java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --traceabstraction.dump.automata.to.the.following.directory dump --rcfgbuilder.size.of.a.code.block SingleStatement --cacsl2boogietranslator.bitprecise.bitfields false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c5b1954-m [2018-10-10 14:53:04,523 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 14:53:04,525 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 14:53:04,536 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 14:53:04,537 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 14:53:04,538 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 14:53:04,539 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 14:53:04,541 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 14:53:04,542 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 14:53:04,543 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 14:53:04,544 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 14:53:04,544 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 14:53:04,545 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 14:53:04,546 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 14:53:04,547 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 14:53:04,548 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 14:53:04,549 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 14:53:04,551 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 14:53:04,553 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 14:53:04,554 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 14:53:04,555 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 14:53:04,557 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 14:53:04,559 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 14:53:04,559 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 14:53:04,560 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 14:53:04,561 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 14:53:04,562 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 14:53:04,562 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 14:53:04,563 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 14:53:04,564 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 14:53:04,565 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 14:53:04,565 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-10 14:53:04,565 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-10 14:53:04,566 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-10 14:53:04,567 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-10 14:53:04,567 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-10 14:53:04,568 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-10-10 14:53:04,582 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 14:53:04,583 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 14:53:04,584 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-10 14:53:04,584 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-10 14:53:04,584 INFO L133 SettingsManager]: * Use SBE=true [2018-10-10 14:53:04,584 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-10 14:53:04,585 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-10 14:53:04,585 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-10 14:53:04,585 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-10 14:53:04,585 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-10 14:53:04,585 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-10 14:53:04,586 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-10 14:53:04,586 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-10 14:53:04,586 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-10 14:53:04,586 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-10 14:53:04,586 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-10 14:53:04,587 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 14:53:04,587 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-10 14:53:04,587 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-10 14:53:04,587 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-10 14:53:04,587 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 14:53:04,588 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 14:53:04,588 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-10 14:53:04,588 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-10 14:53:04,588 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-10 14:53:04,588 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Dump automata to the following directory -> dump Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Bitprecise bitfields -> false [2018-10-10 14:53:04,633 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 14:53:04,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 14:53:04,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 14:53:04,651 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-10 14:53:04,651 INFO L276 PluginConnector]: CDTParser initialized [2018-10-10 14:53:04,652 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-10-10 14:53:04,952 INFO L217 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4c54b5f5/d359ba63303946c6b3f4ff71be22f490/FLAG1ef2ffd85 [2018-10-10 14:53:05,165 INFO L289 CDTParser]: Found 1 translation units. [2018-10-10 14:53:05,165 INFO L157 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-10-10 14:53:05,173 INFO L337 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4c54b5f5/d359ba63303946c6b3f4ff71be22f490/FLAG1ef2ffd85 [2018-10-10 14:53:05,194 INFO L345 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4c54b5f5/d359ba63303946c6b3f4ff71be22f490 [2018-10-10 14:53:05,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 14:53:05,205 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-10 14:53:05,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-10 14:53:05,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-10 14:53:05,210 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-10 14:53:05,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 02:53:05" (1/1) ... [2018-10-10 14:53:05,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76034fe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:53:05, skipping insertion in model container [2018-10-10 14:53:05,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 02:53:05" (1/1) ... [2018-10-10 14:53:05,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-10 14:53:05,251 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-10 14:53:05,422 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 14:53:05,432 INFO L189 MainTranslator]: Completed pre-run [2018-10-10 14:53:05,454 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 14:53:05,476 INFO L193 MainTranslator]: Completed translation [2018-10-10 14:53:05,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:53:05 WrapperNode [2018-10-10 14:53:05,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-10 14:53:05,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-10 14:53:05,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-10 14:53:05,478 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-10 14:53:05,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:53:05" (1/1) ... [2018-10-10 14:53:05,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:53:05" (1/1) ... [2018-10-10 14:53:05,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-10 14:53:05,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 14:53:05,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 14:53:05,540 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 14:53:05,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:53:05" (1/1) ... [2018-10-10 14:53:05,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:53:05" (1/1) ... [2018-10-10 14:53:05,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:53:05" (1/1) ... [2018-10-10 14:53:05,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:53:05" (1/1) ... [2018-10-10 14:53:05,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:53:05" (1/1) ... [2018-10-10 14:53:05,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:53:05" (1/1) ... [2018-10-10 14:53:05,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:53:05" (1/1) ... [2018-10-10 14:53:05,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 14:53:05,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 14:53:05,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 14:53:05,570 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 14:53:05,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:53:05" (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 [2018-10-10 14:53:05,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 14:53:05,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 14:53:06,515 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 14:53:06,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 02:53:06 BoogieIcfgContainer [2018-10-10 14:53:06,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 14:53:06,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 14:53:06,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 14:53:06,521 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 14:53:06,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 02:53:05" (1/3) ... [2018-10-10 14:53:06,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48791553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 02:53:06, skipping insertion in model container [2018-10-10 14:53:06,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:53:05" (2/3) ... [2018-10-10 14:53:06,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48791553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 02:53:06, skipping insertion in model container [2018-10-10 14:53:06,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 02:53:06" (3/3) ... [2018-10-10 14:53:06,526 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-10-10 14:53:06,536 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-10 14:53:06,547 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-10-10 14:53:06,568 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2018-10-10 14:53:06,601 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 14:53:06,602 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 14:53:06,602 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 14:53:06,602 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-10 14:53:06,603 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 14:53:06,603 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 14:53:06,603 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 14:53:06,603 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 14:53:06,603 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 14:53:06,625 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2018-10-10 14:53:06,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-10 14:53:06,635 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:53:06,636 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:53:06,638 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:53:06,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:53:06,645 INFO L82 PathProgramCache]: Analyzing trace with hash -543196223, now seen corresponding path program 1 times [2018-10-10 14:53:06,647 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:53:06,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:53:06,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:06,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:53:06,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:53:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:53:06,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:53:06,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-10 14:53:06,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-10 14:53:06,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-10 14:53:06,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-10 14:53:06,837 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 2 states. [2018-10-10 14:53:06,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:53:06,864 INFO L93 Difference]: Finished difference Result 147 states and 150 transitions. [2018-10-10 14:53:06,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-10 14:53:06,865 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 43 [2018-10-10 14:53:06,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:53:06,879 INFO L225 Difference]: With dead ends: 147 [2018-10-10 14:53:06,879 INFO L226 Difference]: Without dead ends: 142 [2018-10-10 14:53:06,881 INFO L605 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 [2018-10-10 14:53:06,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-10-10 14:53:06,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-10-10 14:53:06,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-10-10 14:53:06,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 145 transitions. [2018-10-10 14:53:06,932 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 145 transitions. Word has length 43 [2018-10-10 14:53:06,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:53:06,933 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 145 transitions. [2018-10-10 14:53:06,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-10 14:53:06,933 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 145 transitions. [2018-10-10 14:53:06,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-10 14:53:06,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:53:06,935 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:53:06,936 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:53:06,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:53:06,936 INFO L82 PathProgramCache]: Analyzing trace with hash -959576323, now seen corresponding path program 1 times [2018-10-10 14:53:06,936 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:53:06,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:53:06,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:06,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:53:06,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:53:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:53:07,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:53:07,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 14:53:07,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 14:53:07,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 14:53:07,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 14:53:07,082 INFO L87 Difference]: Start difference. First operand 142 states and 145 transitions. Second operand 3 states. [2018-10-10 14:53:07,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:53:07,272 INFO L93 Difference]: Finished difference Result 230 states and 234 transitions. [2018-10-10 14:53:07,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 14:53:07,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2018-10-10 14:53:07,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:53:07,281 INFO L225 Difference]: With dead ends: 230 [2018-10-10 14:53:07,281 INFO L226 Difference]: Without dead ends: 230 [2018-10-10 14:53:07,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 14:53:07,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-10-10 14:53:07,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 146. [2018-10-10 14:53:07,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-10 14:53:07,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 149 transitions. [2018-10-10 14:53:07,304 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 149 transitions. Word has length 44 [2018-10-10 14:53:07,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:53:07,305 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 149 transitions. [2018-10-10 14:53:07,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 14:53:07,305 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 149 transitions. [2018-10-10 14:53:07,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-10 14:53:07,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:53:07,307 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:53:07,308 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:53:07,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:53:07,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1425574302, now seen corresponding path program 1 times [2018-10-10 14:53:07,308 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:53:07,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:53:07,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:07,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:53:07,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:53:07,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:53:07,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:53:07,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-10 14:53:07,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-10 14:53:07,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-10 14:53:07,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-10 14:53:07,484 INFO L87 Difference]: Start difference. First operand 146 states and 149 transitions. Second operand 6 states. [2018-10-10 14:53:07,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:53:07,682 INFO L93 Difference]: Finished difference Result 252 states and 258 transitions. [2018-10-10 14:53:07,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-10 14:53:07,683 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2018-10-10 14:53:07,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:53:07,686 INFO L225 Difference]: With dead ends: 252 [2018-10-10 14:53:07,686 INFO L226 Difference]: Without dead ends: 252 [2018-10-10 14:53:07,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-10 14:53:07,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-10-10 14:53:07,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 149. [2018-10-10 14:53:07,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-10 14:53:07,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 153 transitions. [2018-10-10 14:53:07,700 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 153 transitions. Word has length 51 [2018-10-10 14:53:07,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:53:07,700 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 153 transitions. [2018-10-10 14:53:07,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-10 14:53:07,701 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 153 transitions. [2018-10-10 14:53:07,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-10 14:53:07,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:53:07,703 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:53:07,703 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:53:07,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:53:07,704 INFO L82 PathProgramCache]: Analyzing trace with hash 647504389, now seen corresponding path program 1 times [2018-10-10 14:53:07,704 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:53:07,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:53:07,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:07,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:53:07,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:53:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:53:07,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:53:07,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-10 14:53:07,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-10 14:53:07,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-10 14:53:07,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-10 14:53:07,857 INFO L87 Difference]: Start difference. First operand 149 states and 153 transitions. Second operand 8 states. [2018-10-10 14:53:08,302 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-10 14:53:08,762 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-10 14:53:09,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:53:09,480 INFO L93 Difference]: Finished difference Result 195 states and 201 transitions. [2018-10-10 14:53:09,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-10 14:53:09,481 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2018-10-10 14:53:09,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:53:09,483 INFO L225 Difference]: With dead ends: 195 [2018-10-10 14:53:09,484 INFO L226 Difference]: Without dead ends: 195 [2018-10-10 14:53:09,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2018-10-10 14:53:09,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-10 14:53:09,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 148. [2018-10-10 14:53:09,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-10 14:53:09,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 152 transitions. [2018-10-10 14:53:09,495 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 152 transitions. Word has length 54 [2018-10-10 14:53:09,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:53:09,495 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 152 transitions. [2018-10-10 14:53:09,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-10 14:53:09,496 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 152 transitions. [2018-10-10 14:53:09,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-10 14:53:09,497 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:53:09,497 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:53:09,498 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:53:09,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:53:09,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1402200319, now seen corresponding path program 1 times [2018-10-10 14:53:09,499 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:53:09,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:53:09,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:09,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:53:09,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:53:09,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:53:09,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:53:09,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-10 14:53:09,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 14:53:09,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 14:53:09,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-10-10 14:53:09,871 INFO L87 Difference]: Start difference. First operand 148 states and 152 transitions. Second operand 11 states. [2018-10-10 14:53:11,014 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-10-10 14:53:11,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:53:11,048 INFO L93 Difference]: Finished difference Result 278 states and 286 transitions. [2018-10-10 14:53:11,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-10 14:53:11,048 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2018-10-10 14:53:11,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:53:11,050 INFO L225 Difference]: With dead ends: 278 [2018-10-10 14:53:11,050 INFO L226 Difference]: Without dead ends: 278 [2018-10-10 14:53:11,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2018-10-10 14:53:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-10-10 14:53:11,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 147. [2018-10-10 14:53:11,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-10 14:53:11,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 151 transitions. [2018-10-10 14:53:11,059 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 151 transitions. Word has length 55 [2018-10-10 14:53:11,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:53:11,060 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 151 transitions. [2018-10-10 14:53:11,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 14:53:11,060 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 151 transitions. [2018-10-10 14:53:11,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-10 14:53:11,062 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:53:11,062 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:53:11,063 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:53:11,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:53:11,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1473434202, now seen corresponding path program 1 times [2018-10-10 14:53:11,063 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:53:11,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:53:11,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:11,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:53:11,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:53:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:53:11,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:53:11,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-10 14:53:11,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-10 14:53:11,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-10 14:53:11,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-10 14:53:11,181 INFO L87 Difference]: Start difference. First operand 147 states and 151 transitions. Second operand 5 states. [2018-10-10 14:53:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:53:11,251 INFO L93 Difference]: Finished difference Result 166 states and 169 transitions. [2018-10-10 14:53:11,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-10 14:53:11,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2018-10-10 14:53:11,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:53:11,255 INFO L225 Difference]: With dead ends: 166 [2018-10-10 14:53:11,255 INFO L226 Difference]: Without dead ends: 166 [2018-10-10 14:53:11,255 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-10 14:53:11,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-10-10 14:53:11,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 147. [2018-10-10 14:53:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-10 14:53:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 150 transitions. [2018-10-10 14:53:11,261 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 150 transitions. Word has length 58 [2018-10-10 14:53:11,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:53:11,262 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 150 transitions. [2018-10-10 14:53:11,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-10 14:53:11,262 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 150 transitions. [2018-10-10 14:53:11,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-10 14:53:11,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:53:11,264 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:53:11,265 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:53:11,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:53:11,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1645601647, now seen corresponding path program 1 times [2018-10-10 14:53:11,266 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:53:11,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:53:11,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:11,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:53:11,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:53:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:53:11,381 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-10 14:53:11,381 INFO L227 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 [2018-10-10 14:53:11,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:53:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:53:11,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 14:53:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:53:11,502 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 14:53:11,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-10 14:53:11,543 WARN L240 PathProgramDumper]: Writing path program to file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/dump/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c_7.bpl [2018-10-10 14:53:11,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-10 14:53:11,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-10 14:53:11,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-10 14:53:11,547 INFO L87 Difference]: Start difference. First operand 147 states and 150 transitions. Second operand 5 states. [2018-10-10 14:53:11,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:53:11,693 INFO L93 Difference]: Finished difference Result 261 states and 267 transitions. [2018-10-10 14:53:11,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-10 14:53:11,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2018-10-10 14:53:11,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:53:11,697 INFO L225 Difference]: With dead ends: 261 [2018-10-10 14:53:11,697 INFO L226 Difference]: Without dead ends: 261 [2018-10-10 14:53:11,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-10 14:53:11,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-10-10 14:53:11,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 165. [2018-10-10 14:53:11,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-10 14:53:11,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 169 transitions. [2018-10-10 14:53:11,704 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 169 transitions. Word has length 69 [2018-10-10 14:53:11,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:53:11,705 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 169 transitions. [2018-10-10 14:53:11,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-10 14:53:11,705 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 169 transitions. [2018-10-10 14:53:11,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-10 14:53:11,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:53:11,708 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:53:11,708 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:53:11,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:53:11,709 INFO L82 PathProgramCache]: Analyzing trace with hash 668948149, now seen corresponding path program 1 times [2018-10-10 14:53:11,709 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:53:11,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:53:11,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:11,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:53:11,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:53:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:53:11,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-10 14:53:11,842 INFO L227 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 [2018-10-10 14:53:11,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:53:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:53:11,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 14:53:12,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:53:12,053 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 14:53:12,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-10-10 14:53:12,078 WARN L240 PathProgramDumper]: Writing path program to file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/dump/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c_8.bpl [2018-10-10 14:53:12,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-10 14:53:12,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-10 14:53:12,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-10-10 14:53:12,079 INFO L87 Difference]: Start difference. First operand 165 states and 169 transitions. Second operand 10 states. [2018-10-10 14:53:12,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:53:12,238 INFO L93 Difference]: Finished difference Result 184 states and 187 transitions. [2018-10-10 14:53:12,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-10 14:53:12,245 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 76 [2018-10-10 14:53:12,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:53:12,246 INFO L225 Difference]: With dead ends: 184 [2018-10-10 14:53:12,247 INFO L226 Difference]: Without dead ends: 184 [2018-10-10 14:53:12,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-10-10 14:53:12,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-10 14:53:12,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 165. [2018-10-10 14:53:12,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-10 14:53:12,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 168 transitions. [2018-10-10 14:53:12,254 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 168 transitions. Word has length 76 [2018-10-10 14:53:12,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:53:12,254 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 168 transitions. [2018-10-10 14:53:12,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-10 14:53:12,257 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 168 transitions. [2018-10-10 14:53:12,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-10 14:53:12,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:53:12,263 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:53:12,264 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:53:12,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:53:12,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1711852288, now seen corresponding path program 2 times [2018-10-10 14:53:12,265 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:53:12,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:53:12,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:12,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:53:12,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:53:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:53:12,651 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:53:12,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-10 14:53:12,651 INFO L227 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 [2018-10-10 14:53:12,659 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-10 14:53:12,688 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-10 14:53:12,688 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-10 14:53:12,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 14:53:12,783 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-10 14:53:12,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 14:53:12,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2018-10-10 14:53:12,805 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-10 14:53:12,809 WARN L205 ceAbstractionStarter]: Timeout [2018-10-10 14:53:12,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 02:53:12 BoogieIcfgContainer [2018-10-10 14:53:12,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 14:53:12,811 INFO L168 Benchmark]: Toolchain (without parser) took 7606.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -363.8 MB). Peak memory consumption was 396.5 MB. Max. memory is 7.1 GB. [2018-10-10 14:53:12,812 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 14:53:12,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2018-10-10 14:53:12,814 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 14:53:12,814 INFO L168 Benchmark]: Boogie Preprocessor took 29.98 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 14:53:12,815 INFO L168 Benchmark]: RCFGBuilder took 946.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -799.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-10-10 14:53:12,816 INFO L168 Benchmark]: TraceAbstraction took 6292.93 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 422.4 MB). Peak memory consumption was 422.4 MB. Max. memory is 7.1 GB. [2018-10-10 14:53:12,821 INFO L336 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 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 270.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.98 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 946.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -799.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6292.93 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 422.4 MB). Peak memory consumption was 422.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 9). - TimeoutResultAtElement [Line: 16]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 16). Cancelled while PathProgramDumpController was trying to verify (iteration 9). - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 21). Cancelled while PathProgramDumpController was trying to verify (iteration 9). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 9). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 9). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 9). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 9). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 9). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 147 locations, 8 error locations. TIMEOUT Result, 6.2s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1214 SDtfs, 3218 SDslu, 2262 SDs, 0 SdLazy, 562 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 220 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred 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, 8 MinimizatonAttempts, 499 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 595 NumberOfCodeBlocks, 595 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 585 ConstructedInterpolants, 0 QuantifiedInterpolants, 83681 SizeOfPredicates, 7 NumberOfNonLiveVariables, 249 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 0/10 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Received shutdown request...