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/loops/ludcmp.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 16:11:24,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 16:11:24,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 16:11:24,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 16:11:24,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 16:11:24,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 16:11:24,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 16:11:24,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 16:11:24,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 16:11:24,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 16:11:24,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 16:11:24,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 16:11:24,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 16:11:24,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 16:11:24,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 16:11:24,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 16:11:24,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 16:11:24,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 16:11:24,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 16:11:24,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 16:11:24,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 16:11:24,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 16:11:24,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 16:11:24,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 16:11:24,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 16:11:24,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 16:11:24,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 16:11:24,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 16:11:24,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 16:11:24,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 16:11:24,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 16:11:24,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 16:11:24,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 16:11:24,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 16:11:24,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 16:11:24,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 16:11:24,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 16:11:24,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 16:11:24,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 16:11:24,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 16:11:24,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 16:11:24,584 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 [2019-09-16 16:11:24,598 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 16:11:24,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 16:11:24,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 16:11:24,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 16:11:24,600 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 16:11:24,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 16:11:24,600 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 16:11:24,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 16:11:24,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 16:11:24,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 16:11:24,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 16:11:24,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 16:11:24,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 16:11:24,602 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 16:11:24,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 16:11:24,602 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 16:11:24,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 16:11:24,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 16:11:24,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 16:11:24,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 16:11:24,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 16:11:24,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:11:24,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 16:11:24,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 16:11:24,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 16:11:24,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 16:11:24,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 16:11:24,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 16:11:24,605 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 16:11:24,632 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 16:11:24,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 16:11:24,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 16:11:24,650 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 16:11:24,650 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 16:11:24,651 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/ludcmp.c [2019-09-16 16:11:24,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98a067926/70ba58c02fbf4e73a9077d7d2ddd705d/FLAG289ea7f34 [2019-09-16 16:11:25,115 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 16:11:25,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/ludcmp.c [2019-09-16 16:11:25,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98a067926/70ba58c02fbf4e73a9077d7d2ddd705d/FLAG289ea7f34 [2019-09-16 16:11:25,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98a067926/70ba58c02fbf4e73a9077d7d2ddd705d [2019-09-16 16:11:25,538 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 16:11:25,540 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 16:11:25,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 16:11:25,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 16:11:25,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 16:11:25,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:11:25" (1/1) ... [2019-09-16 16:11:25,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb381e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:25, skipping insertion in model container [2019-09-16 16:11:25,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:11:25" (1/1) ... [2019-09-16 16:11:25,556 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 16:11:25,580 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 16:11:25,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:11:25,982 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 16:11:26,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:11:26,054 INFO L192 MainTranslator]: Completed translation [2019-09-16 16:11:26,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26 WrapperNode [2019-09-16 16:11:26,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 16:11:26,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 16:11:26,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 16:11:26,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 16:11:26,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (1/1) ... [2019-09-16 16:11:26,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (1/1) ... [2019-09-16 16:11:26,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (1/1) ... [2019-09-16 16:11:26,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (1/1) ... [2019-09-16 16:11:26,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (1/1) ... [2019-09-16 16:11:26,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (1/1) ... [2019-09-16 16:11:26,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (1/1) ... [2019-09-16 16:11:26,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 16:11:26,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 16:11:26,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 16:11:26,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 16:11:26,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (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 [2019-09-16 16:11:26,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 16:11:26,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 16:11:26,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 16:11:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2019-09-16 16:11:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 16:11:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2019-09-16 16:11:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 16:11:26,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 16:11:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2019-09-16 16:11:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2019-09-16 16:11:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 16:11:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-16 16:11:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-16 16:11:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 16:11:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 16:11:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 16:11:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 16:11:26,664 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 16:11:26,664 INFO L283 CfgBuilder]: Removed 11 assume(true) statements. [2019-09-16 16:11:26,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:11:26 BoogieIcfgContainer [2019-09-16 16:11:26,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 16:11:26,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 16:11:26,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 16:11:26,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 16:11:26,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 04:11:25" (1/3) ... [2019-09-16 16:11:26,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31253333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:11:26, skipping insertion in model container [2019-09-16 16:11:26,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:26" (2/3) ... [2019-09-16 16:11:26,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31253333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:11:26, skipping insertion in model container [2019-09-16 16:11:26,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:11:26" (3/3) ... [2019-09-16 16:11:26,673 INFO L109 eAbstractionObserver]: Analyzing ICFG ludcmp.c [2019-09-16 16:11:26,690 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 16:11:26,698 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 16:11:26,713 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 16:11:26,745 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-16 16:11:26,746 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 16:11:26,746 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-16 16:11:26,747 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 16:11:26,747 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 16:11:26,747 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 16:11:26,747 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 16:11:26,747 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 16:11:26,748 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 16:11:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2019-09-16 16:11:26,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-16 16:11:26,772 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:26,773 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:26,775 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:26,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:26,781 INFO L82 PathProgramCache]: Analyzing trace with hash 406725423, now seen corresponding path program 1 times [2019-09-16 16:11:26,783 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:26,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:26,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:26,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:26,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:26,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:26,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:11:26,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 16:11:26,946 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 16:11:26,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 16:11:26,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 16:11:26,961 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 2 states. [2019-09-16 16:11:26,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:26,993 INFO L93 Difference]: Finished difference Result 122 states and 178 transitions. [2019-09-16 16:11:26,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 16:11:26,994 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-09-16 16:11:26,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:27,002 INFO L225 Difference]: With dead ends: 122 [2019-09-16 16:11:27,003 INFO L226 Difference]: Without dead ends: 20 [2019-09-16 16:11:27,007 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 16:11:27,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-09-16 16:11:27,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-09-16 16:11:27,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-16 16:11:27,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-09-16 16:11:27,041 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2019-09-16 16:11:27,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:27,042 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-09-16 16:11:27,042 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 16:11:27,042 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-09-16 16:11:27,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-16 16:11:27,043 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:27,043 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:27,044 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:27,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:27,044 INFO L82 PathProgramCache]: Analyzing trace with hash 394719650, now seen corresponding path program 1 times [2019-09-16 16:11:27,045 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:27,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:27,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:27,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:27,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:27,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:27,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:11:27,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 16:11:27,180 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 16:11:27,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 16:11:27,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-16 16:11:27,181 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 4 states. [2019-09-16 16:11:27,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:27,243 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-09-16 16:11:27,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 16:11:27,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-09-16 16:11:27,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:27,248 INFO L225 Difference]: With dead ends: 38 [2019-09-16 16:11:27,248 INFO L226 Difference]: Without dead ends: 24 [2019-09-16 16:11:27,250 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-16 16:11:27,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-16 16:11:27,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-09-16 16:11:27,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-16 16:11:27,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-09-16 16:11:27,258 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2019-09-16 16:11:27,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:27,258 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-09-16 16:11:27,258 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 16:11:27,259 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-09-16 16:11:27,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-16 16:11:27,259 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:27,259 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:27,260 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:27,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:27,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1180233829, now seen corresponding path program 1 times [2019-09-16 16:11:27,261 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:27,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:27,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:27,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:27,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:27,345 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:11:27,346 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:11:27,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:27,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-16 16:11:27,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:11:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:27,492 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:11:27,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-09-16 16:11:27,492 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 16:11:27,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 16:11:27,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-09-16 16:11:27,496 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 7 states. [2019-09-16 16:11:27,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:27,562 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2019-09-16 16:11:27,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 16:11:27,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2019-09-16 16:11:27,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:27,565 INFO L225 Difference]: With dead ends: 43 [2019-09-16 16:11:27,565 INFO L226 Difference]: Without dead ends: 28 [2019-09-16 16:11:27,566 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-09-16 16:11:27,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-09-16 16:11:27,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2019-09-16 16:11:27,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-09-16 16:11:27,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-09-16 16:11:27,572 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2019-09-16 16:11:27,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:27,572 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-09-16 16:11:27,573 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 16:11:27,573 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-09-16 16:11:27,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-16 16:11:27,574 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:27,574 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:27,574 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:27,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:27,575 INFO L82 PathProgramCache]: Analyzing trace with hash -232421100, now seen corresponding path program 2 times [2019-09-16 16:11:27,575 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:27,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:27,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:27,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:27,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:27,712 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:11:27,713 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:11:27,746 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-16 16:11:27,774 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-16 16:11:27,775 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:11:27,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-16 16:11:27,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:11:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:27,830 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:11:27,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-09-16 16:11:27,831 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 16:11:27,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 16:11:27,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-09-16 16:11:27,832 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 9 states. [2019-09-16 16:11:27,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:27,892 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2019-09-16 16:11:27,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 16:11:27,892 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2019-09-16 16:11:27,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:27,893 INFO L225 Difference]: With dead ends: 51 [2019-09-16 16:11:27,894 INFO L226 Difference]: Without dead ends: 32 [2019-09-16 16:11:27,894 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-09-16 16:11:27,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-09-16 16:11:27,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2019-09-16 16:11:27,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-16 16:11:27,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-09-16 16:11:27,900 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 20 [2019-09-16 16:11:27,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:27,900 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-09-16 16:11:27,900 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 16:11:27,901 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-09-16 16:11:27,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-16 16:11:27,901 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:27,902 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:27,902 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:27,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:27,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1802018317, now seen corresponding path program 3 times [2019-09-16 16:11:27,902 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:27,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:27,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:27,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:11:27,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:28,000 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:28,001 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:11:28,001 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:11:28,035 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-16 16:11:28,066 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-09-16 16:11:28,066 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:11:28,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-16 16:11:28,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:11:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-16 16:11:28,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 16:11:28,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2019-09-16 16:11:28,110 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 16:11:28,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 16:11:28,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-09-16 16:11:28,111 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 9 states. [2019-09-16 16:11:28,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:28,343 INFO L93 Difference]: Finished difference Result 93 states and 115 transitions. [2019-09-16 16:11:28,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-16 16:11:28,344 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-09-16 16:11:28,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:28,347 INFO L225 Difference]: With dead ends: 93 [2019-09-16 16:11:28,348 INFO L226 Difference]: Without dead ends: 70 [2019-09-16 16:11:28,349 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2019-09-16 16:11:28,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-09-16 16:11:28,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 51. [2019-09-16 16:11:28,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-09-16 16:11:28,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2019-09-16 16:11:28,381 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 24 [2019-09-16 16:11:28,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:28,382 INFO L475 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2019-09-16 16:11:28,382 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 16:11:28,382 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2019-09-16 16:11:28,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-09-16 16:11:28,384 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:28,384 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:28,384 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:28,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:28,385 INFO L82 PathProgramCache]: Analyzing trace with hash -479010360, now seen corresponding path program 1 times [2019-09-16 16:11:28,385 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:28,385 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:28,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:28,388 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:11:28,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:28,748 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:28,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:11:28,749 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:11:28,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:28,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-16 16:11:28,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:11:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:28,978 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:11:28,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2019-09-16 16:11:28,979 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-16 16:11:28,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-16 16:11:28,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2019-09-16 16:11:28,981 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 18 states. [2019-09-16 16:11:30,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:30,321 INFO L93 Difference]: Finished difference Result 219 states and 277 transitions. [2019-09-16 16:11:30,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-09-16 16:11:30,322 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 28 [2019-09-16 16:11:30,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:30,325 INFO L225 Difference]: With dead ends: 219 [2019-09-16 16:11:30,325 INFO L226 Difference]: Without dead ends: 177 [2019-09-16 16:11:30,327 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=440, Invalid=1366, Unknown=0, NotChecked=0, Total=1806 [2019-09-16 16:11:30,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2019-09-16 16:11:30,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 121. [2019-09-16 16:11:30,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-09-16 16:11:30,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 151 transitions. [2019-09-16 16:11:30,342 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 151 transitions. Word has length 28 [2019-09-16 16:11:30,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:30,343 INFO L475 AbstractCegarLoop]: Abstraction has 121 states and 151 transitions. [2019-09-16 16:11:30,343 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-16 16:11:30,343 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 151 transitions. [2019-09-16 16:11:30,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-16 16:11:30,344 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:30,344 INFO L407 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:30,345 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:30,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:30,345 INFO L82 PathProgramCache]: Analyzing trace with hash -801997631, now seen corresponding path program 2 times [2019-09-16 16:11:30,345 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:30,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:30,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:30,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:30,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:30,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:11:30,442 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-16 16:11:30,474 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:11:30,498 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-16 16:11:30,498 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:11:30,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-16 16:11:30,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:11:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:30,582 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:11:30,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2019-09-16 16:11:30,583 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-16 16:11:30,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-16 16:11:30,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2019-09-16 16:11:30,584 INFO L87 Difference]: Start difference. First operand 121 states and 151 transitions. Second operand 15 states. [2019-09-16 16:11:30,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:30,672 INFO L93 Difference]: Finished difference Result 333 states and 419 transitions. [2019-09-16 16:11:30,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 16:11:30,672 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2019-09-16 16:11:30,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:30,676 INFO L225 Difference]: With dead ends: 333 [2019-09-16 16:11:30,676 INFO L226 Difference]: Without dead ends: 221 [2019-09-16 16:11:30,677 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=139, Unknown=0, NotChecked=0, Total=240 [2019-09-16 16:11:30,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2019-09-16 16:11:30,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 144. [2019-09-16 16:11:30,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-09-16 16:11:30,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 179 transitions. [2019-09-16 16:11:30,694 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 179 transitions. Word has length 32 [2019-09-16 16:11:30,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:30,695 INFO L475 AbstractCegarLoop]: Abstraction has 144 states and 179 transitions. [2019-09-16 16:11:30,695 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-16 16:11:30,695 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 179 transitions. [2019-09-16 16:11:30,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-09-16 16:11:30,696 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:30,696 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:30,696 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:30,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:30,697 INFO L82 PathProgramCache]: Analyzing trace with hash -850791622, now seen corresponding path program 3 times [2019-09-16 16:11:30,697 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:30,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:30,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:30,699 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:11:30,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-16 16:11:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-16 16:11:30,808 INFO L474 BasicCegarLoop]: Counterexample might be feasible [2019-09-16 16:11:30,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 04:11:30 BoogieIcfgContainer [2019-09-16 16:11:30,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 16:11:30,859 INFO L168 Benchmark]: Toolchain (without parser) took 5317.96 ms. Allocated memory was 141.6 MB in the beginning and 296.2 MB in the end (delta: 154.7 MB). Free memory was 88.4 MB in the beginning and 259.8 MB in the end (delta: -171.4 MB). Peak memory consumption was 120.3 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:30,863 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 107.4 MB in the beginning and 107.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 16:11:30,864 INFO L168 Benchmark]: CACSL2BoogieTranslator took 514.08 ms. Allocated memory was 141.6 MB in the beginning and 199.2 MB in the end (delta: 57.7 MB). Free memory was 88.2 MB in the beginning and 174.6 MB in the end (delta: -86.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:30,864 INFO L168 Benchmark]: Boogie Preprocessor took 88.96 ms. Allocated memory is still 199.2 MB. Free memory was 174.6 MB in the beginning and 172.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:30,865 INFO L168 Benchmark]: RCFGBuilder took 520.66 ms. Allocated memory is still 199.2 MB. Free memory was 172.3 MB in the beginning and 145.4 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:30,866 INFO L168 Benchmark]: TraceAbstraction took 4187.34 ms. Allocated memory was 199.2 MB in the beginning and 296.2 MB in the end (delta: 97.0 MB). Free memory was 144.8 MB in the beginning and 259.8 MB in the end (delta: -115.0 MB). Peak memory consumption was 119.0 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:30,872 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 107.4 MB in the beginning and 107.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 514.08 ms. Allocated memory was 141.6 MB in the beginning and 199.2 MB in the end (delta: 57.7 MB). Free memory was 88.2 MB in the beginning and 174.6 MB in the end (delta: -86.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.96 ms. Allocated memory is still 199.2 MB. Free memory was 174.6 MB in the beginning and 172.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 520.66 ms. Allocated memory is still 199.2 MB. Free memory was 172.3 MB in the beginning and 145.4 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4187.34 ms. Allocated memory was 199.2 MB in the beginning and 296.2 MB in the end (delta: 97.0 MB). Free memory was 144.8 MB in the beginning and 259.8 MB in the end (delta: -115.0 MB). Peak memory consumption was 119.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_real at line 96, overapproximation of someBinaryArithmeticDOUBLEoperation at line 98. Possible FailurePath: [L69] double a[50][50], b[50], x[50]; VAL [\old(a)=20009, \old(a)=20012, \old(b)=20015, \old(b)=20005, \old(x)=20006, \old(x)=20007, a={1:0}, b={-1:0}, x={2:0}] [L86] int i, j, nmax = 50, n = 5, chkerr; [L87] double eps, w; [L89] eps = 1.0e-6 [L91] i = 0 VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, n=5, nmax=50, x={2:0}] [L91] COND TRUE i <= n [L93] w = 0.0 [L94] j = 0 VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=0, n=5, nmax=50, w=0, x={2:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=0, n=5, nmax=50, w=0, x={2:0}] [L97] COND TRUE i == j [L97] EXPR a[i][j] [L97] a[i][j] *= 10.0 [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=1, n=5, nmax=50, x={2:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=1, n=5, nmax=50, x={2:0}] [L97] COND FALSE !(i == j) VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=1, n=5, nmax=50, x={2:0}] [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=2, n=5, nmax=50, x={2:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=2, n=5, nmax=50, x={2:0}] [L97] COND FALSE !(i == j) VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=2, n=5, nmax=50, x={2:0}] [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=3, n=5, nmax=50, x={2:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=3, n=5, nmax=50, x={2:0}] [L97] COND FALSE !(i == j) VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=3, n=5, nmax=50, x={2:0}] [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=4, n=5, nmax=50, x={2:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=4, n=5, nmax=50, x={2:0}] [L97] COND FALSE !(i == j) VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=4, n=5, nmax=50, x={2:0}] [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=5, n=5, nmax=50, x={2:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=5, n=5, nmax=50, x={2:0}] [L97] COND FALSE !(i == j) VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=5, n=5, nmax=50, x={2:0}] [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=6, n=5, nmax=50, x={2:0}] [L94] COND FALSE !(j <= n) VAL [a={1:0}, b={-1:0}, eps=1/1000000, i=0, j=6, n=5, nmax=50, x={2:0}] [L100] CALL __VERIFIER_assert(i==2) VAL [\old(cond)=0, a={1:0}, b={-1:0}, x={2:0}] [L4] COND TRUE !(cond) VAL [\old(cond)=0, a={1:0}, b={-1:0}, cond=0, x={2:0}] [L5] __VERIFIER_error() VAL [\old(cond)=0, a={1:0}, b={-1:0}, cond=0, x={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. UNSAFE Result, 4.1s OverallTime, 8 OverallIterations, 6 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 178 SDtfs, 397 SDslu, 459 SDs, 0 SdLazy, 460 SolverSat, 161 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 194 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 161 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 300 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 29688 SizeOfPredicates, 10 NumberOfNonLiveVariables, 578 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 15/190 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...