 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:40:14,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.97 ms. Allocated memory is still 158.3 MB. Free memory was 141.7 MB in the beginning and 131.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:40:14,253 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.65 ms. Allocated memory is still 158.3 MB. Free memory was 131.8 MB in the beginning and 130.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:40:14,254 INFO L168 Benchmark]: Boogie Preprocessor took 25.37 ms. Allocated memory is still 158.3 MB. Free memory was 130.4 MB in the beginning and 129.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:40:14,254 INFO L168 Benchmark]: RCFGBuilder took 393.24 ms. Allocated memory is still 158.3 MB. Free memory was 129.3 MB in the beginning and 129.6 MB in the end (delta: -279.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:40:14,255 INFO L168 Benchmark]: TraceAbstraction took 1641.19 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 129.0 MB in the beginning and 167.9 MB in the end (delta: -38.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:40:14,256 INFO L168 Benchmark]: Witness Printer took 69.59 ms. Allocated memory is still 190.8 MB. Free memory was 167.9 MB in the beginning and 165.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:40:14,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 158.3 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 261.97 ms. Allocated memory is still 158.3 MB. Free memory was 141.7 MB in the beginning and 131.8 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 39.65 ms. Allocated memory is still 158.3 MB. Free memory was 131.8 MB in the beginning and 130.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.37 ms. Allocated memory is still 158.3 MB. Free memory was 130.4 MB in the beginning and 129.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 393.24 ms. Allocated memory is still 158.3 MB. Free memory was 129.3 MB in the beginning and 129.6 MB in the end (delta: -279.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1641.19 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 129.0 MB in the beginning and 167.9 MB in the end (delta: -38.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 69.59 ms. Allocated memory is still 190.8 MB. Free memory was 167.9 MB in the beginning and 165.8 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: 1.4s, 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...