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/array-memsafety/openbsd_cstrnlen-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c5b1954-m [2018-10-10 14:42:30,471 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 14:42:30,473 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 14:42:30,491 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 14:42:30,491 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 14:42:30,493 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 14:42:30,496 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 14:42:30,499 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 14:42:30,502 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 14:42:30,503 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 14:42:30,505 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 14:42:30,505 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 14:42:30,506 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 14:42:30,508 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 14:42:30,509 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 14:42:30,510 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 14:42:30,511 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 14:42:30,513 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 14:42:30,515 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 14:42:30,516 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 14:42:30,518 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 14:42:30,519 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 14:42:30,521 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 14:42:30,531 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 14:42:30,546 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 14:42:30,546 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 14:42:30,547 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-10 14:42:30,547 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-10 14:42:30,548 INFO L133 SettingsManager]: * Use SBE=true [2018-10-10 14:42:30,548 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-10 14:42:30,548 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-10 14:42:30,548 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-10 14:42:30,549 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-10 14:42:30,549 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-10 14:42:30,549 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-10 14:42:30,549 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-10 14:42:30,549 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-10 14:42:30,550 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-10 14:42:30,550 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-10 14:42:30,550 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-10 14:42:30,550 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 14:42:30,550 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-10 14:42:30,551 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-10 14:42:30,551 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-10 14:42:30,551 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 14:42:30,551 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 14:42:30,552 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-10 14:42:30,552 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-10 14:42:30,552 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-10 14:42:30,552 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 14:42:30,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 14:42:30,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 14:42:30,625 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 14:42:30,626 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-10 14:42:30,627 INFO L276 PluginConnector]: CDTParser initialized [2018-10-10 14:42:30,628 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrnlen-alloca_true-valid-memsafety_true-termination.i [2018-10-10 14:42:30,948 INFO L217 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/892fc868c/0b4cab259ea9423e94eb643c789c12b9/FLAG7412c1dff [2018-10-10 14:42:31,209 INFO L289 CDTParser]: Found 1 translation units. [2018-10-10 14:42:31,210 INFO L157 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-memsafety/openbsd_cstrnlen-alloca_true-valid-memsafety_true-termination.i [2018-10-10 14:42:31,224 INFO L337 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/892fc868c/0b4cab259ea9423e94eb643c789c12b9/FLAG7412c1dff [2018-10-10 14:42:31,240 INFO L345 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/892fc868c/0b4cab259ea9423e94eb643c789c12b9 [2018-10-10 14:42:31,249 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 14:42:31,251 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-10 14:42:31,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-10 14:42:31,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-10 14:42:31,258 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-10 14:42:31,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 02:42:31" (1/1) ... [2018-10-10 14:42:31,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@428c3a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:31, skipping insertion in model container [2018-10-10 14:42:31,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 02:42:31" (1/1) ... [2018-10-10 14:42:31,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-10 14:42:31,332 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-10 14:42:31,586 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 14:42:31,595 INFO L189 MainTranslator]: Completed pre-run [2018-10-10 14:42:31,644 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 14:42:31,712 INFO L193 MainTranslator]: Completed translation [2018-10-10 14:42:31,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:31 WrapperNode [2018-10-10 14:42:31,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-10 14:42:31,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-10 14:42:31,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-10 14:42:31,714 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-10 14:42:31,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:31" (1/1) ... [2018-10-10 14:42:31,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:31" (1/1) ... [2018-10-10 14:42:31,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-10 14:42:31,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 14:42:31,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 14:42:31,785 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 14:42:31,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:31" (1/1) ... [2018-10-10 14:42:31,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:31" (1/1) ... [2018-10-10 14:42:31,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:31" (1/1) ... [2018-10-10 14:42:31,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:31" (1/1) ... [2018-10-10 14:42:31,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:31" (1/1) ... [2018-10-10 14:42:31,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:31" (1/1) ... [2018-10-10 14:42:31,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:31" (1/1) ... [2018-10-10 14:42:31,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 14:42:31,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 14:42:31,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 14:42:31,842 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 14:42:31,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:31" (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 14:42:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 14:42:31,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 14:42:32,615 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 14:42:32,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 02:42:32 BoogieIcfgContainer [2018-10-10 14:42:32,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 14:42:32,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 14:42:32,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 14:42:32,621 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 14:42:32,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 02:42:31" (1/3) ... [2018-10-10 14:42:32,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f83f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 02:42:32, skipping insertion in model container [2018-10-10 14:42:32,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:31" (2/3) ... [2018-10-10 14:42:32,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f83f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 02:42:32, skipping insertion in model container [2018-10-10 14:42:32,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 02:42:32" (3/3) ... [2018-10-10 14:42:32,625 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrnlen-alloca_true-valid-memsafety_true-termination.i [2018-10-10 14:42:32,633 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-10 14:42:32,641 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-10-10 14:42:32,655 INFO L257 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2018-10-10 14:42:32,681 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 14:42:32,682 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 14:42:32,682 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 14:42:32,682 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-10 14:42:32,683 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 14:42:32,683 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 14:42:32,683 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 14:42:32,683 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 14:42:32,683 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 14:42:32,699 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states. [2018-10-10 14:42:32,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-10 14:42:32,708 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:42:32,709 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] [2018-10-10 14:42:32,711 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:42:32,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:42:32,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1970648117, now seen corresponding path program 1 times [2018-10-10 14:42:32,720 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:42:32,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:42:32,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:32,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:32,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:33,064 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 14:42:33,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:42:33,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-10 14:42:33,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-10 14:42:33,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-10 14:42:33,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-10 14:42:33,095 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 6 states. [2018-10-10 14:42:33,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:42:33,676 INFO L93 Difference]: Finished difference Result 96 states and 99 transitions. [2018-10-10 14:42:33,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-10 14:42:33,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2018-10-10 14:42:33,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:42:33,690 INFO L225 Difference]: With dead ends: 96 [2018-10-10 14:42:33,690 INFO L226 Difference]: Without dead ends: 91 [2018-10-10 14:42:33,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-10 14:42:33,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-10 14:42:33,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-10 14:42:33,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-10 14:42:33,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2018-10-10 14:42:33,730 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 33 [2018-10-10 14:42:33,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:42:33,731 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2018-10-10 14:42:33,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-10 14:42:33,731 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2018-10-10 14:42:33,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-10 14:42:33,733 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:42:33,733 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] [2018-10-10 14:42:33,733 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:42:33,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:42:33,734 INFO L82 PathProgramCache]: Analyzing trace with hash 960549561, now seen corresponding path program 1 times [2018-10-10 14:42:33,734 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:42:33,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:42:33,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:33,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:33,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:34,045 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 14:42:34,045 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:42:34,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-10 14:42:34,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 14:42:34,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 14:42:34,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-10 14:42:34,048 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand 9 states. [2018-10-10 14:42:34,354 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-10 14:42:34,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:42:34,736 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2018-10-10 14:42:34,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-10 14:42:34,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2018-10-10 14:42:34,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:42:34,738 INFO L225 Difference]: With dead ends: 90 [2018-10-10 14:42:34,738 INFO L226 Difference]: Without dead ends: 90 [2018-10-10 14:42:34,739 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2018-10-10 14:42:34,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-10 14:42:34,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-10 14:42:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-10 14:42:34,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2018-10-10 14:42:34,753 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 34 [2018-10-10 14:42:34,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:42:34,754 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2018-10-10 14:42:34,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 14:42:34,754 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2018-10-10 14:42:34,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-10 14:42:34,757 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:42:34,758 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] [2018-10-10 14:42:34,758 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:42:34,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:42:34,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1348462880, now seen corresponding path program 1 times [2018-10-10 14:42:34,759 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:42:34,759 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:42:34,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:34,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:34,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:34,939 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 14:42:34,939 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:42:34,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-10 14:42:34,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 14:42:34,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 14:42:34,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-10-10 14:42:34,941 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand 9 states. [2018-10-10 14:42:35,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:42:35,443 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2018-10-10 14:42:35,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-10 14:42:35,444 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2018-10-10 14:42:35,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:42:35,449 INFO L225 Difference]: With dead ends: 162 [2018-10-10 14:42:35,449 INFO L226 Difference]: Without dead ends: 162 [2018-10-10 14:42:35,450 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2018-10-10 14:42:35,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-10-10 14:42:35,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 96. [2018-10-10 14:42:35,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-10 14:42:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2018-10-10 14:42:35,462 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 53 [2018-10-10 14:42:35,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:42:35,463 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2018-10-10 14:42:35,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 14:42:35,463 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2018-10-10 14:42:35,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-10 14:42:35,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:42:35,465 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 14:42:35,466 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:42:35,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:42:35,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1147323785, now seen corresponding path program 1 times [2018-10-10 14:42:35,467 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:42:35,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:42:35,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:35,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:35,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:35,766 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 14:42:35,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:42:35,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-10 14:42:35,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-10 14:42:35,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-10 14:42:35,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-10-10 14:42:35,768 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand 12 states. [2018-10-10 14:42:36,470 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-10-10 14:42:36,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:42:36,667 INFO L93 Difference]: Finished difference Result 176 states and 181 transitions. [2018-10-10 14:42:36,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-10 14:42:36,668 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2018-10-10 14:42:36,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:42:36,670 INFO L225 Difference]: With dead ends: 176 [2018-10-10 14:42:36,670 INFO L226 Difference]: Without dead ends: 176 [2018-10-10 14:42:36,671 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=215, Invalid=435, Unknown=0, NotChecked=0, Total=650 [2018-10-10 14:42:36,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-10-10 14:42:36,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 97. [2018-10-10 14:42:36,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-10 14:42:36,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2018-10-10 14:42:36,678 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 54 [2018-10-10 14:42:36,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:42:36,679 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2018-10-10 14:42:36,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-10 14:42:36,679 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2018-10-10 14:42:36,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-10 14:42:36,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:42:36,681 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] [2018-10-10 14:42:36,681 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:42:36,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:42:36,681 INFO L82 PathProgramCache]: Analyzing trace with hash 450898413, now seen corresponding path program 1 times [2018-10-10 14:42:36,682 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:42:36,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:42:36,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:36,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:36,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:42:36,800 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:42:36,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 14:42:36,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 14:42:36,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 14:42:36,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 14:42:36,802 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 3 states. [2018-10-10 14:42:36,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:42:36,879 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2018-10-10 14:42:36,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 14:42:36,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2018-10-10 14:42:36,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:42:36,881 INFO L225 Difference]: With dead ends: 98 [2018-10-10 14:42:36,881 INFO L226 Difference]: Without dead ends: 98 [2018-10-10 14:42:36,881 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 14:42:36,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-10 14:42:36,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-10 14:42:36,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-10 14:42:36,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2018-10-10 14:42:36,888 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 65 [2018-10-10 14:42:36,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:42:36,889 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2018-10-10 14:42:36,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 14:42:36,889 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2018-10-10 14:42:36,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-10 14:42:36,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:42:36,891 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:42:36,891 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:42:36,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:42:36,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1177426483, now seen corresponding path program 1 times [2018-10-10 14:42:36,892 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:42:36,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:42:36,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:36,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:36,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:37,088 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 14:42:37,088 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:42:37,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-10 14:42:37,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 14:42:37,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 14:42:37,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-10 14:42:37,090 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 9 states. [2018-10-10 14:42:37,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:42:37,350 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2018-10-10 14:42:37,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-10 14:42:37,350 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2018-10-10 14:42:37,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:42:37,352 INFO L225 Difference]: With dead ends: 97 [2018-10-10 14:42:37,352 INFO L226 Difference]: Without dead ends: 81 [2018-10-10 14:42:37,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2018-10-10 14:42:37,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-10 14:42:37,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-10 14:42:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-10 14:42:37,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2018-10-10 14:42:37,358 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 66 [2018-10-10 14:42:37,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:42:37,359 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2018-10-10 14:42:37,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 14:42:37,359 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2018-10-10 14:42:37,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-10 14:42:37,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:42:37,361 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:42:37,361 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:42:37,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:42:37,361 INFO L82 PathProgramCache]: Analyzing trace with hash 185632286, now seen corresponding path program 1 times [2018-10-10 14:42:37,362 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:42:37,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:42:37,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:37,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:37,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-10 14:42:37,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-10 14:42:37,496 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 14:42:37,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:37,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 14:42:37,600 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 14:42:37,602 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 14:42:37,605 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 14:42:37,605 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-10-10 14:42:37,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-10 14:42:37,833 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 14:42:37,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-10 14:42:37,873 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 ULTIMATE.start_cstrnlen_#t~short5's outvar occurs in several conjuncts [(let ((.cse0 (= 0 (mod v_ULTIMATE.start_cstrnlen_~maxlen_3 4294967296)))) (or (and (not .cse0) |v_ULTIMATE.start_cstrnlen_#t~short5_2|) (and .cse0 (not |v_ULTIMATE.start_cstrnlen_#t~short5_2|))))] at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.(SimultaneousUpdate.java:107) 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 14:42:37,877 INFO L168 Benchmark]: Toolchain (without parser) took 6627.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -399.7 MB). Peak memory consumption was 344.3 MB. Max. memory is 7.1 GB. [2018-10-10 14:42:37,878 INFO L168 Benchmark]: CDTParser took 0.20 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 14:42:37,879 INFO L168 Benchmark]: CACSL2BoogieTranslator took 459.80 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: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2018-10-10 14:42:37,883 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.17 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 14:42:37,887 INFO L168 Benchmark]: Boogie Preprocessor took 58.21 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 14:42:37,888 INFO L168 Benchmark]: RCFGBuilder took 774.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -794.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2018-10-10 14:42:37,889 INFO L168 Benchmark]: TraceAbstraction took 5258.98 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: 371.0 MB). Peak memory consumption was 371.0 MB. Max. memory is 7.1 GB. [2018-10-10 14:42:37,896 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 459.80 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: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 69.17 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 58.21 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 774.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -794.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5258.98 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: 371.0 MB). Peak memory consumption was 371.0 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 ULTIMATE.start_cstrnlen_#t~short5's outvar occurs in several conjuncts [(let ((.cse0 (= 0 (mod v_ULTIMATE.start_cstrnlen_~maxlen_3 4294967296)))) (or (and (not .cse0) |v_ULTIMATE.start_cstrnlen_#t~short5_2|) (and .cse0 (not |v_ULTIMATE.start_cstrnlen_#t~short5_2|))))] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: cannot bring into simultaneous update form ULTIMATE.start_cstrnlen_#t~short5's outvar occurs in several conjuncts [(let ((.cse0 (= 0 (mod v_ULTIMATE.start_cstrnlen_~maxlen_3 4294967296)))) (or (and (not .cse0) |v_ULTIMATE.start_cstrnlen_#t~short5_2|) (and .cse0 (not |v_ULTIMATE.start_cstrnlen_#t~short5_2|))))]: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.(SimultaneousUpdate.java:107) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...