/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-dev-4f750a8 [2020-12-22 04:28:32,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:28:32,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:28:32,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:28:32,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:28:32,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:28:32,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:28:32,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:28:32,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:28:32,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:28:32,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:28:32,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:28:32,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:28:32,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:28:32,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:28:32,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:28:32,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:28:32,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:28:32,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:28:32,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:28:32,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:28:32,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:28:32,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:28:32,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:28:32,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 04:28:32,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:28:32,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:28:32,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:28:32,667 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:28:32,719 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:28:32,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:28:32,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:28:32,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:28:32,726 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:28:32,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:28:32,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:28:32,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:28:32,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:28:32,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:28:32,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:28:32,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:28:32,729 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:28:32,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:28:32,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:28:32,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:28:32,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:28:32,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:28:32,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:28:32,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:28:32,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:28:32,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:28:32,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:28:32,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:28:32,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:28:32,731 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:28:33,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:28:33,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:28:33,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:28:33,177 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:28:33,178 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:28:33,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2020-12-22 04:28:33,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e3fc9f72/99ee361445714ffa8f3c6a91d12f20af/FLAGb0fea2cab [2020-12-22 04:28:33,950 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:28:33,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2020-12-22 04:28:33,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e3fc9f72/99ee361445714ffa8f3c6a91d12f20af/FLAGb0fea2cab [2020-12-22 04:28:34,286 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e3fc9f72/99ee361445714ffa8f3c6a91d12f20af [2020-12-22 04:28:34,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:28:34,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:28:34,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:28:34,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:28:34,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:28:34,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:28:34" (1/1) ... [2020-12-22 04:28:34,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6932e415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:34, skipping insertion in model container [2020-12-22 04:28:34,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:28:34" (1/1) ... [2020-12-22 04:28:34,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:28:34,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:28:34,479 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/NetBSD_loop.i[893,906] [2020-12-22 04:28:34,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:28:34,503 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:28:34,519 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/NetBSD_loop.i[893,906] [2020-12-22 04:28:34,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:28:34,541 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:28:34,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:34 WrapperNode [2020-12-22 04:28:34,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:28:34,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:28:34,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:28:34,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:28:34,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:34" (1/1) ... [2020-12-22 04:28:34,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:34" (1/1) ... [2020-12-22 04:28:34,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:28:34,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:28:34,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:28:34,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:28:34,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:34" (1/1) ... [2020-12-22 04:28:34,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:34" (1/1) ... [2020-12-22 04:28:34,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:34" (1/1) ... [2020-12-22 04:28:34,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:34" (1/1) ... [2020-12-22 04:28:34,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:34" (1/1) ... [2020-12-22 04:28:34,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:34" (1/1) ... [2020-12-22 04:28:34,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:34" (1/1) ... [2020-12-22 04:28:34,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:28:34,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:28:34,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:28:34,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:28:34,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 04:28:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:28:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:28:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:28:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:28:34,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:28:34,997 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 04:28:34,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:28:34 BoogieIcfgContainer [2020-12-22 04:28:34,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:28:35,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:28:35,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:28:35,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:28:35,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:28:34" (1/3) ... [2020-12-22 04:28:35,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334d5a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:28:35, skipping insertion in model container [2020-12-22 04:28:35,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:34" (2/3) ... [2020-12-22 04:28:35,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334d5a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:28:35, skipping insertion in model container [2020-12-22 04:28:35,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:28:34" (3/3) ... [2020-12-22 04:28:35,009 INFO L111 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2020-12-22 04:28:35,019 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:28:35,025 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 04:28:35,050 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 04:28:35,090 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:28:35,090 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:28:35,090 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:28:35,090 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:28:35,091 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:28:35,091 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:28:35,091 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:28:35,091 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:28:35,124 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-12-22 04:28:35,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 04:28:35,138 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:35,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:35,140 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:35,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:35,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1804971340, now seen corresponding path program 1 times [2020-12-22 04:28:35,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:35,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540888272] [2020-12-22 04:28:35,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:35,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540888272] [2020-12-22 04:28:35,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:35,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:28:35,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687083622] [2020-12-22 04:28:35,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:28:35,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:35,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:28:35,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:28:35,557 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2020-12-22 04:28:35,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:35,705 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2020-12-22 04:28:35,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:28:35,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 04:28:35,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:35,718 INFO L225 Difference]: With dead ends: 37 [2020-12-22 04:28:35,718 INFO L226 Difference]: Without dead ends: 12 [2020-12-22 04:28:35,721 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 [2020-12-22 04:28:35,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-22 04:28:35,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-12-22 04:28:35,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-22 04:28:35,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-12-22 04:28:35,758 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2020-12-22 04:28:35,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:35,758 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-12-22 04:28:35,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:28:35,759 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-12-22 04:28:35,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 04:28:35,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:35,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:35,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:28:35,760 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:35,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:35,761 INFO L82 PathProgramCache]: Analyzing trace with hash -589174129, now seen corresponding path program 1 times [2020-12-22 04:28:35,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:35,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833642436] [2020-12-22 04:28:35,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:35,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833642436] [2020-12-22 04:28:35,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:35,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:28:35,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657845096] [2020-12-22 04:28:35,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:28:35,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:35,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:28:35,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:28:35,891 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 5 states. [2020-12-22 04:28:35,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:36,000 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-12-22 04:28:36,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:28:36,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-22 04:28:36,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:36,001 INFO L225 Difference]: With dead ends: 18 [2020-12-22 04:28:36,001 INFO L226 Difference]: Without dead ends: 16 [2020-12-22 04:28:36,003 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 [2020-12-22 04:28:36,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-22 04:28:36,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-12-22 04:28:36,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-22 04:28:36,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-22 04:28:36,009 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2020-12-22 04:28:36,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:36,009 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-22 04:28:36,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:28:36,010 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-22 04:28:36,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 04:28:36,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:36,010 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:36,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 04:28:36,011 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:36,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:36,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1597097285, now seen corresponding path program 1 times [2020-12-22 04:28:36,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:36,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372300221] [2020-12-22 04:28:36,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:36,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372300221] [2020-12-22 04:28:36,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921214338] [2020-12-22 04:28:36,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 04:28:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:36,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 04:28:36,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:28:36,406 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:28:36,427 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:28:36,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:36,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:28:36,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-22 04:28:36,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568482329] [2020-12-22 04:28:36,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 04:28:36,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:36,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 04:28:36,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:28:36,462 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 9 states. [2020-12-22 04:28:36,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:36,725 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-12-22 04:28:36,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 04:28:36,726 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-12-22 04:28:36,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:36,727 INFO L225 Difference]: With dead ends: 24 [2020-12-22 04:28:36,727 INFO L226 Difference]: Without dead ends: 22 [2020-12-22 04:28:36,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 04:28:36,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-22 04:28:36,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-12-22 04:28:36,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 04:28:36,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-12-22 04:28:36,735 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 14 [2020-12-22 04:28:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:36,736 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-12-22 04:28:36,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 04:28:36,736 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-12-22 04:28:36,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 04:28:36,737 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:36,737 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:36,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 04:28:36,951 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:36,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:36,953 INFO L82 PathProgramCache]: Analyzing trace with hash 759966799, now seen corresponding path program 2 times [2020-12-22 04:28:36,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:36,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291779807] [2020-12-22 04:28:36,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 04:28:37,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291779807] [2020-12-22 04:28:37,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174593217] [2020-12-22 04:28:37,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 04:28:37,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 04:28:37,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:28:37,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 04:28:37,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:28:37,191 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 04:28:37,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:28:37,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 04:28:37,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247023758] [2020-12-22 04:28:37,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:28:37,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:37,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:28:37,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:28:37,196 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 6 states. [2020-12-22 04:28:37,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:37,315 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-12-22 04:28:37,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:28:37,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-22 04:28:37,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:37,316 INFO L225 Difference]: With dead ends: 20 [2020-12-22 04:28:37,316 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 04:28:37,317 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 [2020-12-22 04:28:37,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 04:28:37,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 04:28:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 04:28:37,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 04:28:37,318 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-12-22 04:28:37,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:37,319 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 04:28:37,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:28:37,319 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 04:28:37,319 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 04:28:37,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:28:37,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 04:28:37,770 INFO L189 CegarLoopUtils]: For program point L33(line 33) no Hoare annotation was computed. [2020-12-22 04:28:37,770 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 04:28:37,771 INFO L189 CegarLoopUtils]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-12-22 04:28:37,771 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-22 04:28:37,771 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-22 04:28:37,771 INFO L189 CegarLoopUtils]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-12-22 04:28:37,771 INFO L192 CegarLoopUtils]: At program point L44(lines 25 45) the Hoare annotation is: true [2020-12-22 04:28:37,772 INFO L192 CegarLoopUtils]: At program point L44-1(lines 24 45) the Hoare annotation is: true [2020-12-22 04:28:37,772 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))) [2020-12-22 04:28:37,772 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 04:28:37,772 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 04:28:37,772 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 04:28:37,773 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-22 04:28:37,773 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-12-22 04:28:37,773 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)) [2020-12-22 04:28:37,773 INFO L189 CegarLoopUtils]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-12-22 04:28:37,773 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)) [2020-12-22 04:28:37,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:28:37 BoogieIcfgContainer [2020-12-22 04:28:37,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:28:37,796 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:28:37,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:28:37,796 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:28:37,797 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:28:34" (3/4) ... [2020-12-22 04:28:37,801 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 04:28:37,812 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-22 04:28:37,813 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 04:28:37,813 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:28:37,813 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:28:37,861 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-invgen/NetBSD_loop.i-witness.graphml [2020-12-22 04:28:37,861 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:28:37,863 INFO L168 Benchmark]: Toolchain (without parser) took 3570.56 ms. Allocated memory was 161.5 MB in the beginning and 198.2 MB in the end (delta: 36.7 MB). Free memory was 135.9 MB in the beginning and 158.8 MB in the end (delta: -22.9 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. [2020-12-22 04:28:37,864 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 161.5 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:28:37,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.88 ms. Allocated memory is still 161.5 MB. Free memory was 135.7 MB in the beginning and 126.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:28:37,865 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.41 ms. Allocated memory is still 161.5 MB. Free memory was 126.0 MB in the beginning and 124.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:28:37,866 INFO L168 Benchmark]: Boogie Preprocessor took 24.03 ms. Allocated memory is still 161.5 MB. Free memory was 124.6 MB in the beginning and 123.7 MB in the end (delta: 945.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:28:37,867 INFO L168 Benchmark]: RCFGBuilder took 390.18 ms. Allocated memory is still 161.5 MB. Free memory was 123.6 MB in the beginning and 111.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 04:28:37,868 INFO L168 Benchmark]: TraceAbstraction took 2794.09 ms. Allocated memory was 161.5 MB in the beginning and 198.2 MB in the end (delta: 36.7 MB). Free memory was 111.4 MB in the beginning and 161.4 MB in the end (delta: -49.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:28:37,869 INFO L168 Benchmark]: Witness Printer took 65.42 ms. Allocated memory is still 198.2 MB. Free memory was 161.4 MB in the beginning and 158.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:28:37,873 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 161.5 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 248.88 ms. Allocated memory is still 161.5 MB. Free memory was 135.7 MB in the beginning and 126.0 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 40.41 ms. Allocated memory is still 161.5 MB. Free memory was 126.0 MB in the beginning and 124.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.03 ms. Allocated memory is still 161.5 MB. Free memory was 124.6 MB in the beginning and 123.7 MB in the end (delta: 945.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 390.18 ms. Allocated memory is still 161.5 MB. Free memory was 123.6 MB in the beginning and 111.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2794.09 ms. Allocated memory was 161.5 MB in the beginning and 198.2 MB in the end (delta: 36.7 MB). Free memory was 111.4 MB in the beginning and 161.4 MB in the end (delta: -49.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 65.42 ms. Allocated memory is still 198.2 MB. Free memory was 161.4 MB in the beginning and 158.8 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: 2.4s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 50 SDslu, 56 SDs, 0 SdLazy, 75 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s 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, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s 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...