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/cstrlen-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c5b1954-m [2018-10-10 14:41:35,964 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 14:41:35,967 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 14:41:35,984 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 14:41:35,984 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 14:41:35,986 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 14:41:35,987 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 14:41:35,990 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 14:41:35,992 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 14:41:35,993 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 14:41:35,995 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 14:41:35,995 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 14:41:35,996 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 14:41:35,999 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 14:41:36,008 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 14:41:36,009 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 14:41:36,010 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 14:41:36,012 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 14:41:36,014 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 14:41:36,015 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 14:41:36,018 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 14:41:36,020 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 14:41:36,022 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 14:41:36,031 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 14:41:36,045 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 14:41:36,046 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 14:41:36,050 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-10 14:41:36,050 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-10 14:41:36,050 INFO L133 SettingsManager]: * Use SBE=true [2018-10-10 14:41:36,051 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-10 14:41:36,051 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-10 14:41:36,051 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-10 14:41:36,051 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-10 14:41:36,051 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-10 14:41:36,051 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-10 14:41:36,052 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-10 14:41:36,052 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-10 14:41:36,052 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-10 14:41:36,052 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-10 14:41:36,052 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-10 14:41:36,053 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 14:41:36,053 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-10 14:41:36,053 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-10 14:41:36,053 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-10 14:41:36,053 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 14:41:36,054 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 14:41:36,054 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-10 14:41:36,054 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-10 14:41:36,054 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-10 14:41:36,054 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 14:41:36,120 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 14:41:36,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 14:41:36,144 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 14:41:36,147 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-10 14:41:36,148 INFO L276 PluginConnector]: CDTParser initialized [2018-10-10 14:41:36,149 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrlen-alloca_true-valid-memsafety_true-termination.i [2018-10-10 14:41:36,450 INFO L217 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2242eda5f/49a5f8d428e34937a3be5b38358caf44/FLAGf8ec2af99 [2018-10-10 14:41:36,751 INFO L289 CDTParser]: Found 1 translation units. [2018-10-10 14:41:36,752 INFO L157 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-memsafety/cstrlen-alloca_true-valid-memsafety_true-termination.i [2018-10-10 14:41:36,767 INFO L337 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2242eda5f/49a5f8d428e34937a3be5b38358caf44/FLAGf8ec2af99 [2018-10-10 14:41:36,789 INFO L345 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2242eda5f/49a5f8d428e34937a3be5b38358caf44 [2018-10-10 14:41:36,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 14:41:36,805 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-10 14:41:36,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-10 14:41:36,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-10 14:41:36,810 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-10 14:41:36,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 02:41:36" (1/1) ... [2018-10-10 14:41:36,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b15961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:36, skipping insertion in model container [2018-10-10 14:41:36,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 02:41:36" (1/1) ... [2018-10-10 14:41:36,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-10 14:41:36,892 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-10 14:41:37,177 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 14:41:37,193 INFO L189 MainTranslator]: Completed pre-run [2018-10-10 14:41:37,259 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 14:41:37,315 INFO L193 MainTranslator]: Completed translation [2018-10-10 14:41:37,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:37 WrapperNode [2018-10-10 14:41:37,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-10 14:41:37,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-10 14:41:37,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-10 14:41:37,318 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-10 14:41:37,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:37" (1/1) ... [2018-10-10 14:41:37,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:37" (1/1) ... [2018-10-10 14:41:37,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-10 14:41:37,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 14:41:37,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 14:41:37,382 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 14:41:37,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:37" (1/1) ... [2018-10-10 14:41:37,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:37" (1/1) ... [2018-10-10 14:41:37,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:37" (1/1) ... [2018-10-10 14:41:37,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:37" (1/1) ... [2018-10-10 14:41:37,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:37" (1/1) ... [2018-10-10 14:41:37,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:37" (1/1) ... [2018-10-10 14:41:37,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:37" (1/1) ... [2018-10-10 14:41:37,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 14:41:37,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 14:41:37,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 14:41:37,433 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 14:41:37,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:37" (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 14:41:37,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 14:41:37,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 14:41:38,092 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 14:41:38,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 02:41:38 BoogieIcfgContainer [2018-10-10 14:41:38,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 14:41:38,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 14:41:38,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 14:41:38,098 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 14:41:38,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 02:41:36" (1/3) ... [2018-10-10 14:41:38,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db180da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 02:41:38, skipping insertion in model container [2018-10-10 14:41:38,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:37" (2/3) ... [2018-10-10 14:41:38,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db180da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 02:41:38, skipping insertion in model container [2018-10-10 14:41:38,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 02:41:38" (3/3) ... [2018-10-10 14:41:38,102 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrlen-alloca_true-valid-memsafety_true-termination.i [2018-10-10 14:41:38,112 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-10 14:41:38,120 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-10-10 14:41:38,137 INFO L257 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2018-10-10 14:41:38,166 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 14:41:38,167 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 14:41:38,167 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 14:41:38,167 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-10 14:41:38,168 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 14:41:38,168 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 14:41:38,168 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 14:41:38,168 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 14:41:38,169 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 14:41:38,187 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2018-10-10 14:41:38,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-10 14:41:38,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:38,198 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] [2018-10-10 14:41:38,200 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:38,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:38,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1662470226, now seen corresponding path program 1 times [2018-10-10 14:41:38,209 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:38,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:38,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:38,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:38,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:41:38,596 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 14:41:38,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:41:38,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-10 14:41:38,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-10 14:41:38,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-10 14:41:38,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-10 14:41:38,634 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 6 states. [2018-10-10 14:41:38,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:41:38,996 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2018-10-10 14:41:38,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-10 14:41:38,998 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2018-10-10 14:41:38,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:41:39,009 INFO L225 Difference]: With dead ends: 82 [2018-10-10 14:41:39,009 INFO L226 Difference]: Without dead ends: 77 [2018-10-10 14:41:39,011 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 14:41:39,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-10 14:41:39,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-10 14:41:39,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-10 14:41:39,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2018-10-10 14:41:39,049 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 29 [2018-10-10 14:41:39,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:41:39,050 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2018-10-10 14:41:39,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-10 14:41:39,050 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2018-10-10 14:41:39,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-10 14:41:39,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:39,052 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] [2018-10-10 14:41:39,052 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:39,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:39,053 INFO L82 PathProgramCache]: Analyzing trace with hash 3030614, now seen corresponding path program 1 times [2018-10-10 14:41:39,053 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:39,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:39,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:39,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:39,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:41:39,397 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 14:41:39,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:41:39,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-10 14:41:39,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 14:41:39,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 14:41:39,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-10 14:41:39,400 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 9 states. [2018-10-10 14:41:39,778 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-10-10 14:41:40,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:41:40,058 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2018-10-10 14:41:40,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-10 14:41:40,059 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-10-10 14:41:40,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:41:40,062 INFO L225 Difference]: With dead ends: 76 [2018-10-10 14:41:40,062 INFO L226 Difference]: Without dead ends: 76 [2018-10-10 14:41:40,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2018-10-10 14:41:40,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-10 14:41:40,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-10 14:41:40,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-10 14:41:40,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2018-10-10 14:41:40,072 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 30 [2018-10-10 14:41:40,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:41:40,073 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2018-10-10 14:41:40,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 14:41:40,073 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2018-10-10 14:41:40,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-10 14:41:40,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:40,075 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] [2018-10-10 14:41:40,075 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:40,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:40,075 INFO L82 PathProgramCache]: Analyzing trace with hash 269892696, now seen corresponding path program 1 times [2018-10-10 14:41:40,075 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:40,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:40,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:40,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:40,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:41:40,208 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 14:41:40,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:41:40,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-10 14:41:40,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 14:41:40,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 14:41:40,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-10 14:41:40,211 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 9 states. [2018-10-10 14:41:40,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:41:40,781 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2018-10-10 14:41:40,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-10 14:41:40,785 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2018-10-10 14:41:40,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:41:40,787 INFO L225 Difference]: With dead ends: 103 [2018-10-10 14:41:40,787 INFO L226 Difference]: Without dead ends: 103 [2018-10-10 14:41:40,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2018-10-10 14:41:40,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-10 14:41:40,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 80. [2018-10-10 14:41:40,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-10 14:41:40,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2018-10-10 14:41:40,810 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 45 [2018-10-10 14:41:40,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:41:40,811 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2018-10-10 14:41:40,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 14:41:40,811 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2018-10-10 14:41:40,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-10 14:41:40,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:40,814 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] [2018-10-10 14:41:40,817 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:40,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:40,817 INFO L82 PathProgramCache]: Analyzing trace with hash -223260926, now seen corresponding path program 1 times [2018-10-10 14:41:40,818 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:40,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:40,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:40,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:40,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:41:41,176 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 14:41:41,177 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:41:41,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-10 14:41:41,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-10 14:41:41,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-10 14:41:41,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-10-10 14:41:41,178 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand 12 states. [2018-10-10 14:41:41,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:41:41,921 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2018-10-10 14:41:41,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-10 14:41:41,921 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2018-10-10 14:41:41,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:41:41,923 INFO L225 Difference]: With dead ends: 111 [2018-10-10 14:41:41,923 INFO L226 Difference]: Without dead ends: 111 [2018-10-10 14:41:41,924 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2018-10-10 14:41:41,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-10 14:41:41,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 81. [2018-10-10 14:41:41,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-10 14:41:41,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-10-10 14:41:41,931 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 46 [2018-10-10 14:41:41,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:41:41,931 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-10-10 14:41:41,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-10 14:41:41,932 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-10-10 14:41:41,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-10 14:41:41,933 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:41,933 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-10 14:41:41,934 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:41,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:41,934 INFO L82 PathProgramCache]: Analyzing trace with hash -2092330553, now seen corresponding path program 1 times [2018-10-10 14:41:41,935 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:41,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:41,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:41,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:41,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:41:42,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-10 14:41:42,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-10 14:41:42,100 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 14:41:42,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:41:42,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 14:41:42,203 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 14:41:42,205 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 14:41:42,208 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 14:41:42,209 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-10-10 14:41:42,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-10 14:41:42,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 14:41:42,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-10 14:41:42,384 WARN L240 PathProgramDumper]: Writing path program to file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/dump/cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl [2018-10-10 14:41:42,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-10 14:41:42,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-10 14:41:42,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-10 14:41:42,391 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 10 states. [2018-10-10 14:41:42,678 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-10 14:41:42,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:41:42,826 INFO L93 Difference]: Finished difference Result 80 states and 81 transitions. [2018-10-10 14:41:42,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-10 14:41:42,830 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2018-10-10 14:41:42,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:41:42,831 INFO L225 Difference]: With dead ends: 80 [2018-10-10 14:41:42,831 INFO L226 Difference]: Without dead ends: 80 [2018-10-10 14:41:42,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2018-10-10 14:41:42,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-10 14:41:42,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-10 14:41:42,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-10 14:41:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2018-10-10 14:41:42,840 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 61 [2018-10-10 14:41:42,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:41:42,841 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2018-10-10 14:41:42,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-10 14:41:42,841 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2018-10-10 14:41:42,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-10 14:41:42,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:42,843 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-10 14:41:42,843 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:42,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:42,844 INFO L82 PathProgramCache]: Analyzing trace with hash -437737613, now seen corresponding path program 1 times [2018-10-10 14:41:42,844 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:42,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:42,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:42,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:42,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:41:43,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:41:43,537 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-10 14:41:43,537 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-10 14:41:43,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:41:43,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 14:41:43,775 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 14:41:43,776 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 14:41:43,782 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 14:41:43,783 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-10-10 14:41:44,166 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-10-10 14:41:44,168 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 13 treesize of output 12 [2018-10-10 14:41:44,168 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-10 14:41:44,170 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 14:41:44,174 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-10 14:41:44,175 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2018-10-10 14:41:44,524 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-10-10 14:41:44,582 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 12 [2018-10-10 14:41:44,583 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-10 14:41:44,591 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-10 14:41:44,606 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-10 14:41:44,606 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:32, output treesize:27 [2018-10-10 14:41:44,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:41:44,869 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 14:41:44,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2018-10-10 14:41:44,887 WARN L240 PathProgramDumper]: Writing path program to file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/dump/cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl [2018-10-10 14:41:44,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-10 14:41:44,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-10 14:41:44,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1168, Unknown=0, NotChecked=0, Total=1260 [2018-10-10 14:41:44,890 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand 36 states. [2018-10-10 14:41:45,583 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2018-10-10 14:41:45,807 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-10-10 14:41:46,055 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2018-10-10 14:41:46,303 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2018-10-10 14:41:46,568 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2018-10-10 14:41:46,808 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2018-10-10 14:41:47,248 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 83 [2018-10-10 14:41:47,767 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 86 [2018-10-10 14:41:48,034 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2018-10-10 14:41:48,324 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2018-10-10 14:41:48,548 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2018-10-10 14:41:48,739 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2018-10-10 14:41:48,988 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 74 [2018-10-10 14:41:49,462 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2018-10-10 14:41:49,694 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2018-10-10 14:41:49,904 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2018-10-10 14:41:50,046 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2018-10-10 14:41:50,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:41:50,048 INFO L93 Difference]: Finished difference Result 142 states and 143 transitions. [2018-10-10 14:41:50,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-10 14:41:50,048 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 62 [2018-10-10 14:41:50,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:41:50,050 INFO L225 Difference]: With dead ends: 142 [2018-10-10 14:41:50,050 INFO L226 Difference]: Without dead ends: 142 [2018-10-10 14:41:50,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=728, Invalid=2578, Unknown=0, NotChecked=0, Total=3306 [2018-10-10 14:41:50,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-10-10 14:41:50,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 96. [2018-10-10 14:41:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-10 14:41:50,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2018-10-10 14:41:50,059 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 62 [2018-10-10 14:41:50,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:41:50,059 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2018-10-10 14:41:50,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-10 14:41:50,060 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2018-10-10 14:41:50,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-10 14:41:50,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:50,061 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, 1, 1] [2018-10-10 14:41:50,062 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:50,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:50,062 INFO L82 PathProgramCache]: Analyzing trace with hash -2009160752, now seen corresponding path program 1 times [2018-10-10 14:41:50,062 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:50,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:50,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:50,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:50,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:41:50,288 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 14:41:50,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:41:50,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-10 14:41:50,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 14:41:50,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 14:41:50,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-10 14:41:50,290 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand 9 states. [2018-10-10 14:41:50,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:41:50,514 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2018-10-10 14:41:50,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-10 14:41:50,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2018-10-10 14:41:50,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:41:50,515 INFO L225 Difference]: With dead ends: 95 [2018-10-10 14:41:50,515 INFO L226 Difference]: Without dead ends: 80 [2018-10-10 14:41:50,516 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 14:41:50,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-10 14:41:50,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-10 14:41:50,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-10 14:41:50,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2018-10-10 14:41:50,520 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 68 [2018-10-10 14:41:50,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:41:50,521 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2018-10-10 14:41:50,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 14:41:50,521 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2018-10-10 14:41:50,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-10 14:41:50,522 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:50,523 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:41:50,523 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:50,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:50,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1972699676, now seen corresponding path program 2 times [2018-10-10 14:41:50,523 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:50,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:50,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:50,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:50,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:41:51,160 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2018-10-10 14:41:51,413 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:41:51,413 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-10 14:41:51,413 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-10 14:41:51,425 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-10 14:41:51,478 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-10 14:41:51,478 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-10 14:41:51,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 14:41:51,513 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 14:41:51,513 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 14:41:51,531 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 14:41:51,531 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-10-10 14:41:51,596 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-10 14:41:51,599 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 8 treesize of output 7 [2018-10-10 14:41:51,599 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-10 14:41:51,601 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 14:41:51,611 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-10 14:41:51,612 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:29 [2018-10-10 14:41:52,407 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-10-10 14:41:52,450 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 8 [2018-10-10 14:41:52,450 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-10 14:41:52,457 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-10 14:41:52,474 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-10 14:41:52,474 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:42, output treesize:33 [2018-10-10 14:41:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:41:52,698 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 14:41:52,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 33 [2018-10-10 14:41:52,699 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-10 14:41:52,703 WARN L205 ceAbstractionStarter]: Timeout [2018-10-10 14:41:52,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 02:41:52 BoogieIcfgContainer [2018-10-10 14:41:52,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 14:41:52,704 INFO L168 Benchmark]: Toolchain (without parser) took 15901.18 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -982.6 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2018-10-10 14:41:52,705 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 14:41:52,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 510.87 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-10 14:41:52,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.13 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 14:41:52,707 INFO L168 Benchmark]: Boogie Preprocessor took 50.55 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 14:41:52,707 INFO L168 Benchmark]: RCFGBuilder took 660.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.2 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2018-10-10 14:41:52,708 INFO L168 Benchmark]: TraceAbstraction took 14609.09 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 273.7 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -230.6 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. [2018-10-10 14:41:52,712 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 510.87 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 64.13 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 50.55 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 660.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.2 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14609.09 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 273.7 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -230.6 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 8). - TimeoutResultAtElement [Line: 547]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 547). Cancelled while PathProgramDumpController was trying to verify (iteration 8). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 8). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 8). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line -1). Cancelled while PathProgramDumpController was trying to verify (iteration 8). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 83 locations, 5 error locations. TIMEOUT Result, 14.5s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 8.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 441 SDtfs, 4284 SDslu, 1890 SDs, 0 SdLazy, 1172 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 255 GetRequests, 110 SyntacticMatches, 4 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 99 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 464 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 455 ConstructedInterpolants, 0 QuantifiedInterpolants, 159195 SizeOfPredicates, 38 NumberOfNonLiveVariables, 242 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 6/18 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Received shutdown request...