/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-invgen/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:53:28,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:53:28,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:53:28,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:53:28,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:53:28,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:53:28,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:53:28,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:53:28,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:53:28,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:53:28,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:53:28,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:53:28,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:53:28,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:53:28,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:53:28,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:53:28,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:53:28,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:53:28,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:53:28,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:53:28,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:53:28,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:53:28,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:53:28,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:53:28,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 06:53:28,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:53:28,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:53:28,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:53:28,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:53:28,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:53:28,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:53:28,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:53:28,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:53:28,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:53:28,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:53:28,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:53:28,863 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 06:53:28,891 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:53:28,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:53:28,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:53:28,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:53:28,893 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:53:28,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:53:28,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:53:28,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:53:28,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:53:28,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:53:28,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:53:28,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:53:28,895 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:53:28,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:53:28,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:53:28,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:53:28,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:53:28,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:53:28,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:53:28,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:53:28,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:53:28,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:53:28,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:53:28,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:53:28,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:53:28,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:53:29,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:53:29,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:53:29,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:53:29,272 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:53:29,273 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:53:29,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2020-12-23 06:53:29,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/24803a7a3/61cb831e642b4a81820f1dc2eae84850/FLAG784435bd3 [2020-12-23 06:53:29,922 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:53:29,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2020-12-23 06:53:29,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/24803a7a3/61cb831e642b4a81820f1dc2eae84850/FLAG784435bd3 [2020-12-23 06:53:30,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/24803a7a3/61cb831e642b4a81820f1dc2eae84850 [2020-12-23 06:53:30,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:53:30,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:53:30,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:53:30,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:53:30,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:53:30,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:53:30" (1/1) ... [2020-12-23 06:53:30,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4803046a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:53:30, skipping insertion in model container [2020-12-23 06:53:30,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:53:30" (1/1) ... [2020-12-23 06:53:30,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:53:30,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 06:53:30,502 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-invgen/NetBSD_loop.i[893,906] left hand side expression in assignment: lhs: VariableLHS[~MAXPATHLEN~0,] left hand side expression in assignment: lhs: VariableLHS[~pathbuf_off~0,] left hand side expression in assignment: lhs: VariableLHS[~bound_off~0,] left hand side expression in assignment: lhs: VariableLHS[~glob2_pathbuf_off~0,] left hand side expression in assignment: lhs: VariableLHS[~glob2_pathlim_off~0,] left hand side expression in assignment: lhs: VariableLHS[~glob2_p_off~0,] [2020-12-23 06:53:30,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:53:30,528 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 06:53:30,542 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-invgen/NetBSD_loop.i[893,906] left hand side expression in assignment: lhs: VariableLHS[~MAXPATHLEN~0,] left hand side expression in assignment: lhs: VariableLHS[~pathbuf_off~0,] left hand side expression in assignment: lhs: VariableLHS[~bound_off~0,] left hand side expression in assignment: lhs: VariableLHS[~glob2_pathbuf_off~0,] left hand side expression in assignment: lhs: VariableLHS[~glob2_pathlim_off~0,] left hand side expression in assignment: lhs: VariableLHS[~glob2_p_off~0,] [2020-12-23 06:53:30,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:53:30,564 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:53:30,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:53:30 WrapperNode [2020-12-23 06:53:30,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:53:30,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:53:30,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:53:30,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:53:30,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:53:30" (1/1) ... [2020-12-23 06:53:30,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:53:30" (1/1) ... [2020-12-23 06:53:30,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:53:30,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:53:30,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:53:30,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:53:30,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:53:30" (1/1) ... [2020-12-23 06:53:30,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:53:30" (1/1) ... [2020-12-23 06:53:30,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:53:30" (1/1) ... [2020-12-23 06:53:30,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:53:30" (1/1) ... [2020-12-23 06:53:30,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:53:30" (1/1) ... [2020-12-23 06:53:30,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:53:30" (1/1) ... [2020-12-23 06:53:30,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:53:30" (1/1) ... [2020-12-23 06:53:30,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:53:30,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:53:30,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:53:30,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:53:30,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:53:30" (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 06:53:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:53:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:53:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:53:30,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:53:30,930 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:53:30,930 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-23 06:53:30,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:53:30 BoogieIcfgContainer [2020-12-23 06:53:30,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:53:30,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:53:30,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:53:30,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:53:30,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:53:30" (1/3) ... [2020-12-23 06:53:30,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d0f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:53:30, skipping insertion in model container [2020-12-23 06:53:30,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:53:30" (2/3) ... [2020-12-23 06:53:30,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d0f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:53:30, skipping insertion in model container [2020-12-23 06:53:30,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:53:30" (3/3) ... [2020-12-23 06:53:30,948 INFO L111 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2020-12-23 06:53:30,957 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:53:30,962 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 06:53:30,989 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 06:53:31,029 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:53:31,030 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:53:31,041 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:53:31,041 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:53:31,041 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:53:31,041 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:53:31,041 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:53:31,042 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:53:31,064 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-12-23 06:53:31,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 06:53:31,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:53:31,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:53:31,088 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:53:31,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:53:31,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1804971340, now seen corresponding path program 1 times [2020-12-23 06:53:31,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:53:31,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403464770] [2020-12-23 06:53:31,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:53:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:53:31,360 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 06:53:31,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403464770] [2020-12-23 06:53:31,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:53:31,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:53:31,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104637410] [2020-12-23 06:53:31,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:53:31,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:53:31,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:53:31,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:53:31,393 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2020-12-23 06:53:31,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:53:31,489 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2020-12-23 06:53:31,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:53:31,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 06:53:31,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:53:31,500 INFO L225 Difference]: With dead ends: 37 [2020-12-23 06:53:31,501 INFO L226 Difference]: Without dead ends: 12 [2020-12-23 06:53:31,504 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 [2020-12-23 06:53:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-23 06:53:31,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-12-23 06:53:31,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-23 06:53:31,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-12-23 06:53:31,541 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2020-12-23 06:53:31,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:53:31,542 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-12-23 06:53:31,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:53:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-12-23 06:53:31,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 06:53:31,543 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:53:31,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:53:31,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:53:31,544 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:53:31,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:53:31,545 INFO L82 PathProgramCache]: Analyzing trace with hash -589174129, now seen corresponding path program 1 times [2020-12-23 06:53:31,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:53:31,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020778408] [2020-12-23 06:53:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:53:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:53:31,607 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 06:53:31,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020778408] [2020-12-23 06:53:31,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:53:31,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 06:53:31,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945331660] [2020-12-23 06:53:31,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 06:53:31,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:53:31,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 06:53:31,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:53:31,612 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 5 states. [2020-12-23 06:53:31,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:53:31,670 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-12-23 06:53:31,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 06:53:31,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-23 06:53:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:53:31,672 INFO L225 Difference]: With dead ends: 18 [2020-12-23 06:53:31,672 INFO L226 Difference]: Without dead ends: 16 [2020-12-23 06:53:31,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 06:53:31,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-23 06:53:31,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-12-23 06:53:31,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-23 06:53:31,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-23 06:53:31,679 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2020-12-23 06:53:31,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:53:31,679 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-23 06:53:31,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 06:53:31,680 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-23 06:53:31,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 06:53:31,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:53:31,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:53:31,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:53:31,681 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:53:31,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:53:31,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1597097285, now seen corresponding path program 1 times [2020-12-23 06:53:31,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:53:31,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638080509] [2020-12-23 06:53:31,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:53:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:53:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:53:31,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638080509] [2020-12-23 06:53:31,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701789580] [2020-12-23 06:53:31,762 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 06:53:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:53:31,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 06:53:31,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:53:32,025 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:53:32,041 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:53:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:53:32,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:53:32,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-23 06:53:32,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915779374] [2020-12-23 06:53:32,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 06:53:32,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:53:32,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 06:53:32,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-23 06:53:32,081 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 9 states. [2020-12-23 06:53:32,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:53:32,270 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-12-23 06:53:32,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 06:53:32,271 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-12-23 06:53:32,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:53:32,272 INFO L225 Difference]: With dead ends: 24 [2020-12-23 06:53:32,273 INFO L226 Difference]: Without dead ends: 22 [2020-12-23 06:53:32,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-23 06:53:32,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-23 06:53:32,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-12-23 06:53:32,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 06:53:32,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-12-23 06:53:32,286 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 14 [2020-12-23 06:53:32,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:53:32,288 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-12-23 06:53:32,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 06:53:32,288 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-12-23 06:53:32,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 06:53:32,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:53:32,289 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 06:53:32,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 06:53:32,506 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:53:32,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:53:32,508 INFO L82 PathProgramCache]: Analyzing trace with hash 759966799, now seen corresponding path program 2 times [2020-12-23 06:53:32,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:53:32,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233556694] [2020-12-23 06:53:32,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:53:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:53:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 06:53:32,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233556694] [2020-12-23 06:53:32,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872170980] [2020-12-23 06:53:32,582 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 [2020-12-23 06:53:32,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 06:53:32,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:53:32,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 06:53:32,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:53:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 06:53:32,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:53:32,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-23 06:53:32,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834443029] [2020-12-23 06:53:32,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 06:53:32,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:53:32,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 06:53:32,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 06:53:32,688 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 6 states. [2020-12-23 06:53:32,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:53:32,764 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-12-23 06:53:32,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 06:53:32,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-23 06:53:32,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:53:32,765 INFO L225 Difference]: With dead ends: 20 [2020-12-23 06:53:32,765 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 06:53:32,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-23 06:53:32,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 06:53:32,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 06:53:32,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 06:53:32,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 06:53:32,767 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-12-23 06:53:32,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:53:32,767 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 06:53:32,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 06:53:32,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 06:53:32,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 06:53:32,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:53:32,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 06:53:33,140 INFO L189 CegarLoopUtils]: For program point L33(line 33) no Hoare annotation was computed. [2020-12-23 06:53:33,140 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 06:53:33,140 INFO L189 CegarLoopUtils]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-12-23 06:53:33,140 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-23 06:53:33,140 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-23 06:53:33,141 INFO L189 CegarLoopUtils]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-12-23 06:53:33,141 INFO L192 CegarLoopUtils]: At program point L44(lines 25 45) the Hoare annotation is: true [2020-12-23 06:53:33,141 INFO L192 CegarLoopUtils]: At program point L44-1(lines 24 45) the Hoare annotation is: true [2020-12-23 06:53:33,141 INFO L185 CegarLoopUtils]: At program point L38-2(lines 38 43) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~glob2_p_off~0)) (.cse1 (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0)) (.cse2 (<= 1 ULTIMATE.start_main_~MAXPATHLEN~0))) (or (and .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2) (and (<= ULTIMATE.start_main_~glob2_p_off~0 0) .cse0 .cse1 .cse2))) [2020-12-23 06:53:33,142 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 06:53:33,142 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 06:53:33,142 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 06:53:33,142 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-23 06:53:33,142 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-12-23 06:53:33,143 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~glob2_p_off~0) (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= ULTIMATE.start_main_~glob2_p_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= 1 ULTIMATE.start_main_~MAXPATHLEN~0)) [2020-12-23 06:53:33,143 INFO L189 CegarLoopUtils]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-12-23 06:53:33,143 INFO L185 CegarLoopUtils]: At program point L18-5(lines 1 45) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~glob2_p_off~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= ULTIMATE.start_main_~glob2_p_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= 1 ULTIMATE.start_main_~MAXPATHLEN~0)) [2020-12-23 06:53:33,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:53:33 BoogieIcfgContainer [2020-12-23 06:53:33,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:53:33,164 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:53:33,164 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:53:33,165 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:53:33,165 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:53:30" (3/4) ... [2020-12-23 06:53:33,169 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 06:53:33,181 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-23 06:53:33,181 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 06:53:33,181 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 06:53:33,182 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 06:53:33,229 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-invgen/NetBSD_loop.i-witness.graphml [2020-12-23 06:53:33,230 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:53:33,232 INFO L168 Benchmark]: Toolchain (without parser) took 2912.05 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 137.0 MB in the beginning and 155.6 MB in the end (delta: -18.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-23 06:53:33,233 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 162.5 MB. Free memory is still 137.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:53:33,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.39 ms. Allocated memory is still 162.5 MB. Free memory was 137.0 MB in the beginning and 127.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 06:53:33,234 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.56 ms. Allocated memory is still 162.5 MB. Free memory was 127.1 MB in the beginning and 125.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:53:33,235 INFO L168 Benchmark]: Boogie Preprocessor took 22.92 ms. Allocated memory is still 162.5 MB. Free memory was 125.8 MB in the beginning and 124.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:53:33,236 INFO L168 Benchmark]: RCFGBuilder took 305.77 ms. Allocated memory is still 162.5 MB. Free memory was 124.7 MB in the beginning and 113.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:53:33,236 INFO L168 Benchmark]: TraceAbstraction took 2229.42 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 112.7 MB in the beginning and 158.2 MB in the end (delta: -45.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:53:33,237 INFO L168 Benchmark]: Witness Printer took 65.46 ms. Allocated memory is still 195.0 MB. Free memory was 158.2 MB in the beginning and 155.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:53:33,241 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 162.5 MB. Free memory is still 137.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 242.39 ms. Allocated memory is still 162.5 MB. Free memory was 137.0 MB in the beginning and 127.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 36.56 ms. Allocated memory is still 162.5 MB. Free memory was 127.1 MB in the beginning and 125.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.92 ms. Allocated memory is still 162.5 MB. Free memory was 125.8 MB in the beginning and 124.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 305.77 ms. Allocated memory is still 162.5 MB. Free memory was 124.7 MB in the beginning and 113.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2229.42 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 112.7 MB in the beginning and 158.2 MB in the end (delta: -45.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 65.46 ms. Allocated memory is still 195.0 MB. Free memory was 158.2 MB in the beginning and 155.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((!(0 == cond) && 0 <= glob2_p_off) && glob2_pathlim_off <= MAXPATHLEN) && glob2_p_off <= MAXPATHLEN) && 1 <= MAXPATHLEN - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((0 <= glob2_p_off && 1 <= cond) && glob2_pathlim_off <= MAXPATHLEN) && glob2_p_off <= MAXPATHLEN) && 1 <= MAXPATHLEN - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((0 <= glob2_p_off && 1 <= cond) && glob2_pathlim_off <= MAXPATHLEN) && 1 <= MAXPATHLEN) || (((glob2_p_off <= 0 && 0 <= glob2_p_off) && glob2_pathlim_off <= MAXPATHLEN) && 1 <= MAXPATHLEN) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 50 SDslu, 56 SDs, 0 SdLazy, 75 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 19 NumberOfFragments, 62 HoareAnnotationTreeSize, 5 FomulaSimplifications, 228 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 13 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 82 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 3357 SizeOfPredicates, 11 NumberOfNonLiveVariables, 121 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 14/34 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...