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/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c5b1954-m [2018-10-10 11:30:48,128 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 11:30:48,130 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 11:30:48,142 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 11:30:48,143 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 11:30:48,144 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 11:30:48,145 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 11:30:48,147 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 11:30:48,149 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 11:30:48,150 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 11:30:48,151 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 11:30:48,151 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 11:30:48,152 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 11:30:48,153 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 11:30:48,155 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 11:30:48,155 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 11:30:48,156 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 11:30:48,158 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 11:30:48,160 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 11:30:48,162 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 11:30:48,163 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 11:30:48,168 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 11:30:48,173 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 11:30:48,174 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 11:30:48,174 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 11:30:48,175 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 11:30:48,176 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 11:30:48,177 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 11:30:48,178 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 11:30:48,179 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 11:30:48,179 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 11:30:48,180 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-10 11:30:48,180 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-10 11:30:48,180 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-10 11:30:48,182 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-10 11:30:48,182 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-10 11:30:48,183 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 11:30:48,198 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 11:30:48,199 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 11:30:48,200 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-10 11:30:48,200 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-10 11:30:48,200 INFO L133 SettingsManager]: * Use SBE=true [2018-10-10 11:30:48,201 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-10 11:30:48,201 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-10 11:30:48,201 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-10 11:30:48,201 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-10 11:30:48,201 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-10 11:30:48,202 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-10 11:30:48,202 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-10 11:30:48,202 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-10 11:30:48,202 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-10 11:30:48,202 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-10 11:30:48,203 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-10 11:30:48,203 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-10 11:30:48,203 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-10 11:30:48,203 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 11:30:48,203 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-10 11:30:48,204 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-10 11:30:48,204 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-10 11:30:48,204 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 11:30:48,204 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 11:30:48,204 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-10 11:30:48,205 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-10 11:30:48,205 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-10 11:30:48,205 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-10 11:30:48,205 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 11:30:48,263 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 11:30:48,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 11:30:48,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 11:30:48,288 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-10 11:30:48,288 INFO L276 PluginConnector]: CDTParser initialized [2018-10-10 11:30:48,289 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-10-10 11:30:48,625 INFO L217 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a2aa1b1/cb3416ccaa67493fb4f5121cacf487b2/FLAG3a0e3fc9e [2018-10-10 11:30:48,866 INFO L289 CDTParser]: Found 1 translation units. [2018-10-10 11:30:48,871 INFO L157 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-10-10 11:30:48,878 INFO L337 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a2aa1b1/cb3416ccaa67493fb4f5121cacf487b2/FLAG3a0e3fc9e [2018-10-10 11:30:48,896 INFO L345 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a2aa1b1/cb3416ccaa67493fb4f5121cacf487b2 [2018-10-10 11:30:48,909 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 11:30:48,910 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-10 11:30:48,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-10 11:30:48,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-10 11:30:48,916 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-10 11:30:48,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:30:48" (1/1) ... [2018-10-10 11:30:48,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1879af29 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 11:30:48,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:30:48" (1/1) ... [2018-10-10 11:30:48,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-10 11:30:48,952 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-10 11:30:49,175 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 11:30:49,195 INFO L189 MainTranslator]: Completed pre-run [2018-10-10 11:30:49,224 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 11:30:49,256 INFO L193 MainTranslator]: Completed translation [2018-10-10 11:30:49,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:49 WrapperNode [2018-10-10 11:30:49,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-10 11:30:49,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-10 11:30:49,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-10 11:30:49,261 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-10 11:30:49,272 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 11:30:49,288 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 11:30:49,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-10 11:30:49,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 11:30:49,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 11:30:49,340 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 11:30:49,351 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 11:30:49,351 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 11:30:49,356 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 11:30:49,357 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 11:30:49,373 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 11:30:49,380 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 11:30:49,382 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 11:30:49,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 11:30:49,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 11:30:49,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 11:30:49,386 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 11:30:49,387 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 11:30:49,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 11:30:49,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 11:30:50,135 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 11:30:50,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:30:50 BoogieIcfgContainer [2018-10-10 11:30:50,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 11:30:50,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 11:30:50,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 11:30:50,140 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 11:30:50,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 11:30:48" (1/3) ... [2018-10-10 11:30:50,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359ce777 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 11:30:50,142 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 11:30:50,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359ce777 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 11:30:50,142 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 11:30:50,144 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-10-10 11:30:50,154 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-10 11:30:50,163 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-10-10 11:30:50,179 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2018-10-10 11:30:50,206 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 11:30:50,207 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 11:30:50,207 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 11:30:50,207 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-10 11:30:50,207 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 11:30:50,207 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 11:30:50,208 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 11:30:50,208 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 11:30:50,208 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 11:30:50,232 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-10-10 11:30:50,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-10 11:30:50,241 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:50,242 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:30:50,244 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:50,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:50,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1805952520, now seen corresponding path program 1 times [2018-10-10 11:30:50,254 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:50,255 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 11:30:50,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:50,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:50,381 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 11:30:50,381 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:30:50,385 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:30:50,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-10 11:30:50,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 11:30:50,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 11:30:50,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 11:30:50,412 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2018-10-10 11:30:50,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:30:50,544 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2018-10-10 11:30:50,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 11:30:50,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-10 11:30:50,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:30:50,557 INFO L225 Difference]: With dead ends: 67 [2018-10-10 11:30:50,557 INFO L226 Difference]: Without dead ends: 63 [2018-10-10 11:30:50,559 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 11:30:50,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-10 11:30:50,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2018-10-10 11:30:50,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-10 11:30:50,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-10-10 11:30:50,598 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 7 [2018-10-10 11:30:50,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:30:50,598 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-10-10 11:30:50,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 11:30:50,599 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-10-10 11:30:50,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-10 11:30:50,599 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:50,599 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:30:50,601 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:50,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:50,601 INFO L82 PathProgramCache]: Analyzing trace with hash 148998123, now seen corresponding path program 1 times [2018-10-10 11:30:50,602 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:50,602 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 11:30:50,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:50,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:50,692 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 11:30:50,692 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:30:50,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:30:50,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 11:30:50,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 11:30:50,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 11:30:50,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 11:30:50,701 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 3 states. [2018-10-10 11:30:50,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:30:50,888 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2018-10-10 11:30:50,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 11:30:50,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-10-10 11:30:50,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:30:50,891 INFO L225 Difference]: With dead ends: 68 [2018-10-10 11:30:50,891 INFO L226 Difference]: Without dead ends: 68 [2018-10-10 11:30:50,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 11:30:50,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-10 11:30:50,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 40. [2018-10-10 11:30:50,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-10 11:30:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-10-10 11:30:50,899 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2018-10-10 11:30:50,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:30:50,900 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-10-10 11:30:50,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 11:30:50,900 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-10-10 11:30:50,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-10 11:30:50,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:50,901 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:30:50,901 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:50,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:50,902 INFO L82 PathProgramCache]: Analyzing trace with hash 149953326, now seen corresponding path program 1 times [2018-10-10 11:30:50,902 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:50,903 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 11:30:50,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:50,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:51,000 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-10 11:30:51,002 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 11:30:51,016 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 11:30:51,017 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-10-10 11:30:51,212 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 11:30:51,213 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:30:51,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:30:51,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-10 11:30:51,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-10 11:30:51,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-10 11:30:51,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-10 11:30:51,221 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 5 states. [2018-10-10 11:30:51,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:30:51,558 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2018-10-10 11:30:51,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-10 11:30:51,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-10-10 11:30:51,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:30:51,563 INFO L225 Difference]: With dead ends: 64 [2018-10-10 11:30:51,563 INFO L226 Difference]: Without dead ends: 64 [2018-10-10 11:30:51,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-10 11:30:51,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-10 11:30:51,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 39. [2018-10-10 11:30:51,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-10 11:30:51,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2018-10-10 11:30:51,571 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 8 [2018-10-10 11:30:51,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:30:51,572 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2018-10-10 11:30:51,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-10 11:30:51,572 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2018-10-10 11:30:51,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-10 11:30:51,572 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:51,573 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:30:51,573 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:51,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:51,574 INFO L82 PathProgramCache]: Analyzing trace with hash 353536214, now seen corresponding path program 1 times [2018-10-10 11:30:51,574 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:51,574 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 11:30:51,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:51,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:51,712 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 11:30:51,712 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:30:51,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:30:51,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 11:30:51,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 11:30:51,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 11:30:51,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 11:30:51,719 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 3 states. [2018-10-10 11:30:51,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:30:51,761 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2018-10-10 11:30:51,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 11:30:51,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-10-10 11:30:51,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:30:51,763 INFO L225 Difference]: With dead ends: 43 [2018-10-10 11:30:51,764 INFO L226 Difference]: Without dead ends: 43 [2018-10-10 11:30:51,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 11:30:51,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-10 11:30:51,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-10-10 11:30:51,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-10 11:30:51,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-10-10 11:30:51,769 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 9 [2018-10-10 11:30:51,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:30:51,769 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-10-10 11:30:51,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 11:30:51,769 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-10-10 11:30:51,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-10 11:30:51,770 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:51,770 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:30:51,771 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:51,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:51,771 INFO L82 PathProgramCache]: Analyzing trace with hash 353585866, now seen corresponding path program 1 times [2018-10-10 11:30:51,771 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:51,771 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 11:30:51,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:51,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:51,846 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-10 11:30:51,846 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 11:30:51,854 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 11:30:51,855 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-10-10 11:30:51,930 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 11:30:51,930 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:30:51,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:30:51,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-10 11:30:51,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-10 11:30:51,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-10 11:30:51,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-10 11:30:51,934 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 5 states. [2018-10-10 11:30:52,292 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-10 11:30:52,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:30:52,544 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2018-10-10 11:30:52,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-10 11:30:52,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-10-10 11:30:52,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:30:52,546 INFO L225 Difference]: With dead ends: 73 [2018-10-10 11:30:52,546 INFO L226 Difference]: Without dead ends: 73 [2018-10-10 11:30:52,549 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-10 11:30:52,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-10 11:30:52,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 41. [2018-10-10 11:30:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-10 11:30:52,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-10-10 11:30:52,559 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 9 [2018-10-10 11:30:52,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:30:52,562 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-10-10 11:30:52,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-10 11:30:52,562 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-10-10 11:30:52,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-10 11:30:52,563 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:52,563 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:30:52,563 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:52,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:52,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1905779327, now seen corresponding path program 1 times [2018-10-10 11:30:52,565 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:52,565 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:30:52,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:52,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 11:30:52,654 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-10 11:30:52,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 11:30:52,717 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 11:30:52,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2018-10-10 11:30:52,755 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_#Ultimate.alloc_old_#length_1| (store |v_#length_3| |v_ULTIMATE.start_main_~#b~0.base_1| (_ bv400 32))), (= |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_1 (_ bv0 32)), (= (_ 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 11:30:52,759 INFO L168 Benchmark]: Toolchain (without parser) took 3849.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -647.5 MB). Peak memory consumption was 121.7 MB. Max. memory is 7.1 GB. [2018-10-10 11:30:52,760 INFO L168 Benchmark]: CDTParser took 0.22 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 11:30:52,761 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.85 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 11:30:52,762 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.73 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 11:30:52,762 INFO L168 Benchmark]: Boogie Preprocessor took 45.57 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 11:30:52,763 INFO L168 Benchmark]: RCFGBuilder took 750.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -793.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2018-10-10 11:30:52,764 INFO L168 Benchmark]: TraceAbstraction took 2620.96 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: 135.5 MB). Peak memory consumption was 135.5 MB. Max. memory is 7.1 GB. [2018-10-10 11:30:52,769 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 345.85 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 78.73 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 45.57 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 750.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -793.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2620.96 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: 135.5 MB). Peak memory consumption was 135.5 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_#Ultimate.alloc_old_#length_1| (store |v_#length_3| |v_ULTIMATE.start_main_~#b~0.base_1| (_ bv400 32))), (= |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_1 (_ bv0 32)), (= (_ 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_#Ultimate.alloc_old_#length_1| (store |v_#length_3| |v_ULTIMATE.start_main_~#b~0.base_1| (_ bv400 32))), (= |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_1 (_ bv0 32)), (= (_ 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...