/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-zilu/benchmark10_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:50:46,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:50:46,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:50:46,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:50:46,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:50:46,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:50:46,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:50:46,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:50:46,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:50:46,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:50:46,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:50:46,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:50:46,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:50:46,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:50:46,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:50:46,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:50:46,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:50:46,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:50:46,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:50:46,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:50:46,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:50:46,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:50:46,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:50:46,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:50:46,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 04:50:46,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:50:46,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:50:46,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:50:46,579 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:50:46,639 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:50:46,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:50:46,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:50:46,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:50:46,645 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:50:46,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:50:46,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:50:46,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:50:46,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:50:46,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:50:46,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:50:46,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:50:46,649 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:50:46,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:50:46,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:50:46,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:50:46,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:50:46,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:50:46,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:50:46,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:50:46,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:50:46,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:50:46,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:50:46,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:50:46,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:50:46,653 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:50:47,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:50:47,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:50:47,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:50:47,132 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:50:47,133 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:50:47,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark10_conjunctive.i [2020-12-22 04:50:47,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbee998cc/302567b8ba4b45fb8f082ba5d94f95f5/FLAG5719f5183 [2020-12-22 04:50:47,811 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:50:47,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark10_conjunctive.i [2020-12-22 04:50:47,819 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbee998cc/302567b8ba4b45fb8f082ba5d94f95f5/FLAG5719f5183 [2020-12-22 04:50:48,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbee998cc/302567b8ba4b45fb8f082ba5d94f95f5 [2020-12-22 04:50:48,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:50:48,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:50:48,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:50:48,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:50:48,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:50:48,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:50:48" (1/1) ... [2020-12-22 04:50:48,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eb6cb0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:48, skipping insertion in model container [2020-12-22 04:50:48,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:50:48" (1/1) ... [2020-12-22 04:50:48,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:50:48,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:50:48,367 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-zilu/benchmark10_conjunctive.i[873,886] [2020-12-22 04:50:48,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:50:48,405 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:50:48,423 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-zilu/benchmark10_conjunctive.i[873,886] [2020-12-22 04:50:48,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:50:48,452 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:50:48,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:48 WrapperNode [2020-12-22 04:50:48,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:50:48,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:50:48,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:50:48,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:50:48,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:48" (1/1) ... [2020-12-22 04:50:48,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:48" (1/1) ... [2020-12-22 04:50:48,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:50:48,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:50:48,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:50:48,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:50:48,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:48" (1/1) ... [2020-12-22 04:50:48,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:48" (1/1) ... [2020-12-22 04:50:48,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:48" (1/1) ... [2020-12-22 04:50:48,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:48" (1/1) ... [2020-12-22 04:50:48,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:48" (1/1) ... [2020-12-22 04:50:48,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:48" (1/1) ... [2020-12-22 04:50:48,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:48" (1/1) ... [2020-12-22 04:50:48,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:50:48,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:50:48,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:50:48,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:50:48,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:48" (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 04:50:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:50:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:50:48,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:50:48,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:50:49,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:50:49,037 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-22 04:50:49,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:50:49 BoogieIcfgContainer [2020-12-22 04:50:49,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:50:49,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:50:49,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:50:49,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:50:49,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:50:48" (1/3) ... [2020-12-22 04:50:49,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e717220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:50:49, skipping insertion in model container [2020-12-22 04:50:49,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:48" (2/3) ... [2020-12-22 04:50:49,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e717220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:50:49, skipping insertion in model container [2020-12-22 04:50:49,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:50:49" (3/3) ... [2020-12-22 04:50:49,051 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark10_conjunctive.i [2020-12-22 04:50:49,062 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:50:49,067 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 04:50:49,129 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 04:50:49,190 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:50:49,191 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:50:49,191 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:50:49,191 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:50:49,191 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:50:49,191 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:50:49,192 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:50:49,192 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:50:49,207 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-22 04:50:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 04:50:49,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:50:49,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:50:49,215 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:50:49,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:50:49,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1807243399, now seen corresponding path program 1 times [2020-12-22 04:50:49,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:50:49,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110399441] [2020-12-22 04:50:49,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:50:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:50:49,388 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 04:50:49,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110399441] [2020-12-22 04:50:49,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:50:49,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:50:49,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846789793] [2020-12-22 04:50:49,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:50:49,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:50:49,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:50:49,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:50:49,414 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-12-22 04:50:49,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:50:49,431 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2020-12-22 04:50:49,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:50:49,433 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-22 04:50:49,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:50:49,443 INFO L225 Difference]: With dead ends: 21 [2020-12-22 04:50:49,443 INFO L226 Difference]: Without dead ends: 9 [2020-12-22 04:50:49,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:50:49,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-22 04:50:49,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-22 04:50:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-22 04:50:49,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-12-22 04:50:49,520 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2020-12-22 04:50:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:50:49,521 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-12-22 04:50:49,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:50:49,521 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-12-22 04:50:49,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 04:50:49,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:50:49,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:50:49,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:50:49,522 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:50:49,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:50:49,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1806975280, now seen corresponding path program 1 times [2020-12-22 04:50:49,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:50:49,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300652411] [2020-12-22 04:50:49,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:50:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:50:49,619 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 04:50:49,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300652411] [2020-12-22 04:50:49,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:50:49,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 04:50:49,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841114375] [2020-12-22 04:50:49,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 04:50:49,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:50:49,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 04:50:49,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 04:50:49,624 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2020-12-22 04:50:49,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:50:49,641 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-12-22 04:50:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 04:50:49,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-22 04:50:49,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:50:49,643 INFO L225 Difference]: With dead ends: 18 [2020-12-22 04:50:49,643 INFO L226 Difference]: Without dead ends: 14 [2020-12-22 04:50:49,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 04:50:49,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-22 04:50:49,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2020-12-22 04:50:49,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-22 04:50:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-12-22 04:50:49,648 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2020-12-22 04:50:49,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:50:49,648 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-12-22 04:50:49,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 04:50:49,648 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-12-22 04:50:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 04:50:49,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:50:49,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:50:49,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 04:50:49,650 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:50:49,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:50:49,650 INFO L82 PathProgramCache]: Analyzing trace with hash 183324243, now seen corresponding path program 1 times [2020-12-22 04:50:49,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:50:49,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295893811] [2020-12-22 04:50:49,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:50:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:50:49,695 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 04:50:49,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295893811] [2020-12-22 04:50:49,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:50:49,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:50:49,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376819039] [2020-12-22 04:50:49,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:50:49,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:50:49,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:50:49,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:50:49,699 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2020-12-22 04:50:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:50:49,718 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-12-22 04:50:49,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:50:49,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 04:50:49,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:50:49,719 INFO L225 Difference]: With dead ends: 14 [2020-12-22 04:50:49,719 INFO L226 Difference]: Without dead ends: 10 [2020-12-22 04:50:49,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:50:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-22 04:50:49,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-22 04:50:49,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-22 04:50:49,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-12-22 04:50:49,724 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2020-12-22 04:50:49,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:50:49,725 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-12-22 04:50:49,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:50:49,725 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-12-22 04:50:49,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 04:50:49,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:50:49,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:50:49,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 04:50:49,726 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:50:49,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:50:49,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1389600693, now seen corresponding path program 1 times [2020-12-22 04:50:49,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:50:49,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182557] [2020-12-22 04:50:49,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:50:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:50:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:50:49,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182557] [2020-12-22 04:50:49,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178697155] [2020-12-22 04:50:49,779 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 04:50:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:50:49,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 04:50:49,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:50:49,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:50:49,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:50:49,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-12-22 04:50:49,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870077890] [2020-12-22 04:50:49,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:50:49,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:50:49,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:50:49,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:50:49,918 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2020-12-22 04:50:49,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:50:49,942 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-12-22 04:50:49,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:50:49,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 04:50:49,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:50:49,946 INFO L225 Difference]: With dead ends: 16 [2020-12-22 04:50:49,946 INFO L226 Difference]: Without dead ends: 12 [2020-12-22 04:50:49,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:50:49,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-22 04:50:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-22 04:50:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-22 04:50:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-12-22 04:50:49,955 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2020-12-22 04:50:49,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:50:49,955 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-12-22 04:50:49,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:50:49,956 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-12-22 04:50:49,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 04:50:49,957 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:50:49,957 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:50:50,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:50:50,173 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:50:50,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:50:50,174 INFO L82 PathProgramCache]: Analyzing trace with hash -275418886, now seen corresponding path program 2 times [2020-12-22 04:50:50,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:50:50,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243207887] [2020-12-22 04:50:50,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:50:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:50:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:50:50,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243207887] [2020-12-22 04:50:50,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356260739] [2020-12-22 04:50:50,337 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 04:50:50,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:50:50,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:50:50,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 04:50:50,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:50:50,498 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 04:50:50,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:50:50,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2020-12-22 04:50:50,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517726029] [2020-12-22 04:50:50,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 04:50:50,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:50:50,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 04:50:50,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:50:50,501 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 10 states. [2020-12-22 04:50:50,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:50:50,695 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-12-22 04:50:50,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 04:50:50,696 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-12-22 04:50:50,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:50:50,696 INFO L225 Difference]: With dead ends: 16 [2020-12-22 04:50:50,696 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 04:50:50,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-12-22 04:50:50,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 04:50:50,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 04:50:50,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 04:50:50,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 04:50:50,700 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-12-22 04:50:50,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:50:50,700 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 04:50:50,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 04:50:50,702 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 04:50:50,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 04:50:50,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:50:50,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 04:50:50,989 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 04:50:50,989 INFO L192 CegarLoopUtils]: At program point L29(lines 19 30) the Hoare annotation is: true [2020-12-22 04:50:50,990 INFO L185 CegarLoopUtils]: At program point L23-2(lines 23 27) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~i~0)) (.cse1 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~i~0))) (or (and (<= 1 ULTIMATE.start_main_~c~0) .cse0) (and (<= 1 .cse1) (<= ULTIMATE.start_main_~i~0 1) .cse0) (and (<= 0 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 0) (<= 0 .cse1)))) [2020-12-22 04:50:50,990 INFO L189 CegarLoopUtils]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2020-12-22 04:50:50,990 INFO L189 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-12-22 04:50:50,990 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 04:50:50,991 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 04:50:50,991 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 04:50:50,992 INFO L189 CegarLoopUtils]: For program point L26(line 26) no Hoare annotation was computed. [2020-12-22 04:50:50,992 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-12-22 04:50:50,992 INFO L189 CegarLoopUtils]: For program point L22(line 22) no Hoare annotation was computed. [2020-12-22 04:50:50,992 INFO L189 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2020-12-22 04:50:50,993 INFO L189 CegarLoopUtils]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-12-22 04:50:51,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:50:51 BoogieIcfgContainer [2020-12-22 04:50:51,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:50:51,014 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:50:51,014 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:50:51,014 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:50:51,015 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:50:49" (3/4) ... [2020-12-22 04:50:51,018 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 04:50:51,031 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-22 04:50:51,032 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 04:50:51,033 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:50:51,036 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:50:51,077 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-zilu/benchmark10_conjunctive.i-witness.graphml [2020-12-22 04:50:51,077 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:50:51,079 INFO L168 Benchmark]: Toolchain (without parser) took 2891.38 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 49.9 MB in the end (delta: 76.3 MB). Peak memory consumption was 76.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:51,080 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:50:51,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.37 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 116.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:51,082 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.18 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:51,082 INFO L168 Benchmark]: Boogie Preprocessor took 51.65 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 114.4 MB in the end (delta: 840.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:50:51,083 INFO L168 Benchmark]: RCFGBuilder took 483.86 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 103.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:51,084 INFO L168 Benchmark]: TraceAbstraction took 1971.78 ms. Allocated memory is still 151.0 MB. Free memory was 102.7 MB in the beginning and 52.5 MB in the end (delta: 50.2 MB). Peak memory consumption was 49.8 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:51,084 INFO L168 Benchmark]: Witness Printer took 63.68 ms. Allocated memory is still 151.0 MB. Free memory was 52.5 MB in the beginning and 49.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:51,088 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 265.37 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 116.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.18 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.65 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 114.4 MB in the end (delta: 840.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 483.86 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 103.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1971.78 ms. Allocated memory is still 151.0 MB. Free memory was 102.7 MB in the beginning and 52.5 MB in the end (delta: 50.2 MB). Peak memory consumption was 49.8 MB. Max. memory is 8.0 GB. * Witness Printer took 63.68 ms. Allocated memory is still 151.0 MB. Free memory was 52.5 MB in the beginning and 49.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((1 <= c && 1 <= i) || ((1 <= c + i && i <= 1) && 1 <= i)) || ((0 <= i && i <= 0) && 0 <= c + i) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 23 SDslu, 19 SDs, 0 SdLazy, 54 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 33 HoareAnnotationTreeSize, 2 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 875 SizeOfPredicates, 0 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 2/10 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...