/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/loop-lit/gsv2008.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:51:14,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:51:14,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:51:14,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:51:14,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:51:14,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:51:14,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:51:14,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:51:14,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:51:14,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:51:14,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:51:14,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:51:14,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:51:14,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:51:14,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:51:14,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:51:14,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:51:14,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:51:14,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:51:14,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:51:14,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:51:14,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:51:14,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:51:14,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:51:14,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:51:14,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:51:14,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:51:14,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:51:14,224 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 16:51:14,280 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:51:14,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:51:14,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:51:14,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:51:14,285 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:51:14,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:51:14,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:51:14,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:51:14,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:51:14,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:51:14,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:51:14,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:51:14,287 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:51:14,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:51:14,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:51:14,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:51:14,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:51:14,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:51:14,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:51:14,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:51:14,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:51:14,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:51:14,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:51:14,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:51:14,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:51:14,290 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:51:14,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:51:14,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:51:14,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:51:14,786 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:51:14,787 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:51:14,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2021-01-06 16:51:14,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/86004aa39/5c0dbfea56fc4d0e8855b7ca6655bffc/FLAG4f332ce28 [2021-01-06 16:51:15,499 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:51:15,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2021-01-06 16:51:15,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/86004aa39/5c0dbfea56fc4d0e8855b7ca6655bffc/FLAG4f332ce28 [2021-01-06 16:51:15,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/86004aa39/5c0dbfea56fc4d0e8855b7ca6655bffc [2021-01-06 16:51:15,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:51:15,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:51:15,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:51:15,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:51:15,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:51:15,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:51:15" (1/1) ... [2021-01-06 16:51:15,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728fbc9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:51:15, skipping insertion in model container [2021-01-06 16:51:15,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:51:15" (1/1) ... [2021-01-06 16:51:15,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:51:15,895 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~0,] [2021-01-06 16:51:16,097 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/loop-lit/gsv2008.c.i.v+cfa-reducer.c[986,999] left hand side expression in assignment: lhs: VariableLHS[~__return_65~0,GLOBAL] [2021-01-06 16:51:16,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:51:16,116 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~0,] [2021-01-06 16:51:16,133 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/loop-lit/gsv2008.c.i.v+cfa-reducer.c[986,999] left hand side expression in assignment: lhs: VariableLHS[~__return_65~0,GLOBAL] [2021-01-06 16:51:16,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:51:16,151 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:51:16,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:51:16 WrapperNode [2021-01-06 16:51:16,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:51:16,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:51:16,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:51:16,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:51:16,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:51:16" (1/1) ... [2021-01-06 16:51:16,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:51:16" (1/1) ... [2021-01-06 16:51:16,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:51:16,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:51:16,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:51:16,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:51:16,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:51:16" (1/1) ... [2021-01-06 16:51:16,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:51:16" (1/1) ... [2021-01-06 16:51:16,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:51:16" (1/1) ... [2021-01-06 16:51:16,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:51:16" (1/1) ... [2021-01-06 16:51:16,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:51:16" (1/1) ... [2021-01-06 16:51:16,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:51:16" (1/1) ... [2021-01-06 16:51:16,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:51:16" (1/1) ... [2021-01-06 16:51:16,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:51:16,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:51:16,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:51:16,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:51:16,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:51:16" (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 16:51:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:51:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:51:16,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:51:16,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:51:16,599 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:51:16,599 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 16:51:16,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:51:16 BoogieIcfgContainer [2021-01-06 16:51:16,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:51:16,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:51:16,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:51:16,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:51:16,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:51:15" (1/3) ... [2021-01-06 16:51:16,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8e45d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:51:16, skipping insertion in model container [2021-01-06 16:51:16,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:51:16" (2/3) ... [2021-01-06 16:51:16,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8e45d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:51:16, skipping insertion in model container [2021-01-06 16:51:16,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:51:16" (3/3) ... [2021-01-06 16:51:16,614 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2021-01-06 16:51:16,623 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:51:16,628 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:51:16,653 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:51:16,708 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:51:16,709 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:51:16,709 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:51:16,709 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:51:16,709 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:51:16,710 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:51:16,710 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:51:16,710 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:51:16,726 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2021-01-06 16:51:16,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 16:51:16,732 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:51:16,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:51:16,734 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:51:16,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:51:16,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1806908747, now seen corresponding path program 1 times [2021-01-06 16:51:16,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:51:16,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999980995] [2021-01-06 16:51:16,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:51:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:51:16,969 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 16:51:16,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999980995] [2021-01-06 16:51:16,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:51:16,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:51:16,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845828750] [2021-01-06 16:51:16,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:51:16,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:51:16,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:51:16,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:51:16,997 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2021-01-06 16:51:17,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:51:17,026 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-01-06 16:51:17,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:51:17,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-01-06 16:51:17,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:51:17,038 INFO L225 Difference]: With dead ends: 21 [2021-01-06 16:51:17,038 INFO L226 Difference]: Without dead ends: 9 [2021-01-06 16:51:17,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:51:17,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-01-06 16:51:17,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-01-06 16:51:17,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-01-06 16:51:17,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-01-06 16:51:17,079 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-01-06 16:51:17,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:51:17,080 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-01-06 16:51:17,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:51:17,080 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-01-06 16:51:17,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 16:51:17,081 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:51:17,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:51:17,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:51:17,082 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:51:17,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:51:17,083 INFO L82 PathProgramCache]: Analyzing trace with hash 179533835, now seen corresponding path program 1 times [2021-01-06 16:51:17,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:51:17,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046636094] [2021-01-06 16:51:17,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:51:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:51:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:51:17,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046636094] [2021-01-06 16:51:17,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167698583] [2021-01-06 16:51:17,241 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 16:51:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:51:17,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 16:51:17,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:51:17,478 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:51:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:51:17,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:51:17,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-01-06 16:51:17,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362575042] [2021-01-06 16:51:17,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 16:51:17,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:51:17,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 16:51:17,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 16:51:17,552 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2021-01-06 16:51:17,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:51:17,640 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-01-06 16:51:17,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 16:51:17,642 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-06 16:51:17,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:51:17,643 INFO L225 Difference]: With dead ends: 13 [2021-01-06 16:51:17,643 INFO L226 Difference]: Without dead ends: 10 [2021-01-06 16:51:17,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 16:51:17,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-01-06 16:51:17,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-01-06 16:51:17,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-01-06 16:51:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-01-06 16:51:17,650 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-01-06 16:51:17,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:51:17,650 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-01-06 16:51:17,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 16:51:17,653 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-01-06 16:51:17,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 16:51:17,654 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:51:17,656 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:51:17,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 16:51:17,872 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:51:17,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:51:17,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1270519115, now seen corresponding path program 2 times [2021-01-06 16:51:17,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:51:17,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486062072] [2021-01-06 16:51:17,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:51:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:51:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:51:17,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486062072] [2021-01-06 16:51:17,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576301766] [2021-01-06 16:51:17,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 16:51:18,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:51:18,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:51:18,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-06 16:51:18,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:51:18,085 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:51:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:51:18,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:51:18,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-01-06 16:51:18,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922650529] [2021-01-06 16:51:18,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 16:51:18,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:51:18,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 16:51:18,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 16:51:18,101 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 7 states. [2021-01-06 16:51:18,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:51:18,136 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-01-06 16:51:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 16:51:18,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2021-01-06 16:51:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:51:18,138 INFO L225 Difference]: With dead ends: 14 [2021-01-06 16:51:18,138 INFO L226 Difference]: Without dead ends: 11 [2021-01-06 16:51:18,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 16:51:18,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-01-06 16:51:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-01-06 16:51:18,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-01-06 16:51:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-01-06 16:51:18,143 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2021-01-06 16:51:18,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:51:18,143 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-01-06 16:51:18,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 16:51:18,143 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-01-06 16:51:18,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 16:51:18,144 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:51:18,144 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:51:18,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:51:18,359 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:51:18,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:51:18,361 INFO L82 PathProgramCache]: Analyzing trace with hash 731324427, now seen corresponding path program 3 times [2021-01-06 16:51:18,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:51:18,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980482559] [2021-01-06 16:51:18,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:51:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:51:18,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-06 16:51:18,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980482559] [2021-01-06 16:51:18,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:51:18,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:51:18,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904965496] [2021-01-06 16:51:18,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:51:18,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:51:18,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:51:18,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:51:18,466 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2021-01-06 16:51:18,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:51:18,503 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-01-06 16:51:18,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:51:18,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-06 16:51:18,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:51:18,504 INFO L225 Difference]: With dead ends: 11 [2021-01-06 16:51:18,504 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 16:51:18,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:51:18,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 16:51:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 16:51:18,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 16:51:18,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 16:51:18,507 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-01-06 16:51:18,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:51:18,507 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 16:51:18,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:51:18,508 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 16:51:18,508 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 16:51:18,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 16:51:18,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 16:51:18,541 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 16:51:18,541 INFO L189 CegarLoopUtils]: For program point L25(lines 25 58) no Hoare annotation was computed. [2021-01-06 16:51:18,541 INFO L192 CegarLoopUtils]: At program point L54(lines 13 60) the Hoare annotation is: true [2021-01-06 16:51:18,542 INFO L189 CegarLoopUtils]: For program point L19(lines 19 59) no Hoare annotation was computed. [2021-01-06 16:51:18,542 INFO L189 CegarLoopUtils]: For program point L48(line 48) no Hoare annotation was computed. [2021-01-06 16:51:18,542 INFO L189 CegarLoopUtils]: For program point L46(lines 46 55) no Hoare annotation was computed. [2021-01-06 16:51:18,544 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 16:51:18,544 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 16:51:18,544 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 16:51:18,544 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2021-01-06 16:51:18,545 INFO L185 CegarLoopUtils]: At program point L37(lines 30 58) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~main__x~0 50) 0) (<= (+ ULTIMATE.start_main_~main__x~0 2) ULTIMATE.start_main_~main__y~0)) [2021-01-06 16:51:18,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:51:18 BoogieIcfgContainer [2021-01-06 16:51:18,567 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:51:18,568 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:51:18,568 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:51:18,568 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:51:18,569 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:51:16" (3/4) ... [2021-01-06 16:51:18,572 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 16:51:18,584 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-01-06 16:51:18,584 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 16:51:18,584 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 16:51:18,585 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 16:51:18,630 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c-witness.graphml [2021-01-06 16:51:18,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:51:18,632 INFO L168 Benchmark]: Toolchain (without parser) took 2774.52 ms. Allocated memory is still 167.8 MB. Free memory was 142.8 MB in the beginning and 79.3 MB in the end (delta: 63.5 MB). Peak memory consumption was 63.7 MB. Max. memory is 8.0 GB. [2021-01-06 16:51:18,633 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 167.8 MB. Free memory is still 141.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:51:18,634 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.08 ms. Allocated memory is still 167.8 MB. Free memory was 142.7 MB in the beginning and 133.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:51:18,634 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.56 ms. Allocated memory is still 167.8 MB. Free memory was 133.0 MB in the beginning and 131.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:51:18,635 INFO L168 Benchmark]: Boogie Preprocessor took 23.40 ms. Allocated memory is still 167.8 MB. Free memory was 131.6 MB in the beginning and 130.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:51:18,636 INFO L168 Benchmark]: RCFGBuilder took 382.13 ms. Allocated memory is still 167.8 MB. Free memory was 130.6 MB in the beginning and 119.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:51:18,637 INFO L168 Benchmark]: TraceAbstraction took 1963.03 ms. Allocated memory is still 167.8 MB. Free memory was 118.7 MB in the beginning and 81.4 MB in the end (delta: 37.3 MB). Peak memory consumption was 37.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:51:18,637 INFO L168 Benchmark]: Witness Printer took 62.56 ms. Allocated memory is still 167.8 MB. Free memory was 81.4 MB in the beginning and 79.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:51:18,641 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 167.8 MB. Free memory is still 141.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 292.08 ms. Allocated memory is still 167.8 MB. Free memory was 142.7 MB in the beginning and 133.0 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 40.56 ms. Allocated memory is still 167.8 MB. Free memory was 133.0 MB in the beginning and 131.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.40 ms. Allocated memory is still 167.8 MB. Free memory was 131.6 MB in the beginning and 130.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 382.13 ms. Allocated memory is still 167.8 MB. Free memory was 130.6 MB in the beginning and 119.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1963.03 ms. Allocated memory is still 167.8 MB. Free memory was 118.7 MB in the beginning and 81.4 MB in the end (delta: 37.3 MB). Peak memory consumption was 37.5 MB. Max. memory is 8.0 GB. * Witness Printer took 62.56 ms. Allocated memory is still 167.8 MB. Free memory was 81.4 MB in the beginning and 79.3 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: - PositiveResult [Line: 48]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: main__x + 50 <= 0 || main__x + 2 <= main__y - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 7 SDslu, 34 SDs, 0 SdLazy, 52 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 12 HoareAnnotationTreeSize, 2 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1129 SizeOfPredicates, 6 NumberOfNonLiveVariables, 123 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 6/14 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 correct! Received shutdown request...