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 -i ../../../trunk/examples/svcomp/loop-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:15:23,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:15:23,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:15:24,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:15:24,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:15:24,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:15:24,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:15:24,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:15:24,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:15:24,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:15:24,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:15:24,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:15:24,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:15:24,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:15:24,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:15:24,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:15:24,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:15:24,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:15:24,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:15:24,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:15:24,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:15:24,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:15:24,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:15:24,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:15:24,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:15:24,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:15:24,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:15:24,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:15:24,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:15:24,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:15:24,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:15:24,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:15:24,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:15:24,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:15:24,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:15:24,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:15:24,070 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 [2019-10-14 23:15:24,107 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:15:24,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:15:24,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:15:24,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:15:24,109 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:15:24,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:15:24,110 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:15:24,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:15:24,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:15:24,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:15:24,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:15:24,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:15:24,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:15:24,114 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:15:24,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:15:24,115 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:15:24,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:15:24,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:15:24,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:15:24,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:15:24,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:15:24,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:15:24,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:15:24,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:15:24,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:15:24,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:15:24,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:15:24,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:15:24,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:15:24,426 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:15:24,440 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:15:24,444 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:15:24,446 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:15:24,446 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:15:24,447 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2019-10-14 23:15:24,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5a313601/0cfc38c1d9d0428890f94ee8fccc5f7a/FLAG90418dadd [2019-10-14 23:15:24,963 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:15:24,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2019-10-14 23:15:24,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5a313601/0cfc38c1d9d0428890f94ee8fccc5f7a/FLAG90418dadd [2019-10-14 23:15:25,385 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5a313601/0cfc38c1d9d0428890f94ee8fccc5f7a [2019-10-14 23:15:25,400 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:15:25,404 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:15:25,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:15:25,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:15:25,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:15:25,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:15:25" (1/1) ... [2019-10-14 23:15:25,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a8f9260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:25, skipping insertion in model container [2019-10-14 23:15:25,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:15:25" (1/1) ... [2019-10-14 23:15:25,426 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:15:25,446 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:15:25,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:15:25,700 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:15:25,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:15:25,746 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:15:25,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:25 WrapperNode [2019-10-14 23:15:25,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:15:25,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:15:25,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:15:25,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:15:25,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:25" (1/1) ... [2019-10-14 23:15:25,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:25" (1/1) ... [2019-10-14 23:15:25,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:25" (1/1) ... [2019-10-14 23:15:25,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:25" (1/1) ... [2019-10-14 23:15:25,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:25" (1/1) ... [2019-10-14 23:15:25,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:25" (1/1) ... [2019-10-14 23:15:25,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:25" (1/1) ... [2019-10-14 23:15:25,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:15:25,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:15:25,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:15:25,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:15:25,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:25" (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 [2019-10-14 23:15:25,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:15:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:15:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:15:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:15:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:15:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:15:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:15:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:15:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:15:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:15:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:15:26,153 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:15:26,153 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-14 23:15:26,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:15:26 BoogieIcfgContainer [2019-10-14 23:15:26,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:15:26,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:15:26,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:15:26,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:15:26,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:15:25" (1/3) ... [2019-10-14 23:15:26,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493d54a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:15:26, skipping insertion in model container [2019-10-14 23:15:26,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:25" (2/3) ... [2019-10-14 23:15:26,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493d54a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:15:26, skipping insertion in model container [2019-10-14 23:15:26,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:15:26" (3/3) ... [2019-10-14 23:15:26,164 INFO L109 eAbstractionObserver]: Analyzing ICFG large_const.i [2019-10-14 23:15:26,175 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:15:26,184 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:15:26,198 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:15:26,236 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:15:26,236 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:15:26,236 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:15:26,236 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:15:26,236 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:15:26,237 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:15:26,237 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:15:26,237 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:15:26,268 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-14 23:15:26,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-14 23:15:26,280 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:26,282 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:26,284 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:26,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:26,294 INFO L82 PathProgramCache]: Analyzing trace with hash 576145336, now seen corresponding path program 1 times [2019-10-14 23:15:26,305 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:26,305 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069928800] [2019-10-14 23:15:26,306 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:26,306 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:26,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:26,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069928800] [2019-10-14 23:15:26,463 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:15:26,463 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:15:26,463 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104690316] [2019-10-14 23:15:26,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:15:26,468 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:26,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:15:26,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:15:26,482 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-10-14 23:15:26,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:26,507 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2019-10-14 23:15:26,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:15:26,509 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-14 23:15:26,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:26,519 INFO L225 Difference]: With dead ends: 40 [2019-10-14 23:15:26,520 INFO L226 Difference]: Without dead ends: 20 [2019-10-14 23:15:26,523 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:15:26,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-14 23:15:26,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-14 23:15:26,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-14 23:15:26,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-10-14 23:15:26,560 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2019-10-14 23:15:26,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:26,561 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-10-14 23:15:26,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:15:26,561 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-10-14 23:15:26,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-14 23:15:26,562 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:26,562 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:26,563 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:26,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:26,563 INFO L82 PathProgramCache]: Analyzing trace with hash 893444581, now seen corresponding path program 1 times [2019-10-14 23:15:26,564 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:26,564 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980344718] [2019-10-14 23:15:26,564 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:26,564 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:26,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:26,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:26,647 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980344718] [2019-10-14 23:15:26,648 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:15:26,648 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:15:26,648 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119977803] [2019-10-14 23:15:26,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:15:26,650 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:26,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:15:26,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:15:26,651 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2019-10-14 23:15:26,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:26,739 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-10-14 23:15:26,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:15:26,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-14 23:15:26,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:26,741 INFO L225 Difference]: With dead ends: 32 [2019-10-14 23:15:26,741 INFO L226 Difference]: Without dead ends: 21 [2019-10-14 23:15:26,742 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:15:26,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-14 23:15:26,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-14 23:15:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-14 23:15:26,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-10-14 23:15:26,748 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2019-10-14 23:15:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:26,749 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-10-14 23:15:26,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:15:26,749 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-10-14 23:15:26,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-14 23:15:26,750 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:26,750 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:26,751 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:26,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:26,751 INFO L82 PathProgramCache]: Analyzing trace with hash -884671747, now seen corresponding path program 1 times [2019-10-14 23:15:26,751 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:26,752 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733978544] [2019-10-14 23:15:26,752 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:26,752 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:26,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:26,862 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733978544] [2019-10-14 23:15:26,863 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069874229] [2019-10-14 23:15:26,863 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 [2019-10-14 23:15:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:26,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:15:26,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:15:26,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:15:27,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:27,029 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:15:27,029 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-10-14 23:15:27,030 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619042185] [2019-10-14 23:15:27,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:15:27,031 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:27,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:15:27,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:15:27,032 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 10 states. [2019-10-14 23:15:27,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:27,214 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2019-10-14 23:15:27,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:15:27,215 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-10-14 23:15:27,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:27,218 INFO L225 Difference]: With dead ends: 41 [2019-10-14 23:15:27,218 INFO L226 Difference]: Without dead ends: 39 [2019-10-14 23:15:27,219 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:15:27,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-14 23:15:27,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2019-10-14 23:15:27,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-14 23:15:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-10-14 23:15:27,249 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2019-10-14 23:15:27,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:27,250 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-10-14 23:15:27,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:15:27,250 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-10-14 23:15:27,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-14 23:15:27,251 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:27,252 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:27,456 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:15:27,456 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:27,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:27,457 INFO L82 PathProgramCache]: Analyzing trace with hash 213378718, now seen corresponding path program 1 times [2019-10-14 23:15:27,458 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:27,458 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28039867] [2019-10-14 23:15:27,459 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:27,459 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:27,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:27,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:27,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28039867] [2019-10-14 23:15:27,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511331150] [2019-10-14 23:15:27,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-14 23:15:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:27,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:15:27,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:15:27,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:15:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:27,697 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:15:27,698 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-10-14 23:15:27,698 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671019023] [2019-10-14 23:15:27,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:15:27,699 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:27,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:15:27,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:15:27,700 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 10 states. [2019-10-14 23:15:27,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:27,835 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2019-10-14 23:15:27,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:15:27,835 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-10-14 23:15:27,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:27,839 INFO L225 Difference]: With dead ends: 51 [2019-10-14 23:15:27,839 INFO L226 Difference]: Without dead ends: 49 [2019-10-14 23:15:27,840 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:15:27,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-10-14 23:15:27,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2019-10-14 23:15:27,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-14 23:15:27,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2019-10-14 23:15:27,861 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 17 [2019-10-14 23:15:27,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:27,862 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2019-10-14 23:15:27,862 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:15:27,866 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2019-10-14 23:15:27,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-14 23:15:27,867 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:27,869 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:28,069 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:15:28,070 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:28,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:28,071 INFO L82 PathProgramCache]: Analyzing trace with hash -595967908, now seen corresponding path program 1 times [2019-10-14 23:15:28,071 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:28,072 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031600363] [2019-10-14 23:15:28,072 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:28,073 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:28,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:28,156 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031600363] [2019-10-14 23:15:28,156 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285037497] [2019-10-14 23:15:28,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-10-14 23:15:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:15:28,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:15:28,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:15:28,221 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:15:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:28,260 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:15:28,260 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-10-14 23:15:28,260 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257381340] [2019-10-14 23:15:28,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:15:28,261 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:28,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:15:28,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:15:28,262 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand 10 states. [2019-10-14 23:15:28,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:28,394 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-10-14 23:15:28,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:15:28,395 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-10-14 23:15:28,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:28,398 INFO L225 Difference]: With dead ends: 55 [2019-10-14 23:15:28,398 INFO L226 Difference]: Without dead ends: 53 [2019-10-14 23:15:28,399 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:15:28,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-10-14 23:15:28,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2019-10-14 23:15:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-14 23:15:28,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2019-10-14 23:15:28,416 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 17 [2019-10-14 23:15:28,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:28,416 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2019-10-14 23:15:28,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:15:28,418 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2019-10-14 23:15:28,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-14 23:15:28,424 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:28,424 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:28,627 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:15:28,627 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:28,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:28,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1650045878, now seen corresponding path program 1 times [2019-10-14 23:15:28,628 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:28,629 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353416135] [2019-10-14 23:15:28,629 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:28,630 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:28,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:28,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:28,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353416135] [2019-10-14 23:15:28,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172731915] [2019-10-14 23:15:28,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2019-10-14 23:15:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:28,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:15:28,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:15:28,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:28,889 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:15:28,890 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2019-10-14 23:15:28,890 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860037710] [2019-10-14 23:15:28,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:15:28,891 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:28,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:15:28,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:15:28,891 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand 5 states. [2019-10-14 23:15:28,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:28,910 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2019-10-14 23:15:28,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:15:28,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-14 23:15:28,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:28,912 INFO L225 Difference]: With dead ends: 61 [2019-10-14 23:15:28,912 INFO L226 Difference]: Without dead ends: 29 [2019-10-14 23:15:28,914 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:15:28,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-14 23:15:28,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-10-14 23:15:28,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-14 23:15:28,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-10-14 23:15:28,925 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2019-10-14 23:15:28,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:28,925 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-10-14 23:15:28,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:15:28,925 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-10-14 23:15:28,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-14 23:15:28,926 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:28,926 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:29,127 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:15:29,128 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:29,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:29,128 INFO L82 PathProgramCache]: Analyzing trace with hash -785465255, now seen corresponding path program 1 times [2019-10-14 23:15:29,129 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:29,129 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744585000] [2019-10-14 23:15:29,129 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:29,130 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:29,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:29,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:15:29,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744585000] [2019-10-14 23:15:29,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75735813] [2019-10-14 23:15:29,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2019-10-14 23:15:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:29,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:15:29,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:15:29,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:29,342 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:15:29,343 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2019-10-14 23:15:29,343 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588709611] [2019-10-14 23:15:29,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:15:29,344 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:29,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:15:29,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:15:29,345 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2019-10-14 23:15:29,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:29,389 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2019-10-14 23:15:29,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:15:29,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-10-14 23:15:29,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:29,390 INFO L225 Difference]: With dead ends: 29 [2019-10-14 23:15:29,390 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:15:29,391 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:15:29,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:15:29,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:15:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:15:29,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:15:29,392 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-10-14 23:15:29,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:29,392 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:15:29,392 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:15:29,393 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:15:29,393 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:15:29,596 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:15:29,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:15:29,899 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-14 23:15:29,899 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:15:29,899 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:15:29,899 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:15:29,899 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:15:29,899 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:15:29,900 INFO L439 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 10000 main_~c3~0) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (< main_~n~0 2) (<= 2000 main_~k~0)) [2019-10-14 23:15:29,900 INFO L443 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2019-10-14 23:15:29,900 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 38) no Hoare annotation was computed. [2019-10-14 23:15:29,900 INFO L443 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-10-14 23:15:29,900 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-10-14 23:15:29,901 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 38) no Hoare annotation was computed. [2019-10-14 23:15:29,901 INFO L439 ceAbstractionStarter]: At program point L32-2(lines 32 36) the Hoare annotation is: (let ((.cse1 (<= 10000 main_~c3~0)) (.cse2 (<= 2000 main_~c2~0)) (.cse3 (<= 4000 main_~c1~0)) (.cse0 (<= 1 main_~i~0)) (.cse4 (< main_~n~0 2))) (or (and (<= main_~n~0 0) (<= main_~i~0 0) (<= main_~n~0 main_~j~0)) (and (<= 0 main_~j~0) .cse0 (and .cse1 (and .cse2 .cse3 (<= 2000 main_~k~0))) .cse4) (and .cse1 .cse2 .cse3 .cse0 (<= 1 main_~j~0) .cse4))) [2019-10-14 23:15:29,901 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 38) the Hoare annotation is: true [2019-10-14 23:15:29,901 INFO L443 ceAbstractionStarter]: For program point L32-3(lines 32 36) no Hoare annotation was computed. [2019-10-14 23:15:29,901 INFO L443 ceAbstractionStarter]: For program point L26(lines 26 29) no Hoare annotation was computed. [2019-10-14 23:15:29,901 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 29) no Hoare annotation was computed. [2019-10-14 23:15:29,902 INFO L439 ceAbstractionStarter]: At program point L26-2(lines 20 30) the Hoare annotation is: (let ((.cse0 (<= 10000 main_~c3~0)) (.cse1 (<= 2000 main_~c2~0)) (.cse2 (<= 4000 main_~c1~0))) (or (and (and .cse0 .cse1 .cse2 (<= 1 main_~i~0) (<= 2000 main_~k~0)) (< main_~n~0 2)) (and .cse0 .cse1 .cse2 (<= 0 main_~i~0) (<= 0 main_~k~0) (<= main_~i~0 0)))) [2019-10-14 23:15:29,902 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 30) no Hoare annotation was computed. [2019-10-14 23:15:29,902 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-14 23:15:29,902 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-14 23:15:29,902 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:15:29,902 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-14 23:15:29,903 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-14 23:15:29,903 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:15:29,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:15:29 BoogieIcfgContainer [2019-10-14 23:15:29,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:15:29,923 INFO L168 Benchmark]: Toolchain (without parser) took 4521.02 ms. Allocated memory was 137.9 MB in the beginning and 247.5 MB in the end (delta: 109.6 MB). Free memory was 102.9 MB in the beginning and 190.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 119.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:29,924 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:15:29,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.27 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 93.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:29,926 INFO L168 Benchmark]: Boogie Preprocessor took 127.94 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 93.1 MB in the beginning and 179.6 MB in the end (delta: -86.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:29,927 INFO L168 Benchmark]: RCFGBuilder took 279.15 ms. Allocated memory is still 201.3 MB. Free memory was 179.6 MB in the beginning and 165.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:29,928 INFO L168 Benchmark]: TraceAbstraction took 3764.24 ms. Allocated memory was 201.3 MB in the beginning and 247.5 MB in the end (delta: 46.1 MB). Free memory was 165.5 MB in the beginning and 190.5 MB in the end (delta: -25.0 MB). Peak memory consumption was 118.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:29,932 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 339.27 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 93.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.94 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 93.1 MB in the beginning and 179.6 MB in the end (delta: -86.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 279.15 ms. Allocated memory is still 201.3 MB. Free memory was 179.6 MB in the beginning and 165.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3764.24 ms. Allocated memory was 201.3 MB in the beginning and 247.5 MB in the end (delta: 46.1 MB). Free memory was 165.5 MB in the beginning and 190.5 MB in the end (delta: -25.0 MB). Peak memory consumption was 118.2 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: 20]: Loop Invariant Derived loop invariant: (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 1 <= i) && 2000 <= k) && n < 2) || (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 0 <= i) && 0 <= k) && i <= 0) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((n <= 0 && i <= 0) && n <= j) || (((0 <= j && 1 <= i) && 10000 <= c3 && (2000 <= c2 && 4000 <= c1) && 2000 <= k) && n < 2)) || (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 1 <= i) && 1 <= j) && n < 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Result: SAFE, OverallTime: 3.6s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 168 SDtfs, 118 SDslu, 478 SDs, 0 SdLazy, 273 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 33 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 19 NumberOfFragments, 123 HoareAnnotationTreeSize, 13 FomulaSimplifications, 136 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 83 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 212 NumberOfCodeBlocks, 212 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 9943 SizeOfPredicates, 12 NumberOfNonLiveVariables, 344 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 13/26 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...