java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --traceabstraction.dump.automata.to.the.following.directory dump -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength5_true-valid-memsafety.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c5b1954-m [2018-10-10 11:30:48,245 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 11:30:48,247 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 11:30:48,259 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 11:30:48,260 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 11:30:48,261 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 11:30:48,262 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 11:30:48,264 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 11:30:48,266 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 11:30:48,267 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 11:30:48,268 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 11:30:48,268 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 11:30:48,269 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 11:30:48,270 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 11:30:48,272 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 11:30:48,272 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 11:30:48,273 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 11:30:48,275 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 11:30:48,278 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 11:30:48,279 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 11:30:48,281 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 11:30:48,282 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 11:30:48,285 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 11:30:48,285 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 11:30:48,285 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 11:30:48,286 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 11:30:48,287 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 11:30:48,288 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 11:30:48,289 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 11:30:48,291 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 11:30:48,291 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 11:30:48,292 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-10 11:30:48,292 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-10 11:30:48,292 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-10 11:30:48,293 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-10 11:30:48,294 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-10 11:30:48,294 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2018-10-10 11:30:48,310 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 11:30:48,310 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 11:30:48,312 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-10 11:30:48,312 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-10 11:30:48,312 INFO L133 SettingsManager]: * Use SBE=true [2018-10-10 11:30:48,312 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-10 11:30:48,312 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-10 11:30:48,313 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-10 11:30:48,313 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-10 11:30:48,313 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-10 11:30:48,313 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-10 11:30:48,314 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-10 11:30:48,314 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-10 11:30:48,314 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-10 11:30:48,314 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-10 11:30:48,314 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-10 11:30:48,315 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-10 11:30:48,315 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-10 11:30:48,315 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 11:30:48,315 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-10 11:30:48,315 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-10 11:30:48,316 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-10 11:30:48,316 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 11:30:48,316 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 11:30:48,316 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-10 11:30:48,316 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-10 11:30:48,317 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-10 11:30:48,317 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-10 11:30:48,317 INFO L133 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Dump automata to the following directory -> dump [2018-10-10 11:30:48,362 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 11:30:48,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 11:30:48,380 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 11:30:48,382 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-10 11:30:48,382 INFO L276 PluginConnector]: CDTParser initialized [2018-10-10 11:30:48,383 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength5_true-valid-memsafety.c [2018-10-10 11:30:48,715 INFO L217 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e28a8c746/ec30cf73ab934cdab4bd70e1cd045c86/FLAG9ba3cf5e7 [2018-10-10 11:30:48,927 INFO L289 CDTParser]: Found 1 translation units. [2018-10-10 11:30:48,928 INFO L157 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength5_true-valid-memsafety.c [2018-10-10 11:30:48,936 INFO L337 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e28a8c746/ec30cf73ab934cdab4bd70e1cd045c86/FLAG9ba3cf5e7 [2018-10-10 11:30:48,961 INFO L345 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e28a8c746/ec30cf73ab934cdab4bd70e1cd045c86 [2018-10-10 11:30:48,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 11:30:48,977 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-10 11:30:48,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-10 11:30:48,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-10 11:30:48,986 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-10 11:30:48,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:30:48" (1/1) ... [2018-10-10 11:30:48,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d1383d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:48, skipping insertion in model container [2018-10-10 11:30:48,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:30:48" (1/1) ... [2018-10-10 11:30:49,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-10 11:30:49,028 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-10 11:30:49,266 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 11:30:49,288 INFO L189 MainTranslator]: Completed pre-run [2018-10-10 11:30:49,320 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 11:30:49,353 INFO L193 MainTranslator]: Completed translation [2018-10-10 11:30:49,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49 WrapperNode [2018-10-10 11:30:49,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-10 11:30:49,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-10 11:30:49,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-10 11:30:49,358 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-10 11:30:49,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-10 11:30:49,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 11:30:49,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 11:30:49,425 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 11:30:49,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... [2018-10-10 11:30:49,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 11:30:49,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 11:30:49,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 11:30:49,462 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 11:30:49,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 11:30:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 11:30:49,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 11:30:50,120 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 11:30:50,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:30:50 BoogieIcfgContainer [2018-10-10 11:30:50,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 11:30:50,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 11:30:50,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 11:30:50,125 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 11:30:50,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 11:30:48" (1/3) ... [2018-10-10 11:30:50,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46600594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:30:50, skipping insertion in model container [2018-10-10 11:30:50,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49" (2/3) ... [2018-10-10 11:30:50,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46600594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:30:50, skipping insertion in model container [2018-10-10 11:30:50,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:30:50" (3/3) ... [2018-10-10 11:30:50,129 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength5_true-valid-memsafety.c [2018-10-10 11:30:50,139 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-10 11:30:50,148 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-10-10 11:30:50,166 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2018-10-10 11:30:50,190 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 11:30:50,191 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 11:30:50,191 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 11:30:50,191 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-10 11:30:50,191 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 11:30:50,192 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 11:30:50,192 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 11:30:50,192 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 11:30:50,192 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 11:30:50,208 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-10-10 11:30:50,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-10 11:30:50,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:50,224 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:30:50,228 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:50,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:50,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1805952520, now seen corresponding path program 1 times [2018-10-10 11:30:50,242 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:50,243 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:30:50,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:50,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 11:30:50,386 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:30:50,393 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:30:50,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-10 11:30:50,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-10 11:30:50,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-10 11:30:50,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-10 11:30:50,413 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2018-10-10 11:30:50,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:30:50,870 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2018-10-10 11:30:50,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-10 11:30:50,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-10-10 11:30:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:30:50,883 INFO L225 Difference]: With dead ends: 89 [2018-10-10 11:30:50,883 INFO L226 Difference]: Without dead ends: 81 [2018-10-10 11:30:50,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-10 11:30:50,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-10 11:30:50,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 39. [2018-10-10 11:30:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-10 11:30:50,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-10-10 11:30:50,920 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 7 [2018-10-10 11:30:50,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:30:50,920 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-10-10 11:30:50,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-10 11:30:50,921 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-10-10 11:30:50,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-10 11:30:50,921 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:50,921 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:30:50,922 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:50,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:50,922 INFO L82 PathProgramCache]: Analyzing trace with hash 353536214, now seen corresponding path program 1 times [2018-10-10 11:30:50,923 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:50,923 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:30:50,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:50,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:51,012 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-10-10 11:30:51,039 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 11 [2018-10-10 11:30:51,040 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-10 11:30:51,075 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 11:30:51,117 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-10 11:30:51,117 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2018-10-10 11:30:51,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 11:30:51,221 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:30:51,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:30:51,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 11:30:51,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-10 11:30:51,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-10 11:30:51,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-10 11:30:51,228 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 4 states. [2018-10-10 11:30:51,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:30:51,350 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-10-10 11:30:51,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-10 11:30:51,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-10-10 11:30:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:30:51,353 INFO L225 Difference]: With dead ends: 40 [2018-10-10 11:30:51,353 INFO L226 Difference]: Without dead ends: 40 [2018-10-10 11:30:51,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-10 11:30:51,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-10 11:30:51,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2018-10-10 11:30:51,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-10 11:30:51,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-10-10 11:30:51,359 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 9 [2018-10-10 11:30:51,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:30:51,360 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-10-10 11:30:51,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-10 11:30:51,360 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-10-10 11:30:51,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-10 11:30:51,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:51,361 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:30:51,362 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:51,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:51,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1925279186, now seen corresponding path program 1 times [2018-10-10 11:30:51,363 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:51,363 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:30:51,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:51,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:51,474 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-10-10 11:30:51,475 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 11:30:51,528 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-10-10 11:30:51,541 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-10-10 11:30:51,542 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-10 11:30:51,556 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 11:30:51,577 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 11:30:51,577 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2018-10-10 11:30:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 11:30:51,638 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:30:51,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:30:51,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 11:30:51,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-10 11:30:51,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-10 11:30:51,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-10 11:30:51,641 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 4 states. [2018-10-10 11:30:51,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:30:51,973 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2018-10-10 11:30:51,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-10 11:30:51,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-10 11:30:51,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:30:51,975 INFO L225 Difference]: With dead ends: 71 [2018-10-10 11:30:51,975 INFO L226 Difference]: Without dead ends: 71 [2018-10-10 11:30:51,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-10 11:30:51,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-10 11:30:51,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 42. [2018-10-10 11:30:51,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-10 11:30:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2018-10-10 11:30:51,982 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 10 [2018-10-10 11:30:51,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:30:51,983 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2018-10-10 11:30:51,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-10 11:30:51,983 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2018-10-10 11:30:51,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-10 11:30:51,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:51,984 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:30:51,984 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:51,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:51,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1869190066, now seen corresponding path program 1 times [2018-10-10 11:30:51,985 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:51,986 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:30:52,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:52,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-10 11:30:52,134 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:30:52,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:30:52,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-10 11:30:52,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 11:30:52,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 11:30:52,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 11:30:52,144 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 3 states. [2018-10-10 11:30:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:30:52,322 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2018-10-10 11:30:52,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 11:30:52,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-10-10 11:30:52,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:30:52,326 INFO L225 Difference]: With dead ends: 73 [2018-10-10 11:30:52,327 INFO L226 Difference]: Without dead ends: 73 [2018-10-10 11:30:52,327 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 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 11:30:52,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-10 11:30:52,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 45. [2018-10-10 11:30:52,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-10 11:30:52,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-10-10 11:30:52,333 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 16 [2018-10-10 11:30:52,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:30:52,333 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-10-10 11:30:52,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 11:30:52,333 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-10-10 11:30:52,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-10 11:30:52,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:52,334 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:30:52,335 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:52,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:52,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2109362049, now seen corresponding path program 1 times [2018-10-10 11:30:52,335 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:52,336 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:30:52,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:52,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 11:30:52,425 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-10 11:30:52,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 11:30:52,477 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 11:30:52,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-10-10 11:30:52,516 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: cannot bring into simultaneous update form, |v_ULTIMATE.start_main_~#b~0.base_1| has two outvars in equality [(= (store |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| |v_ULTIMATE.start_#Ultimate.alloc_~size_1|) |v_#length_1|), (= |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1| (_ bv0 32)), (= |v_ULTIMATE.start_#Ultimate.alloc_~size_1| (_ bv32 32)), (not (= (_ bv0 32) |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|)), (= |v_ULTIMATE.start_main_old_#valid_1| |v_#valid_5|), (= |v_ULTIMATE.start_main_~#mask~0.base_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|), (= |v_ULTIMATE.start_main_~#mask~0.offset_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1|), (= (store |v_#valid_5| |v_ULTIMATE.start_main_~#b~0.base_1| (_ bv1 1)) |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1|), (= (select |v_#valid_5| |v_ULTIMATE.start_main_~#b~0.base_1|) (_ bv0 1)), (= v_ULTIMATE.start_main_~i~1_2 (_ bv0 32)), (= (store |v_#length_3| |v_ULTIMATE.start_main_~#b~0.base_1| (_ bv128 32)) |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1|), (= (_ bv0 32) |v_ULTIMATE.start_main_~#b~0.offset_1|), (= (select |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|) (_ bv0 1)), (not (= |v_ULTIMATE.start_main_~#b~0.base_1| (_ bv0 32))), (= (store |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| (_ bv1 1)) |v_#valid_3|)] at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.computeSubstitutionMapping(SimultaneousUpdate.java:174) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.extractUpdateRhs(SimultaneousUpdate.java:154) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.(SimultaneousUpdate.java:104) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.addStatementsAndVariables(PathProgramDumper.java:634) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.constructTransitionStatements(PathProgramDumper.java:560) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.processTransition(PathProgramDumper.java:521) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.constructProcedureStatements(PathProgramDumper.java:489) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.constructNewImplementation(PathProgramDumper.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumper.(PathProgramDumper.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumpController.doDump(PathProgramDumpController.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramDumpController.reportPathProgram(PathProgramDumpController.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-10 11:30:52,521 INFO L168 Benchmark]: Toolchain (without parser) took 3544.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -661.2 MB). Peak memory consumption was 93.3 MB. Max. memory is 7.1 GB. [2018-10-10 11:30:52,523 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 11:30:52,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-10 11:30:52,525 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.40 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 11:30:52,525 INFO L168 Benchmark]: Boogie Preprocessor took 37.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 11:30:52,526 INFO L168 Benchmark]: RCFGBuilder took 659.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -790.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2018-10-10 11:30:52,529 INFO L168 Benchmark]: TraceAbstraction took 2397.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.2 MB). Peak memory consumption was 119.2 MB. Max. memory is 7.1 GB. [2018-10-10 11:30:52,535 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 372.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 66.40 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 37.20 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 659.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -790.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2397.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.2 MB). Peak memory consumption was 119.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalArgumentException: cannot bring into simultaneous update form, |v_ULTIMATE.start_main_~#b~0.base_1| has two outvars in equality [(= (store |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| |v_ULTIMATE.start_#Ultimate.alloc_~size_1|) |v_#length_1|), (= |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1| (_ bv0 32)), (= |v_ULTIMATE.start_#Ultimate.alloc_~size_1| (_ bv32 32)), (not (= (_ bv0 32) |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|)), (= |v_ULTIMATE.start_main_old_#valid_1| |v_#valid_5|), (= |v_ULTIMATE.start_main_~#mask~0.base_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|), (= |v_ULTIMATE.start_main_~#mask~0.offset_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1|), (= (store |v_#valid_5| |v_ULTIMATE.start_main_~#b~0.base_1| (_ bv1 1)) |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1|), (= (select |v_#valid_5| |v_ULTIMATE.start_main_~#b~0.base_1|) (_ bv0 1)), (= v_ULTIMATE.start_main_~i~1_2 (_ bv0 32)), (= (store |v_#length_3| |v_ULTIMATE.start_main_~#b~0.base_1| (_ bv128 32)) |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1|), (= (_ bv0 32) |v_ULTIMATE.start_main_~#b~0.offset_1|), (= (select |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|) (_ bv0 1)), (not (= |v_ULTIMATE.start_main_~#b~0.base_1| (_ bv0 32))), (= (store |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| (_ bv1 1)) |v_#valid_3|)] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: cannot bring into simultaneous update form, |v_ULTIMATE.start_main_~#b~0.base_1| has two outvars in equality [(= (store |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| |v_ULTIMATE.start_#Ultimate.alloc_~size_1|) |v_#length_1|), (= |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1| (_ bv0 32)), (= |v_ULTIMATE.start_#Ultimate.alloc_~size_1| (_ bv32 32)), (not (= (_ bv0 32) |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|)), (= |v_ULTIMATE.start_main_old_#valid_1| |v_#valid_5|), (= |v_ULTIMATE.start_main_~#mask~0.base_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|), (= |v_ULTIMATE.start_main_~#mask~0.offset_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.offset_1|), (= (store |v_#valid_5| |v_ULTIMATE.start_main_~#b~0.base_1| (_ bv1 1)) |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1|), (= (select |v_#valid_5| |v_ULTIMATE.start_main_~#b~0.base_1|) (_ bv0 1)), (= v_ULTIMATE.start_main_~i~1_2 (_ bv0 32)), (= (store |v_#length_3| |v_ULTIMATE.start_main_~#b~0.base_1| (_ bv128 32)) |v_ULTIMATE.start_#Ultimate.alloc_old_#length_1|), (= (_ bv0 32) |v_ULTIMATE.start_main_~#b~0.offset_1|), (= (select |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1|) (_ bv0 1)), (not (= |v_ULTIMATE.start_main_~#b~0.base_1| (_ bv0 32))), (= (store |v_ULTIMATE.start_#Ultimate.alloc_old_#valid_1| |v_ULTIMATE.start_#Ultimate.alloc_#res.base_1| (_ bv1 1)) |v_#valid_3|)]: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.transitions.SimultaneousUpdate.computeSubstitutionMapping(SimultaneousUpdate.java:174) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...