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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength_true-valid-memsafety.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c5b1954-m [2018-10-10 11:25:01,751 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 11:25:01,753 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 11:25:01,765 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 11:25:01,766 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 11:25:01,767 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 11:25:01,768 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 11:25:01,770 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 11:25:01,772 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 11:25:01,773 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 11:25:01,774 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 11:25:01,774 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 11:25:01,775 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 11:25:01,776 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 11:25:01,777 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 11:25:01,778 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 11:25:01,779 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 11:25:01,781 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 11:25:01,783 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 11:25:01,785 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 11:25:01,786 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 11:25:01,788 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 11:25:01,790 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 11:25:01,791 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 11:25:01,791 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 11:25:01,792 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 11:25:01,793 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 11:25:01,794 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 11:25:01,795 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 11:25:01,796 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 11:25:01,796 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 11:25:01,797 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-10 11:25:01,800 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 11:25:01,835 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 11:25:01,835 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 11:25:01,836 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-10 11:25:01,839 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-10 11:25:01,839 INFO L133 SettingsManager]: * Use SBE=true [2018-10-10 11:25:01,840 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-10 11:25:01,840 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-10 11:25:01,840 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-10 11:25:01,840 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-10 11:25:01,841 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-10 11:25:01,841 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-10 11:25:01,841 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-10 11:25:01,841 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-10 11:25:01,841 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-10 11:25:01,842 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-10 11:25:01,844 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-10 11:25:01,844 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 11:25:01,844 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-10 11:25:01,844 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-10 11:25:01,844 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-10 11:25:01,846 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 11:25:01,846 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 11:25:01,846 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-10 11:25:01,846 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-10 11:25:01,847 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-10 11:25:01,847 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 [2018-10-10 11:25:01,914 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 11:25:01,934 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 11:25:01,938 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 11:25:01,940 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-10 11:25:01,940 INFO L276 PluginConnector]: CDTParser initialized [2018-10-10 11:25:01,941 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength_true-valid-memsafety.c [2018-10-10 11:25:02,254 INFO L217 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f5d38498/d2ef1bf09bc04441b83a92f16d4dbce8/FLAG97b43ec6b [2018-10-10 11:25:02,488 INFO L289 CDTParser]: Found 1 translation units. [2018-10-10 11:25:02,489 INFO L157 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength_true-valid-memsafety.c [2018-10-10 11:25:02,496 INFO L337 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f5d38498/d2ef1bf09bc04441b83a92f16d4dbce8/FLAG97b43ec6b [2018-10-10 11:25:02,517 INFO L345 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f5d38498/d2ef1bf09bc04441b83a92f16d4dbce8 [2018-10-10 11:25:02,528 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 11:25:02,530 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-10 11:25:02,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-10 11:25:02,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-10 11:25:02,535 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-10 11:25:02,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:25:02" (1/1) ... [2018-10-10 11:25:02,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0a62be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:25:02, skipping insertion in model container [2018-10-10 11:25:02,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:25:02" (1/1) ... [2018-10-10 11:25:02,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-10 11:25:02,572 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-10 11:25:02,736 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 11:25:02,747 INFO L189 MainTranslator]: Completed pre-run [2018-10-10 11:25:02,768 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 11:25:02,786 INFO L193 MainTranslator]: Completed translation [2018-10-10 11:25:02,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:25:02 WrapperNode [2018-10-10 11:25:02,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-10 11:25:02,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-10 11:25:02,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-10 11:25:02,788 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-10 11:25:02,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:25:02" (1/1) ... [2018-10-10 11:25:02,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:25:02" (1/1) ... [2018-10-10 11:25:02,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-10 11:25:02,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 11:25:02,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 11:25:02,834 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 11:25:02,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:25:02" (1/1) ... [2018-10-10 11:25:02,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:25:02" (1/1) ... [2018-10-10 11:25:02,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:25:02" (1/1) ... [2018-10-10 11:25:02,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:25:02" (1/1) ... [2018-10-10 11:25:02,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:25:02" (1/1) ... [2018-10-10 11:25:02,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:25:02" (1/1) ... [2018-10-10 11:25:02,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:25:02" (1/1) ... [2018-10-10 11:25:02,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 11:25:02,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 11:25:02,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 11:25:02,863 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 11:25:02,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:25:02" (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 11:25:02,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 11:25:02,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 11:25:03,459 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 11:25:03,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:25:03 BoogieIcfgContainer [2018-10-10 11:25:03,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 11:25:03,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 11:25:03,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 11:25:03,466 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 11:25:03,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 11:25:02" (1/3) ... [2018-10-10 11:25:03,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2187b2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:25:03, skipping insertion in model container [2018-10-10 11:25:03,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:25:02" (2/3) ... [2018-10-10 11:25:03,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2187b2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:25:03, skipping insertion in model container [2018-10-10 11:25:03,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:25:03" (3/3) ... [2018-10-10 11:25:03,471 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_true-valid-memsafety.c [2018-10-10 11:25:03,482 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-10 11:25:03,495 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-10-10 11:25:03,516 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2018-10-10 11:25:03,549 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 11:25:03,552 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 11:25:03,552 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 11:25:03,553 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-10 11:25:03,553 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 11:25:03,553 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 11:25:03,553 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 11:25:03,553 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 11:25:03,553 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 11:25:03,572 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-10-10 11:25:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-10 11:25:03,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:25:03,582 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:25:03,584 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK]=== [2018-10-10 11:25:03,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:25:03,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1805952520, now seen corresponding path program 1 times [2018-10-10 11:25:03,596 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 11:25:03,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 11:25:03,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:25:03,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:25:03,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:25:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:25:03,815 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 11:25:03,818 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:25:03,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-10 11:25:03,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-10 11:25:03,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-10 11:25:03,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-10 11:25:03,838 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2018-10-10 11:25:04,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:25:04,116 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2018-10-10 11:25:04,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-10 11:25:04,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-10-10 11:25:04,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:25:04,131 INFO L225 Difference]: With dead ends: 89 [2018-10-10 11:25:04,132 INFO L226 Difference]: Without dead ends: 81 [2018-10-10 11:25:04,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-10 11:25:04,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-10 11:25:04,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 39. [2018-10-10 11:25:04,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-10 11:25:04,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-10-10 11:25:04,186 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 7 [2018-10-10 11:25:04,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:25:04,186 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-10-10 11:25:04,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-10 11:25:04,187 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-10-10 11:25:04,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-10 11:25:04,187 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:25:04,188 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:25:04,191 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK]=== [2018-10-10 11:25:04,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:25:04,192 INFO L82 PathProgramCache]: Analyzing trace with hash 353536214, now seen corresponding path program 1 times [2018-10-10 11:25:04,192 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 11:25:04,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 11:25:04,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:25:04,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:25:04,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:25:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:25:04,312 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 11:25:04,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:25:04,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 11:25:04,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-10 11:25:04,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-10 11:25:04,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-10 11:25:04,315 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 4 states. [2018-10-10 11:25:04,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:25:04,544 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-10-10 11:25:04,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-10 11:25:04,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-10-10 11:25:04,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:25:04,546 INFO L225 Difference]: With dead ends: 40 [2018-10-10 11:25:04,546 INFO L226 Difference]: Without dead ends: 40 [2018-10-10 11:25:04,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-10 11:25:04,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-10 11:25:04,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2018-10-10 11:25:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-10 11:25:04,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-10-10 11:25:04,552 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 9 [2018-10-10 11:25:04,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:25:04,553 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-10-10 11:25:04,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-10 11:25:04,553 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-10-10 11:25:04,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-10 11:25:04,554 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:25:04,554 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:25:04,554 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK]=== [2018-10-10 11:25:04,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:25:04,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1925279186, now seen corresponding path program 1 times [2018-10-10 11:25:04,555 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 11:25:04,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 11:25:04,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:25:04,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:25:04,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:25:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:25:04,685 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 11:25:04,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:25:04,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 11:25:04,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-10 11:25:04,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-10 11:25:04,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-10 11:25:04,687 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 4 states. [2018-10-10 11:25:04,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:25:04,924 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2018-10-10 11:25:04,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-10 11:25:04,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-10 11:25:04,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:25:04,930 INFO L225 Difference]: With dead ends: 71 [2018-10-10 11:25:04,930 INFO L226 Difference]: Without dead ends: 71 [2018-10-10 11:25:04,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-10 11:25:04,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-10 11:25:04,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 42. [2018-10-10 11:25:04,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-10 11:25:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2018-10-10 11:25:04,937 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 10 [2018-10-10 11:25:04,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:25:04,937 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2018-10-10 11:25:04,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-10 11:25:04,938 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2018-10-10 11:25:04,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-10 11:25:04,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:25:04,939 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:25:04,939 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK]=== [2018-10-10 11:25:04,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:25:04,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1869190066, now seen corresponding path program 1 times [2018-10-10 11:25:04,940 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 11:25:04,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 11:25:04,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:25:04,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:25:04,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:25:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:25:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-10 11:25:05,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:25:05,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 11:25:05,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-10 11:25:05,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-10 11:25:05,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-10 11:25:05,067 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 4 states. [2018-10-10 11:25:05,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:25:05,138 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2018-10-10 11:25:05,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-10 11:25:05,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-10-10 11:25:05,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:25:05,141 INFO L225 Difference]: With dead ends: 73 [2018-10-10 11:25:05,141 INFO L226 Difference]: Without dead ends: 73 [2018-10-10 11:25:05,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-10 11:25:05,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-10 11:25:05,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 45. [2018-10-10 11:25:05,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-10 11:25:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-10-10 11:25:05,149 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 16 [2018-10-10 11:25:05,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:25:05,150 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-10-10 11:25:05,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-10 11:25:05,150 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-10-10 11:25:05,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-10 11:25:05,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:25:05,151 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:25:05,152 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK]=== [2018-10-10 11:25:05,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:25:05,152 INFO L82 PathProgramCache]: Analyzing trace with hash 2109362049, now seen corresponding path program 1 times [2018-10-10 11:25:05,152 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 11:25:05,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 11:25:05,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:25:05,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:25:05,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:25:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:25:05,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-10 11:25:05,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:25:05,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 11:25:05,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-10 11:25:05,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-10 11:25:05,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-10 11:25:05,229 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 4 states. [2018-10-10 11:25:05,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:25:05,354 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2018-10-10 11:25:05,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-10 11:25:05,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-10-10 11:25:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:25:05,356 INFO L225 Difference]: With dead ends: 58 [2018-10-10 11:25:05,356 INFO L226 Difference]: Without dead ends: 58 [2018-10-10 11:25:05,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-10 11:25:05,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-10 11:25:05,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 44. [2018-10-10 11:25:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-10 11:25:05,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2018-10-10 11:25:05,363 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2018-10-10 11:25:05,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:25:05,364 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2018-10-10 11:25:05,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-10 11:25:05,364 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2018-10-10 11:25:05,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-10 11:25:05,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:25:05,365 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:25:05,366 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK]=== [2018-10-10 11:25:05,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:25:05,366 INFO L82 PathProgramCache]: Analyzing trace with hash 2110317252, now seen corresponding path program 1 times [2018-10-10 11:25:05,366 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 11:25:05,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 11:25:05,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:25:05,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:25:05,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:25:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:25:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-10 11:25:05,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-10 11:25:05,478 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 11:25:05,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:25:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:25:05,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:25:05,605 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-10 11:25:05,607 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 11:25:05,632 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 11:25:05,633 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-10-10 11:25:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-10 11:25:05,678 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 11:25:05,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-10 11:25:05,719 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: cannot bring into simultaneous update form, |v_ULTIMATE.start_main_~#b~0.base_1| has two outvars in equality [(= |v_ULTIMATE.start_main_old_#valid_1| |v_#valid_4|), (= |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1| 0), (not (= 0 |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|)), (= |v_#length_1| (store |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| |v_ULTIMATE.start_#Ultimate.alloc_~size_1|)), (= 0 (select |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|)), (= |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1| |v_#length_2|), (= (store |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| 1) |v_#valid_3|), (= |v_ULTIMATE.start_main_~#b~0.base_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|), (= |v_ULTIMATE.start_main_~#b~0.offset_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1|), (= |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_#valid_4|), (= |v_ULTIMATE.start_#Ultimate.alloc_~size_1| 400), (= v_ULTIMATE.start_main_~i~1_2 0)] at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.computeSubstitutionMapping(SimultaneousUpdate.java:174) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.extractUpdateRhs(SimultaneousUpdate.java:154) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.computeSubstitutionMapping(SimultaneousUpdate.java:171) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.extractUpdateRhs(SimultaneousUpdate.java:154) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.(SimultaneousUpdate.java:104) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.addStatementsAndVariables(PathProgramDumper.java:634) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.constructTransitionStatements(PathProgramDumper.java:560) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.processTransition(PathProgramDumper.java:521) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.constructProcedureStatements(PathProgramDumper.java:489) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.constructNewImplementation(PathProgramDumper.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.(PathProgramDumper.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumpController.doDump(PathProgramDumpController.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumpController.reportPathProgram(PathProgramDumpController.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-10 11:25:05,726 INFO L168 Benchmark]: Toolchain (without parser) took 3197.53 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -652.2 MB). Peak memory consumption was 68.7 MB. Max. memory is 7.1 GB. [2018-10-10 11:25:05,729 INFO L168 Benchmark]: CDTParser took 0.26 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 11:25:05,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.76 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-10 11:25:05,731 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.60 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 11:25:05,732 INFO L168 Benchmark]: Boogie Preprocessor took 28.61 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 11:25:05,732 INFO L168 Benchmark]: RCFGBuilder took 597.16 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -767.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-10-10 11:25:05,735 INFO L168 Benchmark]: TraceAbstraction took 2264.63 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.3 MB). Peak memory consumption was 104.3 MB. Max. memory is 7.1 GB. [2018-10-10 11:25:05,745 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 256.76 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.60 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 28.61 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 597.16 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -767.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2264.63 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.3 MB). Peak memory consumption was 104.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalArgumentException: cannot bring into simultaneous update form, |v_ULTIMATE.start_main_~#b~0.base_1| has two outvars in equality [(= |v_ULTIMATE.start_main_old_#valid_1| |v_#valid_4|), (= |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1| 0), (not (= 0 |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|)), (= |v_#length_1| (store |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| |v_ULTIMATE.start_#Ultimate.alloc_~size_1|)), (= 0 (select |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|)), (= |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1| |v_#length_2|), (= (store |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| 1) |v_#valid_3|), (= |v_ULTIMATE.start_main_~#b~0.base_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|), (= |v_ULTIMATE.start_main_~#b~0.offset_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1|), (= |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_#valid_4|), (= |v_ULTIMATE.start_#Ultimate.alloc_~size_1| 400), (= v_ULTIMATE.start_main_~i~1_2 0)] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: cannot bring into simultaneous update form, |v_ULTIMATE.start_main_~#b~0.base_1| has two outvars in equality [(= |v_ULTIMATE.start_main_old_#valid_1| |v_#valid_4|), (= |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1| 0), (not (= 0 |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|)), (= |v_#length_1| (store |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| |v_ULTIMATE.start_#Ultimate.alloc_~size_1|)), (= 0 (select |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|)), (= |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1| |v_#length_2|), (= (store |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| 1) |v_#valid_3|), (= |v_ULTIMATE.start_main_~#b~0.base_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|), (= |v_ULTIMATE.start_main_~#b~0.offset_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1|), (= |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_#valid_4|), (= |v_ULTIMATE.start_#Ultimate.alloc_~size_1| 400), (= v_ULTIMATE.start_main_~i~1_2 0)]: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.computeSubstitutionMapping(SimultaneousUpdate.java:174) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...