java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8168ed2-m [2018-04-11 22:23:35,273 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-11 22:23:35,274 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-11 22:23:35,288 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-11 22:23:35,289 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-11 22:23:35,289 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-11 22:23:35,290 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-11 22:23:35,292 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-11 22:23:35,294 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-11 22:23:35,295 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-11 22:23:35,297 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-11 22:23:35,297 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-11 22:23:35,298 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-11 22:23:35,299 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-11 22:23:35,300 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-11 22:23:35,302 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-11 22:23:35,304 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-11 22:23:35,306 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-11 22:23:35,307 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-11 22:23:35,308 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-11 22:23:35,311 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-11 22:23:35,311 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-11 22:23:35,311 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-11 22:23:35,312 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-11 22:23:35,313 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-11 22:23:35,315 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-11 22:23:35,315 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-11 22:23:35,315 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-11 22:23:35,316 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-11 22:23:35,316 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-11 22:23:35,317 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-11 22:23:35,317 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf [2018-04-11 22:23:35,339 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-11 22:23:35,339 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-11 22:23:35,340 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-11 22:23:35,340 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-11 22:23:35,340 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-11 22:23:35,341 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-11 22:23:35,341 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-11 22:23:35,341 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-11 22:23:35,341 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-04-11 22:23:35,341 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-11 22:23:35,341 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-11 22:23:35,342 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-11 22:23:35,342 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-11 22:23:35,342 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-11 22:23:35,342 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-11 22:23:35,342 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-11 22:23:35,342 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-11 22:23:35,343 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-11 22:23:35,343 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-11 22:23:35,343 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-11 22:23:35,343 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-11 22:23:35,343 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-11 22:23:35,343 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-11 22:23:35,344 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-11 22:23:35,344 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-11 22:23:35,344 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-11 22:23:35,344 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-11 22:23:35,344 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-11 22:23:35,344 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-11 22:23:35,345 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-11 22:23:35,345 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-11 22:23:35,345 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-11 22:23:35,345 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:35,345 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-11 22:23:35,346 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-11 22:23:35,346 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-11 22:23:35,346 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-11 22:23:35,346 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-11 22:23:35,378 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-11 22:23:35,388 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-11 22:23:35,392 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-11 22:23:35,393 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-11 22:23:35,394 INFO L276 PluginConnector]: CDTParser initialized [2018-04-11 22:23:35,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-04-11 22:23:35,715 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG2ee8bb27a [2018-04-11 22:23:35,848 INFO L287 CDTParser]: IsIndexed: true [2018-04-11 22:23:35,848 INFO L288 CDTParser]: Found 1 translation units. [2018-04-11 22:23:35,849 INFO L168 CDTParser]: Scanning ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-04-11 22:23:35,850 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-11 22:23:35,850 INFO L215 ultiparseSymbolTable]: [2018-04-11 22:23:35,850 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-11 22:23:35,851 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-04-11 22:23:35,851 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo ('foo') in ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-04-11 22:23:35,851 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-11 22:23:35,851 INFO L233 ultiparseSymbolTable]: [2018-04-11 22:23:35,867 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG2ee8bb27a [2018-04-11 22:23:35,872 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-11 22:23:35,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-11 22:23:35,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-11 22:23:35,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-11 22:23:35,880 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-11 22:23:35,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 10:23:35" (1/1) ... [2018-04-11 22:23:35,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a721b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:23:35, skipping insertion in model container [2018-04-11 22:23:35,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 10:23:35" (1/1) ... [2018-04-11 22:23:35,898 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 22:23:35,911 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 22:23:36,040 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 22:23:36,062 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 22:23:36,067 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-04-11 22:23:36,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:23:36 WrapperNode [2018-04-11 22:23:36,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-11 22:23:36,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-11 22:23:36,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-11 22:23:36,075 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-11 22:23:36,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:23:36" (1/1) ... [2018-04-11 22:23:36,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:23:36" (1/1) ... [2018-04-11 22:23:36,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:23:36" (1/1) ... [2018-04-11 22:23:36,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:23:36" (1/1) ... [2018-04-11 22:23:36,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:23:36" (1/1) ... [2018-04-11 22:23:36,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:23:36" (1/1) ... [2018-04-11 22:23:36,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:23:36" (1/1) ... [2018-04-11 22:23:36,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-11 22:23:36,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-11 22:23:36,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-11 22:23:36,106 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-11 22:23:36,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:23:36" (1/1) ... No working directory specified, using /storage/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 [2018-04-11 22:23:36,162 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-11 22:23:36,163 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-11 22:23:36,163 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo [2018-04-11 22:23:36,163 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-11 22:23:36,163 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo [2018-04-11 22:23:36,163 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-11 22:23:36,163 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-11 22:23:36,163 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-11 22:23:36,163 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-11 22:23:36,163 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-11 22:23:36,164 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-11 22:23:36,164 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-11 22:23:36,164 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-11 22:23:36,424 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-11 22:23:36,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 10:23:36 BoogieIcfgContainer [2018-04-11 22:23:36,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-11 22:23:36,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-11 22:23:36,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-11 22:23:36,428 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-11 22:23:36,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.04 10:23:35" (1/3) ... [2018-04-11 22:23:36,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1e2741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 10:23:36, skipping insertion in model container [2018-04-11 22:23:36,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:23:36" (2/3) ... [2018-04-11 22:23:36,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1e2741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 10:23:36, skipping insertion in model container [2018-04-11 22:23:36,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 10:23:36" (3/3) ... [2018-04-11 22:23:36,431 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-04-11 22:23:36,439 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-11 22:23:36,447 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-04-11 22:23:36,493 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-11 22:23:36,494 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-11 22:23:36,494 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-11 22:23:36,494 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-11 22:23:36,494 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-11 22:23:36,495 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-11 22:23:36,495 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-11 22:23:36,495 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-11 22:23:36,495 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-11 22:23:36,496 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-11 22:23:36,512 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2018-04-11 22:23:36,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-04-11 22:23:36,517 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:23:36,518 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:23:36,518 INFO L408 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:23:36,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1751798805, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:36,537 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:23:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:23:36,587 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:23:36,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:36,642 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:23:36,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:36,707 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:23:36,707 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2018-04-11 22:23:36,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-11 22:23:36,719 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-11 22:23:36,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-04-11 22:23:36,722 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 5 states. [2018-04-11 22:23:36,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:23:36,832 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2018-04-11 22:23:36,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-11 22:23:36,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-04-11 22:23:36,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:23:36,843 INFO L225 Difference]: With dead ends: 141 [2018-04-11 22:23:36,843 INFO L226 Difference]: Without dead ends: 84 [2018-04-11 22:23:36,846 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-04-11 22:23:36,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-04-11 22:23:36,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 68. [2018-04-11 22:23:36,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-04-11 22:23:36,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2018-04-11 22:23:36,895 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 16 [2018-04-11 22:23:36,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:23:36,896 INFO L459 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2018-04-11 22:23:36,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-11 22:23:36,896 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2018-04-11 22:23:36,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-04-11 22:23:36,897 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:23:36,897 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:23:36,897 INFO L408 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:23:36,898 INFO L82 PathProgramCache]: Analyzing trace with hash -177512800, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:36,911 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:23:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:23:36,935 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:23:36,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:36,947 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:23:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:37,003 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:23:37,004 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-04-11 22:23:37,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-11 22:23:37,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-11 22:23:37,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-11 22:23:37,006 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand 4 states. [2018-04-11 22:23:37,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:23:37,037 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2018-04-11 22:23:37,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-11 22:23:37,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-04-11 22:23:37,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:23:37,040 INFO L225 Difference]: With dead ends: 82 [2018-04-11 22:23:37,040 INFO L226 Difference]: Without dead ends: 81 [2018-04-11 22:23:37,041 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-11 22:23:37,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-04-11 22:23:37,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2018-04-11 22:23:37,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-04-11 22:23:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-04-11 22:23:37,048 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 25 [2018-04-11 22:23:37,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:23:37,048 INFO L459 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-04-11 22:23:37,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-11 22:23:37,049 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-04-11 22:23:37,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-04-11 22:23:37,050 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:23:37,050 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:23:37,050 INFO L408 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:23:37,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1207929453, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:37,063 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:23:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:23:37,082 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:23:37,106 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 [2018-04-11 22:23:37,108 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:23:37,110 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:23:37,110 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-11 22:23:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:37,128 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:23:37,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:37,166 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:23:37,166 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2018-04-11 22:23:37,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-11 22:23:37,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-11 22:23:37,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-04-11 22:23:37,167 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 6 states. [2018-04-11 22:23:37,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:23:37,275 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2018-04-11 22:23:37,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-11 22:23:37,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-04-11 22:23:37,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:23:37,277 INFO L225 Difference]: With dead ends: 71 [2018-04-11 22:23:37,277 INFO L226 Difference]: Without dead ends: 70 [2018-04-11 22:23:37,278 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-04-11 22:23:37,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-04-11 22:23:37,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-04-11 22:23:37,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-04-11 22:23:37,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2018-04-11 22:23:37,287 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 26 [2018-04-11 22:23:37,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:23:37,287 INFO L459 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2018-04-11 22:23:37,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-11 22:23:37,288 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2018-04-11 22:23:37,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-04-11 22:23:37,289 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:23:37,289 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:23:37,289 INFO L408 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:23:37,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1207929452, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:37,302 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:23:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:23:37,320 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:23:37,332 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 [2018-04-11 22:23:37,333 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:23:37,338 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:23:37,338 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:23:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:37,399 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:23:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:37,533 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:23:37,534 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2018-04-11 22:23:37,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-11 22:23:37,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-11 22:23:37,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-04-11 22:23:37,535 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 12 states. [2018-04-11 22:23:37,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:23:37,744 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2018-04-11 22:23:37,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-11 22:23:37,744 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2018-04-11 22:23:37,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:23:37,745 INFO L225 Difference]: With dead ends: 79 [2018-04-11 22:23:37,746 INFO L226 Difference]: Without dead ends: 78 [2018-04-11 22:23:37,746 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2018-04-11 22:23:37,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-04-11 22:23:37,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 71. [2018-04-11 22:23:37,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-04-11 22:23:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-04-11 22:23:37,755 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 26 [2018-04-11 22:23:37,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:23:37,756 INFO L459 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-04-11 22:23:37,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-11 22:23:37,756 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-04-11 22:23:37,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-04-11 22:23:37,757 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:23:37,757 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:23:37,757 INFO L408 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:23:37,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1743777157, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:37,764 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:23:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:23:37,784 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:23:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:37,800 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:23:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:37,899 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:23:37,899 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-04-11 22:23:37,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-11 22:23:37,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-11 22:23:37,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-04-11 22:23:37,900 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 8 states. [2018-04-11 22:23:38,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:23:38,088 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2018-04-11 22:23:38,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-11 22:23:38,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2018-04-11 22:23:38,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:23:38,090 INFO L225 Difference]: With dead ends: 105 [2018-04-11 22:23:38,090 INFO L226 Difference]: Without dead ends: 104 [2018-04-11 22:23:38,090 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-04-11 22:23:38,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-04-11 22:23:38,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 88. [2018-04-11 22:23:38,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-04-11 22:23:38,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2018-04-11 22:23:38,097 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 34 [2018-04-11 22:23:38,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:23:38,097 INFO L459 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2018-04-11 22:23:38,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-11 22:23:38,098 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2018-04-11 22:23:38,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-04-11 22:23:38,098 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:23:38,098 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:23:38,098 INFO L408 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:23:38,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1777482929, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:38,104 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:23:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:23:38,123 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:23:38,131 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 [2018-04-11 22:23:38,132 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:23:38,140 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:23:38,141 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:23:38,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:38,203 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:23:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:38,319 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:23:38,320 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-04-11 22:23:38,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-11 22:23:38,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-11 22:23:38,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2018-04-11 22:23:38,321 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand 16 states. [2018-04-11 22:23:38,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:23:38,592 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2018-04-11 22:23:38,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-04-11 22:23:38,592 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 35 [2018-04-11 22:23:38,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:23:38,594 INFO L225 Difference]: With dead ends: 99 [2018-04-11 22:23:38,594 INFO L226 Difference]: Without dead ends: 98 [2018-04-11 22:23:38,595 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2018-04-11 22:23:38,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-04-11 22:23:38,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2018-04-11 22:23:38,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-04-11 22:23:38,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2018-04-11 22:23:38,604 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 35 [2018-04-11 22:23:38,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:23:38,604 INFO L459 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2018-04-11 22:23:38,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-11 22:23:38,605 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2018-04-11 22:23:38,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-04-11 22:23:38,606 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:23:38,606 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:23:38,606 INFO L408 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:23:38,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1833243520, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:38,615 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:23:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:23:38,632 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:23:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:38,648 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:23:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:38,716 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:23:38,716 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-04-11 22:23:38,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-11 22:23:38,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-11 22:23:38,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-04-11 22:23:38,717 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand 8 states. [2018-04-11 22:23:38,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:23:38,780 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2018-04-11 22:23:38,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-11 22:23:38,780 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2018-04-11 22:23:38,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:23:38,781 INFO L225 Difference]: With dead ends: 165 [2018-04-11 22:23:38,781 INFO L226 Difference]: Without dead ends: 89 [2018-04-11 22:23:38,781 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2018-04-11 22:23:38,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-04-11 22:23:38,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-04-11 22:23:38,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-04-11 22:23:38,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2018-04-11 22:23:38,790 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 37 [2018-04-11 22:23:38,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:23:38,791 INFO L459 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2018-04-11 22:23:38,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-11 22:23:38,791 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2018-04-11 22:23:38,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-04-11 22:23:38,792 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:23:38,793 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:23:38,793 INFO L408 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:23:38,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1745832933, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:38,799 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:23:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:23:38,816 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:23:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:38,848 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:23:38,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:38,928 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:23:38,928 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-04-11 22:23:38,928 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-11 22:23:38,929 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-11 22:23:38,929 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-04-11 22:23:38,929 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand 12 states. [2018-04-11 22:23:39,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:23:39,031 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2018-04-11 22:23:39,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-04-11 22:23:39,032 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2018-04-11 22:23:39,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:23:39,033 INFO L225 Difference]: With dead ends: 168 [2018-04-11 22:23:39,033 INFO L226 Difference]: Without dead ends: 89 [2018-04-11 22:23:39,034 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2018-04-11 22:23:39,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-04-11 22:23:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-04-11 22:23:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-04-11 22:23:39,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2018-04-11 22:23:39,042 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 46 [2018-04-11 22:23:39,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:23:39,042 INFO L459 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2018-04-11 22:23:39,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-11 22:23:39,043 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2018-04-11 22:23:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-04-11 22:23:39,044 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:23:39,044 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:23:39,044 INFO L408 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:23:39,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1585197083, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:39,051 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:23:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:23:39,070 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:23:39,125 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:39,125 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:23:39,202 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:39,222 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:23:39,222 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-04-11 22:23:39,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-11 22:23:39,222 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-11 22:23:39,223 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-04-11 22:23:39,223 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand 16 states. [2018-04-11 22:23:39,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:23:39,681 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2018-04-11 22:23:39,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-11 22:23:39,682 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 52 [2018-04-11 22:23:39,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:23:39,683 INFO L225 Difference]: With dead ends: 146 [2018-04-11 22:23:39,683 INFO L226 Difference]: Without dead ends: 145 [2018-04-11 22:23:39,684 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2018-04-11 22:23:39,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-04-11 22:23:39,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 124. [2018-04-11 22:23:39,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-04-11 22:23:39,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2018-04-11 22:23:39,693 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 52 [2018-04-11 22:23:39,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:23:39,693 INFO L459 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2018-04-11 22:23:39,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-11 22:23:39,693 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2018-04-11 22:23:39,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-04-11 22:23:39,694 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:23:39,695 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:23:39,695 INFO L408 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:23:39,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1896469265, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:39,703 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:23:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:23:39,720 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:23:39,723 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 [2018-04-11 22:23:39,723 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:23:39,726 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:23:39,726 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:23:39,848 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:39,848 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:23:40,003 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:40,023 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:23:40,023 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2018-04-11 22:23:40,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-04-11 22:23:40,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-04-11 22:23:40,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2018-04-11 22:23:40,024 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand 24 states. [2018-04-11 22:23:40,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:23:40,775 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2018-04-11 22:23:40,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-04-11 22:23:40,775 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 53 [2018-04-11 22:23:40,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:23:40,776 INFO L225 Difference]: With dead ends: 138 [2018-04-11 22:23:40,776 INFO L226 Difference]: Without dead ends: 137 [2018-04-11 22:23:40,777 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=441, Invalid=1539, Unknown=0, NotChecked=0, Total=1980 [2018-04-11 22:23:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-04-11 22:23:40,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2018-04-11 22:23:40,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-04-11 22:23:40,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2018-04-11 22:23:40,784 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 53 [2018-04-11 22:23:40,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:23:40,784 INFO L459 AbstractCegarLoop]: Abstraction has 125 states and 132 transitions. [2018-04-11 22:23:40,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-04-11 22:23:40,784 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 132 transitions. [2018-04-11 22:23:40,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-04-11 22:23:40,786 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:23:40,786 INFO L355 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:23:40,786 INFO L408 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:23:40,786 INFO L82 PathProgramCache]: Analyzing trace with hash -100491707, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:40,800 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:23:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:23:40,818 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:23:40,895 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:40,895 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:23:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:41,041 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:23:41,042 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-04-11 22:23:41,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-04-11 22:23:41,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-04-11 22:23:41,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2018-04-11 22:23:41,042 INFO L87 Difference]: Start difference. First operand 125 states and 132 transitions. Second operand 20 states. [2018-04-11 22:23:41,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:23:41,346 INFO L93 Difference]: Finished difference Result 240 states and 254 transitions. [2018-04-11 22:23:41,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-04-11 22:23:41,347 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2018-04-11 22:23:41,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:23:41,348 INFO L225 Difference]: With dead ends: 240 [2018-04-11 22:23:41,348 INFO L226 Difference]: Without dead ends: 125 [2018-04-11 22:23:41,350 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=432, Invalid=900, Unknown=0, NotChecked=0, Total=1332 [2018-04-11 22:23:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-04-11 22:23:41,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-04-11 22:23:41,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-04-11 22:23:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 128 transitions. [2018-04-11 22:23:41,357 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 128 transitions. Word has length 64 [2018-04-11 22:23:41,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:23:41,357 INFO L459 AbstractCegarLoop]: Abstraction has 125 states and 128 transitions. [2018-04-11 22:23:41,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-04-11 22:23:41,358 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 128 transitions. [2018-04-11 22:23:41,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-04-11 22:23:41,359 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:23:41,359 INFO L355 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:23:41,359 INFO L408 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:23:41,359 INFO L82 PathProgramCache]: Analyzing trace with hash -96334683, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:41,369 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:23:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:23:41,392 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:23:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:41,519 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:23:41,779 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:41,799 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:23:41,799 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-04-11 22:23:41,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-11 22:23:41,799 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-11 22:23:41,800 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2018-04-11 22:23:41,800 INFO L87 Difference]: Start difference. First operand 125 states and 128 transitions. Second operand 32 states. [2018-04-11 22:23:42,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:23:42,958 INFO L93 Difference]: Finished difference Result 234 states and 252 transitions. [2018-04-11 22:23:42,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-11 22:23:42,958 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 88 [2018-04-11 22:23:42,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:23:42,960 INFO L225 Difference]: With dead ends: 234 [2018-04-11 22:23:42,960 INFO L226 Difference]: Without dead ends: 233 [2018-04-11 22:23:42,961 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1096, Invalid=3194, Unknown=0, NotChecked=0, Total=4290 [2018-04-11 22:23:42,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-04-11 22:23:42,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 196. [2018-04-11 22:23:42,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-04-11 22:23:42,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 214 transitions. [2018-04-11 22:23:42,969 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 214 transitions. Word has length 88 [2018-04-11 22:23:42,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:23:42,969 INFO L459 AbstractCegarLoop]: Abstraction has 196 states and 214 transitions. [2018-04-11 22:23:42,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-11 22:23:42,969 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 214 transitions. [2018-04-11 22:23:42,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-04-11 22:23:42,970 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:23:42,970 INFO L355 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:23:42,970 INFO L408 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:23:42,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1308592175, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:42,976 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:23:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:23:43,004 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:23:43,008 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 [2018-04-11 22:23:43,008 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:23:43,011 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:23:43,011 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:23:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:43,233 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:23:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:43,655 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:23:43,655 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-04-11 22:23:43,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-04-11 22:23:43,656 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-04-11 22:23:43,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1336, Unknown=0, NotChecked=0, Total=1560 [2018-04-11 22:23:43,657 INFO L87 Difference]: Start difference. First operand 196 states and 214 transitions. Second operand 40 states. [2018-04-11 22:23:45,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:23:45,954 INFO L93 Difference]: Finished difference Result 222 states and 240 transitions. [2018-04-11 22:23:45,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-04-11 22:23:45,954 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 89 [2018-04-11 22:23:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:23:45,956 INFO L225 Difference]: With dead ends: 222 [2018-04-11 22:23:45,956 INFO L226 Difference]: Without dead ends: 221 [2018-04-11 22:23:45,957 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1432 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1521, Invalid=5619, Unknown=0, NotChecked=0, Total=7140 [2018-04-11 22:23:45,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-04-11 22:23:45,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 197. [2018-04-11 22:23:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-04-11 22:23:45,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 208 transitions. [2018-04-11 22:23:45,965 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 208 transitions. Word has length 89 [2018-04-11 22:23:45,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:23:45,965 INFO L459 AbstractCegarLoop]: Abstraction has 197 states and 208 transitions. [2018-04-11 22:23:45,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-04-11 22:23:45,965 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 208 transitions. [2018-04-11 22:23:45,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-04-11 22:23:45,966 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:23:45,966 INFO L355 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:23:45,966 INFO L408 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:23:45,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1114916091, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:45,972 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:23:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:23:45,997 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:23:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 4 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:46,363 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:23:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 4 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:46,679 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:23:46,679 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2018-04-11 22:23:46,679 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-04-11 22:23:46,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-04-11 22:23:46,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=916, Unknown=0, NotChecked=0, Total=1260 [2018-04-11 22:23:46,680 INFO L87 Difference]: Start difference. First operand 197 states and 208 transitions. Second operand 36 states. [2018-04-11 22:23:47,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:23:47,522 INFO L93 Difference]: Finished difference Result 384 states and 406 transitions. [2018-04-11 22:23:47,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-04-11 22:23:47,522 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 100 [2018-04-11 22:23:47,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:23:47,523 INFO L225 Difference]: With dead ends: 384 [2018-04-11 22:23:47,523 INFO L226 Difference]: Without dead ends: 197 [2018-04-11 22:23:47,526 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2018-04-11 22:23:47,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-04-11 22:23:47,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-04-11 22:23:47,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-04-11 22:23:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 200 transitions. [2018-04-11 22:23:47,534 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 200 transitions. Word has length 100 [2018-04-11 22:23:47,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:23:47,534 INFO L459 AbstractCegarLoop]: Abstraction has 197 states and 200 transitions. [2018-04-11 22:23:47,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-04-11 22:23:47,534 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 200 transitions. [2018-04-11 22:23:47,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-04-11 22:23:47,535 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:23:47,535 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:23:47,535 INFO L408 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:23:47,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1027630629, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:47,547 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:23:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:23:47,579 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:23:47,940 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:47,940 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:23:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:49,140 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:23:49,152 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-04-11 22:23:49,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-11 22:23:49,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-11 22:23:49,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=3426, Unknown=0, NotChecked=0, Total=4032 [2018-04-11 22:23:49,154 INFO L87 Difference]: Start difference. First operand 197 states and 200 transitions. Second operand 64 states. [2018-04-11 22:23:54,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:23:54,799 INFO L93 Difference]: Finished difference Result 410 states and 444 transitions. [2018-04-11 22:23:54,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-11 22:23:54,799 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 160 [2018-04-11 22:23:54,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:23:54,801 INFO L225 Difference]: With dead ends: 410 [2018-04-11 22:23:54,802 INFO L226 Difference]: Without dead ends: 409 [2018-04-11 22:23:54,806 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3452 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=4624, Invalid=14282, Unknown=0, NotChecked=0, Total=18906 [2018-04-11 22:23:54,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-04-11 22:23:54,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 340. [2018-04-11 22:23:54,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-04-11 22:23:54,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 374 transitions. [2018-04-11 22:23:54,821 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 374 transitions. Word has length 160 [2018-04-11 22:23:54,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:23:54,822 INFO L459 AbstractCegarLoop]: Abstraction has 340 states and 374 transitions. [2018-04-11 22:23:54,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-11 22:23:54,822 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 374 transitions. [2018-04-11 22:23:54,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-04-11 22:23:54,823 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:23:54,824 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:23:54,824 INFO L408 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:23:54,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1791778479, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:54,833 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:23:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:23:54,867 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:23:54,873 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 [2018-04-11 22:23:54,874 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:23:54,876 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:23:54,877 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:23:55,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 0 proven. 1005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:55,537 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:23:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 0 proven. 1005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:23:56,692 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:23:56,692 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2018-04-11 22:23:56,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-04-11 22:23:56,693 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-04-11 22:23:56,694 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=688, Invalid=4424, Unknown=0, NotChecked=0, Total=5112 [2018-04-11 22:23:56,694 INFO L87 Difference]: Start difference. First operand 340 states and 374 transitions. Second operand 72 states. [2018-04-11 22:24:05,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:24:05,521 INFO L93 Difference]: Finished difference Result 390 states and 424 transitions. [2018-04-11 22:24:05,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-04-11 22:24:05,521 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 161 [2018-04-11 22:24:05,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:24:05,524 INFO L225 Difference]: With dead ends: 390 [2018-04-11 22:24:05,524 INFO L226 Difference]: Without dead ends: 389 [2018-04-11 22:24:05,529 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5988 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=5601, Invalid=21459, Unknown=0, NotChecked=0, Total=27060 [2018-04-11 22:24:05,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-04-11 22:24:05,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 341. [2018-04-11 22:24:05,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-04-11 22:24:05,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 360 transitions. [2018-04-11 22:24:05,539 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 360 transitions. Word has length 161 [2018-04-11 22:24:05,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:24:05,539 INFO L459 AbstractCegarLoop]: Abstraction has 341 states and 360 transitions. [2018-04-11 22:24:05,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-04-11 22:24:05,539 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 360 transitions. [2018-04-11 22:24:05,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-04-11 22:24:05,540 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:24:05,541 INFO L355 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:24:05,541 INFO L408 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:24:05,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1112528005, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:24:05,552 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:24:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:24:05,587 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:24:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 4 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:24:06,008 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:24:06,699 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 4 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:24:06,722 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:24:06,722 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 68 [2018-04-11 22:24:06,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-04-11 22:24:06,723 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-04-11 22:24:06,723 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1192, Invalid=3364, Unknown=0, NotChecked=0, Total=4556 [2018-04-11 22:24:06,723 INFO L87 Difference]: Start difference. First operand 341 states and 360 transitions. Second operand 68 states. [2018-04-11 22:24:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:24:09,946 INFO L93 Difference]: Finished difference Result 672 states and 710 transitions. [2018-04-11 22:24:09,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-04-11 22:24:09,946 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 172 [2018-04-11 22:24:09,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:24:09,948 INFO L225 Difference]: With dead ends: 672 [2018-04-11 22:24:09,948 INFO L226 Difference]: Without dead ends: 341 [2018-04-11 22:24:09,950 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6512 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=6516, Invalid=14364, Unknown=0, NotChecked=0, Total=20880 [2018-04-11 22:24:09,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-04-11 22:24:09,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-04-11 22:24:09,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-04-11 22:24:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 344 transitions. [2018-04-11 22:24:09,959 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 344 transitions. Word has length 172 [2018-04-11 22:24:09,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:24:09,959 INFO L459 AbstractCegarLoop]: Abstraction has 341 states and 344 transitions. [2018-04-11 22:24:09,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-04-11 22:24:09,960 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 344 transitions. [2018-04-11 22:24:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-04-11 22:24:09,961 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:24:09,961 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:24:09,961 INFO L408 AbstractCegarLoop]: === Iteration 18 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:24:09,961 INFO L82 PathProgramCache]: Analyzing trace with hash -695953115, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:24:09,970 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:24:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:24:10,032 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:24:11,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:24:11,298 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:24:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:24:14,799 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:24:14,799 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-04-11 22:24:14,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-04-11 22:24:14,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-04-11 22:24:14,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=14979, Unknown=0, NotChecked=0, Total=16256 [2018-04-11 22:24:14,802 INFO L87 Difference]: Start difference. First operand 341 states and 344 transitions. Second operand 128 states. [2018-04-11 22:24:20,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:24:20,463 INFO L93 Difference]: Finished difference Result 359 states and 363 transitions. [2018-04-11 22:24:20,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-04-11 22:24:20,463 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 304 [2018-04-11 22:24:20,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:24:20,465 INFO L225 Difference]: With dead ends: 359 [2018-04-11 22:24:20,465 INFO L226 Difference]: Without dead ends: 358 [2018-04-11 22:24:20,467 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3844 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=3540, Invalid=32370, Unknown=0, NotChecked=0, Total=35910 [2018-04-11 22:24:20,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-04-11 22:24:20,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 349. [2018-04-11 22:24:20,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-04-11 22:24:20,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 353 transitions. [2018-04-11 22:24:20,482 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 353 transitions. Word has length 304 [2018-04-11 22:24:20,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:24:20,483 INFO L459 AbstractCegarLoop]: Abstraction has 349 states and 353 transitions. [2018-04-11 22:24:20,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-04-11 22:24:20,483 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 353 transitions. [2018-04-11 22:24:20,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-04-11 22:24:20,485 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:24:20,485 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:24:20,485 INFO L408 AbstractCegarLoop]: === Iteration 19 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:24:20,485 INFO L82 PathProgramCache]: Analyzing trace with hash -99710033, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:24:20,500 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:24:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:24:20,573 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:24:20,576 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 [2018-04-11 22:24:20,577 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:24:20,591 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:24:20,591 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:24:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4309 backedges. 0 proven. 4309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:24:22,833 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:24:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4309 backedges. 0 proven. 4309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:24:26,317 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:24:26,317 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2018-04-11 22:24:26,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-04-11 22:24:26,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-04-11 22:24:26,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1423, Invalid=16937, Unknown=0, NotChecked=0, Total=18360 [2018-04-11 22:24:26,318 INFO L87 Difference]: Start difference. First operand 349 states and 353 transitions. Second operand 136 states. [2018-04-11 22:24:36,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:24:36,458 INFO L93 Difference]: Finished difference Result 358 states and 362 transitions. [2018-04-11 22:24:36,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-04-11 22:24:36,458 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 305 [2018-04-11 22:24:36,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:24:36,460 INFO L225 Difference]: With dead ends: 358 [2018-04-11 22:24:36,460 INFO L226 Difference]: Without dead ends: 357 [2018-04-11 22:24:36,462 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11056 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=4956, Invalid=49100, Unknown=0, NotChecked=0, Total=54056 [2018-04-11 22:24:36,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-04-11 22:24:36,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 350. [2018-04-11 22:24:36,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2018-04-11 22:24:36,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 354 transitions. [2018-04-11 22:24:36,475 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 354 transitions. Word has length 305 [2018-04-11 22:24:36,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:24:36,475 INFO L459 AbstractCegarLoop]: Abstraction has 350 states and 354 transitions. [2018-04-11 22:24:36,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-04-11 22:24:36,475 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 354 transitions. [2018-04-11 22:24:36,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-04-11 22:24:36,476 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:24:36,477 INFO L355 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:24:36,477 INFO L408 AbstractCegarLoop]: === Iteration 20 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:24:36,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1086306464, now seen corresponding path program 6 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:24:36,484 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:24:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:24:36,545 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:24:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 4560 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:24:38,028 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:24:40,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 4560 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:24:40,389 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:24:40,390 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [69, 69] imperfect sequences [] total 134 [2018-04-11 22:24:40,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-04-11 22:24:40,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-04-11 22:24:40,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3467, Invalid=14355, Unknown=0, NotChecked=0, Total=17822 [2018-04-11 22:24:40,391 INFO L87 Difference]: Start difference. First operand 350 states and 354 transitions. Second operand 134 states. [2018-04-11 22:24:44,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:24:44,276 INFO L93 Difference]: Finished difference Result 683 states and 692 transitions. [2018-04-11 22:24:44,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-04-11 22:24:44,276 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 313 [2018-04-11 22:24:44,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:24:44,278 INFO L225 Difference]: With dead ends: 683 [2018-04-11 22:24:44,278 INFO L226 Difference]: Without dead ends: 349 [2018-04-11 22:24:44,281 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 491 SyntacticMatches, 2 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12977 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=13102, Invalid=40954, Unknown=0, NotChecked=0, Total=54056 [2018-04-11 22:24:44,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-04-11 22:24:44,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 346. [2018-04-11 22:24:44,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-04-11 22:24:44,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 349 transitions. [2018-04-11 22:24:44,290 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 349 transitions. Word has length 313 [2018-04-11 22:24:44,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:24:44,290 INFO L459 AbstractCegarLoop]: Abstraction has 346 states and 349 transitions. [2018-04-11 22:24:44,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-04-11 22:24:44,290 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 349 transitions. [2018-04-11 22:24:44,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-04-11 22:24:44,291 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:24:44,291 INFO L355 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:24:44,291 INFO L408 AbstractCegarLoop]: === Iteration 21 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:24:44,292 INFO L82 PathProgramCache]: Analyzing trace with hash 803178373, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:24:44,309 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:24:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:24:44,372 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:24:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4251 backedges. 4 proven. 4247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:24:45,736 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:24:45,992 WARN L148 SmtUtils]: Spent 222ms on a formula simplification that was a NOOP. DAG size: 165 [2018-04-11 22:24:46,216 WARN L148 SmtUtils]: Spent 219ms on a formula simplification that was a NOOP. DAG size: 165 [2018-04-11 22:24:47,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4251 backedges. 4 proven. 4247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:24:47,486 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:24:47,486 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 131 [2018-04-11 22:24:47,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-04-11 22:24:47,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-04-11 22:24:47,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3396, Invalid=13634, Unknown=0, NotChecked=0, Total=17030 [2018-04-11 22:24:47,489 INFO L87 Difference]: Start difference. First operand 346 states and 349 transitions. Second operand 131 states. [2018-04-11 22:24:49,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:24:49,507 INFO L93 Difference]: Finished difference Result 679 states and 685 transitions. [2018-04-11 22:24:49,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-04-11 22:24:49,508 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 316 [2018-04-11 22:24:49,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:24:49,511 INFO L225 Difference]: With dead ends: 679 [2018-04-11 22:24:49,511 INFO L226 Difference]: Without dead ends: 346 [2018-04-11 22:24:49,513 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 500 SyntacticMatches, 2 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14761 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=9634, Invalid=27808, Unknown=0, NotChecked=0, Total=37442 [2018-04-11 22:24:49,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-04-11 22:24:49,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2018-04-11 22:24:49,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-04-11 22:24:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 348 transitions. [2018-04-11 22:24:49,529 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 348 transitions. Word has length 316 [2018-04-11 22:24:49,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:24:49,530 INFO L459 AbstractCegarLoop]: Abstraction has 346 states and 348 transitions. [2018-04-11 22:24:49,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-04-11 22:24:49,530 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 348 transitions. [2018-04-11 22:24:49,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-04-11 22:24:49,532 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:24:49,532 INFO L355 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 32, 32, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:24:49,532 INFO L408 AbstractCegarLoop]: === Iteration 22 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:24:49,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1873262976, now seen corresponding path program 6 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:24:49,541 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:24:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:24:49,599 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:24:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4532 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-04-11 22:24:49,680 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:24:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4532 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-04-11 22:24:49,773 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:24:49,773 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-04-11 22:24:49,774 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-11 22:24:49,774 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-11 22:24:49,774 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-04-11 22:24:49,774 INFO L87 Difference]: Start difference. First operand 346 states and 348 transitions. Second operand 9 states. [2018-04-11 22:24:49,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:24:49,831 INFO L93 Difference]: Finished difference Result 362 states and 364 transitions. [2018-04-11 22:24:49,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-11 22:24:49,831 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 325 [2018-04-11 22:24:49,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:24:49,833 INFO L225 Difference]: With dead ends: 362 [2018-04-11 22:24:49,833 INFO L226 Difference]: Without dead ends: 361 [2018-04-11 22:24:49,833 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 641 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2018-04-11 22:24:49,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-04-11 22:24:49,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 343. [2018-04-11 22:24:49,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-04-11 22:24:49,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 345 transitions. [2018-04-11 22:24:49,844 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 345 transitions. Word has length 325 [2018-04-11 22:24:49,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:24:49,845 INFO L459 AbstractCegarLoop]: Abstraction has 343 states and 345 transitions. [2018-04-11 22:24:49,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-11 22:24:49,845 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 345 transitions. [2018-04-11 22:24:49,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-04-11 22:24:49,847 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:24:49,847 INFO L355 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 32, 32, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:24:49,848 INFO L408 AbstractCegarLoop]: === Iteration 23 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:24:49,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1230984506, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:24:49,858 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:24:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:24:49,941 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:24:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-04-11 22:24:50,046 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:24:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-04-11 22:24:50,172 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:24:50,173 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-04-11 22:24:50,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-11 22:24:50,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-11 22:24:50,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-04-11 22:24:50,174 INFO L87 Difference]: Start difference. First operand 343 states and 345 transitions. Second operand 8 states. [2018-04-11 22:24:50,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:24:50,339 INFO L93 Difference]: Finished difference Result 395 states and 401 transitions. [2018-04-11 22:24:50,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-11 22:24:50,339 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 332 [2018-04-11 22:24:50,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:24:50,342 INFO L225 Difference]: With dead ends: 395 [2018-04-11 22:24:50,342 INFO L226 Difference]: Without dead ends: 375 [2018-04-11 22:24:50,343 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-04-11 22:24:50,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-04-11 22:24:50,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 365. [2018-04-11 22:24:50,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-04-11 22:24:50,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 369 transitions. [2018-04-11 22:24:50,360 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 369 transitions. Word has length 332 [2018-04-11 22:24:50,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:24:50,361 INFO L459 AbstractCegarLoop]: Abstraction has 365 states and 369 transitions. [2018-04-11 22:24:50,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-11 22:24:50,361 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 369 transitions. [2018-04-11 22:24:50,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2018-04-11 22:24:50,372 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:24:50,372 INFO L355 BasicCegarLoop]: trace histogram [99, 96, 96, 96, 96, 96, 96, 96, 96, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:24:50,373 INFO L408 AbstractCegarLoop]: === Iteration 24 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:24:50,373 INFO L82 PathProgramCache]: Analyzing trace with hash 2111731802, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:24:50,381 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:24:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:24:50,586 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:24:50,886 INFO L134 CoverageAnalysis]: Checked inductivity of 41685 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 41646 trivial. 0 not checked. [2018-04-11 22:24:50,887 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:24:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 41685 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 41646 trivial. 0 not checked. [2018-04-11 22:24:51,299 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:24:51,300 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-04-11 22:24:51,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-11 22:24:51,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-11 22:24:51,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2018-04-11 22:24:51,301 INFO L87 Difference]: Start difference. First operand 365 states and 369 transitions. Second operand 16 states. [2018-04-11 22:24:51,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:24:51,477 INFO L93 Difference]: Finished difference Result 439 states and 451 transitions. [2018-04-11 22:24:51,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-11 22:24:51,479 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 950 [2018-04-11 22:24:51,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:24:51,481 INFO L225 Difference]: With dead ends: 439 [2018-04-11 22:24:51,481 INFO L226 Difference]: Without dead ends: 419 [2018-04-11 22:24:51,482 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1911 GetRequests, 1885 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=259, Invalid=497, Unknown=0, NotChecked=0, Total=756 [2018-04-11 22:24:51,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-04-11 22:24:51,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 409. [2018-04-11 22:24:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-04-11 22:24:51,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 417 transitions. [2018-04-11 22:24:51,506 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 417 transitions. Word has length 950 [2018-04-11 22:24:51,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:24:51,506 INFO L459 AbstractCegarLoop]: Abstraction has 409 states and 417 transitions. [2018-04-11 22:24:51,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-11 22:24:51,507 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 417 transitions. [2018-04-11 22:24:51,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2187 [2018-04-11 22:24:51,545 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:24:51,546 INFO L355 BasicCegarLoop]: trace histogram [231, 224, 224, 224, 224, 224, 224, 224, 224, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:24:51,546 INFO L408 AbstractCegarLoop]: === Iteration 25 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:24:51,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1746794854, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:24:51,556 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:24:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:24:52,158 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:24:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 228375 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 228130 trivial. 0 not checked. [2018-04-11 22:24:53,692 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:24:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 228375 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 228130 trivial. 0 not checked. [2018-04-11 22:24:55,463 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:24:55,464 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2018-04-11 22:24:55,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-11 22:24:55,466 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-11 22:24:55,466 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2018-04-11 22:24:55,466 INFO L87 Difference]: Start difference. First operand 409 states and 417 transitions. Second operand 32 states. [2018-04-11 22:24:56,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:24:56,171 INFO L93 Difference]: Finished difference Result 527 states and 551 transitions. [2018-04-11 22:24:56,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-11 22:24:56,171 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 2186 [2018-04-11 22:24:56,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:24:56,177 INFO L225 Difference]: With dead ends: 527 [2018-04-11 22:24:56,177 INFO L226 Difference]: Without dead ends: 507 [2018-04-11 22:24:56,178 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4399 GetRequests, 4341 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1155, Invalid=2385, Unknown=0, NotChecked=0, Total=3540 [2018-04-11 22:24:56,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2018-04-11 22:24:56,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 497. [2018-04-11 22:24:56,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2018-04-11 22:24:56,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 513 transitions. [2018-04-11 22:24:56,206 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 513 transitions. Word has length 2186 [2018-04-11 22:24:56,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:24:56,208 INFO L459 AbstractCegarLoop]: Abstraction has 497 states and 513 transitions. [2018-04-11 22:24:56,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-11 22:24:56,208 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 513 transitions. [2018-04-11 22:24:56,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4659 [2018-04-11 22:24:56,358 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:24:56,360 INFO L355 BasicCegarLoop]: trace histogram [495, 480, 480, 480, 480, 480, 480, 480, 480, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:24:56,360 INFO L408 AbstractCegarLoop]: === Iteration 26 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:24:56,361 INFO L82 PathProgramCache]: Analyzing trace with hash -214547686, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:24:56,371 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:24:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:24:57,299 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:25:03,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1051275 backedges. 0 proven. 1185 refuted. 0 times theorem prover too weak. 1050090 trivial. 0 not checked. [2018-04-11 22:25:03,427 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:25:09,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1051275 backedges. 0 proven. 1185 refuted. 0 times theorem prover too weak. 1050090 trivial. 0 not checked. [2018-04-11 22:25:09,615 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:25:09,617 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2018-04-11 22:25:09,619 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-11 22:25:09,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-11 22:25:09,620 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1056, Invalid=2976, Unknown=0, NotChecked=0, Total=4032 [2018-04-11 22:25:09,620 INFO L87 Difference]: Start difference. First operand 497 states and 513 transitions. Second operand 64 states. [2018-04-11 22:25:10,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:25:10,940 INFO L93 Difference]: Finished difference Result 703 states and 751 transitions. [2018-04-11 22:25:10,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-11 22:25:10,940 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 4658 [2018-04-11 22:25:10,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:25:10,948 INFO L225 Difference]: With dead ends: 703 [2018-04-11 22:25:10,949 INFO L226 Difference]: Without dead ends: 683 [2018-04-11 22:25:10,951 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 9375 GetRequests, 9253 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3257 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4867, Invalid=10385, Unknown=0, NotChecked=0, Total=15252 [2018-04-11 22:25:10,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-04-11 22:25:10,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 673. [2018-04-11 22:25:10,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2018-04-11 22:25:10,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 705 transitions. [2018-04-11 22:25:10,980 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 705 transitions. Word has length 4658 [2018-04-11 22:25:10,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:25:10,983 INFO L459 AbstractCegarLoop]: Abstraction has 673 states and 705 transitions. [2018-04-11 22:25:10,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-11 22:25:10,984 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 705 transitions. [2018-04-11 22:25:11,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9603 [2018-04-11 22:25:11,394 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:25:11,397 INFO L355 BasicCegarLoop]: trace histogram [1023, 992, 992, 992, 992, 992, 992, 992, 992, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:25:11,397 INFO L408 AbstractCegarLoop]: === Iteration 27 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:25:11,398 INFO L82 PathProgramCache]: Analyzing trace with hash -321700838, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:25:11,404 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:25:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:25:13,125 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:25:37,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4495155 backedges. 0 proven. 5177 refuted. 0 times theorem prover too weak. 4489978 trivial. 0 not checked. [2018-04-11 22:25:37,246 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:26:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4495155 backedges. 0 proven. 5177 refuted. 0 times theorem prover too weak. 4489978 trivial. 0 not checked. [2018-04-11 22:26:01,259 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:26:01,261 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-04-11 22:26:01,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-04-11 22:26:01,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-04-11 22:26:01,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3072, Unknown=0, NotChecked=0, Total=4160 [2018-04-11 22:26:01,266 INFO L87 Difference]: Start difference. First operand 673 states and 705 transitions. Second operand 65 states. [2018-04-11 22:26:03,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:26:03,098 INFO L93 Difference]: Finished difference Result 714 states and 748 transitions. [2018-04-11 22:26:03,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-04-11 22:26:03,098 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 9602 [2018-04-11 22:26:03,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:26:03,107 INFO L225 Difference]: With dead ends: 714 [2018-04-11 22:26:03,107 INFO L226 Difference]: Without dead ends: 694 [2018-04-11 22:26:03,109 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 19265 GetRequests, 19077 SyntacticMatches, 63 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5673 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5118, Invalid=10884, Unknown=0, NotChecked=0, Total=16002 [2018-04-11 22:26:03,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2018-04-11 22:26:03,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 684. [2018-04-11 22:26:03,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2018-04-11 22:26:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 717 transitions. [2018-04-11 22:26:03,134 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 717 transitions. Word has length 9602 [2018-04-11 22:26:03,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:26:03,138 INFO L459 AbstractCegarLoop]: Abstraction has 684 states and 717 transitions. [2018-04-11 22:26:03,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-04-11 22:26:03,138 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 717 transitions. [2018-04-11 22:26:03,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9912 [2018-04-11 22:26:03,547 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:26:03,550 INFO L355 BasicCegarLoop]: trace histogram [1056, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:26:03,550 INFO L408 AbstractCegarLoop]: === Iteration 28 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:26:03,551 INFO L82 PathProgramCache]: Analyzing trace with hash 255025007, now seen corresponding path program 6 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:26:03,558 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:26:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:26:05,359 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:26:06,817 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 [2018-04-11 22:26:06,817 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:06,819 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:06,820 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:26:06,972 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:06,974 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 [2018-04-11 22:26:06,974 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:06,979 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:06,980 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:07,088 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:07,089 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 [2018-04-11 22:26:07,122 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:07,128 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:07,128 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:07,244 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:07,246 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 [2018-04-11 22:26:07,246 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:07,251 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:07,252 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:07,388 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:07,390 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 [2018-04-11 22:26:07,390 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:07,418 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:07,419 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:07,570 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:07,575 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 [2018-04-11 22:26:07,576 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:07,581 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:07,582 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:07,762 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:07,763 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 [2018-04-11 22:26:07,764 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:07,768 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:07,768 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:07,886 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:07,887 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 [2018-04-11 22:26:07,888 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:07,892 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:07,893 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:08,012 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:08,013 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 [2018-04-11 22:26:08,014 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:08,018 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:08,019 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:08,138 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:08,139 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 [2018-04-11 22:26:08,139 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:08,144 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:08,144 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:08,265 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:08,266 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 [2018-04-11 22:26:08,266 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:08,270 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:08,270 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:08,392 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:08,393 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 [2018-04-11 22:26:08,394 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:08,398 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:08,398 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:08,524 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:08,526 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 [2018-04-11 22:26:08,526 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:08,530 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:08,531 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:08,658 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:08,660 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 [2018-04-11 22:26:08,660 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:08,664 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:08,665 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:08,795 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:08,797 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 [2018-04-11 22:26:08,797 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:08,801 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:08,802 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:08,934 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:08,936 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 [2018-04-11 22:26:08,936 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:08,941 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:08,941 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:09,076 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:09,078 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 [2018-04-11 22:26:09,078 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:09,082 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:09,082 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:09,218 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:09,219 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 [2018-04-11 22:26:09,219 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:09,223 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:09,224 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:09,367 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:09,368 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 [2018-04-11 22:26:09,369 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:09,373 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:09,373 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:09,516 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:09,518 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 [2018-04-11 22:26:09,518 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:09,522 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:09,522 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:09,663 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:09,664 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 [2018-04-11 22:26:09,664 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:09,668 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:09,668 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:09,811 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:09,812 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 [2018-04-11 22:26:09,812 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:09,817 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:09,817 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:09,962 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:09,963 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 [2018-04-11 22:26:09,963 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:09,967 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:09,967 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:10,114 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:10,115 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 [2018-04-11 22:26:10,115 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:10,120 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:10,120 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:10,277 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:10,278 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 [2018-04-11 22:26:10,279 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:10,283 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:10,283 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:10,441 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:10,442 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 [2018-04-11 22:26:10,442 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:10,446 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:10,446 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:10,599 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:10,600 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 [2018-04-11 22:26:10,600 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:10,604 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:10,604 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:10,759 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:10,760 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 [2018-04-11 22:26:10,761 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:10,765 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:10,765 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:10,922 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:10,923 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 [2018-04-11 22:26:10,924 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:10,928 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:10,928 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:11,088 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:11,089 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 [2018-04-11 22:26:11,089 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:11,094 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:11,094 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:11,255 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:11,256 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 [2018-04-11 22:26:11,256 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:11,261 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:11,261 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:26:11,429 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:26:11,430 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 [2018-04-11 22:26:11,431 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:11,436 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:26:11,436 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:5 [2018-04-11 22:26:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4790000 backedges. 5055 proven. 294812 refuted. 0 times theorem prover too weak. 4490133 trivial. 0 not checked. [2018-04-11 22:26:39,473 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:26:45,202 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2018-04-11 22:26:45,203 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:45,239 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2018-04-11 22:26:45,239 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 22:26:45,244 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 22:26:45,244 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:14, output treesize:7 [2018-04-11 22:26:45,544 WARN L148 SmtUtils]: Spent 295ms on a formula simplification that was a NOOP. DAG size: 167 [2018-04-11 22:27:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4790000 backedges. 0 proven. 294992 refuted. 0 times theorem prover too weak. 4495008 trivial. 0 not checked. [2018-04-11 22:27:14,971 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:27:14,973 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 76] total 137 [2018-04-11 22:27:14,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-04-11 22:27:14,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-04-11 22:27:14,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1332, Invalid=17300, Unknown=0, NotChecked=0, Total=18632 [2018-04-11 22:27:14,979 INFO L87 Difference]: Start difference. First operand 684 states and 717 transitions. Second operand 137 states. [2018-04-11 22:27:26,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:27:26,652 INFO L93 Difference]: Finished difference Result 694 states and 726 transitions. [2018-04-11 22:27:26,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-04-11 22:27:26,652 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 9911 [2018-04-11 22:27:26,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:27:26,660 INFO L225 Difference]: With dead ends: 694 [2018-04-11 22:27:26,661 INFO L226 Difference]: Without dead ends: 689 [2018-04-11 22:27:26,666 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 19950 GetRequests, 19592 SyntacticMatches, 94 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17218 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=5702, Invalid=64788, Unknown=0, NotChecked=0, Total=70490 [2018-04-11 22:27:26,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2018-04-11 22:27:26,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 685. [2018-04-11 22:27:26,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2018-04-11 22:27:26,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 718 transitions. [2018-04-11 22:27:26,702 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 718 transitions. Word has length 9911 [2018-04-11 22:27:26,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:27:26,708 INFO L459 AbstractCegarLoop]: Abstraction has 685 states and 718 transitions. [2018-04-11 22:27:26,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-04-11 22:27:26,708 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 718 transitions. [2018-04-11 22:27:27,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9914 [2018-04-11 22:27:27,140 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:27:27,143 INFO L355 BasicCegarLoop]: trace histogram [1056, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:27:27,143 INFO L408 AbstractCegarLoop]: === Iteration 29 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-11 22:27:27,145 INFO L82 PathProgramCache]: Analyzing trace with hash 556335701, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:27:27,150 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:27:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:27:28,924 INFO L270 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown