/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/loop-lit/ddlm2013.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:50:52,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:50:52,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:50:52,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:50:52,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:50:52,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:50:52,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:50:52,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:50:52,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:50:52,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:50:52,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:50:52,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:50:52,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:50:52,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:50:52,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:50:52,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:50:52,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:50:52,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:50:52,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:50:52,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:50:52,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:50:52,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:50:52,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:50:52,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:50:52,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:50:52,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:50:52,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:50:52,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:50:52,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:50:52,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:50:52,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:50:52,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:50:52,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:50:52,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:50:52,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:50:52,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:50:52,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 16:50:52,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:50:52,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:50:52,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:50:52,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:50:52,556 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:50:52,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:50:52,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:50:52,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:50:52,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:50:52,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:50:52,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:50:52,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:50:52,558 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:50:52,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:50:52,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:50:52,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:50:52,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:50:52,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:50:52,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:50:52,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:50:52,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:50:52,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:50:52,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:50:52,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:50:52,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:50:52,561 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:50:52,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:50:52,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:50:52,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:50:52,980 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:50:52,981 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:50:52,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/ddlm2013.i [2021-01-06 16:50:53,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d92c49fac/c3cfb1491337494898ac891de1d00dda/FLAGfb8c81720 [2021-01-06 16:50:53,698 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:50:53,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-lit/ddlm2013.i [2021-01-06 16:50:53,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d92c49fac/c3cfb1491337494898ac891de1d00dda/FLAGfb8c81720 [2021-01-06 16:50:54,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d92c49fac/c3cfb1491337494898ac891de1d00dda [2021-01-06 16:50:54,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:50:54,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:50:54,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:50:54,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:50:54,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:50:54,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:50:54" (1/1) ... [2021-01-06 16:50:54,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6390f5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:54, skipping insertion in model container [2021-01-06 16:50:54,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:50:54" (1/1) ... [2021-01-06 16:50:54,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:50:54,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 16:50:54,239 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-lit/ddlm2013.i[895,908] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-06 16:50:54,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:50:54,263 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 16:50:54,277 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-lit/ddlm2013.i[895,908] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-06 16:50:54,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:50:54,298 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:50:54,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:54 WrapperNode [2021-01-06 16:50:54,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:50:54,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:50:54,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:50:54,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:50:54,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:54" (1/1) ... [2021-01-06 16:50:54,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:54" (1/1) ... [2021-01-06 16:50:54,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:50:54,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:50:54,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:50:54,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:50:54,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:54" (1/1) ... [2021-01-06 16:50:54,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:54" (1/1) ... [2021-01-06 16:50:54,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:54" (1/1) ... [2021-01-06 16:50:54,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:54" (1/1) ... [2021-01-06 16:50:54,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:54" (1/1) ... [2021-01-06 16:50:54,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:54" (1/1) ... [2021-01-06 16:50:54,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:54" (1/1) ... [2021-01-06 16:50:54,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:50:54,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:50:54,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:50:54,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:50:54,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:50:54,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:50:54,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:50:54,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:50:54,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:50:54,680 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:50:54,680 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-01-06 16:50:54,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:50:54 BoogieIcfgContainer [2021-01-06 16:50:54,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:50:54,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:50:54,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:50:54,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:50:54,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:50:54" (1/3) ... [2021-01-06 16:50:54,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd4622c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:50:54, skipping insertion in model container [2021-01-06 16:50:54,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:54" (2/3) ... [2021-01-06 16:50:54,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd4622c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:50:54, skipping insertion in model container [2021-01-06 16:50:54,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:50:54" (3/3) ... [2021-01-06 16:50:54,692 INFO L111 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2021-01-06 16:50:54,699 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:50:54,704 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:50:54,741 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:50:54,794 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:50:54,794 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:50:54,795 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:50:54,795 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:50:54,795 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:50:54,795 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:50:54,796 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:50:54,796 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:50:54,812 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2021-01-06 16:50:54,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 16:50:54,819 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:54,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:54,820 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:54,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:54,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1805459912, now seen corresponding path program 1 times [2021-01-06 16:50:54,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:54,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674592991] [2021-01-06 16:50:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:55,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:55,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674592991] [2021-01-06 16:50:55,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:50:55,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:50:55,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481672154] [2021-01-06 16:50:55,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:50:55,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:55,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:50:55,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:50:55,078 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2021-01-06 16:50:55,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:55,094 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2021-01-06 16:50:55,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:50:55,095 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-06 16:50:55,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:55,105 INFO L225 Difference]: With dead ends: 22 [2021-01-06 16:50:55,106 INFO L226 Difference]: Without dead ends: 10 [2021-01-06 16:50:55,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:50:55,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-01-06 16:50:55,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-01-06 16:50:55,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-01-06 16:50:55,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-01-06 16:50:55,148 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2021-01-06 16:50:55,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:55,151 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-01-06 16:50:55,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:50:55,151 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-01-06 16:50:55,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 16:50:55,152 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:55,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:55,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:50:55,154 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:55,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:55,159 INFO L82 PathProgramCache]: Analyzing trace with hash 122256666, now seen corresponding path program 1 times [2021-01-06 16:50:55,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:55,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836630973] [2021-01-06 16:50:55,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:55,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836630973] [2021-01-06 16:50:55,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:50:55,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:50:55,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713911753] [2021-01-06 16:50:55,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:50:55,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:55,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:50:55,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:50:55,309 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 4 states. [2021-01-06 16:50:55,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:55,350 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-01-06 16:50:55,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:50:55,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-06 16:50:55,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:55,352 INFO L225 Difference]: With dead ends: 16 [2021-01-06 16:50:55,352 INFO L226 Difference]: Without dead ends: 12 [2021-01-06 16:50:55,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:50:55,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-01-06 16:50:55,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-01-06 16:50:55,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-01-06 16:50:55,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-01-06 16:50:55,357 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2021-01-06 16:50:55,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:55,357 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-01-06 16:50:55,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:50:55,357 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-01-06 16:50:55,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 16:50:55,358 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:55,358 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:55,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:50:55,359 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:55,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:55,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1514407247, now seen corresponding path program 1 times [2021-01-06 16:50:55,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:55,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73113290] [2021-01-06 16:50:55,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:55,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73113290] [2021-01-06 16:50:55,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587657535] [2021-01-06 16:50:55,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:55,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 16:50:55,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:50:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:55,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:50:55,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-01-06 16:50:55,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451196792] [2021-01-06 16:50:55,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 16:50:55,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:55,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 16:50:55,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-01-06 16:50:55,872 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 9 states. [2021-01-06 16:50:55,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:55,961 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-01-06 16:50:55,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 16:50:55,962 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2021-01-06 16:50:55,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:55,963 INFO L225 Difference]: With dead ends: 21 [2021-01-06 16:50:55,963 INFO L226 Difference]: Without dead ends: 17 [2021-01-06 16:50:55,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-01-06 16:50:55,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-01-06 16:50:55,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-01-06 16:50:55,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-01-06 16:50:55,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-01-06 16:50:55,968 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 11 [2021-01-06 16:50:55,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:55,969 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-01-06 16:50:55,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 16:50:55,969 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-01-06 16:50:55,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 16:50:55,970 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:55,970 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:56,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-06 16:50:56,184 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:56,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:56,186 INFO L82 PathProgramCache]: Analyzing trace with hash -2100501679, now seen corresponding path program 1 times [2021-01-06 16:50:56,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:56,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101878738] [2021-01-06 16:50:56,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:56,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 16:50:56,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101878738] [2021-01-06 16:50:56,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:50:56,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:50:56,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657336651] [2021-01-06 16:50:56,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:50:56,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:56,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:50:56,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:50:56,233 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand 3 states. [2021-01-06 16:50:56,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:56,243 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-01-06 16:50:56,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:50:56,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2021-01-06 16:50:56,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:56,248 INFO L225 Difference]: With dead ends: 24 [2021-01-06 16:50:56,248 INFO L226 Difference]: Without dead ends: 15 [2021-01-06 16:50:56,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:50:56,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-01-06 16:50:56,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-01-06 16:50:56,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-01-06 16:50:56,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-01-06 16:50:56,255 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2021-01-06 16:50:56,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:56,255 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-01-06 16:50:56,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:50:56,256 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-01-06 16:50:56,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:50:56,256 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:56,257 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:56,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 16:50:56,257 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:56,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:56,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1426811654, now seen corresponding path program 2 times [2021-01-06 16:50:56,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:56,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469392530] [2021-01-06 16:50:56,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:56,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469392530] [2021-01-06 16:50:56,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299461410] [2021-01-06 16:50:56,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:56,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:50:56,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:50:56,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-06 16:50:56,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:50:56,695 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:56,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:50:56,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-01-06 16:50:56,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341655619] [2021-01-06 16:50:56,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 16:50:56,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:56,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 16:50:56,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-01-06 16:50:56,698 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 12 states. [2021-01-06 16:50:56,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:56,757 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-01-06 16:50:56,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 16:50:56,758 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2021-01-06 16:50:56,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:56,759 INFO L225 Difference]: With dead ends: 29 [2021-01-06 16:50:56,759 INFO L226 Difference]: Without dead ends: 18 [2021-01-06 16:50:56,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-01-06 16:50:56,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-01-06 16:50:56,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-01-06 16:50:56,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-01-06 16:50:56,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-01-06 16:50:56,763 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 14 [2021-01-06 16:50:56,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:56,763 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-01-06 16:50:56,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 16:50:56,763 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-01-06 16:50:56,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 16:50:56,764 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:56,764 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:56,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:56,980 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:56,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:56,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1651285649, now seen corresponding path program 3 times [2021-01-06 16:50:56,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:56,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621597856] [2021-01-06 16:50:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:57,205 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:57,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621597856] [2021-01-06 16:50:57,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017573915] [2021-01-06 16:50:57,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:57,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-06 16:50:57,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:50:57,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-06 16:50:57,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:50:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:57,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:50:57,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-01-06 16:50:57,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082769312] [2021-01-06 16:50:57,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 16:50:57,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:57,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 16:50:57,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-01-06 16:50:57,451 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 16 states. [2021-01-06 16:50:57,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:57,780 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2021-01-06 16:50:57,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-06 16:50:57,781 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 17 [2021-01-06 16:50:57,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:57,782 INFO L225 Difference]: With dead ends: 46 [2021-01-06 16:50:57,782 INFO L226 Difference]: Without dead ends: 29 [2021-01-06 16:50:57,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2021-01-06 16:50:57,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-06 16:50:57,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-01-06 16:50:57,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 16:50:57,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-01-06 16:50:57,787 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 17 [2021-01-06 16:50:57,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:57,787 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-01-06 16:50:57,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 16:50:57,787 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-01-06 16:50:57,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 16:50:57,788 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:57,788 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:57,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:58,000 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:58,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:58,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1011932452, now seen corresponding path program 1 times [2021-01-06 16:50:58,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:58,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934117339] [2021-01-06 16:50:58,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:58,078 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 16:50:58,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934117339] [2021-01-06 16:50:58,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710671362] [2021-01-06 16:50:58,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:58,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 16:50:58,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:50:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 16:50:58,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:50:58,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-01-06 16:50:58,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117165994] [2021-01-06 16:50:58,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 16:50:58,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:58,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 16:50:58,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 16:50:58,200 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 7 states. [2021-01-06 16:50:58,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:58,233 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2021-01-06 16:50:58,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 16:50:58,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2021-01-06 16:50:58,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:58,234 INFO L225 Difference]: With dead ends: 36 [2021-01-06 16:50:58,234 INFO L226 Difference]: Without dead ends: 27 [2021-01-06 16:50:58,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 16:50:58,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-06 16:50:58,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-01-06 16:50:58,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 16:50:58,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-01-06 16:50:58,238 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2021-01-06 16:50:58,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:58,239 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-01-06 16:50:58,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 16:50:58,239 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-01-06 16:50:58,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 16:50:58,240 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:58,240 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:58,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:58,455 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:58,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:58,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1903391558, now seen corresponding path program 4 times [2021-01-06 16:50:58,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:58,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118175161] [2021-01-06 16:50:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:58,825 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:58,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118175161] [2021-01-06 16:50:58,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869989804] [2021-01-06 16:50:58,826 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:58,913 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:50:58,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:50:58,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 58 conjunts are in the unsatisfiable core [2021-01-06 16:50:58,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:50:59,336 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:59,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:50:59,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 28 [2021-01-06 16:50:59,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494846609] [2021-01-06 16:50:59,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-06 16:50:59,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:59,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-06 16:50:59,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2021-01-06 16:50:59,339 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 28 states. [2021-01-06 16:50:59,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:59,939 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-01-06 16:50:59,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-06 16:50:59,939 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 26 [2021-01-06 16:50:59,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:59,940 INFO L225 Difference]: With dead ends: 32 [2021-01-06 16:50:59,940 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 16:50:59,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=189, Invalid=933, Unknown=0, NotChecked=0, Total=1122 [2021-01-06 16:50:59,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 16:50:59,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 16:50:59,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 16:50:59,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 16:50:59,942 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-01-06 16:50:59,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:59,942 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 16:50:59,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-06 16:50:59,942 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 16:50:59,943 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 16:51:00,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:51:00,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 16:51:00,163 INFO L189 CegarLoopUtils]: For program point L35-2(lines 24 49) no Hoare annotation was computed. [2021-01-06 16:51:00,164 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 16:51:00,164 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2021-01-06 16:51:00,164 INFO L192 CegarLoopUtils]: At program point L48(lines 24 49) the Hoare annotation is: true [2021-01-06 16:51:00,164 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 16:51:00,164 INFO L189 CegarLoopUtils]: For program point L30(lines 30 34) no Hoare annotation was computed. [2021-01-06 16:51:00,164 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 16:51:00,165 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 16:51:00,165 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-01-06 16:51:00,165 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-01-06 16:51:00,165 INFO L192 CegarLoopUtils]: At program point L45(lines 45 47) the Hoare annotation is: true [2021-01-06 16:51:00,165 INFO L189 CegarLoopUtils]: For program point L39(lines 39 43) no Hoare annotation was computed. [2021-01-06 16:51:00,165 INFO L189 CegarLoopUtils]: For program point L39-2(lines 24 49) no Hoare annotation was computed. [2021-01-06 16:51:00,165 INFO L189 CegarLoopUtils]: For program point L35(lines 35 44) no Hoare annotation was computed. [2021-01-06 16:51:00,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:51:00 BoogieIcfgContainer [2021-01-06 16:51:00,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:51:00,178 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:51:00,178 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:51:00,178 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:51:00,178 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:50:54" (3/4) ... [2021-01-06 16:51:00,183 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 16:51:00,194 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-01-06 16:51:00,195 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 16:51:00,195 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 16:51:00,195 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 16:51:00,243 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-lit/ddlm2013.i-witness.graphml [2021-01-06 16:51:00,243 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:51:00,245 INFO L168 Benchmark]: Toolchain (without parser) took 6190.95 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 128.9 MB in the beginning and 124.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 37.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:51:00,245 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 155.2 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:51:00,246 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.48 ms. Allocated memory is still 155.2 MB. Free memory was 128.5 MB in the beginning and 118.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:51:00,247 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.99 ms. Allocated memory is still 155.2 MB. Free memory was 118.8 MB in the beginning and 117.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:51:00,247 INFO L168 Benchmark]: Boogie Preprocessor took 21.95 ms. Allocated memory is still 155.2 MB. Free memory was 117.4 MB in the beginning and 116.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:51:00,248 INFO L168 Benchmark]: RCFGBuilder took 322.23 ms. Allocated memory is still 155.2 MB. Free memory was 116.1 MB in the beginning and 103.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:51:00,249 INFO L168 Benchmark]: TraceAbstraction took 5493.31 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 103.3 MB in the beginning and 126.6 MB in the end (delta: -23.3 MB). Peak memory consumption was 9.2 MB. Max. memory is 8.0 GB. [2021-01-06 16:51:00,249 INFO L168 Benchmark]: Witness Printer took 65.41 ms. Allocated memory is still 186.6 MB. Free memory was 126.6 MB in the beginning and 124.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:51:00,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 155.2 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 244.48 ms. Allocated memory is still 155.2 MB. Free memory was 128.5 MB in the beginning and 118.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 35.99 ms. Allocated memory is still 155.2 MB. Free memory was 118.8 MB in the beginning and 117.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 21.95 ms. Allocated memory is still 155.2 MB. Free memory was 117.4 MB in the beginning and 116.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 322.23 ms. Allocated memory is still 155.2 MB. Free memory was 116.1 MB in the beginning and 103.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5493.31 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 103.3 MB in the beginning and 126.6 MB in the end (delta: -23.3 MB). Peak memory consumption was 9.2 MB. Max. memory is 8.0 GB. * Witness Printer took 65.41 ms. Allocated memory is still 186.6 MB. Free memory was 126.6 MB in the beginning and 124.0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 8, TraceHistogramMax: 7, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 61 SDslu, 376 SDs, 0 SdLazy, 487 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=6, 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, 8 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 202 NumberOfCodeBlocks, 202 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 189 ConstructedInterpolants, 0 QuantifiedInterpolants, 40628 SizeOfPredicates, 17 NumberOfNonLiveVariables, 457 ConjunctsInSsa, 145 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 36/216 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...