java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:06:22,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:06:22,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:06:22,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:06:22,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:06:22,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:06:22,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:06:22,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:06:22,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:06:22,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:06:22,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:06:22,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:06:22,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:06:22,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:06:22,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:06:22,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:06:22,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:06:22,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:06:22,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:06:22,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:06:22,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:06:22,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:06:22,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:06:22,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:06:22,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:06:22,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:06:22,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:06:22,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:06:22,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:06:22,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:06:22,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:06:22,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:06:22,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:06:22,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:06:22,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:06:22,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:06:22,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:06:22,888 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:06:22,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:06:22,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:06:22,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:06:22,893 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:06:22,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:06:22,894 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:06:22,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:06:22,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:06:22,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:06:22,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:06:22,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:06:22,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:06:22,895 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:06:22,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:06:22,895 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:06:22,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:06:22,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:06:22,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:06:22,896 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:06:22,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:06:22,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:06:22,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:06:22,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:06:22,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:06:22,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:06:22,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:06:22,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:06:22,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:06:23,159 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:06:23,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:06:23,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:06:23,177 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:06:23,177 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:06:23,178 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005.i [2019-10-13 21:06:23,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c8aba9a/72f5bbfba3994510949a09416b2205e8/FLAG933882d44 [2019-10-13 21:06:23,773 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:06:23,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005.i [2019-10-13 21:06:23,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c8aba9a/72f5bbfba3994510949a09416b2205e8/FLAG933882d44 [2019-10-13 21:06:24,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c8aba9a/72f5bbfba3994510949a09416b2205e8 [2019-10-13 21:06:24,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:06:24,132 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:06:24,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:06:24,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:06:24,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:06:24,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:06:24" (1/1) ... [2019-10-13 21:06:24,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af8c95a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:24, skipping insertion in model container [2019-10-13 21:06:24,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:06:24" (1/1) ... [2019-10-13 21:06:24,149 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:06:24,170 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:06:24,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:06:24,394 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:06:24,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:06:24,427 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:06:24,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:24 WrapperNode [2019-10-13 21:06:24,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:06:24,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:06:24,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:06:24,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:06:24,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:24" (1/1) ... [2019-10-13 21:06:24,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:24" (1/1) ... [2019-10-13 21:06:24,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:24" (1/1) ... [2019-10-13 21:06:24,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:24" (1/1) ... [2019-10-13 21:06:24,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:24" (1/1) ... [2019-10-13 21:06:24,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:24" (1/1) ... [2019-10-13 21:06:24,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:24" (1/1) ... [2019-10-13 21:06:24,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:06:24,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:06:24,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:06:24,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:06:24,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:24" (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 [2019-10-13 21:06:24,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:06:24,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:06:24,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:06:24,593 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:06:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:06:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 21:06:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:06:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:06:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:06:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:06:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:06:24,735 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:06:24,735 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:06:24,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:06:24 BoogieIcfgContainer [2019-10-13 21:06:24,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:06:24,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:06:24,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:06:24,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:06:24,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:06:24" (1/3) ... [2019-10-13 21:06:24,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235c15ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:06:24, skipping insertion in model container [2019-10-13 21:06:24,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:24" (2/3) ... [2019-10-13 21:06:24,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235c15ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:06:24, skipping insertion in model container [2019-10-13 21:06:24,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:06:24" (3/3) ... [2019-10-13 21:06:24,745 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005.i [2019-10-13 21:06:24,756 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:06:24,763 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:06:24,771 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:06:24,794 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:06:24,795 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:06:24,795 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:06:24,795 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:06:24,795 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:06:24,795 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:06:24,795 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:06:24,796 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:06:24,814 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-13 21:06:24,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 21:06:24,819 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:06:24,820 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:06:24,822 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:06:24,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:06:24,826 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2019-10-13 21:06:24,835 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:06:24,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233741036] [2019-10-13 21:06:24,835 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:24,836 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:24,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:06:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:06:24,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:06:24,961 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233741036] [2019-10-13 21:06:24,962 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:06:24,962 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:06:24,963 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932178357] [2019-10-13 21:06:24,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:06:24,968 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:06:24,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:06:24,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:06:24,987 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2019-10-13 21:06:25,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:06:25,033 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-10-13 21:06:25,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:06:25,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-10-13 21:06:25,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:06:25,050 INFO L225 Difference]: With dead ends: 31 [2019-10-13 21:06:25,050 INFO L226 Difference]: Without dead ends: 12 [2019-10-13 21:06:25,055 INFO L600 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 [2019-10-13 21:06:25,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-13 21:06:25,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-13 21:06:25,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-13 21:06:25,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-13 21:06:25,104 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-13 21:06:25,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:06:25,104 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-13 21:06:25,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:06:25,105 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-13 21:06:25,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 21:06:25,106 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:06:25,106 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:06:25,106 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:06:25,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:06:25,107 INFO L82 PathProgramCache]: Analyzing trace with hash -429188558, now seen corresponding path program 1 times [2019-10-13 21:06:25,107 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:06:25,108 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122822528] [2019-10-13 21:06:25,108 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:25,108 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:25,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:06:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:06:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:06:25,154 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122822528] [2019-10-13 21:06:25,155 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526854597] [2019-10-13 21:06:25,155 INFO L94 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 [2019-10-13 21:06:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:06:25,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 21:06:25,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:06:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:06:25,265 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:06:25,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:06:25,306 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1802128010] [2019-10-13 21:06:25,312 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 12 [2019-10-13 21:06:25,342 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 21:06:25,342 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 21:06:25,438 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-13 21:06:25,441 INFO L272 AbstractInterpreter]: Visited 11 different actions 31 times. Merged at 2 different actions 8 times. Widened at 1 different actions 2 times. Performed 63 root evaluator evaluations with a maximum evaluation depth of 4. Performed 63 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2019-10-13 21:06:25,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:06:25,446 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:06:25,446 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:06:25,447 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2019-10-13 21:06:25,447 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823303799] [2019-10-13 21:06:25,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:06:25,449 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:06:25,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:06:25,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:06:25,450 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2019-10-13 21:06:25,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:06:25,483 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-10-13 21:06:25,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:06:25,484 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-10-13 21:06:25,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:06:25,485 INFO L225 Difference]: With dead ends: 20 [2019-10-13 21:06:25,485 INFO L226 Difference]: Without dead ends: 15 [2019-10-13 21:06:25,486 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:06:25,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-13 21:06:25,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-13 21:06:25,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-13 21:06:25,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-10-13 21:06:25,495 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2019-10-13 21:06:25,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:06:25,495 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-10-13 21:06:25,495 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:06:25,496 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-10-13 21:06:25,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 21:06:25,496 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:06:25,497 INFO L380 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:06:25,700 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:06:25,701 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:06:25,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:06:25,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1090549245, now seen corresponding path program 2 times [2019-10-13 21:06:25,702 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:06:25,702 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997707715] [2019-10-13 21:06:25,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:25,703 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:25,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:06:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:06:25,880 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:06:25,881 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997707715] [2019-10-13 21:06:25,881 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877246299] [2019-10-13 21:06:25,881 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2019-10-13 21:06:25,932 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 21:06:25,933 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:06:25,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-13 21:06:25,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:06:25,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:06:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:06:26,005 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:06:26,031 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:06:26,031 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [927481661] [2019-10-13 21:06:26,032 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-10-13 21:06:26,032 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-10-13 21:06:26,032 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:06:26,033 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2019-10-13 21:06:26,033 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486297836] [2019-10-13 21:06:26,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:06:26,034 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:06:26,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:06:26,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:06:26,035 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 11 states. [2019-10-13 21:06:26,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:06:26,128 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2019-10-13 21:06:26,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:06:26,129 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2019-10-13 21:06:26,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:06:26,130 INFO L225 Difference]: With dead ends: 21 [2019-10-13 21:06:26,130 INFO L226 Difference]: Without dead ends: 16 [2019-10-13 21:06:26,131 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:06:26,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-13 21:06:26,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-13 21:06:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-13 21:06:26,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-10-13 21:06:26,136 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2019-10-13 21:06:26,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:06:26,137 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-10-13 21:06:26,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:06:26,137 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-10-13 21:06:26,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 21:06:26,138 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:06:26,138 INFO L380 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:06:26,339 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:06:26,339 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:06:26,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:06:26,340 INFO L82 PathProgramCache]: Analyzing trace with hash -517174030, now seen corresponding path program 3 times [2019-10-13 21:06:26,340 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:06:26,340 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370468273] [2019-10-13 21:06:26,341 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:26,341 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:26,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:06:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:06:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:06:26,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370468273] [2019-10-13 21:06:26,432 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:06:26,432 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:06:26,432 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890440715] [2019-10-13 21:06:26,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:06:26,433 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:06:26,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:06:26,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:06:26,434 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2019-10-13 21:06:26,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:06:26,450 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-10-13 21:06:26,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:06:26,451 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-10-13 21:06:26,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:06:26,451 INFO L225 Difference]: With dead ends: 16 [2019-10-13 21:06:26,451 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 21:06:26,452 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:06:26,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 21:06:26,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 21:06:26,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 21:06:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 21:06:26,453 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-10-13 21:06:26,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:06:26,453 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 21:06:26,453 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:06:26,454 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 21:06:26,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 21:06:26,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 21:06:26,610 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-13 21:06:26,610 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:06:26,610 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:06:26,610 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 21:06:26,610 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:06:26,610 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:06:26,611 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2019-10-13 21:06:26,611 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2019-10-13 21:06:26,611 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-10-13 21:06:26,611 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2019-10-13 21:06:26,611 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (or (and (<= 8 main_~j~0) (<= main_~j~0 8) (<= main_~j~0 (+ main_~i~0 3)) (< (+ main_~i~0 2) main_~j~0)) (and (<= 6 main_~j~0) (<= (+ main_~j~0 3) main_~i~0) (<= main_~j~0 6)) (and (<= 7 main_~j~0) (<= main_~j~0 main_~i~0) (<= main_~j~0 7) (<= main_~i~0 main_~j~0)) (and (<= main_~j~0 (+ main_~i~0 9)) (<= main_~i~0 1) (<= 10 main_~j~0)) (and (<= main_~i~0 3) (<= main_~j~0 (+ main_~i~0 6)) (<= 9 main_~j~0))) [2019-10-13 21:06:26,612 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 17) the Hoare annotation is: (and (<= 6 main_~j~0) (<= main_~j~0 6)) [2019-10-13 21:06:26,612 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-13 21:06:26,613 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-13 21:06:26,613 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-13 21:06:26,613 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-13 21:06:26,613 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-13 21:06:26,613 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-13 21:06:26,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:06:26 BoogieIcfgContainer [2019-10-13 21:06:26,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:06:26,646 INFO L168 Benchmark]: Toolchain (without parser) took 2511.53 ms. Allocated memory was 137.4 MB in the beginning and 231.7 MB in the end (delta: 94.4 MB). Free memory was 101.7 MB in the beginning and 176.6 MB in the end (delta: -74.9 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:26,648 INFO L168 Benchmark]: CDTParser took 1.16 ms. Allocated memory is still 137.4 MB. Free memory was 119.4 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:06:26,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.90 ms. Allocated memory is still 137.4 MB. Free memory was 101.3 MB in the beginning and 91.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:26,652 INFO L168 Benchmark]: Boogie Preprocessor took 110.81 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 91.8 MB in the beginning and 178.7 MB in the end (delta: -86.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:26,659 INFO L168 Benchmark]: RCFGBuilder took 197.41 ms. Allocated memory is still 200.3 MB. Free memory was 178.7 MB in the beginning and 168.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:26,660 INFO L168 Benchmark]: TraceAbstraction took 1903.74 ms. Allocated memory was 200.3 MB in the beginning and 231.7 MB in the end (delta: 31.5 MB). Free memory was 168.3 MB in the beginning and 176.6 MB in the end (delta: -8.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:26,672 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.16 ms. Allocated memory is still 137.4 MB. Free memory was 119.4 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 294.90 ms. Allocated memory is still 137.4 MB. Free memory was 101.3 MB in the beginning and 91.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.81 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 91.8 MB in the beginning and 178.7 MB in the end (delta: -86.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 197.41 ms. Allocated memory is still 200.3 MB. Free memory was 178.7 MB in the beginning and 168.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1903.74 ms. Allocated memory was 200.3 MB in the beginning and 231.7 MB in the end (delta: 31.5 MB). Free memory was 168.3 MB in the beginning and 176.6 MB in the end (delta: -8.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((8 <= j && j <= 8) && j <= i + 3) && i + 2 < j) || ((6 <= j && j + 3 <= i) && j <= 6)) || (((7 <= j && j <= i) && j <= 7) && i <= j)) || ((j <= i + 9 && i <= 1) && 10 <= j)) || ((i <= 3 && j <= i + 6) && 9 <= j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 40 SDtfs, 1 SDslu, 106 SDs, 0 SdLazy, 93 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 16 NumberOfFragments, 79 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 3244 SizeOfPredicates, 4 NumberOfNonLiveVariables, 73 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 15/48 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...